RBL may refer to: RBL Bank, an Indian bank RBL cells, cells used in the study of allergy RBL Posse, a hip hop group from San Francisco, California RB Leipzig, a German football club Real-time Bl
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 0xe4461dd21a7a12dde44ce7c134bd83d51d8c383b8c71e67513c26d35b14d4358. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c3ea35b7-c364-4411-81af-c555c8a357fc.json and https://artists.proofprofile.net/proofs/artist/c3ea35b7-c364-4411-81af-c555c8a357fc.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).