testing-reference.md

Testing Reference

Example Transactions for Manual Testing

1. Whirlpool CoinJoin (5 equal outputs, 0.05 BTC pool)

• TXID: 323df21f0b0756f98336437aa3d2fb87e02b59f1946b714a7b09df04d429dec2
• Pattern: 5 inputs, 5 outputs, all outputs exactly 5,000,000 sats
• Expected score: A+ (CoinJoin detected, high entropy)
• https://mempool.space/tx/323df21f0b0756f98336437aa3d2fb87e02b59f1946b714a7b09df04d429dec2

2. WabiSabi / Wasabi CoinJoin (massive, many equal outputs)

• TXID: fb596c9f675471019c60e984b569f9020dac3b2822b16396042b50c890b45e5e
• Pattern: 327 inputs, 279 outputs, power-of-2 denominations with many equal tiers
• Expected score: A+ (large CoinJoin, very high entropy)
• https://mempool.space/tx/fb596c9f675471019c60e984b569f9020dac3b2822b16396042b50c890b45e5e

3. JoinMarket CoinJoin (maker/taker)

• TXID: 4f112abd2eefe3484a7bbf7c1731f784cba19de677468835145e9c448fb18b7d
• Pattern: 2 inputs, 4 outputs, 2 equal outputs + 2 change outputs
• Expected score: B-C (small CoinJoin, limited equal outputs)
• https://mempool.space/tx/4f112abd2eefe3484a7bbf7c1731f784cba19de677468835145e9c448fb18b7d

4. Taproot (P2TR) Transaction

• TXID: 0bf67b1f05326afbd613e11631a2b86466ac7e255499f6286e31b9d7d889cee7
• Pattern: 1 P2TR input, 2 outputs, contains OP_RETURN with BitGo message
• Expected score: D-C (OP_RETURN data, round amounts, script mix)
• https://mempool.space/tx/0bf67b1f05326afbd613e11631a2b86466ac7e255499f6286e31b9d7d889cee7

5. Multisig Transaction (bare P2MS)

• TXID: 60a20bd93aa49ab4b28d514ec10b06e1829ce6818ec06cd3aabd013ebcdc4bb1
• Pattern: 3 inputs, 3 outputs, 1-of-2 bare multisig output
• Expected score: D-C (early Bitcoin, CIOH, legacy types)
• https://mempool.space/tx/60a20bd93aa49ab4b28d514ec10b06e1829ce6818ec06cd3aabd013ebcdc4bb1

6. OP_RETURN Data ("charley loves heidi")

• TXID: 8bae12b5f4c088d940733dcd1455efc6a3a69cf9340e17a981286d3778615684
• Pattern: 1 input, 2 outputs (1 op_return with ASCII text, 1 P2PKH)
• Expected score: C-D (OP_RETURN metadata, legacy address)
• https://mempool.space/tx/8bae12b5f4c088d940733dcd1455efc6a3a69cf9340e17a981286d3778615684

7. Extreme Address Reuse (Satoshi's Genesis Address)

• Address: 1A1zP1eP5QGefi2DMPTfTL5SLmv7DivfNa
• Pattern: 67,762 funded outputs, 56,713 transactions
• Expected score: F (extreme reuse, legacy P2PKH)

8. Simple Legacy P2PKH (1-in 2-out)

• TXID: 0b6461de422c46a221db99608fcbe0326e4f2325ebf2a47c9faf660ed61ee6a4
• Pattern: 1 P2PKH input, 2 P2PKH outputs
• Expected score: C (legacy types, change likely identifiable)
• https://mempool.space/tx/0b6461de422c46a221db99608fcbe0326e4f2325ebf2a47c9faf660ed61ee6a4

9. Batched Exchange Withdrawal (143 outputs)

• TXID: 3d81a6b95903dd457d45a2fc998acc42fe96f59ef01157bdcbc331fe451c8d9e
• Pattern: 1 input, 143 outputs, mixed address types
• Expected score: Variable (many outputs but single input)
• https://mempool.space/tx/3d81a6b95903dd457d45a2fc998acc42fe96f59ef01157bdcbc331fe451c8d9e

10. Dust Attack (555 sats)

• TXID: 655c533bf059721cec9d3d70b3171a07997991a02fedfa1c9b593abc645e1cc5
• Pattern: Sends 555 sats (dust) to target address for tracking
• Expected score: F (deterministic address reuse in I/O triggers compound cap)
• https://mempool.space/tx/655c533bf059721cec9d3d70b3171a07997991a02fedfa1c9b593abc645e1cc5

11. First Taproot Script-Path Spend (achow101, block 709635)

• TXID: 37777defed8717c581b4c0509329550e344bdc14ac38f71fc050096887e535c8
• Pattern: 2 P2TR inputs, 1 P2WPKH output (script path spend)
• Expected score: C (CIOH, low entropy, Bitcoin Core fingerprint)
• https://mempool.space/tx/37777defed8717c581b4c0509329550e344bdc14ac38f71fc050096887e535c8

Test Addresses

Address	Type	Reuse	Notes
1A1zP1eP5QGefi2DMPTfTL5SLmv7DivfNa	P2PKH	Extreme	Satoshi's Genesis address
bc1qar0srrr7xfkvy5l643lydnw9re59gtzzwf5mdq	P2WPKH	Low	Common SegWit test address
bc1p5d7rjq7g6rdk2yhzks9smlaqtedr4dekq08ge8ztwac72sfr9rusxg3297	P2TR	None	Taproot address

