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 0xa2d8b301094317c17eb939b79b2c81b2683b7bd67a9892b65087e7186c4f56ef. Chain 2 (Bitcoin): anchored in block 953704 (2026-06-14T22:58:38Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/77ec615a-af23-4822-b1fa-e53bd8d69a50.json and https://artists.proofprofile.net/proofs/artist/77ec615a-af23-4822-b1fa-e53bd8d69a50.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 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 0x8800fac9104be479b2084fba1dc1042b6b2adcf6ba5816590b3897feb148bbdc. 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/CUA020213793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72fccfdea28e9f41a7c8b63933c822a563cca7d430de330c0158caa94446df84. 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/CUA020213797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ba6767975942add2e2b6441f5c5cf2f1d63b14c6a9883db32e18634d291237a. Chain 2 (Bitcoin): anchored in block 956859 (2026-07-06T01:42:12Z), 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/CUA020213798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x989e14402770cac17b979142a2cc065c2d3dd113f678e2b0af7a6dbb0193fffb. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/ITAC21800007.
I Dance Cuban Salsa 2018 (Salsa y Timba Hits)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf51390680f1f0a4ebd82a56a65b6b69c18f6495be7866ee4708074d69fd4a03. 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/ITAC21700052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x565c864a7443edcf1506920ed01b417f692ab9d3969f543190c39acfdf911227. 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/ITAC21800085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7616d3a609bf44ffc8769e78df2b7783c5987bb52555876f826b8f9b47353ed. 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/ITAC21800011.
Sorry (Justin Bieber Cover) - Salsa Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf88704b4faae97a4f19bf8030b0fb72ad699d2b4a8791ee701d50a4fb1366cb. 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/ITAC21800088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2467bbab7f541dcce0640d8531f4e879e7bfa1451973c5c5d57cdf342b743ef0. 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/CUA020215943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1bb01d47a4dda65b1928d35e589fd2fbb59b0823a41d07f4eca9bf8d6893913. 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/CUA022114971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65b9748480116b7680b26966542a5c9d879b5d2c9a9551220838edb95d95a6f4. 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/ITDO81800470.
I Dance Cuban Salsa 2015, Vol.1 (Salsa y Timba Hits)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18b9797c2bc3e1d963f36d7c46ae90b5acf62c279a3d67dd753a7baadc9dd657. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T20:45:08Z), 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/ITAC21600001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd448eb368492c8a7d2089df113889845847469b8d5f89987f7e3183d273cb66. 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/ITAC21600008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c80bc96ad1c231775d8ba066b9e6575f2949ea8aef39ec8f33bad36592905c7. 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/TCAFH2003737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a88068515e23ded3cec00272bca4d53c6776a60104897748889791e5e40ec4f. 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/SE5BU2517521.
El Niño y la Verdad Presenta Voces de Hoy
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb844b696e916959b198f2a05e59830dcf52a48176d9da0f13d290dba73f73dc4. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/CUA012003901.
100 Años de la Sonora Matancera (1924-2024)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc1e718b96aa6954ad490dc3f51c176ffcf4e53686fc6d5c38f2012630ba2971. 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/FR9W12224764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcace7a68d65141c56d75559d7c97d59ac502bea9095b833c171124c6f3736d42. 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/FR9W12151021.