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 0xd6c2bd66a9dc15ec1a40f9f0d8984d5abc5d391d3a8ece74037cf11d17431d35. 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/35eb634f-6161-4c34-83ab-15dd2462d79a.json and https://artists.proofprofile.net/proofs/artist/35eb634f-6161-4c34-83ab-15dd2462d79a.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 0x8548076b769bd42145f12031328aa08a5d87ee9b9811c6f2a944f1a7b1f359e7. 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/QZ7R41850416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7f2bd6a693f7c8867abdae198780ad28ce81a6c26e5ef002657ffe9df9e8527. 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/QZ7R41850418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59615cef0957325bca77e4e43370583281b10b8563a7fb1f0ab158f982f4af63. 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/QZ7R41850419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fa44ad78be224fc8308916757608cc391ffd2862b09a020a05a68bde7020f7a. 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/QZ7R41850427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf08d91d972d50139a36b1f53d09977332c6efd93643bb3b1e17ceaf91a1c8c66. 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/QMHUY1557205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73eba8dcf217c10116bd59db6066b0536e225c99811db13fa58b816a05fdf9aa. 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/QMHUY1557206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12e53ef8c904a543a1bd86a28ff642db65880b48186ea507bc8769af8780ebb6. 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/QMHUY1557211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff4886a0f51fc6db2163a9cd9e03be19869ed5d4c9f3753da5f47780872aa620. 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/QMHUY1455448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09064196aaed0f5be903a18b2695633a40948eb460a7c02a9683b2a7fc01f670. 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/QMHUY1455461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d365ec3d17346e4ae719318d58411bd2d61646c5f3a4793b223c0583518b9c4. 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/ES71G1911709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23c61111842a75050d7d21000d805e23761c667a83d44585c436bc55640ee764. 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/ES71G1911710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff80c4ca42b930d723a2e9557ec269e54e7d224158416f629f20faed10ef4a49. 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/ES71G1911711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb732e9aed719ddff347fbdb80c3f37d030a08b7f5cf73a201147b5adbcddda5. 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/ES71G1911715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7aa80ab06db20621d83fb15454fdd14e260b49850f24eddbba0f949c22efb212. 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/QMHUY1551442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47a21b816be441353db04dd6cb90f30b354cf13907a13b8831e0cd9c75c1f85a. 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/QMHUY1551445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffe7fb4f1cda5b8143d75754e21facb526bb2eeb0861638e67e701d23e5d2c4f. 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/QMHUY1551448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d4e5718b46363bd7ffacad6df43291b27f329961c98cb6d80653d7fb8e4e9ae. 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/QMHUY1551449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66781361300f75f2de33e8acc45b11a45109e644e44e6acc16996425ad3309df. 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/QMHUY1455641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e9c5fdc53474420e0fc137bf93673dbbf9a71fcad8d775072254ab0d285e074. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QMHUY1551452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb421804950716a0cdc2ba45b6cb915b6e7e41faae6ea56aa13baa421629feec. 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/QMHUY1551463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ddf6178274f92b58c8957f2b4dad3e5e1b84a00808efb9ba5b099a3e0276914. 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/QZ7R42354203.
Homenaje a la Fania : El Cantante / Usted Abusó / El Nazareno / Gitana / Periódico de Ayer / Anacaona / La Murga / Plástico / Bemba Colorá / Qué Cante Mi Gente (En Vivo)
Homenaje a los Blanco: Tu Traición / Cuando a Ti Te da la Gana / Cuando Florezcan las Amapolas / Perfume de Rosa / El Espanto / Maquinolandera / Caminito de Guarenas / Volando / Hoy Es Vierne
Homenaje a Pastor Lopez: Traicionera / La Cumbia / Tienes Que Regresar / Pagarás / Sorbito de Champagne / Mentirosa / Golpe Con Golpe / Golpe Tocuyano (A Mundo Barquisimeto) / El Espanto [En
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f14f96d9675379029fd94d6232d59e5b9d9933d9fe66f71fb815f782befa761. 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/USCGH2105647.
Mix Joe Arroyo: La Noche / Tal para Cual / Ella y Tú / Las Cajas / Rebelión / En Barranquilla Me Quedo / Ron Pa´ To´ el Mundo (En Vivo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe0321da222ef5e46a6ebed169ee4813c8ab6db228ec83ba9074676c17cc06c7. 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/USDY42434048.