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transactions.md

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Vaultaic transactions

All transactions use native Segwit.

vault_tx

The funding transaction.

IN

We don't care about the inputs.

OUT

At least one output paying to the following script:

0x00 0x20 SHA256(<script>)

With

<script> = 4 <pubkey1> <pubkey2> <pubkey3> <pubkey4> 4 OP_CHECKMULTISIG

unvault_tx

The transaction which spends the funding transaction, only spendable after 6 blocks.

  • version: 2
  • locktime: 0

IN

  • count: 1
  • inputs[0]:
    • txid: <vault_tx txid>
    • sequence: 0xffffffff
    • scriptSig: <empty>
    • witness: 0 <sig pubkey1> <sig pubkey2> <sig pubkey3> <sig pubkey4>

OUT

  • count: 1
  • outputs[0]:
    • value: <vault_tx output value - tx_fee>
    • scriptPubkey: 0x00 0x20 SHA256(<script>), with 
      <script> =
<trader1_pubkey> OP_CHECKSIG OP_SWAP <trader2_pubkey> OP_CHECKSIG OP_ADD OP_SWAP <stakeholder_pubkey> OP_CHECKSIG OP_ADD OP_DUP 3 OP_EQUAL
OP_IF
    OP_SWAP <D> OP_CHECKSIGVERIFY
OP_ELSE
    2 OP_EQUALVERIFY <SERVER> OP_CHECKSIGVERIFY 6 OP_CHECKSEQUENCEVERIFY
OP_ENDIF

spend_tx

The transaction which spends the unvaulting transaction, only spendable after 6 blocks.

  • version: 2
  • locktime: 0

IN

  • count: 1
  • inputs[0]:
    • txid: <unvault_tx txid>
    • sequence: 0x00000006
    • scriptSig: <empty>
    • witness: 0 <sig pubkey1> <sig pubkey2> <sig pubkey3> <sig pubkey4> <unvault_tx's locking script>

OUT

  • count: 1
  • outputs[0]:
    • value: <vault_tx output value - tx_fee>
    • scriptPubkey: not specified

cancel_tx

This transaction takes coins from an unvault_tx and locks them to a vault txout (4-of-4). Not to be confused with the emergency transaction spending from an unvault_tx, the keys used for the 4of4 here are the "usual" vault ones.

This transaction is to be used by default if one of the stakeholders doesn't know about an on-going spending from a vault.

  • version: 2
  • locktime: 0

IN

  • count: 1
  • inputs[0]:
    • txid: <unvault_tx txid>
    • sequence: 0xffffffff
    • scriptSig: <empty>
    • witness: 0 <sig pubkey1> <sig pubkey2> <sig pubkey3> <sig pubkey4> <unvault_tx's locking script>

OUT

  • count: 1
  • outputs[0]:
    • value: <unvault_tx output value - fees>
    • scriptPubkey: 0x00 0x20 SHA256(<script>), with 
      <script> = 4 <pubkey1> <pubkey2> <pubkey3> <pubkey4> 4 OP_CHECKMULTISIG

emergency_txs

vault_emergency_tx

This transaction takes coins from a vault_tx and locks them to a 4-of-4 (with the 4 keys being differents from the vault keys).

  • version: 2
  • locktime: 0

IN

  • count: 1
  • inputs[0]:
    • txid: <vault_tx txid>
    • sequence: 0xffffffff
    • scriptSig: <empty>
    • witness: 0 <sig pubkey1> <sig pubkey2> <sig pubkey3> <sig pubkey4> <vault_tx's locking script>

OUT

  • count: 1
  • outputs[0]:
    • value: <vault_tx output value - fees>
    • scriptPubkey: 0x00 0x20 SHA256(<script>), with 
      <script> = 4 <emer_pubkey1> <emer_pubkey2> <emer_pubkey3> <emer_pubkey4> 4 OP_CHECKMULTISIG

unvault_emergency_tx

This transaction takes coins from an unvault_tx and locks them to a 4-of-4 (with the 4 keys being differents from the vault keys).

  • version: 2
  • locktime: 0

IN

  • count: 1
  • inputs[0]:
    • txid: <unvault_tx txid>
    • sequence: 0xffffffff
    • scriptSig: <empty>
    • witness: 0 <sig pubkey1> <sig pubkey2> <sig pubkey3> <sig pubkey4> <unvault_tx's locking script>

OUT

  • count: 1
  • outputs[0]:
    • value: <unvault_tx output value - fees>
    • scriptPubkey: 0x00 0x20 SHA256(<script>), with 
      <script> = 4 <emer_pubkey1> <emer_pubkey2> <emer_pubkey3> <emer_pubkey4> 4 OP_CHECKMULTISIG