Types

Reference for the object types @provablehq/veil-core returns from chain reads and record scans. For the account and client types (LocalAccount, RpcAccount, PublicClient, WalletClient), see Wallet Client and Public Client; for the transport types, see Transports.

Wire format

Block, transaction, and record types mirror the Provable REST API's JSON responses field for field. Field names stay snake_case — block_hash, previous_state_root, finalize_root — rather than being converted to camelCase, so a value copied from a raw HTTP response or from the Aleo explorer matches the property name on the parsed object exactly. Types that originate from the wallet-facing API instead (OwnedRecord, TransactionStatusResponse) use camelCase, matching the Provable wallet standard rather than the node's REST format.

Numeric widths

The rule across @provablehq/veil-core: number represents a u64 or smaller on-chain integer, bigint represents a u128 or larger one. Two kinds of exception exist:

• Some return types are widened for parity with viem: getBalance and getBlockNumber return bigint even though the underlying values are a u64 and a u32 respectively, matching viem's getBalance/getBlockNumber return types. Convert with Number() before passing a block height into an action that takes one (Number(await client.getBlockNumber())).
• Some u128 fields arrive as strings on the wire: Metadata.cumulative_weight and Metadata.cumulative_proof_target are u128 values, but JSON numbers cannot losslessly represent a u128, so the node sends them as decimal strings. Wrap with BigInt(...) to use them as numbers.

Transaction status

walletClient.transactionStatus and the block-level ConfirmedTransaction.status field both report a transaction's state as one of four strings:

Status	Meaning
'accepted'	Confirmed in a block; the transaction succeeded.
'rejected'	Confirmed in a block, but the transaction failed on-chain (e.g. an assertion failed).
'pending'	Present in the mempool, not yet confirmed.
'not_found'	Absent from both the confirmed and unconfirmed pools — never submitted, dropped, or expired.

Veil never borrows the EVM finality vocabulary for this state; on Aleo, "finalize" names a distinct concept (the on-chain execution of a transaction's mapping writes), not confirmation, and the status strings above are the complete set a caller needs to branch on. See Transaction Lifecycle for polling a transaction through these states.

Block types

import type { Block, Header, Metadata, Ratification, Solutions, Solution, PartialSolution, Finalize, ConfirmedTransaction } from '@provablehq/veil-core'

Block is what client.getBlock({ height }) and client.getBlockNumber() consumers see: the raw shape from the node's GET /{network}/block/{heightOrHash} endpoint.

Block

Field	Type	Description
block_hash	string	Hash of this block.
previous_hash	string	Hash of the preceding block.
header	Header	Merkle roots and metadata for the block.
authority	Record<string, unknown>	Beacon or quorum authority for the block. Opaque — shape varies by consensus variant.
transactions	ConfirmedTransaction[] (optional)	Transactions confirmed in this block.
ratifications	Ratification[]	Protocol-level credit movements (block and puzzle rewards).
solutions	Solutions	Puzzle solutions section.
aborted_solution_ids	string[]	Solution ids aborted during this block.
aborted_transaction_ids	string[]	Transaction ids aborted during this block.

Header

Field	Type	Description
previous_state_root	string	State root before this block.
transactions_root	string	Merkle root over the block's transactions.
finalize_root	string	Merkle root over finalize operations.
ratifications_root	string	Merkle root over ratifications.
solutions_root	string	Merkle root over puzzle solutions.
subdag_root	string	Merkle root over the consensus subdag.
metadata	Metadata	Network id, height, round, targets, and timestamps.

Metadata

Field	Type	Description
network	number	u16 — network id.
round	number	u64 — consensus round.
height	number	u32 — block height.
coinbase_target	number	u64 — coinbase puzzle target.
proof_target	number	u64 — prover solution target.
last_coinbase_target	number	u64 — coinbase_target of the most recent coinbase-producing block.
last_coinbase_timestamp	number	i64 — unix seconds of the most recent coinbase-producing block.
timestamp	number	i64 — unix seconds this block was produced.
cumulative_weight	string	u128 — cumulative consensus weight, delivered as a decimal string; wrap with BigInt(...).
cumulative_proof_target	string	u128 — cumulative proof target, delivered as a decimal string for the same reason.

