Module check

Transaction checks.

Code in this file can freely assume that no pre-V4 transactions are present.

Functions

check_for_duplicates 🔒

Check for duplicate items in a collection.

coinbase_expiry_height

Returns Ok(()) if the expiry height for the coinbase transaction is valid according to specifications 7.1 and ZIP-203.

coinbase_outputs_are_decryptable

Checks compatibility with ZIP-212 shielded Sapling and Orchard coinbase output decryption

coinbase_tx_no_prevout_joinsplit_spend

Check that a coinbase transaction has no PrevOut inputs, JoinSplits, or spends.

consensus_branch_id

Checks the nConsensusBranchId field.

disabled_add_to_sprout_pool

Check if a transaction is adding to the sprout pool after Canopy network upgrade given a block height and a network.

has_enough_orchard_flags

Checks that the transaction has enough orchard flags.

has_inputs_and_outputs

Checks that the transaction has inputs and outputs.

joinsplit_has_vpub_zero

Check if JoinSplits in the transaction have one of its v_{pub} values equal to zero.

lock_time_has_passed

Checks if the transaction’s lock time allows this transaction to be included in a block.

non_coinbase_expiry_height

Returns Ok(()) if the expiry height for a non coinbase transaction is valid according to specifications 7.1 and ZIP-203.

spend_conflicts

Check if a transaction has any internal spend conflicts.

tx_transparent_coinbase_spends_maturity

Accepts a transaction, block height, block UTXOs, and the transaction’s spent UTXOs from the chain.

validate_expiry_height_max 🔒

Checks that the expiry height of a transaction does not exceed the maximal value.

validate_expiry_height_mined 🔒

Checks that a transaction does not exceed its expiry height.