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fingerprints.md

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List of known fingerprints

Bitcoin Core

No preset inputs, no user custom things, just the default Bitcoin Core as a software wallet.

  • Anti-fee-sniping with nLockTime
    • locktime is either current block height
    • or 10% randomly up to 100 blocks back, randomly
  • Sequence either MAX - 1 or MAX - 2 (RBF)
  • Changless txs within BnB changless window
  • Change is close to 0.01 BTC
    • Especially if there are a lot of inputs
  • Tx version 2
  • Negative EV inputs
  • Address types: P2PK, P2PKH, P2SH-P2WPKH, P2WPKH, P2TR

Electrum

No preset inputs, no user custom things, just the default Electrum as a software wallet.

  • Sequence either MAX - 1 or MAX - 2 (RBF)
  • Anti-fee-sniping with nLockTime (same behavior as Core)
  • BIP 69 sorted
  • Tx Version 2
  • Postive EV only unless SEND_MAX
  • Same input types
  • Change type same as input type
  • Address types: P2PKH, P2SH-P2WPKH, P2WPKH