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 0x48e5b4e1e08f8f463d297845f17219588da2bdbb7a4c2722cd1828aea38b8361. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d1dfdc7d-38f2-4b6f-98ac-4e7562ba9abc.json and https://artists.proofprofile.net/proofs/artist/d1dfdc7d-38f2-4b6f-98ac-4e7562ba9abc.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 0x44f8bb75978054335594c1a87f502cba3239f50acc448cfb2cf489e1d21fc010. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T16:05:27Z), 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/ES71G2005967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2fe6f693223b45cf0debfec404185fe080294f642f30343f9c077235ec8c987. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/ES71G1938809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29442329e47a1a1ea2ab4b572fe67838d564bd492b8abe48da51cfcd4c82d701. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T08:02:00Z), 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/ES71G2005969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f6d975deb885bf7df9c8107d1356a6c084052a1c825a4411d5654fde16ed497. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/ES71G2005972.
El día que me quieras (Banda Sonora Original de la serie Cromosoma 21)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22d388ff980ceb396ec68bd797cfa2d88794f8bd1102ccff2f18fe162fd96ae7. Chain 2 (Bitcoin): anchored in block 957663 (2026-07-12T05:58:46Z), 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/ES71G2234254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddeb867bea4501abf057b55bca47ef5002011fd85903e6e8a035cb9a36991879. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/ES71G2239921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73d0b79c2488c3d766539de69b72048fa17eb5542ddee607e2f35bb02bf7e29f. Chain 2 (Bitcoin): anchored in block 957668 (2026-07-12T06:54:37Z), 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/ES71G2239928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1b46889e7af677397837cf1d2de3d2ee8baeef5d2a8eae59e2b821678ba9f9e. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/ES71G2239926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2492111079e705bb622ec9000697597bfe4c6ad6fc2a953ee9934b41070492a0. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:08:53Z), 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/ES71G2239927.