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 0xd92ef9ebb69b84178c18844dc8cc340042b39bbdcd5bb4bfe6d36dcbf28522a8. Chain 2 (Bitcoin): anchored in block 953827 (2026-06-15T19:59:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/eff99f26-c0de-4b50-8da2-48312b8dd8f0.json and https://artists.proofprofile.net/proofs/artist/eff99f26-c0de-4b50-8da2-48312b8dd8f0.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 0xf6818486e1244a0d2cd9be05f6e3c59483f4178981e59abc2219110238b536d6. 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/BXDIP1800006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7e0e7aa16546a2a6b01630d1f01c002fcd95fe90d14159c4b82096e85c33299. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/BXDIP1800008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c7530c5abcc8c942d7c626b4617e8c6dbb28c0cbaec8b5a8b6eadd4aac90fa3. Chain 2 (Bitcoin): anchored in block 960193 (2026-07-30T02:05:19Z), 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/BXDIP1800003.
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 0xcd4d6f44abab7ed63d7b3ecac0b58b3bbe646d7e2ba6509683936f5de16d7401. Chain 2 (Bitcoin): anchored in block 960193 (2026-07-30T02:05:19Z), 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/BXDIP1800009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcc8b706d2d8fd0a7463b68ed5fbded8e0237172c249ffb1df38f26e27c4a7b1. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/BXDIP1800007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf595ced01ab5df11113f39e9bc4856f7c42edeec3267905aa73c52cb16f286ae. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/BXDIP1800005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99515796047dcbea985c43539c8add475c4d0c1d8f80b9257eb9507bb1e5425d. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/BXDIP1800004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21e4cfc4a8b6b85b6197c6f1a7841acae264ff94f671dd5f4e742be71c51a3af. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/BXDIP2400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e02bb3389aa14fe5704a3435c614703c55d434713009073107e48e8e953231a. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/BXLET2200015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85119098b70d2f80138e185c4002b39e68e6abd3b1033041f20b25594d8b9926. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/BXLET2200016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f6ffb739df8e0e6f8a6aacda6c09678487d3c88630bd44cde0531d94529db3f. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/BXLET2200017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84562317fe9828a8f21b495ea5e881d3584ecf83c349ebdf3b556a7fd334325d. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/BXLET2200021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46d14bddf78d828e64f84d75986ec967633ed64a29925f195df90f125f3689e6. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/BXLET2200018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d6877d48a616ad3ef387533afb7dd1f0ed1d81d3a308277fe0c147d74ac6320. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/BXLET2200019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab5f546f37d4c9223270231daefe54bdf2dbc0da286d6f2f6f3c7518d047883f. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/BXLET2200020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf54fa58721a5b739ccb511c4bbc252e7e67f42769c4f50aeef2fcde307c068b. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/BCQAB2200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa184c430e28c74cf5bff6423b8372df442b88471c2aff3a686352c94a836b22. 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/BXDIP2100001.
Só um Jogo Riddim - Gregory Isaacs Tribute
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bf49b51567486ceafb8f64dbb9b426e6b48c8d892419d3ac7b6046791a99333. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZNJX2337421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58c5b441ce3169bd78c21c0802ba186d48d4fa5d705b00e7b3384973522a948f. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZNJX2337422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe662272472e833375e4f9defc557674b32c6e8afcb84e682f652ef8ae0b4d493. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/QZNJX2337423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a167f8ff54abc3866848459112ed08ba63df73663c6007747db3c178eaaf89c. 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/BRTRB2073601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff9fdd28cf8ccdac07c29044950d1cfafd9e5c3957cccceb71a22b931e59deb9. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/BRTRB2073604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x621671804c8fa8b71c2b72910830e0ea38e620f343ce73d9ce127514e21a76d1. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/BRTRB2073602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b58adfd70f975bc9d92ec9bc517c78f6a619f75c6d03b19006a574d2032af15. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/BRTRB2073603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c7bd868c63860134d7e62e21454bf17e4b7f7d353980947e4f306f6b6c4812b. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/BR4PS2300001.