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 0x4aca683f36dc18a0f9b7df0de4d71df63af2a1c045f7412a6f69942237eeb047. 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/9875ed4b-64cc-43fd-8751-002cacbf2afd.json and https://artists.proofprofile.net/proofs/artist/9875ed4b-64cc-43fd-8751-002cacbf2afd.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 0xe61b6bd3143e33a044afb4364177438e48fe0ea83d7bebbdeed2210c99e9b963. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T06:12:52Z), 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/UK8E21400204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e6083643b88c81ec736dd794bc35d16e604c094d4ab1821d1fe60e07e6df551. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/UK8E21500402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e6083643b88c81ec736dd794bc35d16e604c094d4ab1821d1fe60e07e6df551. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/UK8E21500402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd965f49f574328d4d9c97e90026d3533a130745e4b094050de91e353423e09f7. 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/UK8E21500403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd965f49f574328d4d9c97e90026d3533a130745e4b094050de91e353423e09f7. 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/UK8E21500403.
4AM (feat. ILoveMakonnen) [Moguai Remix]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbe1def4ea56eccbfcf9e20a75c6515b2834e77d3c551be22100dc4039556f41. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/UK8E21701101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd2a79e68ffffca8c7b5ecff431fd190db84ae301678ed2839f2695d29df8f30. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/UK8E21600301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc97d7f132fbd5042a109b1e2d64ec2c2f898b0bdff0a491f865d96685844a8c6. 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/UK8E21600207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21092debf76b06c47448db3486cca61b0f21d69c6c6a03e041c98f03fb673cd9. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/UK8E21600601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd2a79e68ffffca8c7b5ecff431fd190db84ae301678ed2839f2695d29df8f30. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/UK8E21600301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa3863a87668e8bcf4acc2a6dad495bb9cfecc021cfe1e06ac7319c0e3fa66fa. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/UK8E21701001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa61d04a3d3f0882f13faf5f615d209a20c9c503b49ae5487f7eb69fa8392d74e. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/UK8E21800201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c771c11ba58f8562f1b7e48886de8bdc74d90be4422422ce16f89b237b0c21a. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/UK8E21600201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa61d04a3d3f0882f13faf5f615d209a20c9c503b49ae5487f7eb69fa8392d74e. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/UK8E21800201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c771c11ba58f8562f1b7e48886de8bdc74d90be4422422ce16f89b237b0c21a. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/UK8E21600201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1efba54650e887677d63057f40d621c06c3ce07fcf308c57e5dc79e78426a6c. 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/USUS11900027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83861414b18ea3d0c4acfbb169a80703b642fef579205d04235fd3771eeed3f5. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/GBKPL1666504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35ca0cab1f0266c634fbd01f051dd719802a7759e4ae146492719e77f528e01e. 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/NLF711904952.