POST
/
95e61622bf6a8af293978377718e3b77
/
wallet
/
createspendauthsig
wallet/createspendauthsig
curl --request POST \
  --url https://tron-mainnet.core.chainstack.com/95e61622bf6a8af293978377718e3b77/wallet/createspendauthsig \
  --header 'Content-Type: application/json' \
  --data '{
  "ask": "0x0aa1b2c3d4e5f6789012345678901234567890123456789012345678901234567890",
  "alpha": "0x0bb2c3d4e5f6789012345678901234567890123456789012345678901234567890ab",
  "tx_hash": "0x0cc3d4e5f6789012345678901234567890123456789012345678901234567890abcd",
  "sighash_type": "0x01"
}'
{
  "signature": "0x0dd4e5f6789012345678901234567890123456789012345678901234567890abcdef",
  "randomized_pk": "0x0ee5f6789012345678901234567890123456789012345678901234567890abcdef01"
}
TRON API method that creates a spending authorization signature for shielded TRC20 transactions. This signature authorizes the spending of shielded notes and is a critical component of the privacy-preserving transaction protocol.
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​
Parameters

  • ask — the authentication secret key used for signing
  • alpha — the alpha parameter for randomization
  • tx_hash — the transaction hash being authorized
  • sighash_type — the signature hash type (typically SIGHASH_ALL)

​
Response

  • signature — the generated spending authorization signature
  • randomized_pk — the randomized public key used in the signature

​
Use case

The wallet/createspendauthsig method is used for:
  • Authorizing the spending of shielded notes in privacy transactions
  • Creating cryptographic signatures that prove spending authority without revealing identity
  • Supporting the zero-knowledge proof system in shielded transactions
  • Enabling secure authorization of shielded TRC20 transfers

Body

application/json
​
ask
string
required

Authentication secret key for signing

Example:

"0x0aa1b2c3d4e5f6789012345678901234567890123456789012345678901234567890"

​
alpha
string
required

Alpha parameter for randomization

Example:

"0x0bb2c3d4e5f6789012345678901234567890123456789012345678901234567890ab"

​
tx_hash
string
required

Transaction hash being authorized

Example:

"0x0cc3d4e5f6789012345678901234567890123456789012345678901234567890abcd"

​
sighash_type
string
required

Signature hash type

Example:

"0x01"

Response

200 - application/json

Successfully created spending authorization signature

​
signature
string

Generated spending authorization signature

Example:

"0x0dd4e5f6789012345678901234567890123456789012345678901234567890abcdef"

​
randomized_pk
string

Randomized public key used in signature

Example:

"0x0ee5f6789012345678901234567890123456789012345678901234567890abcdef01"