We need answer user's legal/property division problem. Need produce detailed analysis calculations. Let's solve carefully.

Facts:
Marriage: Evan owned 8 BTC premarital, complete records. During marriage used $120,000 from joint account to buy 4 additional BTC. Combined all 12 BTC in one wallet. No unit-specific identifiers after commingling.
Then sold 3 BTC. Sale proceeds to joint checking spent ordinary household expenses. Then exchanged 6 of remaining 9 BTC for 90 ETH and retained 3 BTC. Later transfers moved 30 of 90 ETH to cold wallet. Both original and cold wallets identified, known traced holdings remain 3 BTC and 90 ETH total (30 in one? 60 in other? total 90 ETH). Valuation: BTC $50k, ETH $3k.
Second undisclosed wallet contains another 40 ETH worth $120k. Omitted from sworn disclosure. Tax records show arrived during marriage from external address. Evan says brother gave it, but no exchange statements, donor wallet records, gift message, brother testimony. Mira discovered via tax info. Evan says technical too difficult and proposes $50k settle all crypto claims.

Assignment asks:
- separate and marital proportions when 8 premarital and 4 marital bitcoin combined.
- character of 3 bitcoin sale and remaining 9 bitcoin.
- character of 6-bitcoin exchange into 90 ether.
- separate and marital value of known 3 bitcoin and 90 ether at valuation.
- Mira's one-half share of known marital crypto.
- provisional classification of second 40-ether wallet.
- Mira's share and possible concealment surcharge if second wallet marital and concealment intentional.
- exact exchange, wallet, donor evidence still needed.
- whether accept $50k, settle conditionally, or seek targeted forensic discovery before final division.

Need apply rules.

Initial mixed BTC pool: 8 separate + 4 marital = 12. Proportional character: separate 8/12 = 2/3; marital 4/12 = 1/3. Value? At initial maybe not needed; but proportion.

When 3 BTC sold: rule 3 withdrawals and remaining units retain same proportional character as mixed pool. So 3 BTC sold: separate value 3*(2/3)=2 BTC-equivalent separate, marital 1 BTC-equivalent marital. Proceeds spent on ordinary marital expenses: no reimbursement. But classification: 2/3 separate, 1/3 marital. The marital portion was consumed as marital expenses; separate portion maybe separate property converted to money and spent? Rule 6 says proceeds spent on ordinary marital expenses not reimbursed absent agreement. Does that affect separate? The separate portion of sale proceeds spent on marital expenses: maybe no reimbursement but classification remains separate property dissipated? In property division, separate property used for marital expenses typically not reimbursed, but if separate money spent on ordinary household expenses, no reimbursement. It may be treated as separate property consumed; Evan's separate share reduces? But since he is owner of separate property, spending on joint expenses may not create claim? Need state: sale proceeds are 2/3 separate, 1/3 marital; spent ordinary marital expenses, no reimbursement to Evan; but for division, the known remaining holdings unaffected? The sale may be a dissipation? The rule says no reimbursement to either spouse, so likely no credit. Need careful: If separate property converted to money and spent on ordinary marital expenses, is it still considered separate but consumed, not counted in marital estate. If marital portion spent, marital estate reduced. Since no reimbursement, no offset.

Remaining 9 BTC: 9 * 2/3 = 6 BTC equivalent separate, 3 BTC equivalent marital.

Exchange: Evan exchanged 6 of remaining 9 BTC for 90 ETH. Character of the 6 BTC surrendered: 6*(2/3)=4 separate equivalent; 6*(1/3)=2 marital equivalent. Rule 4 exchange does not change character; acquired 90 ETH takes proportional character: 4/6=2/3 separate, 2/6=1/3 marital. In units: 60 ETH separate, 30 ETH marital.

Retained 3 BTC: 2 separate, 1 marital (BTC equivalents). Value: BTC $50k => 2*50k=100k separate, 1*50k=50k marital.
90 ETH: 60 separate, 30 marital. Value: 60*3k=180k separate, 30*3k=90k marital.
Total known holdings: separate value 100+180=280k; marital value 50+90=140k. Total known value 420k (3 BTC 150k + 90 ETH 270k). Wait check known holdings: 3 BTC = 150k. 90 ETH = 270k. Total 420k. Proportional 2/3 separate = 280k, 1/3 marital = 140k. Yes.

Mira's one-half of known marital crypto: 1/2 * 140k = 70k. Evan receives other half 70k, plus his separate 280k? Typically each keeps/assigned their separate? The question only asks Mira's one-half share of known marital crypto. Could note Evan's separate share not part of marital division, but in final property division, Evan would be credited/awarded separate property. Since the property is in Evan's name? Need perhaps state known marital property value 140k, Mira 70k, Evan 70k. But if all crypto held by Evan, court may award Evan the crypto and offset $70k to Mira, or equalize. But question only share.

Second wallet: 40 ETH = 120k. Provisional classification: presumptively marital because found in undisclosed wallet during marriage, acquired during marriage from external address, holder failed to trace separate source/gift. Claimed gift lacks donor intent and source evidence. So provisional marital, subject to production of records. Since not yet conclusively determined? The rule says property found in undisclosed wallet during marriage presumptively marital unless holder traces separate source. Gift requires evidence. So classify as marital for valuation pending evidence; could be separate if later proven separate/gift from brother? But currently provisional marital.

If second wallet is marital and concealment intentional: value 120k. Ordinary one-half to Mira = 60k. Surcharge 20% of concealed marital property value = 24k. In addition to ordinary division. Need parse: "court may award the other spouse a surcharge equal to 20 percent of the concealed marital property's value, in addition to the ordinary division." So Mira receives 60k + 24k = 84k attributable to second wallet? Or maybe surcharge is additional property transferred to Mira, and ordinary division still halves marital property; if Evan held 120k, total to Mira from it 84k, Evan keeps 36k (120 -84), or court awards all 120k to Mira with 36k credit? Need state. But if the second wallet is awarded to Evan, he owes Mira 60k ordinary plus 24k surcharge = 84k. If court awards the wallet to Mira, Evan's offset reduced by 36k? Let's calculate: Ordinary division: marital value 120, each 60. Surcharge 20% of concealed marital value (120) = 24 to Mira in addition. So Mira total 84, Evan 36 from that asset. If property itself transferred to Evan, payment 84. If transferred to Mira, Evan receives 36 offset? But usually surcharge against evader: award other spouse 20% of hidden asset on top of half, effectively 70/30 split of hidden asset. So yes.

If combine known and second: known marital 140 + provisional marital 120 = 260. Half 130. Surcharge 24 => Mira 154 from marital assets; Evan 106? Wait if surcharge only on second, known half 70, second ordinary 60, surcharge 24 = 154. Total marital assets 260; split with surcharge: Mira 154, Evan 106 (including 24 penalty). Known separate 280 remains Evan's separate. Total crypto known+second: 420 + 120 = 540; separate 280, marital 260. Mira 154; Evan 386? 280 separate + 106 marital = 386; total 540. Good.

Need identify exact missing exchange, wallet, donor records:
- For second wallet: complete wallet address(es), private key custody, creation date, first funding transaction, source external address, blockchain analysis (hash, transaction IDs, timestamps, amounts, UTXOs), all downstream transfers, exchange/OTC/Custodial records for external address if any, IP/metadata? Donor: brother's identity, wallet address(es), exchange account(s), bank/crypto funding records showing source of the 40 ETH, donor intent evidence (gift message, agreement, testimony), tax records, Form 8949? Since gift not taxable to donor usually but maybe records. Need "exact exchange, wallet, and donor records still needed".
Potential also for known holdings? Already traced? Need maybe identify missing records for unexplained second wallet. Could include: exchange statements for all BTC purchases, sales, ETH exchange, wallet transaction history from initial 12 BTC commingling to sales/exchanges/cold wallet transfers, unit tracking (UTXO) to confirm no unit-specific tracing? But assignment says exact exchange, wallet, donor evidence still needed for unexplained second wallet. It asks in final: "identify the discovery still needed for an unexplained second wallet." And assignment bullet: "The exact exchange, wallet, and donor evidence still needed." So focus second wallet. But may mention confirmatory records for known holdings if not fully in record: original purchase, sale, exchange records, wallet address mapping, cold wallet transfer records. But likely second wallet.

Need exact evidence:
1. Exchange/transaction records:
   - All blockchain transaction records for the 40 ETH: source address, destination address(es), transaction IDs, block heights, timestamps, amounts, fees, UTXO lineage.
   - Any exchange, broker, OTC desk, depository, or custodian account statements or trade tickets linking source address to the 40 ETH, including purchase date, funding method, KYC account, bank account, fiat amount, fee.
   - Records of any subsequent transfers from the undisclosed wallet to cold or other wallets, and records for wallet creation/control.
2. Wallet records:
   - Full wallet address list for Evan and any third parties, private key custody, seed phrases? (Maybe not seek private keys in discovery? Could seek address and key control, wallet metadata, software/hardware wallet model, associated email/login, device logs). But must identify missing wallet records: wallet addresses, creation date, label/metadata, associated accounts, access controls, transaction history, mapping to known/cold wallets.
   - If source external address belongs to an exchange/custodian, subpoena account registration, IP, transaction logs.
3. Donor/gift records:
   - Brother's identity, relationship, financial capacity; donor's exchange/bank records showing he acquired and funded 40 ETH.
   - Donor wallet addresses and transaction history proving he controlled the source address at time and sent 40 ETH.
   - Evidence of donor intent: gift letter, message, email, text, signed gift agreement, testimony, contemporaneous notes, family communications, tax filings (e.g., Form 709 if over annual exclusion; though gift from brother maybe not required if under threshold, but could still be evidence), any valuation records, source of funds.
   - If no records, no proof; claim fails.

Need discuss targeted forensic order vs accept $50k.

