Sign API — per-coin functions → sign()

Every v1 getXxxSignedTransaction / getXxxSignedMessage becomes one sign() call — except getHederaSignedMessage, which has no v2 counterpart (Hedera has no signMessage; the request returns method_not_found -32601). The network's payload.transaction shape is on its Chain Reference page.

warning

The biggest semantic change: v1 had three input patterns — ① EVM positional, ② {unsignedTx,…}, and ③ {coinType, sigHash, …} (you computed the hash yourself). v2 takes the full transaction object for every network — you no longer pre-compute a sigHash. Some families also accept a payload you built yourself, alongside their structured forms (see each network page).

EVM example

await dcent.getEthereumSignedTransaction(
  dcent.coinType.ETHEREUM, '0x0', '0x3b9aca00', '0x5208',
  '0xRecipient', '0x2386f26fc10000', '0x', "m/44'/60'/0'/0/0",
  1, 2, { maxFeePerGas:'0x77359400', maxPriorityFeePerGas:'0x3b9aca00' })

await dcent.sign({
  method:'signTransaction',
  chainId:'eip155:1/slip44:60',
  payload:{
    keyPath:"m/44'/60'/0'/0/0",
    transaction:{
      type:2,
      nonce:'0x0',
      gasLimit:'0x5208',
      maxFeePerGas:'0x77359400',
      maxPriorityFeePerGas:'0x3b9aca00',
      to:'0xRecipient',
      value:'0x2386f26fc10000',
      data:'0x'
    }
  }
})

Mapping table (v1 input pattern → v2)

v1 function	pattern	v2
`getEthereumSignedTransaction`	① positional	`signTransaction` · eip155:N
`getTokenSignedTransaction`	① positional	`signTransaction` · eip155 (data=calldata)
`getBitcoinSignedTransaction`	② tx object	`signTransaction` · bip122
`getXrpSignedTransaction`	② tx object	`signTransaction` · xrpl:0
`getTronSignedTransaction`	② unsignedTx	`signTransaction` · tron
`getTrcTokenSignedTransaction`	② unsignedTx	`signTransaction` · tron
`getKlaytnSignedTransaction`	① positional	`signTransaction` · Kaia (`eip155:8217/slip44:60`)
`getHederaSignedTransaction`	② unsignedTx	`signTransaction` · hedera
`getStellarSignedTransaction`	② unsignedTx	`signTransaction` · stellar
`getCosmosSignedTransaction`	③ sigHash	`signTransaction` · cosmos:cosmoshub-4
`getTezos/Vechain/Near/Havah/Polkadot/AlgorandSignedTransaction`	③ sigHash	`signTransaction` · (network chainId)
`getParachainSignedTransaction`	③ sigHash	`signTransaction` · (parachain chainId, e.g. Astar)
`getEthereumSignedMessage`	—	`signMessage` · eip155:N
`getSignedMessage` (coinType)	—	`signMessage` · (network chainId)
`getHederaSignedMessage`	—	No v2 counterpart — `method_not_found` (`-32601`)
`getSignedData` (per the v1 guide: hex data, e.g. an EIP-712 `0x1901…` pre-image, hashed and signed)	—	`signTypedData` · eip155:N — v2 takes the typed-data JSON (`data`, `version`), not the encoded hex v2 `signData` (Cardano CIP-8 / CIP-30 / CIP-95) is a new verb with no v1 counterpart

EVM example​

Mapping table (v1 input pattern → v2)​

EVM example

Mapping table (v1 input pattern → v2)