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 0xbb61197dac9def15675a3babb7aaf0ab7f129a268db14a671b66f01ec5a93b16. 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/971f319a-ce09-4570-baa2-202078bb2cb3.json and https://artists.proofprofile.net/proofs/artist/971f319a-ce09-4570-baa2-202078bb2cb3.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 0xf56145ae9399b457a9460c088879702ea05416685c5c7da40bcd62f9a703e881. 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/GBMA22096178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9feb09a5d2e8748bddf9b5da366ed1c5c3607d84110a25bd8cfc0a0954912d5e. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-21T08:22:54Z), 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/GBMA21873875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdea43ff4e29da4b4c3feabc6e915079dd594f4724f0f54f30ffdcead3689d9a9. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GBMA22096537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37e34abae3d6ebf78259b71749645193a8e4d8f11432d065a5af0203069d7ac2. 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/GBMA22096539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72e974b612339a3165e8109524bf10f5af6077ed29aff4167b04dcf9d7469fca. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZHN61941118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5be60ff7ef26aee3a72a34a4685fe000b74c028b5289d7cc3c6bb83f5622d877. 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/QZANL1769397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfe99c92397e9061786980fbc67ff5ba644413d7bc1974354ec3644f9b56b28c. 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/QZANL1769399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fca981c83c9214eb4cd150a607ab9788413c49e558c7535a37026ee3a6e79cd. 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/UST8K1789917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcbf4caed3ab1191807582cc0c12be6815f3d4c50be8117d867e55123b6a9f4c. 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/UST8K1716872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcec4d907aceb36ee18f9a6ca97c47e233ffdc5c1567d5cce71e4771960482d01. 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/QMDA62304803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x363bb498d4bc8ffd800295ceafb4628675805ceeb035f667612c460314357aae. 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/UK6821800818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd13cbe024a4464a44415b8ae3999d0257c5f15d1c5a510a728a3c5e8d2782c6c. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DEQ022003888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9feb09a5d2e8748bddf9b5da366ed1c5c3607d84110a25bd8cfc0a0954912d5e. 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/GBMA21873875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72e974b612339a3165e8109524bf10f5af6077ed29aff4167b04dcf9d7469fca. 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/QZHN61941118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7ed2fb8e30d07c371c6ab5d5929b678e4846b2e06de05d86ed5dadfc144d82d. 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/DEVF11800282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fca981c83c9214eb4cd150a607ab9788413c49e558c7535a37026ee3a6e79cd. 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/UST8K1789917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd31487ba5f5406c3cae5ec0f010a2936538053ac24444dea38a373111f101d99. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QMBZ92177524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcec4d907aceb36ee18f9a6ca97c47e233ffdc5c1567d5cce71e4771960482d01. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QMDA62304803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4de2d30ce8d61e51b08b1f4758b3b37be03f22c10feacaf17264e94021bd0c6. 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/NLM7H2100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4de2d30ce8d61e51b08b1f4758b3b37be03f22c10feacaf17264e94021bd0c6. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/NLM7H2100001.