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The Official sCrypt 1Sat Ordinals SDK

sCrypt offers its official 1Sat Ordinals SDK named scrypt-ord.

The SDK offers an easy to use interface for deploying and transferring 1Sat Ordinals and augmenting them with the power of sCrypt smart contracts.

It facilitates the development of smart contracts for both non-fungible tokens (NFTs) and fungible tokens (FTs). You can also inscribe NFT's and BSV20 at sCrypt and a video guide on how to inscribe directly can be found at YouTube.


It is recommended that you create an sCrypt project using our CLI tool. Once you have the project set up, simply run the following command:

npm i scrypt-ord

Base Classes

scrypt-ord provides base classes that can be extended with custom smart contract functionality. Unlike the SmartContract class, which you would typically extend for a regular sCrypt smart contract, here you should extend these base classes to integrate your smart contract with 1Sat ordinals functionality.

Non-fungible tokens (NFTs):

  • OrdinalNFT

Fungible tokens (FTs):

  • BSV20
  • BSV21

There are also pre-made classes that represent standard 1Sat transfers using the widely employed P2PKH mechanism:

  • OrdiNFTP2PKH
  • BSV20P2PKH
  • BSV21P2PKH

Suppose you wish to lock an ordinal token using a custom hash puzzle contract, you would define the smart contract class as shown below:

class HashLockNFT extends OrdinalNFT {
hash: Sha256

constructor(hash: Sha256) {
this.hash = hash

public unlock(message: ByteString) {
assert(this.hash == sha256(message), 'hashes are not equal')

For a deeper exploration, please refer to the respective subsections:


When you use sCrypt 1Sat Ordinals SDK, we recommend that you use OrdiProvider as the provider. This allows your transaction to be indexed instantly, instead of waiting for it to be mined into a block.

export function getDefaultSigner(): TestWallet {
return new TestWallet(
new OrdiProvider(bsv.Networks.mainnet)

Indexer APIs