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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bb3c93bd65dbee82cd1e533745b84421fc8152cb7ed44ee814a2d5f5da07332. Chain 2 (Bitcoin): anchored in block 953730 (2026-06-15T02:47:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/94f5afce-d0f4-4bc2-9058-33cc290ce089.json and https://artists.proofprofile.net/proofs/artist/94f5afce-d0f4-4bc2-9058-33cc290ce089.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Möge die Straße uns zusammenführen (Instrumental)
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 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. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb77fb83116da2fa8318bdbcee0d32349ea937931ccd5c9e21c0430f0eb08593. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T09:38:14Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEZ231413701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb3174147609c073e11b8156aad946453f591f2647020537ea321d481bbc41a7. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T05:03:40Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEZ231413702.
Mögen sich die Wege (Irischer Reisesegen)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06b3167bab0aeebb0a5c002fec7a3b55522c417da759cb40e102fcea57033e09. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEZ231514101.