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 0xeaa7f1fd9a2da003cc85c70c43d50622d0c20f7f8bc0a7f4da328c80d93b5e2b. 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/bc566007-389d-4882-865c-5738f0b0975d.json and https://artists.proofprofile.net/proofs/artist/bc566007-389d-4882-865c-5738f0b0975d.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 0x9c4b0f27ec888542f7c8e7fd6d9e0829e63b8c8a736386bbde618028ad73caac. 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/US23A1544010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81cc803ba21908033391d85a5dbbd7e155656f86e96a212b9fd3da8da4812e49. 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/ZAG8M2200968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d8b0ede5f98cfccd8e7cddb79b7445a96bb033ce8045ec26169a3aa50cfb185. 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/DEY472476919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31de00e8e823246ff87380d0722c389c3e2d244b0e0f9c381d97d31c96895266. 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/DEY472478500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6c8683135bd3b69a91629eed22a5aaed17706dcce6a84e22db82ee902a55361. 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/DEY472478407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d8b0ede5f98cfccd8e7cddb79b7445a96bb033ce8045ec26169a3aa50cfb185. 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/DEY472476919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0558ebba2569ec0150a5164a2edb83765c50e696cd92e9be043921f52d54da6d. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T11:41:42Z), 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/DEY472478502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46881e765f94244ff14631f114267c0357e05ed77c3a24a1a5a2bb0179c0db96. Chain 2 (Bitcoin): anchored in block 958689 (2026-07-19T07:11:11Z), 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/DEY472478505.
Aluku Records presents Southern African Scores
Heaven's Gate - Original Cinematic Score
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b1450cb57e7506c6173630f4271f830303d389a3d307dba84c8c2169b4f73b7. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T12:16:18Z), 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/GBKQU2549316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x650222682235bc706611a4a23a333d57b8c3c72f9862ce63decf816396c8f336. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/GBKQU2549317.
Lemon & Herb presents Miči: The Sound Of Light
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x796cfa67c5ce8a72b1473c14295e7aad941ce05446003398d065ff7b06dcc021. 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/ZA1NG2100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79524009188efa2872cbbc17a290002436db5ebe6c4142a7d5bb9e9182bdf90d. 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/ZA1NG2100003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9aee470ce7d7a513845db0d5996899c499f15c2fe162a59f934d463af4ebdbec. 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/ZA1NG2100004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2425172dfb79f6160e0a495cdbcaec9aa2e8f406b2a0d0756fb7136fd3bc6a63. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T20:45:24Z), 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/ZAG8M2401136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4e6f426638e3b593b5a5634382278e54359392233f89111eecbdbfdf8b60c00. 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/US23A1586862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x992ed9e7be6bc6b5df04d53e5de820fc5dd53230801523f2ac273979fb439513. 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/ZA2EH2400012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x192e1b048db95d973df0bd61f10a3b34804eb7e33e6f9dc548be6956f74c0b18. 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/ZAEI72400180.