Score Validation Matrix

Scenario	Type	Base	Expected Grade	Score	Key Heuristics
Whirlpool 5x5	tx	70	A+	100	H4 (+30), H5 (+15), anon (+5), script (+2)
WabiSabi 300+	tx	70	A+	100	H4 (+25), H5 (+15), anon (+5)
Simple legacy P2PKH	tx	70	C	53	H2 (-10, compound -4), H11 (-3), anon (-1), script (-1)
Taproot + OP_RETURN	tx	70	C	57	H5 (-5), H7 (-5), H11 (-2), script (-1)
JoinMarket 2x equal	tx	70	B	86	H4 (+12 STONEWALLx2), H5 (+2), anon (+1), script (+2), timing (-1)
Bare multisig	tx	70	F	19	H2 (-20), script-multisig (-8), H1 (-10), H3 (-6), H5 (-3), H11 (-2), anon (-1), script (-1)
OP_RETURN charley	tx	70	C	50	H2 (-15), H7 (-5), H11 (-2), script (+2)
Dust attack 555 sats	tx	70	F	24	H2 (-20), dust (-8), H5 (-3), H11 (0), script (+2), compound-cap (-15)
Batch withdrawal 143	tx	70	C	57	H5 (-3), script (-3), H11 (-2), anon (+1), fan-out (-3), exchange (-3)
Taproot script-path	tx	70	C	56	H3 (-6), H5 (-3), H6 (-2), H11 (-3)
Satoshi's address	addr	93	F	0	H8 (-93), H10 (-5), H9 dust (-8), spending (-5), cold (+2)
SegWit reused 88x	addr	93	F	0	H8 (-90), H9 dust (-8), H9 utxo (-3), spending (-5)
Fresh Taproot (no reuse)	addr	93	A+	100	H8 (+3), H10 (0), H9 (+2), cold (+2)

Research References

Community-provided example transactions for future heuristic development. These document on-chain patterns of P2P exchanges, sweeps, and wallet fingerprinting. Provided by community reviewer (March 2026).

12. HodlHodl Escrow (2-of-3 Multisig)

• TXID: 7723b1bba65cfe805e9dc19fd3981791bdd0984afd5d144bf78abc3bdd522577
• Pattern: P2SH (2-of-3 multisig) spend to 2 P2WPKH outputs (85,829 + 696 sats)
• Identifiable by: 2-of-3 multisig structure visible in witness data when escrow is spent
• Privacy lesson: Multisig escrow pattern is identifiable on-chain, links trade participants
• https://mempool.space/tx/7723b1bba65cfe805e9dc19fd3981791bdd0984afd5d144bf78abc3bdd522577

13. HodlHodl Escrow Release

• TXID: 6a3dd5ef3972c83395499ed5128b5f62d10af35ac00c9acc74bedc5a1da53a9d
• Pattern: P2SH (2-of-3 multisig) spend to 3 P2WPKH outputs (1,100,275 + 8,959 + 995 sats)
• Critical: Output address bc1qqmmzt02nu4rqxe03se2zqpw63k0khnwq959zxq appears in BOTH this tx and the escrow tx above - fee address reuse links independent trades
• Privacy lesson: Platform fee addresses create cross-trade linkability even on non-custodial exchanges
• https://mempool.space/tx/6a3dd5ef3972c83395499ed5128b5f62d10af35ac00c9acc74bedc5a1da53a9d

14. Sweep / Wallet Hop (Different nLockTime)

• TXID: d41bdca5474d5405153fe9cd57163eea72f16534ea0ac0ad3fd8d46aed2e3a09
• Pattern: 1 P2WPKH input -> 1 P2WPKH output (973,702 -> 971,677 sats)
• Identifiable by: Zero entropy (1-in-1-out), trivially traceable. Different nLockTime/nVersion from prior tx suggests wallet software change ("wallet hop")
• Privacy lesson: Wallet hops (sending to yourself in a different wallet) provide zero unlinkability - chain analysts follow 1-in-1-out hops without difficulty
• https://mempool.space/tx/d41bdca5474d5405153fe9cd57163eea72f16534ea0ac0ad3fd8d46aed2e3a09

Bisq Fee Addresses (Known DAO Addresses)

• Taker fee: bc1qwxsnvnt7724gg02q624q2pknaqjaaj0vff36vr (~2,238 txs, extreme reuse, expected F)
• Maker fee: bc1qfy0hw3txwtkr6xrhk965vjkqqcdn5vx2lrt64a (~417 txs, significant reuse, expected F)
• Identifiable by: Any tx sending to these addresses is identifiable as a Bisq trade fee payment
• Two independent fingerprinting signals: Known DAO fee addresses + 2-of-2 multisig escrow pattern
• Privacy lesson: Decentralized exchanges have better privacy than centralized ones, but their on-chain escrow patterns are still identifiable

Future Research Areas

These require either multi-transaction graph analysis (architectural change) or more sample data:

• Bisq fingerprinting: 2-of-2 multisig escrow + known DAO fee addresses = two independent detection signals. Community reviewer to provide more samples.
• HodlHodl fingerprinting: 2-of-3 multisig + reused fee collection address. Two example txs captured above.
• Wallet hop detection: Cross-tx nLockTime/nVersion changes indicating wallet software switch. Requires multi-tx graph analysis.
• P2SH/P2WSH script unwrapping: Extracting M-of-N from witness data to distinguish escrow from cold storage multisig.