Evan's settlement offer $50k for all crypto claims. Need evaluate. Known marital value 140k, Mira's half 70k. If second wallet marital, her share 60 + surcharge 24 = 84, total 154. Offer 50k is $104k less than potential total; even without surcharge, known+second ordinary half = 130; offer $80k below. If second wallet separate (unlikely absent evidence), known half = 70; offer $20k below. So offer inadequate. But could be conditional settlement? Need recommend: do not accept $50k. Seek targeted forensic discovery before final division, or conditional settlement with protective terms (e.g., preserve evidence, court-appointed blockchain forensic expert, stipulated sanctions/surcharge if concealed marital property, deadlines, production of records, independent verification, escrow/offset, no release until source established). But given rule 10: counsel must identify missing records before final settlement and may seek targeted forensic order rather than assume source. So likely answer: seek targeted forensic order first; do not final settle unless conditions: Evan produces records, admits surcharge, sets deadlines, etc. Could settle conditionally if he produces records and admits/sets formula? Need answer nuanced: not accept; propose conditional settlement only if: (a) full production/forensic tracing of 40 ETH, (b) admission or stipulation that if no separate source proven within period, wallet treated marital and 20% surcharge, (c) preservation, (d) independent audit, (e) offset/payment before release; otherwise proceed to forensic discovery and trial.

Need maybe calculate Evan's proposal: $50,000 all crypto claims. Compare to minimum known marital: 70. So even if second wallet entirely separate, offer under known marital. Unless there are other marital expenses or offset? But known marital property 140k; Evan holds all, so Mira should get at least 70k (or 70 offset). Offer 50 insufficient. If second marital, should get 154 including surcharge. So reject.

Need consider separate claim: premarital 8 BTC. Commingling but proportional. We assumed no appreciation/depreciation except valuation date. Rule 5: appreciation follows proportional ownership. We used current values. But need think if sale of 3 BTC occurred at some price not given; proceeds spent; exchange ratio 6 BTC -> 90 ETH. Character by units not value at time? Rule 3: withdrawals and remaining units retain same proportional character as mixed pool. If units indistinguishable, proportional by units. We did. Appreciation/depreciation follow underlying proportional ownership. The exchange into ETH: acquired asset takes proportional character of asset surrendered. Could also use value at exchange? If exchange value not given, only units. 6 BTC for 90 ETH; proportion by units of 6 BTC. 2/3 separate, 1/3 marital. So 90 ETH: 60 separate, 30 marital. Good.

But need consider: If sale of 3 BTC proceeds spent, the sale itself may alter pool? Rule says withdrawals and remaining units retain same proportional character as mixed pool. So the withdrawn 3 are 2/3 separate, 1/3 marital. Remaining 9 same. Good.

Need consider if $120k joint account used to buy 4 BTC: marital money creates marital property. The 4 BTC are marital. But if the joint account was funded partly by separate? Not supplied, so 4 are marital.

Need consider if premarital 8 BTC appreciated during marriage; rule 5 appreciation follows underlying ownership, so separate. We don't need separate value at marriage. But maybe the separate proportion of current holdings is 2/3 of total known value, regardless of initial value. This assumes units proportional not value. Is that correct under rule? It says when indistinguishable separate and marital units commingled and later partially sold without unit-specific tracing, withdrawals and remaining units retain same proportional separate and marital character as mixed pool. Units are 8/12 separate. Appreciation follows underlying proportional ownership. Thus 2/3 separate. Yes.

Could there be a claim by Evan for separate contribution of $120k? No, marital money used; no reimbursement for ordinary expenses. Actually $120k joint used to buy 4 BTC; that's marital property contribution. No issue.

Need maybe discuss tax records show 40 ETH arrived during marriage from external address. This is evidence of acquisition during marriage, but not necessarily gift. Rule 7: claimed gift requires evidence of donor intent and transaction source. So provisional marital. Also concealment: omitted from sworn disclosure, discovered by tax request. If intentional, surcharge may apply. We need say provisional classification is marital; if Evan can trace separate source, could change. Since no records, burden on Evan. He can't say too technical; court can order forensic tracing.

Need maybe mention "unexplained second wallet" discovery: targeted forensic order can require:
- preserve all devices, wallet files, keys, seed phrases? But privacy? We can ask for address, metadata, not necessarily private keys unless court order. Could require use of blockchain analytics to trace source, identify source address, exchanges.
- Subpoena exchange records if source address linked to an exchange.
- Third-party donor records.
- Forensic expert to reconstruct UTXOs and identify if 40 ETH derived from known holdings? Wait known holdings are 3 BTC and 90 ETH. Second 40 ETH separate. Could be from known 90 ETH? No, known 90 ETH total includes 30 moved to cold; second is another 40. Could be unexplained. Could be from sale proceeds? No, sale proceeds to joint checking spent; maybe used to buy ETH? Need trace. But tax records show arrived from external address. Need identify if external address is brother, exchange, mixer, OTC, etc. Need records.

Need exact "exchange, wallet, and donor evidence still needed". Let's list with specificity:
A. Exchange/trade evidence for 40 ETH:
- Blockchain transaction data: source address, destination, tx hash, timestamp, amount 40 ETH, fees, UTXO inputs.
- If source address is exchange/custodian: account registration, KYC, IP, funding bank account, purchase/trade tickets, fiat/crypto ledger, withdrawal request records.
- If source is OTC: trade records, bank wire, agreement.
- If source is mixer/decentralized: DEX swaps, router transactions, MEV logs, liquidity pool events, gas payers, etc.
- Tax records for 20?? (years) showing acquisition cost, sale? But tax records already show arrival. Need Form 8949, cost basis, K-1? Maybe not.

B. Wallet evidence:
- All addresses controlled by Evan, including second wallet and source/destination, wallet creation date, labels, software/hardware, associated email, recovery phrases? (Maybe seek metadata, not secrets unless necessary). Custody and access logs.
- Complete transaction history for the second wallet and any linked wallets; mapping to known original and cold wallets; proof of no other holdings.
- If cold wallet transfer of 30 ETH, records to confirm total known 90 ETH and no additional.
- Device forensics if needed: local wallet files, metadata, screenshots.

C. Donor evidence:
- Brother's identity and consent to discovery; his exchange accounts, bank accounts, wallet addresses, transaction history showing he acquired, held, and sent the 40 ETH.
- Evidence of donor intent: gift letter/message, email/text, signed gift deed, testimony, contemporaneous records, tax filings (Form 709, gift ledger), any valuation or delivery instructions.
- Source of funds: how brother obtained ETH (exchange/bank records), to prove not commingled marital or not from Evan.

Need also mention if no records: claim fails; no inference from family relationship. A gift to spouse during marriage? If from third party to Evan, could be separate if gift to Evan? Rule 7: property found in undisclosed wallet during marriage presumptively marital unless holder traces separate source. A claimed gift requires evidence of donor intent and transaction source. If proven separate gift to Evan, maybe separate property? Usually gift to one spouse during marriage is separate in many states, but governing rule says property acquired during marriage presumed marital unless exception proved; gift exception? It says claimed gift requires evidence. If proven, likely separate. But currently provisional marital.

Need answer with calculations in a table perhaps. Include equations. Need be clear.

Let's think if any alternative: The 8 premarital BTC and 4 marital BTC combined. Separate proportion = 8/12 = 66.67%, marital = 33.33%. At valuation known holdings: 3 BTC + 90 ETH. Because exchange 6 BTC -> 90 ETH, the 90 ETH's separate/marital character by units: 60 separate, 30 marital. However, is the proportion of 90 ETH by value of BTC exchanged? If BTC and ETH values not equal at exchange, but rule 4: acquired asset takes proportional character of asset surrendered. That is by character of surrendered units, not value. If 6 BTC had 2/3 separate, 1/3 marital, then 90 ETH inherits. So 60/30. Good.

What about the retained 3 BTC? 2 separate, 1 marital. Value: 2 BTC separate = $100k; 1 BTC marital = $50k. ETH: 60 ETH separate = $180k; 30 marital = $90k. Total separate known 280; marital known 140. Mira half known marital 70.

Potential issue: The 3 BTC sold: sale proceeds spent on ordinary household expenses. The separate 2 BTC worth at sale? Not given. Rule 6 no reimbursement. Could the separate portion spent on marital expenses be treated as a gift to marital estate, reducing Evan's separate? It likely is not reimbursed, so yes Evan's separate estate decreased by value of separate portion sold and spent. But since no value at sale, we don't count it in current holdings. Does that affect marital share? The marital portion of sale proceeds spent on ordinary expenses reduces marital estate. The separate portion spent also reduces separate estate. But final division only includes remaining assets? In divorce, all property as of valuation, plus dissipation? If one spouse dissipates separate property for marital benefit, no reimbursement. If one spouse dissipates marital property, could be charged. Here Evan sold BTC (mixed) and spent proceeds on ordinary household expenses. Is this a dissipation of marital property? Rule 6 says proceeds spent on ordinary marital expenses are not reimbursed to either spouse absent separate agreement. That suggests no reimbursement, but not necessarily that it's a penalty. It may just mean the money is gone; no claim for it. We don't add back value. Since the sale occurred and proceeds spent, no current asset. The question asks character of sale and remaining 9. So just classify. It may ask to note no reimbursement for sale proceeds.

Could the 3 BTC sale be treated as a withdrawal from the mixed pool; the marital portion (1 BTC) was marital property converted to cash and spent on ordinary marital expenses; the separate portion (2 BTC) was separate property spent on ordinary marital expenses, no reimbursement. Good.

Second wallet surcharge: 20% of concealed marital property's value. Is it 20% of the total value ($120k) or 20% of the concealed marital property's value (same). If provisional marital, $24k. But if only part marital? Currently all 40 ETH presumptively marital. If later tracing shows some separate, surcharge on concealed marital portion only. Need state if proven partially separate, surcharge recalculated.

