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Scalars

`Address`

An address of an externally owned account identified by a 32 byte string prefixed by 0x.

`AssetId`

A 32 byte unique ID used to identify a coin. On the testnet, the assetId is 0x0000000000000000000000000000000000000000000000000000000000000000.

`BlobId`

A unique hash identifier for a blob transaction.

`Bytes32`

32 bytes to hold arbitrary data, usually as a hex string. Bytes32 is the base type for cryptographic primitives like Address or Message.

`ContractId`

A wrapped 32byte hash that is used to uniquely identify a contract.

`HexString`

A way to pass in bytes as hex data. This is used for variable byte length types. Predicates and predicate data are always a hex string.

`Nonce`

A random or pseudo-random number generated for a single use to ensure data freshness and prevent replay attacks.

Sometimes referred to as a nonce. A unique, random value used to distinguish two things that are otherwise identical. This is used in contract deployments so you can deploy contracts that are otherwise exactly the same.

`Signature`

A cryptographic signature used to authorize messages and transactions.

`Tai64Timestamp`

A TAI 64 timestamp.

`TransactionId`

A unique 32 byte hash identifier for a transaction.

`TxPointer`

The location of the transaction in the block. It can be used by UTXOs as a reference to the transaction or by the transaction itself to make it unique.

`U16`

Unsigned 16 bit integer.

`U32`

Unsigned 32 bit integer.

`U64`

Unsigned 64 bit integer. The default GraphQL int scalar does not cover the range of values needed because the FuelVM word size is 64bit.

`UtxoId`

A unique 32 byte identifier for a UTXO.