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 0xb3c09db633cdc12722fb94a3faf4dc9370e56120eb95bf47867d674fe002b639. Chain 2 (Bitcoin): anchored in block 953997 (2026-06-16T20:07:57Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/269d8e26-56c1-4fd9-b469-8f65590e491a.json and https://artists.proofprofile.net/proofs/artist/269d8e26-56c1-4fd9-b469-8f65590e491a.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 0xe330de1c075ddb0f8c4ceb8ced782a307eddb1f80abf7c834f8f8f7f05cab5e1. 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/USHM22286358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ec49bd89d7e632705256c797e523ceb0d3b6952aca2c40060cea2f4318367a2. 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/USHM22286359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70c6ae48c4cfe0862ec72b39cfa9bbbb018f79264d5aa962ecf544cd5bd43ae9. 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/TCADJ1792440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cbf066b813d8150e475a593b3cdc405e8950b34eeae9dadc1eaee5744a7659b. 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/TCADJ1792446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c0e0ffdeb83a3ef8b7e084230a96b020e2541f69e2a569499ccaa7220285348. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/TCADJ1792448.
Tan Linda (Remix) [feat. Indiomar, Jay Kalyl & Omy Alka]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3b1405abd15c3641741841341baec87fb128929a8b44e69afd4813253014137. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/TCADJ1792899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d3d5fa98ddf8c701c06b6d0aad191663c0d882f9ebf7ef38a69abbf3edae22d. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T15:06:43Z), 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/TCAEJ1908201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb1ce4759fd39f8a893eccf45875c1bb2bc20b91747aa7b6508a26e5af1d27a3. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/TCAEJ1908222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa76002f65a7198175f88eddbbee3d3cf32a78d9b9cc6bda99cc2732df9b89d5b. 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/TCAEJ1908380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ea8b5c6765db77bacd070ec10359fd282feae1d7d533f58c39c347e73d6e7c5. 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/TCAEJ1908500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x139a8034950d5bac1c5614f2a5191e4305f8b8d025b90a862d8da096a69e25d6. 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/TCAEJ1908506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c54b3c2c76956f8ac598303919649907ceb1572d076e41bdcc3b2f17c72ee82. 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/TCAEJ1908525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5fc124424b17cb312b9686f276599c7a069b48df442e363884af11d415b4cb4. 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/TCAFN2123518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9640e718c9aff08ac8c86325163549595c1fb48c57726ba4396836314fb01998. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/TCAFN2123524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ec8950ac7f6948f51726c734b95daecc41e617cdfa9394dd6903508d426e811. 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/TCAFN2123584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x497fe3663a42cd5347e936893026f78ed60242675e7dddcd4426a968d3419b32. 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/TCAEP1902769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61c89f08c2f51a151e0ae82d5971c85c443a2e808037b56af7e405d4056a4c3b. 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/QZES72326917.