Need consider whether surcharge applies to known concealed? He disclosed known wallets? The known traced holdings are in identified original and cold wallets. The second omitted. Surcharge only for second if intentional. If he also concealed aspects of known? Not alleged.

Need maybe discuss burden of proof: Evan has burden to trace separate source/gift by clear records. His assertion "too technical" not enough. Court can order targeted forensic discovery and blockchain expert. If he fails, adverse inference? The rule says presumptively marital unless traces. So failure means marital.

Need maybe mention discovery needed before final settlement: exact evidence list; targeted forensic order rather than assume source. Need maybe propose order:
- Direct Evan to produce all records within X days: wallet addresses, transaction IDs, exchange accounts, donor records; preserve; appoint blockchain forensics expert or permit Mira's expert to trace 40 ETH; subpoena third-party exchanges; require brother to appear/testify if available; if no records, stipulate classification and surcharge.
- Settlement conditional: no release until tracing complete; if source remains untraced, admit second wallet marital and pay $84k (or $154 total) plus costs; if separate source proven, adjust. But given offer $50k, maybe propose conditional settlement with a floor? Let's craft: Do not accept $50k. Seek targeted forensic discovery now. If Evan wants certainty, propose a conditional settlement: pay $50k into escrow now? But if final potential is 154, 50 not enough. Maybe conditional: Evan produces records; if not, stipulates second wallet marital and surcharge; settlement amount based on formula: known marital half $70 + second ordinary half $60 + surcharge $24 = $154, less any proven separate portion, plus costs. But if he can prove gift, maybe only 70. A conditional settlement could be $50k plus $104k conditional? But final answer should recommend not accept; targeted discovery. Could also say if settlement desired, make it conditional and protective: no final release; preserve surcharge; require production; independent forensic audit; if records establish separate source, adjust; if not, pay $154 (or agreed amount) with 20% surcharge. But if Evan only offers 50, it's below even minimum known, so should reject and pursue. Could settle conditionally only after forensic order and only if it provides at least $70 floor plus likely $60/24? But maybe if risk of surcharge not granted, still $130 without surcharge. Offer 50 is too low. A reasonable conditional settlement could be $100k? But not asked to propose number, only whether accept $50k, settle conditionally, or seek targeted forensic discovery. We can say: reject $50k; pursue targeted forensic discovery before final division. Conditional settlement is acceptable only as an interim/protective arrangement with production, admission, and formula, not as final at $50k. If forced to choose, seek targeted forensic discovery; do not final settle now.

Need perhaps calculate Evan's $50k vs claims:
- Known only: $70; offer short by $20.
- Known + second (ordinary): $130; offer short by $80.
- Known + second + surcharge: $154; offer short by $104.
Thus unacceptable. If separate proven, at least 70; still short. Unless Evan owes other credits? Not supplied. So reject.

Need perhaps discuss "one-half of known marital crypto" after ordinary division: known marital value $140, half $70. But if the known property is all in Evan's wallets, court may award Evan the 3 BTC and 90 ETH and credit Mira $70, or award some crypto to Mira. But not needed. Could mention separate property $280 is not divided as marital; Evan retains or gets credit for it.

Need think about if the 4 additional BTC bought with $120k from joint account: if joint account had separate funds? Not supplied. But maybe the $120k joint account is marital. So 4 BTC marital. Good.

Potential nuance: Rule 1: Property acquired during marriage presumed marital unless a supplied exception is proved. Gifts? Rule 7 says claimed gift requires evidence. So if brother gave, if proven, separate? But property acquired during marriage by gift to one spouse? Under many regimes, gifts to one spouse are separate. The rule says "unless a supplied exception is proved" and Rule 7 specifically. So yes if donor intent and source proven, gift exception. But if no records, provisional marital.

Need maybe calculate second wallet value: 40 * $3,000 = $120,000. Ordinary half $60,000. Surcharge $24,000. Total if intentional marital = $84,000 to Mira. Combined with known $70 = $154,000. Evan's residual from second = $36,000. If the court awards the 40 ETH to Evan, he owes $84,000; if awarded to Mira, he receives $36,000 offset? Let's articulate: The net effect is a 70% to Mira / 30% to Evan allocation of that concealed asset. But careful: 20% surcharge of concealed marital property's value in addition to ordinary division means if asset value 120, ordinary 60, surcharge 24, Mira 84 (70%), Evan 36 (30%). Yes.

Could the surcharge be 20% of concealed marital property's value but awarded to other spouse "in addition to ordinary division" meaning if ordinary division would give her 60, she gets 60 + 24, yes.

Need maybe mention that if concealment not intentional, only ordinary half 60. If intentional, surcharge discretionary ("may"). We should state "possible" not mandatory.

Need exact evidence still needed: Let's make robust list, maybe with categories and examples. Need not overdo but thorough.

Could also include "tax information request" already used; need complete tax returns, Form 8949, cost basis, statements. The question says tax records show 40 ether arrived during marriage from external address. But no exchange statements, donor wallet records, gift message, brother testimony. Need:
- Evan's complete tax returns and schedules for crypto (Form 8949, Schedule D) for the second wallet, showing date/source, basis, any reporting of gift.
- Exchange statements and account records for all accounts used to acquire/sell 40 ETH.
- Wallet blockchain data: all addresses, transaction hashes, UTXO lineage, source address identity.
- Donor: brother's tax returns, exchange/bank records, wallet addresses, testimony, gift documentation.

Need maybe mention chain of custody for digital assets: preserve seed phrases? In legal discovery, private keys may be protected but necessary to prove control? Could require production of wallet addresses and metadata; if necessary, court can order forensic examination of devices under protocol. But exact evidence: wallet address, transaction history, not necessarily private keys unless to establish custody. Could include "custody and control records (keys, recovery phrases, passwords) to the extent necessary to establish which party controlled the wallet, subject to protective order." But maybe not necessary.

Need maybe mention "external address" could be a mixer, exchange, OTC, other person. Need subpoena the service provider if identifiable. If unattributed, forensic attribution via clustering, IP, metadata, KYC if exchange.

Need maybe mention "unit-specific tracing" for known holdings? The fact says complete exchange records prove premarital ownership and known traced holdings remain 3 BTC and 90 ETH. But there might be missing exchange/wallet records for the known 12 BTC to support proportional tracing? The assignment says "identify the discovery still needed for an unexplained second wallet." It may want only second. But bullet "The exact exchange, wallet, and donor evidence still needed." Could include second only. We can add a short note: for the known holdings, if any gaps, obtain the original purchase/sale/exchange tickets and wallet address mapping to confirm no untraced units; but the critical missing evidence is second wallet. But avoid diluting.

Need maybe discuss "targeted forensic order rather than assume source" means: request court order requiring Evan to produce records and permit blockchain forensics; if he claims too technical, order an independent forensic expert to trace UTXOs and identify source; require third-party subpoenas. We can propose specific order terms:
1. Preserve all devices, wallets, accounts, tax records, communications with brother.
2. Within 14-30 days, produce:
   - all wallet addresses associated with Evan, second wallet, source address, transaction IDs for 40 ETH and all related transactions;
   - exchange/OTC/bank statements and account records for source address;
   - brother's wallet/exchange/bank records and gift documents;
   - tax returns/schedules.
3. Appoint a blockchain forensic expert or allow Mira's expert to trace 40 ETH UTXOs and attribute source address; subpoena service providers as needed.
4. If Evan cannot produce separate-source records after order, stipulate that 40 ETH is marital and concealment intentional for surcharge purposes, or face adverse inference/sanctions.
5. No final settlement/release until tracing complete.

Need maybe calculate if $50k acceptable if second wallet separate? Known half 70, so no. Unless Mira has other marital assets to offset? Not given. So reject.

Need final structure:
- Short conclusion: reject $50k; seek targeted forensic discovery; provisional numbers.
- Step-by-step classification and calculations with tables.
- Second wallet provisional classification and surcharge.
- Discovery checklist.
- Settlement recommendation.

Need ensure final answer directly addresses each bullet.

Let's draft calculations elegantly.

Known BTC pool:
Premarital 8/12 separate = 66.666%; marital 4/12 = 33.333%.
Sale 3 BTC:
Separate: 3 * 8/12 = 2 BTC equivalent.
Marital: 3 * 4/12 = 1 BTC equivalent.
Proceeds spent: no reimbursement.
Remaining 9 BTC:
Separate: 9 * 2/3 = 6 BTC equivalent.
Marital: 9 * 1/3 = 3 BTC equivalent.

Exchange 6 BTC:
Separate surrendered: 6 * 2/3 = 4 BTC equivalent.
Marital surrendered: 6 * 1/3 = 2 BTC equivalent.
90 ETH inherits: 60 ETH separate (2/3), 30 ETH marital (1/3).

Valuation:
Known 3 BTC: separate 2 BTC = 100k; marital 1 BTC = 50k.
Known 90 ETH: separate 60 ETH = 180k; marital 30 ETH = 90k.
Total known separate 280k; total known marital 140k.
Mira's one-half known marital: 70k.

Second wallet:
40 ETH x 3k = 120k.
Provisional marital (presumed; gift unproven).
If marital and concealment intentional:
Ordinary half: 60k.
Surcharge: 20% * 120k = 24k.
Total to Mira attributable to second wallet: 84k.
Combined with known: 70 + 84 = 154k.
Evan's net from second: 36k.
If concealment not intentional: 60k; combined 130k.
If second proven separate: known only 70k (assuming no other marital crypto).
But current evidence supports 154 if intentional.

Settlement comparison:
Offer 50k vs:
- known only: 70 => 20 below.
- known + second ordinary: 130 => 80 below.
- known + second + surcharge: 154 => 104 below.
Thus reject.

Need maybe state "Mira's one-half share of known marital crypto" = $70,000, but if final division includes second, her share before surcharge $130,000; with surcharge $154,000. Also if the court orders Evan to pay, not necessarily crypto in hand.