Ratification, PartialSolution, Solution, Solutions

Type	Field	Type	Description
Ratification	type	string	Ratification kind, e.g. 'block_reward', 'puzzle_reward'.
Ratification	amount	number	u64 — microcredits moved by this ratification.
PartialSolution	solution_id	string	Solution identifier.
PartialSolution	epoch_hash	string	Epoch hash the solution was computed against.
PartialSolution	address	string	Prover's address.
PartialSolution	counter	number	u64 — puzzle nonce.
Solution	partial_solution	PartialSolution	The prover-supplied part of the solution.
Solution	target	number	u64 — solution target.
Solutions	version	number	u16 — solutions format version.
Solutions	solutions	Solution[] (optional)	Absent when the block has no puzzle solutions.

Finalize

Field	Type	Description
type	string	Operation kind, e.g. 'update_key_value', 'insert_key_value'.
mapping_id	string	Mapping the operation touched.
key_id	string	Id of the affected key.
value_id	string	Id of the resulting value.

ConfirmedTransaction

Field	Type	Description
status	string	'accepted' or 'rejected'. See Transaction status.
type	string	'execute', 'deploy', or 'fee'.
index	number	u32 — position within the block.
transaction	Record<string, unknown>	The raw transaction; parse it as a Transaction (below) for a typed view. Left widened here to avoid a circular import.
finalize	Finalize[]	Mapping changes the transaction caused.

Transaction types

import type { Transaction, Transition, Input, Output, Execution, FeeExecution, Deployment, VerifyingKey, Owner } from '@provablehq/veil-core'

Transaction is what client.getTransaction({ id }) returns — the shape from the node's GET /{network}/transaction/{id} endpoint. execution is present on execute transactions, deployment on deploy transactions, matching type.

Transaction

Field	Type	Description
type	string	'execute', 'deploy', or 'fee'.
id	string	On-chain transaction id (at1...).
execution	Execution (optional)	Present on execute transactions.
deployment	Deployment (optional)	Present on deploy transactions.
fee	FeeExecution	The credits.aleo fee transition paid for this transaction.
owner	Owner (optional)	Deployer signature; present on deploy transactions.

Execution / FeeExecution

Type	Field	Type	Description
Execution	transitions	Transition[]	Program-function calls made by this execution.
Execution	global_state_root	string	State root the proof was built against.
Execution	proof	string	The execution proof.
FeeExecution	transition	Transition	The single credits.aleo fee transition.
FeeExecution	global_state_root	string	State root the fee proof was built against.
FeeExecution	proof	string	The fee proof.

Transition

Field	Type	Description
id	string	Transition id (au1...).
program	string	Program id called.
function	string	Function/transition name called.
inputs	Input[] (optional)	Transition inputs.
outputs	Output[] (optional)	Transition outputs.
tpk	string	Transition public key.
tcm	string	Transition commitment.
scm	string (optional)	Signer commitment. Present on the wire; not carried by every SDK's transition type.

Input / Output

Type	Field	Type	Description
Input	type	string	Visibility kind: 'public', 'private', 'record', or 'external_record'.
Input	id	string	Input id.
Input	tag	string (optional)	Record tag; present on record inputs.
Input	value	string (optional)	Plaintext or ciphertext, depending on visibility; absent on record inputs.
Input	dynamic_id	string (optional)	Dynamic id; present when the input's record type is resolved via dynamic dispatch.
Output	type	string	Visibility kind: 'public', 'private', 'record', or 'future'.
Output	id	string	Output id.
Output	checksum	string (optional)	Output checksum.
Output	value	string (optional)	Plaintext or ciphertext value, depending on visibility.
Output	dynamic_id	string (optional)	Dynamic id; present when the output's record type is resolved via dynamic dispatch.

