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 0x4fab1ac66d9e36f5f0a46f0ca1088469617182a04a6f6238f37f0c6090417521. 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/b81a4839-e9d9-4e27-beec-25e6a957a00d.json and https://artists.proofprofile.net/proofs/artist/b81a4839-e9d9-4e27-beec-25e6a957a00d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
I Like It (Homage to Cardi B, Bad Bunny, and J Balvin)
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 0x7503288a20d117a457abd7ab8a8b19b37c5d236a75a8f6798515ee1c425e67d2. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/GZFML1804023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a60335166273ffdaef3b7a83fe9fcecb8353a4c3f75df8db338015dabd1e4d5. 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/GZFML1804024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbb53703adcc3bd82eee1e31eb8622d47632cfd51c34f622f8472a59bbe85e61. 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/GZFML1804146.
1 Hour of Tibetan Bowls Singing in Nature
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb647e81ea7f6cc08cf5494f1c3d5978ef5ad5e0cdf9970ea5f950b046e6aebb1. 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/GZFML1904232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x975960b04ddbc31c90af328560911e4f8e26f1bad3eaedc50b9bab7f1185f164. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T11:04:55Z), 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/GZFML1904234.
Ambient Relaxing Music to Eliminate Anxiety
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbaa0905c4d9366f2dd30bfd7efb8107f00dd69bae1100581d7749fc8b5635cd4. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-21T16:50:36Z), 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/QZFML2131061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c86dc66e0ef2871af7d45c978e0416f4d3eff62b5183f28ced4ca319c3697ab. 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/QZFML2131062.