The Harmony River is a river in Algoma District in northeastern Ontario, Canada that empties into Harmony Bay, part of the larger Batchawana Bay, on Lake Superior at the community of Harmony Beach. Th
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 0xfee536c66899776a2739b7914de738ecfe08c3181ef2b28d3d3a6eeae448fcb4. Chain 2 (Bitcoin): anchored in block 954516 (2026-06-20T07:04:44Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a1eb3311-d63d-4d31-bb12-9f5b2cd3efcc.json and https://artists.proofprofile.net/proofs/artist/a1eb3311-d63d-4d31-bb12-9f5b2cd3efcc.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).