1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x7f3aa39c8efb2bf85a962a0f389e5bf36f7c45d43bf94c95badabfa1aafa92c1. Chain 2 (Bitcoin): anchored in block 953773 (2026-06-15T10:40:45Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c605ceb9-35a9-4b5d-9329-649bc74884d8.json and https://artists.proofprofile.net/proofs/artist/c605ceb9-35a9-4b5d-9329-649bc74884d8.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 → block OTSBitcoinBlock must exist at that height 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 0xa5aaa3ca62b9f604bef828066e67eda396789c4074182d1185eefafc50cf43ea. 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/FIIIR2400032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19b8ad02766ecda127441115b6323c84f3b7d91ddc5e1582617aa75891797a66. 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/FIIIR2400034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c73cda8b3da1cb026bc1835254c67dce0bc07fd604c4d6718f8e5eb20592f99. 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/FIIIR2400035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa82daf09397b7d534cfcddd4bd282f7df87cd4c45db02268f98e5f47130b93d6. 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/FIIIR2400036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf6f500a2b2d25f99303af4a77c564b99d952c2c39c42789432a0ab3c7934955. 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/FIIIR2400038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x293eb0afa0856f1e625bd2825c60c43bf65a4b49de87e0a0474e4754030efbe6. 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/FIIIR2500011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x571b61b9d46e02663e54a8339f3470c5f69b90ed9642238a96cc92551e8ca7f0. 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/FIKJA1800002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf9663493d9778a1a6d3d8ffcaae7038d210a634f6657f77af2366966a648030. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/FIKJA1800009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4edcabfe6edebe6a731049246b8f99aa0795ff665436c2e6ad0b7730a5e49873. 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/FIKJA1800010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ac73270fcaa810c066f68303154c844635ced1f330378dc94a41d40e7cb84ad. 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/FIIIR2500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x484590b391fe6a288e8b992822a563e87c0dac9e88891491c9aabea78cd7b599. 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/FIIIR2500002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00a6dad4920f3cb2916ac609972f4f4427ffab772130be90395ec3e9639721b5. 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/FIIIR2500003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x599ad2d002f77b1a91176aee0d97bcfeeb1f5ec36ba731a06539df4565134991. 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/FIIIR2500004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaf85cfff4bc37f48b17193544ec511e6cc6769818257e002e299349281093f3. 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/FIIIR2500005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x853d782d22d2d7f3be531cb6d14856feaae2f09a7dccc4da9989d595647e93c3. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/FIIIR2500007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea56de142afab0994ba1075c170c195f30d76353c2156d145baca2a93fb766a1. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/FIIIR2500009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x293eb0afa0856f1e625bd2825c60c43bf65a4b49de87e0a0474e4754030efbe6. Chain 2 (Bitcoin): anchored in block 957032 (2026-07-07T11:43:09Z), 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/FIIIR2500011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ac73270fcaa810c066f68303154c844635ced1f330378dc94a41d40e7cb84ad. 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/FIIIR2500001.