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POST
/
95e61622bf6a8af293978377718e3b77
/
wallet
/
getnkfromnsk
wallet/getnkfromnsk
curl --request POST \
  --url https://tron-mainnet.core.chainstack.com/95e61622bf6a8af293978377718e3b77/wallet/getnkfromnsk \
  --header 'Content-Type: application/json' \
  --data '
{
  "value": "abcdefabcdefabcdefabcdefabcdefabcdefabcdefabcdefabcdefabcdefabcd"
}
'
{
  "value": "04b2c3d4e5f6789012345678901234567890123456789abcdef0123456789abcd"
}
TRON API method that derives a nullifier key (nk) from a nullifier secret key (nsk) for shielded TRC20 transactions. The nullifier key is used to generate nullifiers that prevent double-spending in the shielded transaction protocol.
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​
Parameters

  • value — nullifier secret key (nsk) as a 32‑byte (64‑hex) string, no 0x prefix.

​
Response

  • value — the derived nullifier key (nk) in hexadecimal format

​
Use case

The wallet/getnkfromnsk method is used for:
  • Deriving nullifier keys required for preventing double-spending in shielded transactions
  • Converting secret nullifier keys to public nullifier key components
  • Supporting the cryptographic foundation for privacy-preserving transaction verification
  • Enabling secure nullifier generation in shielded TRC20 implementations

​
curl example

Shell
curl --request POST \
  --url 'https://tron-mainnet.core.chainstack.com/95e61622bf6a8af293978377718e3b77/wallet/getnkfromnsk' \
  --header 'Content-Type: application/json' \
  --data '{
    "value": "abcdefabcdefabcdefabcdefabcdefabcdefabcdefabcdefabcdefabcdefabcd"
  }'
Ensure value is exactly 64 hexadecimal characters without a 0x prefix; otherwise the node returns a validation error indicating the expected length.

Body

application/json
​
value
string
required

Nullifier secret key (nsk) as a 32‑byte (64‑hex) string without 0x prefix.

Example:

"abcdefabcdefabcdefabcdefabcdefabcdefabcdefabcdefabcdefabcdefabcd"

Response

200 - application/json

Successfully derived nullifier key

​
value
string

The derived nullifier key (nk) in hexadecimal format (no 0x prefix)

Example:

"04b2c3d4e5f6789012345678901234567890123456789abcdef0123456789abcd"