API Reference

Reconstruct signed transaction from signature components

post
https://api.contributiondao.com/api/v1.0/ethereum/transactions/prepare

Reconstructs a fully signed Ethereum transaction using raw signature components (r, s, v).

This endpoint is designed for custodian services or integrators that perform the signing process
externally (generating r, s, v) and need the backend to assemble these components into a
valid RLP-encoded signed transaction string (signedTxSerialized) ready for broadcasting.

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Body Params
string
required

The UUID of the account.

string
required

The original unsigned RLP-encoded transaction hex string.

string
required

The 'r' component of the ECDSA signature (32 bytes hex).

string
required

The 's' component of the ECDSA signature (32 bytes hex).

string
required

The 'v' component (recovery ID + chain ID replay protection).

Responses

401

Access token or App Id is missing or invalid

Updated about 1 month ago

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Updated about 1 month ago

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