TypeScript: Registry
RegistryClient is the on-chain half of .nota files. It wraps the NotaRegistry contract: you register a resource once, the contract stores ownership and proof hash, and later anyone can resolve aliases or fetch records without needing the original file. Access it via ntm.registry.
Write methods
All writes require the Notareum instance to be configured with asigner.
registerResource
Registers a new resource, returning the transaction hash:
(resourceType, chainId, keccak256(identifier)). Aliases must be globally unique; re-using an existing alias reverts with AliasAlreadyTaken.
revokeResource
Only the current owner can revoke. Revocation does not delete the record; it flags isRevoked = true, which wallets and explorers should treat as a terminal state:
addResourceType / removeResourceType
Governance-only. Add custom resource types beyond the initial six (ADDRESS, TRANSACTION, CONTRACT, IPFS, NFT, METADATA):
Read methods
getResource
Fetches the full ResourceInfo record:
ResourceInfo includes owner, resourceType, chainId, proofHash, alias, verificationLevel, registeredAt, lastUpdatedAt, and isRevoked.
resolveAlias
Resolves a human-readable alias to the bytes32 resource ID it points to:
isValidResourceType / getResourceTypeName
Introspection helpers over the governance-managed resource type registry:
Utility: computeResourceId
Computes a resource ID locally, off-chain, without any RPC call. Identical to the on-chain derivation, so you can predict the ID before sending a transaction:
Full example
See also
- Resource Registry protocol page
- Verification client for elevating registered resources
- Registering a Resource guide

