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 0xe14955e0033118c5d15ff3d4353e656dafe6a23e97712209b85fc252b08c54c8. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d3f5cde8-21ed-43d0-b3d4-b9957b38ce81.json and https://artists.proofprofile.net/proofs/artist/d3f5cde8-21ed-43d0-b3d4-b9957b38ce81.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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 0x977f7fb545036f78409c17bce8b7758153c04455a24db3aa76bcd7e8e493a8be. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T11:02:07Z), 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/GX4R52470368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50be4e21c4022de14b7360ff8fb98862b825e02d687dd7ebe63fe8b4f0e5098e. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:48:22Z), 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/GX4R52407643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9190fd0dc020bd6e9d09d6d1b442f5e7bc8c977ef59eecfc04d2d0ad7f7fc5f. Chain 2 (Bitcoin): anchored in block 956425 (2026-07-17T08:43:15Z), 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/GX5MX2433468.
If You Think You Know How to Love Me (House)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedb37007b852b44c21817d42dceede3ae0722b2b2195b58980387be049ec9d35. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/GXBDS2513613.