Writing receipt

How this was written

Mixed

By P.T. · Mon, 11 May 2026 19:14:42 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: 78%
Pasted: 22%
Paste events: 1
Duration: 28s

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 20:27:29 GMT.

Transaction: 0x5e1481dc0ea385704a54254a118f623d8b02c535b4b2a4d84072677c7695fe56
Digest (keccak256): 0x58c53b38ebd6472906ae4f3fc8ff23876d5e1c513a3d1d9aa914a3d3143a713e
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)" 0x58c53b38ebd6472906ae4f3fc8ff23876d5e1c513a3d1d9aa914a3d3143a713e \
  --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: 89d2aa21-9d19-489d-a166-d7e560980487
Text SHA-256: 303467e8271fe875f7335313e2f81b59693d62e5f1e005562a10cd0cc8db0a14
Signature: fVZOP008PLQSN92jA6VyKZR4z528NqaoT/Ri5WFE6y3iMpjSMH6BEAfZ2+AWKN2o0SrFHyntdaXdnZAYC6SmDQ==
Created: 2026-05-11T19:14:42.094Z

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