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 0xaeec013f8226b3b7a0bdb2ba36aa303ffc1567bc6cf5233f2ed9d4f2ce8e388d. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/87fdef5f-1f68-482c-b91c-6b543c92c01d.json and https://artists.proofprofile.net/proofs/artist/87fdef5f-1f68-482c-b91c-6b543c92c01d.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 0x0a2ab0743e29071f004868ab2bc2c9e1a151394b76abc6bdc8c964ed5a520f3b. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:49:52Z), 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/QM7282017644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38e408ee1a2de438a881121cb7c5984ea8589b0dde7683fdb8778eb1cdc08c95. Chain 2 (Bitcoin): anchored in block 958368 (2026-07-17T05:03:25Z), 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/QM6P42099331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfef7fc7f79f3a103e73d86aa5bb6daaaf5635fe5824b4f5ec20be7c53bd9817f. 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/QMFME2035113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e8b9bdc5f1887f5f787f53f66fb9c9e4889f32edd81665ef7c27218d3b4745a. 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/QMFME2035167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e71cad48550802735cd9428a8a19746569ea22bce92270a480ecdc23d6db443. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QMFME2035193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeffc770afc8d19704ab279329831a6751d2f364f79d6002488203f2d6f9c3f35. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QMFME2035212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b9fb931c2cdc268bf756963c8dae47c4a6b14a31af9ed223ca9e3bbfd67daf4. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/QMFME2035214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x349d9cf1322324d250036c9abd8420d360529cb29092d6439251d2c8e9ec8fec. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T17:22:17Z), 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/QMFME2035074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x417efdc923cb6eaf53f8dfcee5d59740295b7bd59801379c5936db0fbda6bd44. Chain 2 (Bitcoin): anchored in block 960191 (2026-07-30T01:51:26Z), 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/QMFME2034996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa989c667d082253a3c8cb7016a612a8c91a235daad597e75ec8b9c1c531ff7c. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/QMFME2035069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67259cecc58bdb333673ddeb6551eb3c7145d65a7f8a022c15c2e71f5309ad93. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/QMFME2035147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4416bc989ff811686d585e585136b7edeaf9a00b99da78ecf1c03a499c45edd6. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QM4TX2285261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14a3290167617fce23b22d25d2628ef2db39ceb0b460beae8c8de1dbf20f3432. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/QM4TX2285265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c548e61ca10f8c91f7974995085aca8ead200878aec51071437b029dd5e018c. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/QM4TX2285269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c21f680aef08f2a5319745856323b9bb61702df9adfc5906bdcfb561eff1bab. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/QM4TX2285272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8971f98a3572a1811e8df54dbb5999b2e377acade7cebb043a1dc174b7c53cd. Chain 2 (Bitcoin): anchored in block 958825 (2026-07-20T07:41:30Z), 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/QM7282425758.
Algo Está Cambiando - Earth Remix (feat. NATURE)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50115738b1f63eaa6ca1318c5e5b3ed42a8d9e368dd3ae6393c905acdd2ccc20. 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/ARC572402679.
Los Niños Perdidos (Banda Sonora del Documental de Netflix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1af3a782557a394d70d5c71d4f0fc64cb2de550545a54e3f02d26c8ef4c29145. 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/QZ8BZ2411370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb37b344c0c845decd1c07cf75969f834150666b407c84510e1293698ac05ae67. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/QZ5AB2166383.