Writing receipt

How this was written

Mostly typed

By P.T. · Thu, 30 Apr 2026 11:26:33 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 20:27:09 GMT.

Transaction: 0x1b06236c466320fdc523aa6a24eb74d77018589ddcba6945d1f2c2db69459196
Digest (keccak256): 0x94bf375a0460b73f7b36a29f224ec04c9672a915ef3349591dbd97f8252b3e03
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)" 0x94bf375a0460b73f7b36a29f224ec04c9672a915ef3349591dbd97f8252b3e03 \
  --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: 6c0e18ea-b778-4475-938f-8b7721dc69fd
Text SHA-256: 4cf6829aa93728e8f3c97df913fb1bfa95fe5810e2933a05943f8312a98d9cf2
Signature: /KwSLzvhPqSyyamTgM5rOomD9ndge/jYkn6Mlp1JQn3WCtyHW5MTRy7xpYuLpmZjBEXmXXrjL59YkcoAU+VeCA==
Created: 2026-04-30T11:26:33.750Z

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