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 0x19f6b323b6e3a43985222011790887fb541b2e83d37e441f5ab38f0eb9f9e510. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7ff4fbec-18a6-40a3-8d13-66fab2ae5ac2.json and https://artists.proofprofile.net/proofs/artist/7ff4fbec-18a6-40a3-8d13-66fab2ae5ac2.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Les plus belles musiques de Corse (Solenzara)
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 0x1dbc347bbddf8e6f5e3ab13c52380f77caa72700d55d43f07db817dd4d5786dc. 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/FR6V80079638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x899532cbcf20e79d79dc11592a75b85decd184f71db39cd6c85c98c415f1f00b. 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/FR6V80079644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2d173759b8e0eb0d8a75b3f83294d9d2464e7dacef1df275fab8686e59b57ee. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T21:20:45Z), 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/FR6V80079655.
Les plus belles musiques de Corse (Canzone di Corsica)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08e798f46cadb87fd010095ee1589ec063232c31299dad6257129f23271ec84f. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/FR6V80079685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49e771387f1bbc948012bbb3b8e67f6a8ff1620caf0b1006802d3eece0ebcd1e. Chain 2 (Bitcoin): anchored in block 956861 (2026-07-06T01:57:57Z), 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/FR6V80079689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5bc9a2dc5d8c45f66a886e03af294802c09d3755e2d6ea8b83f2157bd054d1b. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:48:12Z), 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/FR6V80079690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79b09d921f168fc8ec889f1a34d2be9a84b924b9a5470fea52b0dae949fb8525. Chain 2 (Bitcoin): anchored in block 958992 (2026-07-21T12:50:33Z), 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/FR6V80079692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cd8ab8045eb595f46da86bb493df3ab8067a7adc9f1b7b8e0be0fb8908e2531. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T03:00:53Z), 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/FR6V80079695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x226eddadc477a33b65316def8ea0372e04038c3f5170f02544db5916b710af21. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/FR6V80079699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdec732aafc2592d65e5281ed29088febd4319a1e73e76a1df8f353b9e4cd9595. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T20:12:32Z), 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/FR6V80079701.