Loss may refer to: Economic loss Grief, an emotional response to loss Animal loss, grief over the loss of an animal Mathematics, science, and technology Angular misalignment loss, power loss caused
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 0xe79a9f446fa2f730dd10dcec09aa389f0d4189917b99a84a93445ea20f995e0a. Chain 2 (Bitcoin): anchored in block 954631 (2026-06-21T02:46:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/cfd1a84b-8417-4575-b736-5c5970a6dcaf.json and https://artists.proofprofile.net/proofs/artist/cfd1a84b-8417-4575-b736-5c5970a6dcaf.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).