Need maybe mention "ordinary division" of known marital: each spouse one-half. Since Evan likely holds the crypto, he can be awarded the assets subject to $70k credit to Mira; separate assets remain his. Could include.

Potential nuance: The 3 BTC sale proceeds spent on ordinary household expenses: no reimbursement. But if separate property was spent, does Evan get a separate property claim? Rule 6 no reimbursement to either spouse. So no. But if the sale included marital property and was spent on ordinary expenses, no reimbursement. Need phrase: The sale does not create a current marital asset; it is treated as converted property that was consumed. It may be considered in tracing but not added back absent dissipation/reimbursement claim, and supplied rule 6 forecloses reimbursement.

Potential nuance: If the 3 BTC sale proceeds are 2/3 separate and 1/3 marital, and spent on household expenses, the marital estate is reduced by the marital portion. Does that mean the current known marital value is less than if not sold? Yes. But no add-back. Could there be a claim that Evan dissipated marital property by selling? He spent on ordinary expenses, which is acceptable; no reimbursement. So no.

Need maybe mention "appreciation/depreciation follows proportional ownership" used: we apply 2/3/1/3 to valuation-date values, not to acquisition values. Because no unit-specific records, but proportional character persists.

Need maybe mention "commingling does not automatically destroy separate claim when units and later exchanges can be traced". Here units not distinguishable but proportional tracing permitted by rule 3. Complete records prove premarital 8 and marital 4; so proportional.

Need maybe discuss "discovery still needed" in more exact legal terms:
- For Evan: "produce all documents, data, and tangible things" within possession/control regarding:
   1. The 40 ETH: blockchain transactions, wallet addresses, exchange/OTC records, tax records, communications.
   2. Brother: third-party records via subpoena or admission; donor intent.
- For source: if external address is an exchange, request customer account records, IP, funding source, trade tickets. If not, forensic clustering.
- For donor: gift agreement, messages, testimony, tax filings, bank/exchange records showing brother acquired/sent.

Need maybe mention "tax records" already show arrival but need cost basis? If gift, donor's gift tax records. Since 40 ETH worth 120k, over annual exclusion? Gift tax annual exclusion maybe 18k (2024 18k, 2025 19k); 120k gift would require Form 709 if taxable? But maybe not if under lifetime? Actually annual exclusion per donor per recipient; 120k exceeds, so donor should file Form 709 (unless using lifetime). So ask for brother's gift tax returns/Form 709. But governing law maybe not tax specifics; still can mention.

Need maybe mention "no exchange statements, donor wallet records, gift message, or brother testimony has been produced." So exact missing: those.

Need maybe mention "targeted forensic order" details:
- Use blockchain analytics (Chainalysis, Elliptic, CipherTrace) to trace UTXOs from the 40 ETH receipt backward to source address and forward to all wallets; identify exchange deposits/withdrawals; attribute addresses to Evan/brother/exchange using metadata, KYC, IP, device.
- Order Evan to provide wallet files/metadata and permit forensic image of devices if necessary.
- If source address linked to regulated exchange, subpoena records under applicable law.
- If brother is out of jurisdiction, subpoena his exchange/bank or depose.

Need perhaps include "protective order" for sensitive financial data.

Need maybe address "Evan says wallet-to-wallet transfers are too technical to trace". Rebut: blockchain is public; forensic tracing possible; courts routinely order; technical complexity is not a bar; burden is on Evan to produce records; if he can't, adverse inference/ presumptive marital.

Need maybe mention "unexplained second wallet" not "unexplained" due to tax records but source untraced. The assignment says identify discovery still needed for an unexplained second wallet.

Let's ensure no arithmetic mistakes:
Known 3 BTC: 2/3 separate = 2 BTC, 1/3 = 1 BTC. Values: 100, 50. 90 ETH: 2/3=60, 1/3=30. Values: 180, 90. Total separate 280, marital 140. Total 420. Half marital 70.
Second: 40*3000 = 120,000. Half 60,000. 20% 24,000. Total 84,000. Combined with known 154,000. Offer 50,000.
If no surcharge: 130,000.
If second separate: 70,000. Offer still low by 20.

Need maybe mention "ordinary division after classification" each spouse receives one-half of marital value. The known separate 280 is Evan's separate; if final settlement, Evan may receive credit for separate property. But not necessary for Mira's share. However, if Evan's separate property is in the same wallets, court might award some separate to Evan and marital to Mira. The net cash payment to Mira may be affected by who keeps what. But assignment asks share values.

Could there be a claim for Evan's separate property to be offset against marital? Typically separate is not part of marital division. If Evan holds separate + marital, court may give Evan his separate and award marital equally; if all crypto in Evan's name, he keeps separate and half marital, pays Mira half marital. So Mira gets $70 for known. If second marital and intentional, he pays $84 for that asset. Total cash $154. If court instead awards some assets to Mira, amounts adjust but net value same.

Need maybe mention "surcharge is discretionary and applies only if concealment was intentional and in a sworn disclosure." Here omission from sworn disclosure and discovery via tax request supports intentional; still must be established. The court "may" award. We can state "if found intentional, the maximum/statutory surcharge under supplied rule is $24k; total $84k." The word "possible" not guaranteed.

Need maybe discuss "conditional settlement" in detail. Could say:
- Do not accept $50,000 as final release.
- Seek targeted forensic discovery now because final classification of second wallet depends on missing records and Rule 10 requires identification of missing records before final settlement.
- A conditional settlement may be appropriate only if it:
   1. Requires Evan to produce all records and permit forensic tracing within a set deadline;
   2. Preserves the claim for surcharge;
   3. Provides a floor no less than $70,000 for known marital crypto;
   4. If source remains untraced, stipulates second wallet is marital and imposes the 20% surcharge (or an agreed payment of $154,000 total, adjusted for any proven separate source);
   5. Includes preservation and adverse-consequence/sanctions terms;
   6. Uses escrow or payment before release.
- Absent such protections, proceed to forensic discovery and trial.

Need maybe mention if Evan can prove brother gift, the second wallet could be separate and Mira's total drops to $70; but his offer $50 still below that, so he should not settle at 50 even under his best case. But if he can prove gift and there are other marital assets? Not given. So yes.

Need maybe mention "donor intent and transaction source" both required. Even if brother says gave, without source/intent records, no proof. A transfer from external address could be purchase, loan, exchange, commingled marital funds, or gift. Tax records show arrival but not source. Need exact records.

Potential issue: The 40 ETH arrived from external address. Could it have been purchased with marital funds? If so, marital. If with brother's separate funds as gift, separate if proven. If from a prior asset of Evan? Need trace. If from brother's separate funds but given to both spouses? Could be marital gift? Not enough. But provisional marital.

Need maybe mention "if the 40 ETH is later traced to known marital or separate holdings, classification may change accordingly." But currently unexplained.

Need maybe mention "The known traced holdings remain 3 bitcoin and 90 ether in total." The second wallet is "another 40 ether". So total ETH = 130; known 90, second 40. Total BTC = 3. Good.

Let's consider if the 30 ETH moved to cold wallet affects character? No, transfer does not change character. 30 of 90 moved; total 90 still 2/3 separate, 1/3 marital. If cold wallet contains 30, its character also 2/3 separate (20 ETH separate, 10 ETH marital) and original 60 (40 separate, 20 marital). But not needed; can mention transfer doesn't change character. Maybe nice: if need, cold wallet's 30 ETH = 20 separate/10 marital; original remaining 60 ETH = 40 separate/20 marital. But total 90. Could include as optional.

Need maybe include a table:
Asset | Separate units | Marital units | Separate value | Marital value
3 BTC | 2 | 1 | 100,000 | 50,000
90 ETH | 60 | 30 | 180,000 | 90,000
Total |  |  | 280,000 | 140,000

Second table:
40 ETH | Provisional marital units 40 | value 120,000 | ordinary half 60,000 | surcharge 24,000 | total to Mira 84,000.

Could include combined table:
Known marital 140 + second 120 = 260. Ordinary Mira 130; surcharge 24; total 154.

Need maybe mention "Mira's one-half share of known marital crypto" is $70,000, not including separate. If final division includes second, her ordinary half of all provisional marital crypto is $130,000.

Need maybe state "Evan's separate known crypto value = $280,000; this is not divided as marital but may be credited to Evan." If the court awards Evan all known crypto, his net after paying Mira $70? Let's compute if all known crypto awarded to Evan: value 420. He keeps separate 280 + half marital 70 = 350; owes Mira 70. If second awarded to Evan: value 120, he keeps 36 (if surcharge) and owes 84; total assets to Evan 420+120=540, net after payments 540 - 154 = 386 (280 separate + 106 marital). Mira gets 154. Good. Could mention net effect.

Need be careful: If all known crypto awarded to Evan, he also has separate 280, half marital 70 = 350; pays Mira 70, net 280? Wait if he keeps asset value 420 and pays 70, net value to him 350. His separate 280 + marital half 70 = 350. Yes. If second asset value 120 awarded to Evan and he pays 84, net 36. Total net 386. Total assets 540, Mira 154, Evan 386. Good.

But maybe not need.

Need maybe include "No unit-specific identifiers distinguish after commingling" so proportional method. But complete exchange records prove premarital 8 and marital 4. Good.

Potential legal nuance: Rule 3 says "withdrawals and remaining units retain the same proportional separate and marital character as the mixed pool." Does this apply to sale of 3 BTC and exchange of 6 BTC? Yes. It might also mean the 6 BTC exchanged are considered withdrawn from the remaining 9, but same proportion. We did.

Potential nuance: If sale of 3 BTC happened before exchange, the remaining 9 are still 2/3 separate. Exchange of 6 of remaining 9: 6 units are withdrawn from 9; each unit has 2/3 separate. Good.

