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 0x8109dbf2b2e7b612fddd4824b850100dfd06811751804288efbcf76711e02515. 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/4f1b8946-2d7d-4943-99c6-182e26db27fd.json and https://artists.proofprofile.net/proofs/artist/4f1b8946-2d7d-4943-99c6-182e26db27fd.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 0x1fa71b5e5fb7dd1c73f852c3416de346fe1d9cfdd0d0063caf1f426ae7a10a56. Chain 2 (Bitcoin): anchored in block 958329 (2026-07-16T21:48:38Z), 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/US3DF2094347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaef12174c016f5e452c0bbcbfe38685b5d814f3847c78a1cb39304bc0d36f640. 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/US3DF2094329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf73138e4928274f394026e5c5177cc5a8144a8620bad7c8b95649aab004d97e. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T19:27:18Z), 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/US3DF2094336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1957ac402935deb99bfd61586b8799634301ea687cf16b480c1a6055dd616caa. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/US3DF2094327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaef12174c016f5e452c0bbcbfe38685b5d814f3847c78a1cb39304bc0d36f640. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/US3DF2094329.
Perdóname / Busca Un Confidente / Que Vuelva / Ese Hombre Soy Yo / Yo Me Iré / De Madrugada
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x217a97127f7dadcc348ed62c6af9425a893852a7784769b407045075d7fcb2ce. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/US3DF2094349.
Cinco Minutos / Cómo Te Voy a Olvidar / El Sol No Regresa
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3ebfd7bf18c9f48da59763e5197a01d8774420aaa1b97144d38d5b4981b7145. Chain 2 (Bitcoin): anchored in block 959011 (2026-07-21T13:26:15Z), 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/US3DF2094351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d3bce7f78e29001f74065eec7471b51589b052255a3d5aca4c5464c8a7748e2. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/US3DF2094354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88da70f742600576ec017619f5e1228086e2c0c9c6152233aea3ec2939c9f76e. Chain 2 (Bitcoin): anchored in block 958988 (2026-07-21T09:08:06Z), 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/US3DF2094358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a8da712f30c10190524a26d25b07f30493ab9247372cc7e0d077edf41d9609a. Chain 2 (Bitcoin): anchored in block 958197 (2026-07-15T20:40:29Z), 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/US3DF2094360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1071110047749b8a18a15adaed0fefc50d146172112a6f0bf8fd5ea65ce4f01f. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/US3DF2094362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c2a24dc1dc4156d6eaf749cde4e9ab59c835ef2e559c3f05795798bc3ec079c. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/US3DF2094359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1071110047749b8a18a15adaed0fefc50d146172112a6f0bf8fd5ea65ce4f01f. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/US3DF2094362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f68f8a62b89c2123e583e524d17c26b94fa818bd4ab46d27d19cafdf084f07a. Chain 2 (Bitcoin): anchored in block 959073 (2026-07-21T23:25:37Z), 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/US3DF2094363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3edb64e47a93dd539a591df3a09d3698098fc6d33bb30601c904b811a5615c8f. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/US3DF2185641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28df2ec480651b23e0beba6ead4f8a3ad55229132ff6ebb57c20d53e6f9ee9dc. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T11:08:30Z), 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/ARQIH2291138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebf90298b268b13a97f1eb0ff776650388801d25473265ac5ffcda63fd29fe30. Chain 2 (Bitcoin): anchored in block 958390 (2026-07-17T09:35:49Z), 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/AR5UH2300563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9445475c658ab4a2c9fde5c56c53e1a72b568e414cce9491970d77bc086fccc5. 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/AR5UH2400298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde701741d4edd4d3562c6259dd93ef26ff936604678e08afb24a03ca5e20b3e3. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/AR5UH2502394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bc17933c991e78cfdd2e90ba0c5a96269bdc9c9632840446a580b343de3a742. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/AR5UH2503029.
Fiestas Patrias Mix: Los Super Korsarios del Amor
Fiestas Patrias Mix: Los Super Korsarios Del Amor
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7648e7a4ddc2b14c8dd1a474977b71e02b13ff21c729ba74350d2fc6294d86d. Chain 2 (Bitcoin): anchored in block 957025 (2026-07-07T10:59:31Z), 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/AR5UH2400661.