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TRON API method that derives an incoming viewing key (ivk) from authentication key (ak) and nullifier key (nk) for shielded TRC20 transactions. The incoming viewing key is used to scan for incoming shielded payments.
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Parameters

  • ak — authentication key as a 32‑byte (64‑hex) string, no 0x prefix.
  • nk — nullifier key as a 32‑byte (64‑hex) string, no 0x prefix.

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Response

  • ivk — the derived incoming viewing key in hexadecimal format

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Use case

The wallet/getincomingviewingkey method is used for:
  • Generating keys needed to scan for incoming shielded payments
  • Creating viewing keys that allow monitoring received transactions without spending authority
  • Supporting wallet implementations that need to detect incoming shielded transfers
  • Enabling privacy-preserving transaction monitoring

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curl example

Shell
curl --request POST \
  --url 'https://tron-mainnet.core.chainstack.com/95e61622bf6a8af293978377718e3b77/wallet/getincomingviewingkey' \
  --header 'Content-Type: application/json' \
  --data '{
    "ak": "03b2c3d4e5f67890123456789012345678901234567890123456789012345678",
    "nk": "04c3d4e5f6789012345678901234567890123456789012345678901234567890"
  }'
All keys must be exactly 64 hexadecimal characters without a 0x prefix. Otherwise the node returns an error like: “param length must be 32”.