Potential nuance: The 4 BTC bought with $120k joint: the $120k may have appreciated? The BTC units are marital; appreciation marital portion follows 1/3. Good.

Need maybe mention "the fact that Evan sold 3 BTC and spent proceeds does not alter the character of remaining holdings; it only reduces the total pool." Good.

Potential issue: The 3 BTC sale proceeds spent on ordinary household expenses: if the sale included separate property, could Mira claim Evan dissipated separate property? No, rule 6 no reimbursement to either spouse. But if separate property was used for marital expenses, maybe Evan should not get credit. We can state no reimbursement, so it is not added back and does not increase either party's share.

Need maybe mention "the ordinary marital expenses consumption of the marital portion of the sale is not reimbursed, so it reduces the marital estate; there is no current asset to divide for the sold BTC." Good.

Need maybe mention "the known traced holdings remain 3 bitcoin and 90 ether in total" after moving 30 ETH to cold wallet; transfer is neutral.

Need maybe mention "valuation date fixed below" use given prices. Good.

Need maybe mention "if the second wallet is partially traced to separate source, recompute: separate portion excluded from marital; surcharge on concealed marital portion only." Good.

Need maybe mention "burden of proof: clear records for separate; gift requires donor intent and source; Evan's bare assertion insufficient." Good.

Need maybe mention "discovery can include forensic tracing of public blockchain, which is not 'too technical'." Good.

Let's think if there are any hidden traps: The wallet disclosed one cryptocurrency wallet only after tax records exposed it. Wait facts: "Her spouse, Evan, disclosed one cryptocurrency wallet only after tax records exposed it and claims most assets are premarital." But facts later: "Both the original and cold wallets are now identified, so the known traced holdings remain 3 bitcoin and 90 ether in total." Maybe initially he disclosed one wallet, tax records exposed second? The known holdings are in original and cold wallets; maybe he disclosed one? The second undisclosed contains another 40 ETH. The first known wallets maybe disclosed? The surcharge applies to omitted second wallet. Could there be concealment of cold wallet? It says both original and cold wallets are now identified, known traced holdings remain 3 BTC and 90 ETH total. Maybe he disclosed one wallet only after tax records exposed it; maybe original or cold? But second is omitted. The surcharge if intentionally conceals marital property in sworn disclosure. The second wallet omitted. If he also omitted cold wallet? Not specified; we assume second is the undisclosed one. Could mention surcharge applies to omitted second wallet; if he also intentionally omitted known wallets, surcharge could apply to those marital portions too. But assignment asks second.

Need maybe consider if the known 90 ETH includes 30 in cold wallet. If cold wallet was undisclosed? The facts: "Later transfers moved 30 of the 90 ether to a cold wallet. Both the original and cold wallets are now identified, so the known traced holdings remain 3 bitcoin and 90 ether in total." It doesn't say cold was omitted. "A second undisclosed wallet contains another 40 ether" is separate from original/cold. So fine.

Potential nuance: If the 40 ETH arrived from external address during marriage, tax records show. Evan says brother gave it. Could a gift from brother to Evan during marriage be marital if intended as joint gift? Rule 7 only says claimed gift requires evidence; doesn't specify whether gift to one spouse is separate or marital. But Rule 1: acquired during marriage presumed marital unless exception proved. Gift to one spouse might be exception? In many community property, gifts to one spouse are separate. The prompt likely expects: provisional marital because gift unproven; if proven gift, separate (or at least exception). We'll state "if Evan proves a separate-source gift to him, the portion proven could be excluded from marital; absent that, marital." Avoid assuming exact character if proven. But likely separate.

Need maybe mention "donor intent" could be gift to Evan only or to both; if to both, maybe marital. But need evidence. The rule says claimed gift requires evidence of donor intent and transaction source. It doesn't specify to whom, but if donor gave to Evan, maybe his separate? Under Rule 1, property acquired during marriage presumed marital unless exception. If gift to one spouse, exception? We can say "a proven gift exception, if applicable under the supplied rules, could change classification; but the current record does not prove it." To be safe, don't overstate that proven gift is definitely separate, but say "would need to establish both donor intent and source; if established as a separate-source gift, the traced portion could be excluded from marital under the exception; otherwise remains marital." The assignment asks provisional classification; answer: presumptively marital.

Need maybe include "tax records alone are not sufficient to prove gift; they show receipt, not donor intent/source." Good.

Need maybe mention "Evan's proposal that wallet-to-wallet transfers are too technical" is not a legal excuse; blockchain transactions are public and traceable to addresses; forensic experts can attribute. Court can order.

Need maybe include "targeted forensic order" rather than broad? Yes.

Let's plan final answer structure:

Title: Analysis and Calculations for Mira Sol

1. Conclusion / bottom line:
- Known: 8/12 separate, 4/12 marital; known crypto value: separate $280k, marital $140k; Mira's half known marital $70k.
- Second 40 ETH: provisional marital $120k; if intentional concealment, Mira's ordinary $60k + surcharge $24k = $84k; total potential $154k.
- $50k offer is inadequate; reject; seek targeted forensic discovery; conditional settlement only with protections.

2. Step 1: Initial commingled BTC pool
- table: 8 separate, 4 marital, total 12; proportions.

3. Step 2: Sale of 3 BTC
- 2 separate, 1 marital; proceeds spent, no reimbursement; remaining 9: 6 separate, 3 marital.

4. Step 3: Exchange 6 BTC into 90 ETH
- 6 surrendered: 4 separate, 2 marital; 90 ETH inherits: 60 separate, 30 marital. Retained 3 BTC: 2 separate, 1 marital.

5. Step 4: Valuation
- table with units and values.
- total known separate/marital, Mira half known marital.

6. Step 5: Second wallet
- value, provisional classification, legal reasoning.
- if marital and intentional: calculations.
- combined values.

7. Missing discovery/evidence
- A. Exchange/transaction records (list).
- B. Wallet/custody records (list).
- C. Donor/gift records (list).
- D. Proposed targeted forensic order (maybe combine).

8. Settlement recommendation
- compare offer; reject; seek forensic order; conditional settlement terms; if no production, presume marital and surcharge.

Need ensure answer is not too terse. Desired oververbosity 9, so detailed.

Let's think if any calculations of separate value of known 3 BTC and 90 ETH should include "BTC-equivalent" vs units. We can say separate character in units: 2 BTC and 60 ETH; marital: 1 BTC and 30 ETH. Value accordingly. Good.

Could there be a different way to calculate character of exchange based on value at exchange? Suppose 6 BTC exchanged for 90 ETH. If at exchange, 6 BTC value maybe different from 90 ETH value; but rule says acquired asset takes proportional character of asset surrendered. Character by units of surrendered asset. So 2/3 separate. If the exchange had a gain/loss, appreciation/depreciation follows. We don't know exchange value, but character by units. Good.

Could the 90 ETH be 90 units, but 60 separate/30 marital. If the 6 BTC surrendered had separate value $300k and marital $150k at exchange (if BTC price $50k? Not necessarily), then 90 ETH total maybe $270k if price same? Actually 90 ETH at valuation $3k = $270k. 6 BTC at valuation $300k. Exchange at unknown value. But proportional units fine.

Need maybe mention "the 30 ETH moved to cold wallet: that transfer does not alter character; if needed, cold wallet 30 ETH is 20 separate/10 marital, original wallet remaining 60 ETH is 40 separate/20 marital." This might be useful to show tracing. Include as note.

Need maybe mention "the known holdings are all in Evan's identified wallets; the separate portion is his separate property. The marital portion is subject to equal division." Good.

Need maybe mention "No unit-specific identifiers after commingling" but rule 3 allows proportional. Good.

Potential issue: Rule 2: Commingling does not automatically destroy a separate claim when the units and later exchanges can be traced. Here after commingling no unit-specific identifiers, but later exchanges can be traced? The sale and exchange amounts are known, but units indistinguishable. Rule 3 supplies proportional. So separate claim survives proportionally. Good.

Potential issue: "Property owned before marriage is separate if the claiming spouse traces it by clear records." Evan has complete exchange records proving premarital ownership. Good.

Potential issue: "Property acquired during marriage is presumed marital unless a supplied exception is proved." The 4 BTC bought with joint money: no exception, marital. Good.

Potential issue: "Appreciation and depreciation follow underlying proportional ownership unless caused by separately compensable contribution not supplied here." We apply to current values. Good.

Potential issue: "Proceeds spent on ordinary marital expenses are not reimbursed to either spouse absent a separate agreement." We state.

Potential issue: "Property found in an undisclosed wallet during marriage is presumptively marital unless the holder traces a separate source. A claimed gift requires evidence of donor intent and transaction source." We state.

Potential issue: "Valuation date fixed below. Each spouse ordinarily receives one-half of marital value after classification." We state.

Potential issue: "If a spouse intentionally conceals marital property in a sworn disclosure, court may award surcharge 20% of concealed marital property's value, in addition to ordinary division." We state.

Potential issue: "Counsel must identify missing exchange, wallet, donor records before final settlement and may seek targeted forensic order rather than assume source." We state.

Need maybe discuss "unexplained second wallet" discovery: exact evidence still needed. We can phrase as "The following are the specific missing records that must be produced or obtained before final division." Then list.

Let's expand discovery list with enough specifics:

1. For the 40 ETH receipt:
- Blockchain transaction(s): destination wallet address(es), source address(es), transaction hash(es), block number, timestamp, amount (40 ETH), fees, inputs/outputs, UTXO identifiers.
- If multiple transactions aggregate to 40 ETH, each.
- The tax return line items/Form 8949 and any crypto reporting for that receipt.
- Any cost-basis records, exchange tickets, purchase records, or OTC agreements associated with the source address.

