Filters & field selection

Field selection

{
  "from_block": 0,
  "field_selection": {
    "block": ["height", "hash", "time"],
    "transaction": ["txid", "block_height", "version", "size_bytes"]
  }
}

Block field	Value
height	Block height
hash, previous_hash	Block hashes
time	Unix timestamp in seconds
raw, decoded	Full serialized hex or stored node-decoded block

Transaction field	Value
txid, block_height	ID and containing height
index	Zero-based position within the block
version, locktime, expiry_height	Public format metadata
size_bytes	Serialized byte length
transparent_input_count, transparent_output_count	Input/output array lengths
sapling_spend_count, sapling_output_count	Public Sapling component counts
orchard_action_count, ironwood_action_count	Public action counts
is_coinbase, transaction_type	Block-reward flag and public classification
vin, vout	Decoded transparent inputs/outputs
raw, decoded	Full transaction hex or node-decoded object

An empty selection array omits that collection. Selecting block decoded returns the full stored block, including its nested transactions.

Filters

Filter	Matches
txids, versions	Any listed ID or version
transparent_output_addresses	Any listed public output address
has_sapling, has_orchard, has_ironwood	Presence/absence of that pool's public components
shielded_pools	Any listed pool: sapling, orchard, ironwood
is_coinbase	The actual block-reward input marker

Different filter properties combine with AND; values within a list combine with OR. An empty list matches nothing. Transaction filters do not remove selected block headers.

Notes: Nested numbers in decoded JSON are strings; preserve exact values. Pool component counts do not count payments. Unknown or duplicate selections are rejected. See the full contract for field and filter bounds.