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 0x5a2334938ee08f835346d6f067d35edf70663a46a265f355c3ef6f57f4ee15d5. 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/200842dc-17d4-4680-9046-6e13a9a7d04d.json and https://artists.proofprofile.net/proofs/artist/200842dc-17d4-4680-9046-6e13a9a7d04d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Aranjuez La 92 (Doble ID) [La Ruta Del Perreo]
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 0xda6bb885207a227f5ff9c9a3e87d6aadd6ac462a872d7a709a589e133ada8cf1. Chain 2 (Bitcoin): anchored in block 957064 (2026-07-07T16:43:08Z), 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/US3Z42300317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc9da983fed5c45b0ba003aac9e4bef571a726ef505f825592c5e76524a2ad22. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/US3Z42300271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x330b5a6463160004f27bafe1372a116490efee0bfb855f05e1844428389e17df. 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/USLZJ2383241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37789c012eb03f4836925bca9c6bbf6a08164534f56b264bcf8625d6360e3062. 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/ES75E2300545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9c2c96368597b07205e7f26552278335c0ce2e6889f3f231dc13718138054ee. 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/COC012237679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d443f267825d493c7897717428a64a9c982b25ede2b1bb4edc9ead940882690. 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/COC012237344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0254b75590d10fb154b132befa816c7a783cba84b338479678bc5c8b721e2033. 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/COC012237301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1328def95ad85c93899a36b743aeac338270981fc7bf02bbafa6cd4a9dbee9e9. Chain 2 (Bitcoin): anchored in block 960225 (2026-07-30T08:04:30Z), 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/US3Z42400020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ce7c0651bb1aac865d9848a087890bb7e1e8f564493a34cfad69cc0160c681a. Chain 2 (Bitcoin): anchored in block 957039 (2026-07-07T12:58:18Z), 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/QZZ662409398.
Aranjuez La 92 (Doble ID) - La Ruta Del Perreo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0c9d9621b5d549c182e76a672344cc4b8c1ffb326f91592bda890b59841b6ee. 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/QZZ662356771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f3e077cd5d6c3e1597d1b9d256ae14e3c1a899de9e6dc5acce457d1080985bd. 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/COA6W2000967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a68175f453126a8a13f15cbb88f181a34d37f7301d30ef064e2935c2cab21c9. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/COC012337927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f967d501179af735ffe3d51cc444fd2e278c9f7e8d53a8c3198ae5e1e5aa122. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/COC012337760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8364eb8866597211e8c39d433376fd1af57bee1e359cd4b62ba2f9f6a361ef0. 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/COC012337762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1e12d4e922ce20101c18c59776400a83fe7bbcfa4750c8be2f0bdc4eb7c7095. 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/COC012337763.
Buenos Aires (Obvio) [La Ruta Del Perreo]
Buenos Aires (Obvio) - La Ruta Del Perreo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2beb6c9f28ce07fa8607c34d0bb3d3fe239d55a6e6da742a5f710f57d4405305. 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/QZZ662359950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda6bb885207a227f5ff9c9a3e87d6aadd6ac462a872d7a709a589e133ada8cf1. 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/US3Z42300317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc9da983fed5c45b0ba003aac9e4bef571a726ef505f825592c5e76524a2ad22. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/US3Z42300271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8288de6acc8c0927a1ed128080befd585bfaf5281d8fc9711e728b9909d04580. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/US3Z42400022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1328def95ad85c93899a36b743aeac338270981fc7bf02bbafa6cd4a9dbee9e9. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/US3Z42400020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3d38cf68675ba5359afb34c24a17bf42f4d1760670e4c9dc949cf4b1bbbb58a. 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/QZN882531271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ac188b392b76b190921f2b0ca76af2c97b6e40436f9f63228509d57c54ed28c. 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/USWL12403325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0fd2bc20e469cd7c1bf3f767837f07d747f812968e4b6d1c5efe3e98f62bfa6. 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/QZN882540978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef727c142eb5d7e8973abb9021c475ca1ad723741978fe33c8cdeab98317120f. 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/QZN882509450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f2383e2e36f3e57d53dec1d83b00fb53e59b7288117b5999198bdab4eedd248. 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/QZN882508298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd97ee467573b13ae8aed7ae747f10ac8daf238cd67e517968f4dfdbee553e977. 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/QZN882405439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c23de71a760d39ffb733fbde2db0f14a87a23220baa1f36d687a7d59cd38bb5. 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/QZNMW2460743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x485c2b25db3ec95565268a53d5e7f62fa25aeabab46f239d98095d17b0662256. 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/QZWDW2468238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f115d9205c5bf7ce30374aa2a805b323d30d39ac2078e6dded2853c4ae9eec1. 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/QZWDW2413000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a3a8da81c287e8f5561424a7b52dc0aaa977ebc76123e647431738a01f80546. Chain 2 (Bitcoin): anchored in block 959103 (2026-07-22T05:56:21Z), 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/QZZ662445587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x338ac701092529772d0568792b08172f29efdb85ae5e1ac037ad81b26bd65d8f. 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/USWL12500368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ac188b392b76b190921f2b0ca76af2c97b6e40436f9f63228509d57c54ed28c. 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/USWL12403325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x544ad8760e026416c5f32edb8b8a006b19c8d967f1fbb041b1c6501bac7aacb6. 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/COA6W2001247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1892f3f29b7ec22d6c12b53e3036e4688447d19ec12e0e3e4dce977a26da927b. 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/COA6W2001026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6319a4784266e5e78fb8ed41a758a538aa2eb68e599b6f4445d2ab97440c0f19. 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/QZN882442806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2beb6c9f28ce07fa8607c34d0bb3d3fe239d55a6e6da742a5f710f57d4405305. 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/QZZ662359950.