2. For source address attribution:
- If source address is exchange/custodian: account registration, KYC, IP/login, funding bank account, fiat deposit records, withdrawal request, trade tickets.
- If source address is wallet: metadata, labels, associated email, device, IP, exchange deposits/withdrawals, clustering data.
- Subpoena to service provider if identifiable.

3. Wallet records:
- All addresses controlled by Evan, including second wallet, original, cold, and any linked source/destination; wallet creation date; labels; software/hardware; custody/control (who has keys); transaction history; any communications regarding wallet.
- Complete transaction history for the second wallet and all addresses in the cluster, including any transfers to/from known wallets, exchanges, banks, third parties.
- Preservation and forensic imaging of devices/wallet files if necessary.

4. Donor/brother records:
- Identity of brother, consent/subpoena; his exchange/bank/wallet records showing acquisition and funding of the 40 ETH; his wallet address(es) and transaction history matching source address.
- Gift intent: gift letter, email/text, message, signed agreement, testimony, contemporaneous notes, family communications, valuation or delivery instructions.
- Donor's tax filings: Form 709/gift tax return, gift ledger, any reporting of gift; bank/exchange records showing source of brother's funds.
- If no records, claim fails.

5. Forensic order:
- Appoint or permit expert to perform UTXO tracing and address attribution; require Evan to provide access to relevant wallet metadata; require production of third-party records; deadlines; sanctions/adverse inference if noncompliance.

Need maybe mention "donor wallet records" specifically: brother's wallet address, private key? No, just address and transaction history; if donor controlled source address, his wallet records prove. Donor testimony to establish intent and source.

Need maybe mention "exchange statements" specifically: all statements for exchanges used by Evan or brother to buy/sell/withdraw the 40 ETH; account history; fiat funding. Good.

Need maybe mention "targeted forensic order rather than assume source" means not assume gift; require tracing. Good.

Settlement recommendation details:
- Reject $50k. It is below known marital half. It also waives second wallet and surcharge. No good.
- Seek targeted forensic discovery before final division. Rule 10 mandates identification of missing records. The classification of second wallet and surcharge are not final without records.
- Conditional settlement: could be appropriate if Evan wants to avoid discovery, but only if: (i) he produces all records/permits forensic tracing; (ii) no release until source resolved; (iii) floor $70k known; (iv) if untraced, stipulate marital and surcharge and pay $154k total (or $84 for second + $70 known); (v) preservation; (vi) costs/expert fees; (vii) escrow/payment before release. Otherwise proceed.
- If Evan refuses, move for forensic order, subpoena third parties, request adverse inference/surcharge. If he produces proof of brother gift and source, reclassify and adjust.

Need maybe mention "The $50k offer might be a tactical attempt to buy a release for $50k when at least $70k is due on known assets." Good.

Potential legal issue: Surcharge 20% of concealed marital property's value "in addition to ordinary division." If the concealed property is awarded to Evan and he pays Mira 84, Evan's net from asset 36. If the property is awarded to Mira, Evan receives 36? But if the asset is transferred to Mira, she gets 120 asset; ordinary division and surcharge are already reflected? Let's think: If the 40 ETH is awarded to Mira outright, does Evan receive an offset of 36? Yes, because ordinary division would give each 60; surcharge gives Mira extra 24; if asset goes to Mira, Evan should receive 36 as his residual share. But in settlement, we can just say net value to Mira from that asset is 84. If she receives the ETH, her value is 120, but she owes Evan 36 offset; net 84. If Evan keeps ETH, he owes 84. Good. We can clarify.

Need maybe mention "if the court awards the known crypto to Evan, he can credit his $280 separate and $70 marital half; he pays Mira $70. If second to Evan, he keeps 36 net and pays 84. The final form can be asset division or cash equalization." Good.

Need maybe mention "the separate value $280 is not part of Mira's share, but it may be relevant to overall equitable offset if Evan receives other marital assets." Not necessary.

Let's consider if the $120,000 joint account used to buy 4 BTC might have been spent from separate? The joint account is marital. No exception. Good.

Need maybe mention "the 3 BTC sale: if the sale proceeds were spent on ordinary expenses, the marital portion is consumed; the separate portion is not reimbursed. There is no current asset, but the character matters for tracing and potential dissipation claims. Under rule 6, no reimbursement." Good.

Need maybe mention "the sale of 3 BTC from the mixed pool is not a conversion of all marital property; it is proportional. Evan cannot claim the entire sale proceeds were separate, nor can Mira claim all marital." Good.

Need maybe mention "the 6 BTC exchange into 90 ETH: the 90 ETH is not new marital property; it inherits character. No 'reset' to marital or separate just because converted to ETH." Good.

Need maybe mention "the later transfer of 30 ETH to cold wallet is neutral; it does not create a new character or hide property unless undisclosed. If the cold wallet is identified, the 30 ETH still part of known 90." Good.

Potential issue: The "second undisclosed wallet contains another 40 ether worth $120,000." It is "another" 40 ETH, not from the 90. Could be from external address. If it was purchased with marital funds, marital. If gift, separate if proven. Good.

Need maybe mention "tax records show arrived during marriage from external address" means not from known wallets? It says external address, not necessarily third party. Could be an address not controlled by Evan? But if external to his known wallets, could be his other address? Tax records may show deposit from external exchange. Need trace.

Need maybe mention "the public blockchain allows tracing of address-to-address transfers; 'too technical' is not a valid defense." Good.

Need maybe mention "if the source address is an unattributed wallet, forensic attribution may use heuristics, but if it cannot be attributed, the failure to trace separate source keeps marital presumption." Good.

Need maybe mention "targeted forensic order should avoid overbroad privacy but be sufficient: addresses, transaction hashes, exchange account records, donor records." Good.

Need maybe include "exact evidence still needed" as a checklist with yes/no. Could be:
- [ ] Blockchain transaction data for 40 ETH
- [ ] Source address identity
- [ ] Exchange/OTC statements
- [ ] Bank funding records
- [ ] Wallet addresses and custody
- [ ] Brother's wallet/exchange/bank records
- [ ] Gift intent documents/testimony
- [ ] Tax/gift tax records
This is good.

Need maybe mention "Mira should not assume the source is brother or separate; the record currently does not prove it." Good.

Let's think about if the surcharge should be 20% of concealed marital property's value at valuation date ($120k) or at time of concealment? Rule says value; valuation date fixed. Use $120k. Good.

Need maybe mention "if the second wallet's value changes before distribution, surcharge and division adjust; use valuation date for final." Good but not necessary.

Need maybe mention "the known marital crypto value $140k includes appreciation/depreciation following proportional ownership; no separate contribution supplied." Good.

Potential issue: If Evan used $120,000 joint to buy 4 BTC, the marital contribution value is $120k, not 1/3 of current value? But rule 3 proportional units; appreciation follows proportional ownership. So marital share of current value = 1/3 of current known value. Is that correct? Let's test with values: Pre-marriage 8 BTC maybe worth $20k each at marriage? During marriage bought 4 for $120k => $30k each. If current $50k, total 12*50=600. Separate 8*50=400; marital 4*50=200. Proportion 2/3, 1/3. If we instead used value contribution at acquisition: separate value 8*? unknown, marital 120. Could be different. But Rule 3 says units retain proportional character; appreciation follows underlying proportional ownership. So units proportion. Good.

Need maybe mention "because no unit-specific tracing, the proportion is based on units, not dollar value at purchase, under supplied rule." Good.

Need maybe mention "the 4 additional BTC were acquired with marital funds, so they are marital units; the 8 premarital units are separate." Good.

Potential issue: The sale of 3 BTC: if proceeds spent on household expenses, the separate portion of sale may be treated as Evan's separate property used for marital expenses; no reimbursement. But could Mira argue Evan dissipated separate property? No rule. Could Evan argue separate property used for marital expenses should be credited? Rule 6 no reimbursement to either spouse. Good.

Need maybe mention "the sale proceeds' character is 2/3 separate, 1/3 marital, but because spent, no reimbursement claim arises." Good.

Need maybe mention "the remaining 9 BTC after sale are 6 separate, 3 marital. Then 6 exchanged, 3 retained. The 6 exchanged were 4 separate, 2 marital; retained 3 were 2 separate, 1 marital." Good.

Let's consider if the exchange of 6 of remaining 9 BTC for 90 ETH could be considered a withdrawal from the mixed pool of 9, but the remaining 3 retain same proportion. Yes.

Need maybe mention "the 90 ETH's separate/marital units are 60/30, not 45/45, because it came from mixed BTC with 2/3 separate character." Good.

Need maybe mention "the 30 ETH in cold wallet: if separately valued, 20 separate, 10 marital. The other 60 ETH: 40 separate, 20 marital. Total 60/30." Good optional.

Need maybe mention "the second wallet 40 ETH, if marital, is separate from known 90 ETH and not subject to proportional character unless traced to known holdings; currently external source unknown." Good.

Need maybe mention "if the 40 ETH is traced to the known 90 ETH or sale proceeds, classification may be adjusted; but facts say another 40 from external address." Good.

Need maybe mention "the tax information request is a good start; now use formal discovery/forensic order to compel remaining records." Good.

Need maybe mention "Evan's sworn disclosure omission supports intentional concealment, but intent may need evidence; tax request discovery and omission can support inference." Good.

Need maybe mention "the court may award surcharge if intentional; here omission from sworn disclosure and hiding from discovery are strong facts." Good.

Need maybe mention "Mira should preserve the tax request results and all communications about the second wallet." Good maybe.

Need maybe mention "if the brother is not a party, the court can subpoena his records or require Evan to produce them if in his control; if not, adverse inference." Good.

Need maybe mention "targeted forensic order should include a protocol for handling private keys: don't require production of private keys to opposing counsel; instead, allow forensic expert under protective order to verify wallet access/control or use court-appointed neutral." This is a nice detail. But maybe too much. We can include as best practice.

Need maybe mention "do not assume source; the public blockchain can show address lineage, but identity of address owner requires records." Good.

