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 0x7286d8bb4f6f9194af91281df6196447680046aeb9ff1ab039797a18329f7904. 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/3b14931f-26fa-4ce3-b0f9-f08ef912053e.json and https://artists.proofprofile.net/proofs/artist/3b14931f-26fa-4ce3-b0f9-f08ef912053e.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 0xfb2ac1985a4d1674e83ea0676e02f390474d131355420a5f35e478f3f2608722. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/UK9961813322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x924e7b1aac004225d2040ffc5931b307c48741e3b844c822b149c862a032a290. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/UK9961815572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63c0cc298e38de98062888e8aa667d7703a83a039fc19bf930505b068f302092. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/UK9961815591.
Solfeggio Nature (Healing of the Forest)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9467915008e351a23e519636f3766cde68e93827e1200d2b75cfddffafaf3bc0. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/DEUD92384833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6807b2f4aba61129f67e08160131fbb588af1b1b41015cafd5f87e17b9da714f. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/DEUD92384834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc21d936bb7c4c53b1f087bd4afc8f2185826b3d7a2b90e34b64cfa37d265395e. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/DEUD92384835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f7bc5e1d556fb535ee7b39a8eb13853e1ed15bc3ee967e43156a65f0fc308d5. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/DEUD92384836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cb4574793cf900909b2cdaccad83405a50ba755ff5da49104dbf51d0214c7ae. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/DEUD92384837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d9b5bb7e3ffe3778fdfd77fa7eb9d2c1981808afddc8d7fbabe85c065351e2b. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T10:51:38Z), 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/DEUD92384841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b0497bd7e6cf1ff944bae042afd815b62db4b1859989aa8f543c530351b7ac9. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/DEUD92384842.
Nature Solfeggio (Green Healing Buddha Sounds)