Module breez_sdk_core::bitcoin::policy

Expand description

Bitcoin policy.

This module exposes some constants and functions used in the reference implementation and which, as a consequence, define some network rules.

§Warning

While the constants present in this module are very unlikely to change, they do not define Bitcoin. As such they must not be relied upon as if they were consensus rules.

These values were taken from bitcoind v0.21.1 (194b9b8792d9b0798fdb570b79fa51f1d1f5ebaf).

Constants§

  • DEFAULT_BYTES_PER_SIGOP
    The number of bytes equivalent per signature operation. Affects transaction relay through the virtual size computation.
  • DEFAULT_INCREMENTAL_RELAY_FEE
    The minimum incremental feerate (despite the name), in sats per virtual kilobyte for RBF.
  • DEFAULT_MEMPOOL_EXPIRY
    Default number of hours for an unconfirmed transaction to expire in most of the network nodes’ mempools.
  • DEFAULT_MIN_RELAY_TX_FEE
    Minimum feerate, in sats per virtual kilobyte, for a transaction to be relayed by most nodes on the network.
  • DUST_RELAY_TX_FEE
    The minimum feerate, in sats per kilo-virtualbyte, for defining dust. An output is considered dust if spending it under this feerate would cost more in fee.
  • MAX_STANDARD_TX_SIGOPS_COST
    Maximum number of sigops in a standard tx.
  • MAX_STANDARD_TX_WEIGHT
    Maximum weight of a transaction for it to be relayed by most nodes on the network
  • MIN_STANDARD_TX_NONWITNESS_SIZE
    Minimum non-witness size for a standard transaction (1 segwit input + 1 P2WPKH output = 82 bytes)

Functions§