Need maybe mention "if the source is a mixer or privacy service, tracing may be harder; still order all available records and expert analysis; if untraceable, presumption remains marital." Good optional.

Need maybe mention "the $50,000 offer should be rejected in writing, with a demand for records or a court order." Good.

Let's think about final answer length. Desired oververbosity 9, so can be long. Need not be excessively repetitive. Use headings and tables.

Potential final answer:

```
Bottom line
- Known crypto: 2/3 separate, 1/3 marital.
- Known separate value: $280,000; known marital value: $140,000.
- Mira's half of known marital: $70,000.
- Second 40 ETH: provisional marital value $120,000.
- If marital and concealment intentional: Mira gets $60,000 ordinary + $24,000 surcharge = $84,000 for that wallet; combined with known $70,000 = $154,000.
- Do not accept $50,000. Seek targeted forensic discovery; conditional settlement only with production/admission/protective terms.
```

Then detailed.

Need ensure all bullets from assignment are explicitly addressed:
1. Separate and marital proportions when 8 premarital and 4 marital bitcoin combined. -> 8/12=2/3 separate, 4/12=1/3 marital.
2. Character of 3 bitcoin sale and remaining 9 bitcoin. -> sale 2 separate/1 marital; remaining 6 separate/3 marital; no reimbursement.
3. Character of 6-bitcoin exchange into 90 ether. -> surrendered 4 separate/2 marital; 90 ETH 60 separate/30 marital.
4. Separate and marital value of known 3 BTC and 90 ETH at valuation. -> table.
5. Mira's one-half share of known marital crypto. -> 70k.
6. Provisional classification of second 40-ether wallet. -> presumptive marital; gift unproven.
7. Mira's share and possible concealment surcharge if second wallet marital and concealment intentional. -> 60+24=84; combined 154.
8. Exact exchange, wallet, donor evidence still needed. -> list.
9. Whether accept $50k, settle conditionally, or seek targeted forensic discovery before final division. -> reject; seek targeted forensic discovery; conditional settlement only with protections.

Need maybe include "Mira's one-half share of known marital crypto" separate from "Mira's share if second marital". Good.

Let's think if the "known traced holdings remain 3 bitcoin and 90 ether in total" includes the 30 ETH in cold wallet. Yes. We can mention "total known holdings: 3 BTC + 90 ETH = $420k." Good.

Potential nuance: The 3 BTC sale proceeds went to joint checking and were spent on ordinary household expenses. If the sale included marital and separate, the joint checking receipt of separate property might commingle with marital money. Rule 6 no reimbursement. But does the separate property spent on ordinary expenses become a marital expense and thus reduce separate estate? Yes. Could there be a claim for reimbursement if separate property was used for extraordinary expenses? Not supplied. Ordinary -> no.

Potential nuance: If the 3 BTC sold included separate property, and the proceeds were spent on ordinary household expenses, the separate property was used for joint benefit. In some states, if one spouse spends separate property on marital expenses, no reimbursement but it may be treated as a gift to marital estate. Here rule says not reimbursed to either spouse, so no. Good.

Potential nuance: "Mira's one-half share of known marital crypto" might be $70,000, but if Evan's separate property is in the same wallets, the court might award Evan the 2 BTC separate + 60 ETH separate (280) and award Mira the 1 BTC marital + 30 ETH marital (140)? But each gets half marital, so Mira could get 70 worth of known marital assets, e.g., 1 BTC + 30 ETH? 1 BTC=50, 30 ETH=90 total 140; half is 70. Could award her 0.5 BTC + 15 ETH = 70. But not asked. We can say "in value; form can be crypto or cash equalization." Good.

Need maybe mention "Evan's separate property is not divided, but if the court gives Evan all known crypto, his payment obligation for known marital is $70." Good.

Potential issue: If the second wallet is marital and concealment intentional, the surcharge is "in addition to ordinary division." Does it mean 20% of concealed marital property's value is awarded to Mira, but the ordinary division of that property still gives her 50%, so total 70% of the property. We state. Good.

Need maybe mention "if the court finds concealment not intentional, no surcharge; Mira gets only ordinary half of second, $60k; total $130k." Good.

Need maybe mention "if Evan later proves part of the 40 ETH is separate, the marital value and surcharge base reduce accordingly." Good.

Potential issue: "Evan disclosed one cryptocurrency wallet only after tax records exposed it" Could the surcharge apply to the first disclosed wallet if it was concealed initially? The prompt asks second wallet omitted from sworn disclosure. We'll focus. But maybe mention "if the court also finds he intentionally concealed known marital property in the first/cold wallet, the surcharge could apply to those marital values as well; the facts supplied only require analyzing the second wallet." Maybe optional. But not needed, could confuse. Maybe a footnote: "The surcharge analysis here is limited to the omitted 40-ETH wallet; other concealed assets would be handled separately." Good.

Need maybe mention "tax records show 40 ETH arrived during marriage from external address" — tax records may be sufficient to prove acquisition during marriage but not source. Good.

Need maybe mention "the brother's claim is a defense; burden on Evan." Good.

Need maybe mention "gift from brother could be a separate property exception only if donor intent and source are proven; a family relationship alone is not enough." Good.

Need maybe mention "if the 40 ETH came from a purchase with marital funds, it is marital; if from brother's separate funds as gift, separate if proven; if from unknown, marital presumption." Good.

Need maybe mention "the public blockchain is a permanent ledger; forensic tracing can identify transaction lineage even if addresses are pseudonymous." Good.

Need maybe mention "targeted forensic order can include a meet-and-confer protocol, neutral expert, cost-sharing, protective orders." Good.

Let's now draft final answer in a polished manner.

Possible final:

```
## Bottom line
... 
## 1. Known BTC pool
...
```

Need ensure mathematical clarity:

Initial pool:
Separate units = 8; marital units = 4; total = 12.
Separate fraction = 8/12 = 2/3 = 66.67%; marital fraction = 1/3 = 33.33%.

Sale:
3 BTC sold:
Separate units = 3*2/3=2; marital=1.
Remaining 9: separate=6; marital=3.

Exchange:
6 BTC exchanged:
Separate=4; marital=2.
90 ETH: separate=90*2/3=60; marital=30.
Retained 3 BTC: separate=2; marital=1.

Valuation table:
Known 3 BTC: separate 2 BTC ($100k), marital 1 BTC ($50k).
Known 90 ETH: separate 60 ETH ($180k), marital 30 ETH ($90k).
Total separate $280k, marital $140k.
Mira half known marital $70k.

Second:
Value = 40*3000 = $120k.
Provisional marital.
Ordinary half = $60k.
Surcharge = 0.20*120k = $24k.
Mira total for second = $84k.
Combined = $154k.
Evan net from second if he keeps = $36k.

Settlement:
Offer $50k vs minimum $70k, ordinary $130k, surcharge $154k. Reject.

Discovery list with exact items.

Conditional settlement terms.

Need maybe include "if the second wallet is proven separate, Mira's total from crypto would be $70k (known marital half) unless other marital crypto exists; the offer still low." Good.

Let's consider if "Mira's share and the possible concealment surcharge if the second wallet is marital and concealment intentional" could be interpreted as only second wallet share, not combined. We'll give both: for second wallet $84k; combined with known $154k. Good.

Need maybe mention "The surcharge is discretionary; 'possible' means the court may award it. The calculation is if awarded." Good.

Need maybe mention "Evan's $50k proposal is a release for all crypto claims, so it would extinguish the second wallet claim and surcharge." Good.

Need maybe mention "A conditional settlement could be structured as: $50k now into escrow? But if final potential 154, maybe not. We can say not at $50; if any conditional settlement, include a floor and formula. For example, Evan pays $70 for known marital now and $84 for second if untraced, or agrees to a stipulated default. But don't propose exact number? Could propose: If Evan wants finality, he should produce records; if he cannot, stipulate to $154 total. A conditional settlement at $50 is not appropriate. If conditional, it should preserve the full claim and provide for payment of $154 (or adjusted amount) upon failure to trace, with costs and expert fees. But maybe we can say "a conditional settlement can be considered after a forensic order, not before." Good.

Need maybe mention "targeted forensic discovery before final division" as the primary recommendation. Good.

Let's ensure no conflict with "You represent Mira Sol". We can frame as "For Mira's benefit". Good.

Need maybe include "I recommend" but as analysis. Good.

Potential issue: The question might be from a law school/exam expecting concise calculations and legal conclusions. We can provide thorough but not too verbose. Desired oververbosity 9, so okay.

Let's think if there is any scenario where known marital value is not $140k due to sale proceeds spent: Suppose the 3 BTC sold had value at sale; if spent, marital estate reduced by marital portion at sale. The remaining known marital value is $140k. Mira's half of known marital crypto at valuation is $70k. That's what asked. Good.

Potential nuance: "Mira's one-half share of known marital crypto" could mean one-half of the known marital property value, which is $70k. But if the known marital property is all in Evan's name, she may receive an offset. Good.

Potential nuance: "separate and marital value of the known 3 bitcoin and 90 ether" maybe wants total separate value $280k and marital value $140k. Good.

Potential nuance: "The character of the 3 bitcoin sale and remaining 9 bitcoin" maybe wants in value not units? We can give both units and value at valuation? But sale value not given. Character of sale: 2/3 separate, 1/3 marital. Remaining 9: 2/3 separate, 1/3 marital. In units: sale 2 separate BTC, 1 marital BTC; remaining 6 separate BTC, 3 marital BTC. Good.

Potential nuance: "The character of the 6-bitcoin exchange into 90 ether" maybe wants 90 ether is 60 separate, 30 marital. Good.

Potential nuance: "The exact exchange, wallet, and donor evidence still needed" maybe expects specific missing records: exchange statements for 40 ETH, wallet transaction history for second wallet, donor's gift records. We'll list exact.

