right|thumb|Alvan Fisher, Pastoral Landscape, 1854 The pastoral genre of literature, art, or music depicts an idealised form of the shepherd's lifestyle – herding livestock around open areas of land
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 0x1b4d55ee9ed3166f54fd8418b3140ba7889fa51cb291cb765991ca3993f6653d. 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/2adb9e37-ff4c-42d7-8fa2-0a4da7be95f5.json and https://artists.proofprofile.net/proofs/artist/2adb9e37-ff4c-42d7-8fa2-0a4da7be95f5.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 0x97ae00bbd7d172141a0ecacc38255f182f2b9f8075dd9a12ab7d01e5ab20f8a4. 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/ARA232200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f2103537a22d6267ef2762a9ed5a3790368c9d7f7a25a735cff03e9df367a35. 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/ARA232200012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1191e404fe20fa176a15a9173cb372f540ba1d1d4135c0cf6d60836dc7d93c8a. 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/ARA232200013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ae153511f5006b2bf044c95138f90a05891f62363220696e885c5d4857035af. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/ARA232200014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c773a75e35f820f9d184bb5981c09b85764b464634c7726d0002e17f2dc3325. Chain 2 (Bitcoin): anchored in block 958825 (2026-07-20T07:35:56Z), 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/ARA232200017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1f9c629ec2f9e93a03db0445aca530293bf70961b89b25d0c368c35948a88e4. 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/ARF098200066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2950d2ba605686f6f327415298f7c22c1a0a4a2a73c779f4ba3d900bd61779cd. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/ARUM72000203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x470ef60dce3112fba72fb86b68b6a4a17eff2bf306678b1da5472f1428f9faf4. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/ARUM72000204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cdec29b1b3db5193a5b8fb54311ce95acd93d6e2101ee2434ec0d7b7d598124. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:26:47Z), 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/ARF098300042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabba8ed778d97e00dc6b5abc7c801185f54d9d8262a49b085e0262d475012b2f. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:51:18Z), 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/ES71G1612359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17cf02714ff9914bf12eafba5d47c3c38a0eafcea1d0017e32de6b69b2d87549. Chain 2 (Bitcoin): anchored in block 957539 (2026-07-11T08:09:42Z), 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/ARF098300037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1f9c629ec2f9e93a03db0445aca530293bf70961b89b25d0c368c35948a88e4. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/ARF098200066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x873fb1fbc219a61f87a5746ab5ec8e3a89f3350ee47d4cb4a2f04ad0612a9a18. Chain 2 (Bitcoin): anchored in block 958666 (2026-07-19T05:00:30Z), 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/ARF098200134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x839f479be89e7995995485c47a7f17120b6c487a6664a1bc3ed3d9758398978f. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/ARF098200135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cdec29b1b3db5193a5b8fb54311ce95acd93d6e2101ee2434ec0d7b7d598124. Chain 2 (Bitcoin): anchored in block 958658 (2026-07-19T04:09:09Z), 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/ARF098300042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe98613c6622c9e028c9f0b380d115bb852e5100bcf8a650fcfa559e6dfaf500f. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T18:01:47Z), 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/ARF098300033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29dfa924d1200224bd33badeffabf73be7cca74717924b6d271bc12b61683a59. 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/QZNJW2597601.