Writing receipt

How this was written

Mostly typed

By P.T. · Thu, 07 May 2026 13:17:19 GMT

Signature did not verify. Treat this receipt as untrusted.

Text

This receipt covers text written in the byhuman editor. The text itself is not stored. Only its SHA-256 hash is stored.

Observed writing process

Typed: 100%
Pasted: 0%
Paste events: 0
Duration: 4s

The verdict reflects the provenance of the text that survived to approval. ByHuman records observed input behavior in the editor. It does not prove real-world authorship.

On-chain anchor

Anchored

A digest of this receipt was anchored on Arbitrum Sepolia at Tue, 19 May 2026 20:27:23 GMT.

Transaction: 0x9a95222022c72f6a6b1a14601d558a130f7acf7e3519bd0712d7241c9facad3a
Digest (keccak256): 0xba9e9d89a5b10c84e1ff2a2c659df9805eda5821d6c9cb1eaa3aa105f46e998d
Contract: 0xaaef72f5e32a238a2c91d04ab72bb7f1a2c22cd6

Verify independently (no byhuman.ink required)

Anyone holding the receipt JSON can confirm this digest is on chain without trusting byhuman.ink.

Compute the digest from the receipt: keccak256(canonicalize(receipt)). It should match the digest shown above.

Read the on-chain timestamp from the contract:

cast call 0xaaef72f5e32a238a2c91d04ab72bb7f1a2c22cd6 \
  "anchoredAt(bytes32)(uint256)" 0xba9e9d89a5b10c84e1ff2a2c659df9805eda5821d6c9cb1eaa3aa105f46e998d \
  --rpc-url https://sepolia-rollup.arbitrum.io/rpc

A non-zero unix timestamp proves the receipt existed on Arbitrum Sepolia by that block.

canonicalize uses RFC 8785 JSON canonicalization. The contract address and network details above are the inputs needed for the independent on-chain check.

Receipt

Post ID: bfd8afbb-76eb-489e-8095-7b58c45a4e6a
Text SHA-256: a7877a970f44a733e53af458a618824987373f0a48d0ef36539d7f6d0c6a504e
Signature: E2YjvTb0NRI6y3/ja7LpcwdhT46fdCdpG2O3Oh5r5AIzFHDgQaRtGSJPuO+TjfVuuVQg+bpZyoHG46nbEXs1Dw==
Created: 2026-05-07T13:17:19.339Z

Verify this independently on the verify page against the published public key.