Potential nuance: "Whether to accept $50,000, settle conditionally, or seek targeted forensic discovery before final division." We can say "seek targeted forensic discovery; do not accept; conditional only if with robust protections." Good.

Let's consider adding a "sample order language" maybe not necessary but useful. Could include a short paragraph:
"The order should require Evan to produce within 21 days: (a) all wallet addresses and transaction hashes for the 40 ETH; (b) all exchange/OTC/bank records for the source address; (c) brother's wallet/exchange/bank records and gift documents; (d) permit a forensic expert to trace UTXOs and attribute the source; (e) preserve all devices and communications. If he fails, the 40 ETH shall be treated as marital and the 20% surcharge shall apply." This is good.

Need maybe mention "targeted" means not broad discovery of all financial records, but focused on second wallet. Good.

Potential issue: "Counsel must identify missing exchange, wallet, and donor records before final settlement and may seek a targeted forensic order rather than assume the source." We can explicitly state "Therefore, final settlement should not be entered until those records are identified and produced or the court resolves them." Good.

Need maybe mention "Evan's statement that transfers are too technical is not sufficient to avoid disclosure; the blockchain is public and courts can appoint experts." Good.

Let's think if there are any other calculations: If second wallet marital and concealment intentional, total marital value = known 140 + second 120 = 260. One-half = 130. Surcharge 24. Mira 154. Evan's total marital share after surcharge = 106. Evan's separate = 280. Total Evan = 386. Total all crypto = 540. Could include as check.

Maybe include a combined value table:
```
Category | Value | Mira's claim
Known marital | 140,000 | 70,000
Second provisional marital | 120,000 | 60,000 ordinary
Concealment surcharge | 24,000 | 24,000
Total to Mira | | 154,000
```
Good.

Need maybe mention "if the court awards the second wallet to Evan, the payment is $84k; if to Mira, Evan receives $36k offset." Good.

Need maybe mention "the separate known value $280k remains with Evan; if the final settlement equalizes all property, this may be offset against other marital assets, but for crypto claims alone it is not Mira's." Good.

Let's now prepare final answer with headings and tables. Ensure no analysis in final. Use clear legal reasoning.

Double-check arithmetic one more time:
Known total: 3 BTC * 50k = 150k; 90 ETH * 3k = 270k; total 420k. 2/3 = 280k separate, 1/3 = 140k marital. Yes.
Second: 40*3k = 120k. Ordinary half 60. 20% = 24. Total 84. Combined with known 154. Evan net from second 36. Total all: 540; separate 280; marital 260; ordinary split 130/130; surcharge shifts 24 from Evan to Mira => Mira 154, Evan 106 marital + 280 separate = 386. Yes.

Potential issue: If surcharge is 20% of concealed marital property's value "in addition to ordinary division," and the concealed property is marital, maybe the surcharge is 20% of $120k = $24k, but the ordinary division of the entire marital estate including known and second: known marital 140 + second 120 = 260; each 130. Then surcharge 24 to Mira, so Mira 154. Yes.

Need maybe mention "the surcharge is not a tax or fee; it is a property award shifting value from Evan to Mira." Good optional.

Potential issue: If Evan can prove the 40 ETH was a gift from brother, but the brother's source was marital? Not supplied. Need trace separate source. Good.

Potential issue: "A claimed gift requires evidence of donor intent and transaction source." If brother gave it, donor intent may be gift to Evan. But if no evidence, fails. Good.

Potential issue: "Property found in an undisclosed wallet during marriage is presumptively marital unless the holder traces a separate source." The second wallet is undisclosed, found during marriage? It contains 40 ETH arrived during marriage. The wallet may have been created before marriage? But property acquired during marriage. The rule says property found in undisclosed wallet during marriage presumptively marital unless traces separate source. Here tax records show arrived during marriage. So presumptive marital. Good.

Need maybe mention "if Evan can show the 40 ETH was acquired before marriage or from separate source, the presumption may be rebutted; currently no." Good.

Potential issue: "Evan disclosed one cryptocurrency wallet only after tax records exposed it" might imply he disclosed the known wallets only after tax records, not that second was disclosed. The second omitted. Good.

Let's think if any "ordinary marital expenses" rule could affect the second wallet? No.

Potential issue: The $120,000 joint account used to buy 4 BTC: if the joint account had $120k, that's marital. If spent on buying BTC, marital. No reimbursement. Good.

Potential issue: If the 4 BTC were bought during marriage but with marital funds, they are marital. If they appreciated, marital portion follows. Good.

Potential issue: "Commingling does not automatically destroy a separate claim when the units and later exchanges can be traced." Here after commingling no unit-specific identifiers, but the amounts are known. The separate claim survives proportionally. Good.

Need maybe mention "clear records" prove premarital 8; complete exchange records for purchase of 4; sale and exchange records. Good.

Let's consider if the "3 bitcoin sale" character should be based on the mixed pool of 12 at time of sale, not after? Yes. 3 out of 12, proportion 2/3. Good.

Need maybe mention "the sale of 3 BTC does not make the remaining 9 units 6 separate/3 marital? Yes." Good.

Potential nuance: If the sale proceeds were spent, the separate portion of the sale may have been used to pay marital expenses, reducing separate property. In final division, Evan's separate property is lower by the value of 2 BTC at sale. But since no current asset, no division. If the court considers dissipation, no reimbursement. Could mention "the value of the sold BTC is not added back to the estate under the supplied rules." Good.

Need maybe mention "the 6 BTC exchanged into 90 ETH: the 90 ETH is not 'new' marital property; it inherits 2/3 separate." Good.

Potential issue: If the 90 ETH includes 30 moved to cold wallet, and that cold wallet is separate? No, character same. Good.

Now final answer. Use professional tone. Let's write.

Need maybe include "Assumptions: values at valuation date; no other crypto; no other supplied exceptions; no separately compensable contribution." Good.

Let's draft final:

```
For Mira's benefit, the known holdings are 2/3 separate and 1/3 marital. The omitted 40 ETH is presumptively marital. Do not accept $50k; seek targeted forensic discovery. Conditional settlement only after/with production and stipulations.
```

Then detailed.

Let's ensure final includes "exact exchange, wallet, and donor evidence still needed" with maybe a table:
```
Missing record | Why needed | Source
Blockchain tx data for 40 ETH | establish source address, UTXO lineage | public blockchain, Evan
Source address exchange records | identify purchase/funding, owner | exchange/subpoena
Wallet addresses/custody | prove control and no other holdings | Evan
Brother's wallet/exchange/bank | prove donor source | brother/third parties
Gift intent docs/testimony | prove gift exception | brother/Evan
Tax/gift tax records | corroborate source/intent | Evan/brother
```
Good.

Need maybe mention "exact exchange statements" not just "exchange records". List:
- All exchange statements, trade tickets, deposit/withdrawal records, account registration, KYC, IP, bank funding for the 40 ETH and source address.
- OTC/decentralized records: swap logs, liquidity pool events, gas payer, router transactions.
Good.

Need maybe mention "wallet records" exact:
- All addresses, labels, creation dates, transaction history, cold wallet transfer records, device metadata, key custody.
Good.

Need maybe mention "donor records" exact:
- Brother's identity, wallet addresses, exchange/bank records, gift letter/message, testimony, Form 709.
Good.

Need maybe mention "if the source address is an exchange, subpoena account records; if brother, subpoena or admit." Good.

Need maybe mention "targeted forensic order" exact:
- Preservation, production deadlines, forensic expert, third-party subpoenas, adverse inference/default if noncompliance.
Good.

Potential issue: The final answer should not be legal advice? It's a role analysis. Fine.

Let's consider if we should mention "Mira's share of known marital crypto" as $70,000, but if the second wallet is provisional marital, her ordinary share of all provisional marital crypto is $130,000. We'll state both.

Potential issue: "Mira's one-half share of known marital crypto" might be after ordinary division, before surcharge. Yes.

Need maybe mention "the 20% surcharge is possible, not automatic, and applies only to the concealed marital portion." Good.

Potential issue: If Evan intentionally concealed the second wallet but it is later proven separate, no surcharge because no marital property concealed? Or maybe concealment of property that turns out separate? Surcharge based on concealed marital property; if not marital, no surcharge. We can state "if it is not marital, no surcharge on it; but concealment may still support sanctions/costs depending on circumstances." Maybe not necessary. But can mention.

Potential issue: If Evan's brother gave the 40 ETH as a gift to Evan during marriage, under some rules a gift to one spouse is separate. Under supplied rule, claimed gift requires evidence; if proven, the exception would apply. We can say "a proven separate-source gift could exclude the traced portion from marital." Good.

Need maybe mention "the tax records show arrival from external address but not donor intent; they are not enough to prove gift." Good.

Potential issue: "wallet-to-wallet transfers are too technical" could be addressed by saying blockchain transactions are public and traceable; but identity attribution requires records. Good.

Let's now write final answer with enough detail. Ensure no hidden chain-of-thought. final only. Use markdown.

One more check: The "second undisclosed wallet contains another 40 ether worth $120,000." If it is marital, ordinary division of that wallet: $60k. If concealment intentional, surcharge 20% of concealed marital property's value = 24k. But if the second wallet is "concealed marital property" and Evan omitted it, the "concealed marital property's value" could be the value of the property concealed ($120k) not just the portion he would have received. We use $120k. Good.

Potential issue: If the second wallet was omitted but the known 90 ETH includes 30 in cold wallet that may have been omitted? The prompt says second undisclosed wallet contains another 40 ether. We focus. If other concealment, surcharge could apply separately. Could add a sentence: "If the court finds additional intentional concealment of known marital holdings, the surcharge would be calculated on those concealed marital values as well; the facts supplied ask only about the second wallet." Good but maybe not needed.

Need maybe mention "Mira discovered through tax information request; preserve the records and use them to support intent." Good.

Let's final.