Deployment / VerifyingKey / Owner

Type	Field	Type	Description
Deployment	edition	number	u16 — deployment edition.
Deployment	program	string	Aleo program source.
Deployment	verifying_keys	VerifyingKey[]	One entry per program function.
VerifyingKey	(tuple)	[string, [string, string]]	[function_name, [vk_hash, certificate]].
Owner	address	string	Deployer's address.
Owner	signature	string	Deployer's signature over the deployment.

Record types

import type { OwnedRecord, OwnedRecordEncrypted, RecordView, RecordStatusFilter, RequestRecordsParameters } from '@provablehq/veil-core'

OwnedRecord and OwnedRecordEncrypted are camelCase, following the wallet-facing API rather than the node's REST wire format — a decrypted record never goes over the node's REST endpoints. See Working with Records for the scanning flow that produces these.

OwnedRecordEncrypted

Field	Type	Description
programName	string	Program the record belongs to.
tag	string	Record tag.
blockHeight	number (optional)	Height the record was created at.
blockTimestamp	number (optional)	Unix seconds the record was created at.
commitment	string (optional)	Record commitment.
functionName	string (optional)	Function that produced the record.
outputIndex	number (optional)	Position among the producing transition's outputs.
owner	string (optional)	Owner address.
recordCiphertext	string (optional)	Encrypted record ciphertext.
recordName	string (optional)	Record type name.
sender	string (optional)	Sender address.
spent	boolean (optional)	Whether the record has been spent.
transactionId	string (optional)	Producing transaction id.
transitionId	string (optional)	Producing transition id.
transactionIndex	number (optional)	Transaction's position within its block.
transitionIndex	number (optional)	Transition's position within its transaction.
uid	string (optional)	Opaque per-connection handle from a privacy-preserving wallet. Pass back as an InputRequest's uid to spend exactly this record. Absent from wallets that predate the privacy feature.
recordView	RecordView (optional)	Granted plaintext fields when the wallet withholds full plaintext under a recordAccess grant.

OwnedRecord extends OwnedRecordEncrypted with:

Field	Type	Description
recordPlaintext	string	Decrypted record plaintext.

RecordView

Field	Type	Description
fields	Record<string, string>	Granted field key to Aleo-encoded value string. Keys may be a record-body field name, a dotted struct path ('data.amount'), or a $-prefixed metadata token ('$commitment').

RecordStatusFilter is 'all' | 'spent' | 'unspent'.

RequestRecordsParameters — parameters for requestRecords, scoping the scan to one program's records.

Field	Type	Description
program	string	Program whose records to scan.
includePlaintext	boolean (optional)	Whether to include plaintext on each record. Defaults to true.
statusFilter	RecordStatusFilter (optional)	Filter by spent status. Defaults to 'all'.

Record Scanning Service (RSS) types

import type { RecordFilter, ResponseFilter, OwnedRecordsRequest } from '@provablehq/veil-core'

These shape requests to a hosted Record Scanning Service scanner.

Type	Field	Type	Description
RecordFilter	commitments	string[] (optional)	Restrict the scan to these commitments.
RecordFilter	start / end	number (optional)	Lower/upper bound of the block-height range to scan.
RecordFilter	programs	string[] (optional)	Restrict the scan to these programs.
RecordFilter	records	string[] (optional)	Restrict the scan to these record type names.
RecordFilter	functions	string[] (optional)	Restrict the scan to records produced by these functions.
RecordFilter	resultsPerPage	number (optional)	Number of records per page of results.
RecordFilter	page	number (optional)	Page of results to return.
RecordFilter	response	ResponseFilter (optional)	Field-selection mask applied to each returned record.
ResponseFilter	(any field)	boolean (optional)	Set a field true to include it on each returned record, e.g. commitment, owner, blockHeight.
OwnedRecordsRequest	uuid	string	Scan session identifier issued by the service.
OwnedRecordsRequest	unspent	boolean (optional)	When true, return only unspent records.
OwnedRecordsRequest	filter	RecordFilter (optional)	Narrows the scan as described above.