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POST
Build the DUST mapping update tx (Cardano)

Authorizations

X-Api-Key
string
header
required

API key (programmatic access — recommended)

Send your API key in the X-Api-Key header. Keys start with nxs_ and are created in the dashboard (or via POST /api/keys with a session JWT).

Each key is scoped to one chain and one network (for example cardano-mainnet), fixed at creation time. It cannot query a different network on the same chain, and it cannot query a different chain at all. A mismatched network parameter returns 400 Network Mismatch. Create one key per chain and network under the same account.

This is the credential most integrations should use.

Path Parameters

network
string
required

Body

application/json
cardano_address
string
required
Minimum string length: 1
Pattern: ^addr(_test)?1[a-z0-9]+$
registration_utxo_tx_hash
string
required
Minimum string length: 1
Pattern: ^[0-9a-fA-F]{64}$
registration_utxo_output_index
integer<int32>
required
Required range: 0 <= x <= 65535
payment_key_hash_hex
string
Pattern: ^[0-9a-fA-F]{56}$
dust_address_hex
string
Pattern: ^([0-9a-fA-F]{2}){1,33}$

Response

200 - */*

OK

status
string
tx_cbor
string
tx_hash
string
validator_address
string
validator_script_hash
string
datum_cbor
string
redeemer_cbor
string
mint_asset
object
note
string
sponsored_collateral_ref
string