Writing receipt

How this was written

Mostly typed

By P.T. · Mon, 11 May 2026 19:22:10 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: 31s

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 20:27:32 GMT.

Transaction: 0x4c2289c656a13c6e9d70c55fb6e5d6faa5a7a3b640e0923da009f47a81728b96
Digest (keccak256): 0xecce51e57b9b8f5a417871383183d060cdc0bdbfa5251eb47e1fab7d3f4bd16a
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)" 0xecce51e57b9b8f5a417871383183d060cdc0bdbfa5251eb47e1fab7d3f4bd16a \
  --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: 701acb87-3232-4a3a-a342-33268b63554a
Text SHA-256: 4c3900216b487addb726890c000fc9c4be51dd297457a573c1f1a9654d79a7c4
Signature: +nJZzUXLZ+v9XOSjF9QmoDqIImf+Lm0KnYMyD0zCOgoZwLTeAWHMbIP8umO2GmHifIBPz3LzcAQm9/U5kXxyAw==
Created: 2026-05-11T19:22:10.454Z

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