Writing receipt

How this was written

Mostly typed

By P.T. · Sun, 17 May 2026 13:53:27 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 20:27:36 GMT.

Transaction: 0x4ad0f0d1c64097b3e5b9ae8a8ca53d30618aa2e17892ee15830035348cdf2e5f
Digest (keccak256): 0x3b988b1f32ca95f03df1689eb169f3e1b679c57bbe26433b65e0db66518c1a67
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)" 0x3b988b1f32ca95f03df1689eb169f3e1b679c57bbe26433b65e0db66518c1a67 \
  --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: 9ef10004-6beb-47ff-9460-7f7a66b0b070
Text SHA-256: 51b90dfc72bbe865c372353068c2d37230d76075d474c6cfa1e25c4410d32dc7
Signature: iLzijkX2recSmuX9XBe5MBiEIrAy/TbbHOo19AacFIIATzkq5tlcj7p+9W9WQ6C1ZhbKqnWQRS3lrgDeGGxGCQ==
Created: 2026-05-17T13:53:27.135Z

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