We, the Navigators, The Ancient Art of Landfinding in the Pacific is a 1972 book by the British-born New Zealand doctor David Lewis, which explains the principles of Micronesian and Polynesian navigat
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 0xed0fc42655a93642f9cc9653550a1c17ee63ee3de8cf7cb36d8d3f1ed85911c6. 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/b4c0d725-6b47-4429-b61c-c77bf44d57eb.json and https://artists.proofprofile.net/proofs/artist/b4c0d725-6b47-4429-b61c-c77bf44d57eb.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).