Sarah Simpson ( – December 27, 1739) was a widow executed by hanging for the murder of her newborn child in the Province of New Hampshire.Women who kill She was one of the first two people to be execu
1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5dca470d471e7f23c3cbbc7dc42e0e1062c088af4fb723fc0c3751e37d49fec. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3b83f434-23a4-4ea1-8e8c-9b946c2acda2.json and https://artists.proofprofile.net/proofs/artist/3b83f434-23a4-4ea1-8e8c-9b946c2acda2.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.