Bitcoin Multi-Sig Transaction

Quick PoC to transact Bitcoins in a single transaction with multiple participants. Helps obscure coin flow and might even reduce transaction size (and thus transaction costs).

Part of this blog post: Bringing Obfuscation to the Bitcoin Blockchain

Example

Alice and Bob both agreed to send exactly 0.00000600 BTC to their target of choice. The below transaction obfuscated the coin flow as you can no longer differentiate who owns which output of 0.00000600 BTC.

{
  "txid": "b5e757cb0a310cce731f184388cac1cf6f82f032067bcda7e108391810e05a71",
  "hash": "b5e757cb0a310cce731f184388cac1cf6f82f032067bcda7e108391810e05a71",
  "version": 1,
  "size": 187,
  "vsize": 187,
  "weight": 748,
  "locktime": 0,
  "vin": [
    {
      "txid": "8ea818e2335e3aab8286fe3ddbff23a3a8ca05b26c9331f232ed6fd04c1aaba7",
      "vout": 1,
      "scriptSig": {
        "asm": "",
        "hex": ""
      },
      "sequence": 4294967295
    },
    {
      "txid": "8ea818e2335e3aab8286fe3ddbff23a3a8ca05b26c9331f232ed6fd04c1aaba7",
      "vout": 3,
      "scriptSig": {
        "asm": "",
        "hex": ""
      },
      "sequence": 4294967295
    }
  ],
  "vout": [
    {
      "value": 0.00000600,
      "n": 0,
      "scriptPubKey": {
        "asm": "OP_HASH160 cb9ac6d00534e4595960b77259678296c9094b18 OP_EQUAL",
        "hex": "a914cb9ac6d00534e4595960b77259678296c9094b1887",
        "address": "3LFaWZ1zoxzAXkG94E5Hw5PfjnhQz2aeMR",
        "type": "scripthash"
      }
    },
    {
      "value": 0.00000600,
      "n": 1,
      "scriptPubKey": {
        "asm": "OP_HASH160 a984323e2d9b262fda7694cdeddcef3ac3ce204c OP_EQUAL",
        "hex": "a914a984323e2d9b262fda7694cdeddcef3ac3ce204c87",
        "address": "3H9LV7w89mqWP4HTjGtRamvbdhRr72KXXh",
        "type": "scripthash"
      }
    },
    {
      "value": 0.00003760,
      "n": 2,
      "scriptPubKey": {
        "asm": "0 0290a8cf8911116463c71883045f667e50c48eae",
        "hex": "00140290a8cf8911116463c71883045f667e50c48eae",
        "address": "bc1qq2g23nufzygkgc78rzpsghmx0egvfr4wkf6n3u",
        "type": "witness_v0_keyhash"
      }
    }
  ]
}