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 0x0ab4ad3eb07e227d64dff4e968d51f3fcdc7f56e70035198fb2ac0b292dcecc7. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/207e5ab2-a81e-42b7-a033-4c57875bcd00.json and https://artists.proofprofile.net/proofs/artist/207e5ab2-a81e-42b7-a033-4c57875bcd00.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 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 0x90f0ae6a6093facb4564ab4088af7ffece9a3b5eeb1e0bec8292acd969640557. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/GBLFP2068616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97c04196082852ccbf30bb5cb6e1d1e96d2e6fcd24e0abcd201ca4f2a24f08e4. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/DEKB71677101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9578fd60b651e0526c2963d49439c995c17ebaa39a4991116d0333d71e2958d2. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/DEKB71672599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c80bdd43da9275f6298830f5afa4b5972b98883eda7b3e357118c5657faadca. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T16:34:26Z), 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/DEKB71672601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7f075121c65e68318159e1b7955fcb92a0bdf7c2d0d3703a2e30ca15172ab48. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/DEKB71672607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xede5fa92cb33d1603581d500c618ea395fdef2b0af354e7013618869c0c5bb00. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/GX53U2351945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4142b05a76b61e56e2ca7ca155692464204655a76ad34579446d9a640723c643. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/GBMA22157261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9fad01a18bbb4dc127bc17882d314a0966bd9f7b74dd3aefad726128a545ea6. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/GBMA22112159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10198bafa1ab5d37eb69050b5149ece18964c692c3105ac5081304dfa043ede3. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/ZZOPM2104668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x104b0e211a04d1da9740e0bc24611960b081eecb8b1e255b54509608021b316b. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/UKXN21964552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90f0ae6a6093facb4564ab4088af7ffece9a3b5eeb1e0bec8292acd969640557. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/GBLFP2068616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x520105948ff9e59c5ec7a2ab00babaade179d6a4a94ff63f4ac9aad0e118bccc. Chain 2 (Bitcoin): anchored in block 959134 (2026-07-22T16:26:23Z), 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/QM4TX2099503.
La Cumbia de los Pajaritos (Bial Hclap Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9008dab9a7f038f9064d3b56add791a151cc55aae98ec2aeab906a0c7fb218af. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/GBWUL1918506.