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 0x70e2996d01a67f8a35c15461dc6a683db6af50893b908fc4069aa2520fae4143. 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/347013cc-b97b-4fc9-b40b-861c082cb8ec.json and https://artists.proofprofile.net/proofs/artist/347013cc-b97b-4fc9-b40b-861c082cb8ec.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 0x827dc5bdd1019e8820e41347ad1610408479ef29559b363d0378a2b0fb633d19. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T16:32:38Z), 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/QZK6M2264189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26c36835eaecff36426c4fbe996be0ac824258d6f7b1f9a9ad29ebc19464eff3. Chain 2 (Bitcoin): anchored in block 958720 (2026-07-19T10:53:46Z), 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/QZK6J2390223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe68f77b7bd6b302830c11073157cbc72c5cd2f6f822ea002724c2642422f0a3a. 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/QZNWR2370519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9792a504454e19cf85adcc3005c771905e8753ec33ec68dd3d9250fe9bcbd053. Chain 2 (Bitcoin): anchored in block 958825 (2026-07-20T07:31:16Z), 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/QZWFG2398427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf972421a4f126ea6b16b11eba9a34e68512bec7883dafa990e80601d2cdef9bc. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/QZHN42433771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab36051d9800827bad9e524ee6d9d9aa280ff3dba7a1152f547fbd9835d555af. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/QZK6N2414018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee331cc0652e768e96f091fe698e899973a4478a695f1cf9cffd38ecc447d50d. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZHNC2411180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x273bb8aeee5ef05bfa72671da0308a2f131c50efdaafbbc6948da9cdcd36bb21. Chain 2 (Bitcoin): anchored in block 958736 (2026-07-19T15:59:59Z), 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/QZPLR2494651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50cfb6461166a3b889a4d99ef4ef25eb5c2f4890b839994c191c5b09a39c41d7. 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/QZG2X2400253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b703d1b41b91357eb4857e295981603ceea180fcc43c06a3c2d101fe6d806e8. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T14:14:21Z), 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/QZTB82458621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a4e0a511d99bd5e664a84028fcaa11c778dc800b39c9deeed51512973f163c7. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/QZTB82458622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc18a811ba7dc2c334b2302c3a849c559153734d95d46bac0540151b77830a1b. 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/QZTB82458623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe26f8f7ae3c90d74c287c895daca048e02b7bfab2bde7bf1f3894ba06d461e48. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T17:30:54Z), 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/QZTB82458624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c33f477c629d1e97f7e5ce7aa9c7e37476582c616d303fbfe8e5e3d5e5463e1. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/QZTB82458625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x170ad9b6a1512fe23b4dfea43f73192772be16ad0a2a13d7d930c9891fe3cfaa. 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/QZTB82458626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e17aaefb578568fae465137ca6cf3ed69d9148447d2b53d765f5a83ca356ad0. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QZTB82458633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cf1789b3658feac4c230a8ab1fd4728df1315bf5ea4799fc5b7e884369a13c6. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZWFM2464220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d8673b75c9eae601daa957af7592a9684dec897a46f922c2174be7aa0772482. 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/QZWFM2452584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x545163155ddd5198338614850442623ecde58f3afe74ed97bce8a7d90c26f804. 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/CA5KR2448951.