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 0x6a536783f9d6c5984adebcda687b238dd0c0a14987b827b266898d808f0e644c. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c9810446-95df-4110-a756-b7343a7bb10c.json and https://artists.proofprofile.net/proofs/artist/c9810446-95df-4110-a756-b7343a7bb10c.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 0x8d6a8b4bcd8e1161df84fffdaaf8d87283e45f0ac1742597fa2237215e590856. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T19:17:28Z), 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/COC018818878.
Concierto Para Alguien Que Se Robo Mi Corazón
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06398d72dcb7327d929e62719daba9b1621ec676215c84101b73080e73ea00c2. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/COC018818877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdab230aa5dd75c9b986894d68aa5a642ff06dd160e2c787467b677123de294b9. Chain 2 (Bitcoin): anchored in block 957805 (2026-07-13T04:34:37Z), 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/COC019522167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x257dba857920f101c1bb6679112471c278b5cf91d8edad477349bc08d1f466a1. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/COC019522168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d95c4bda7d60c0dccdbc3eaba5c05f1c38201a7d53383d77403f28e94de0409. 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/COC019522169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64d007ab292ece79f8e31deda210518c67b97ca24dd5c449e343c6b6bcf037de. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/COC010024178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83fb17d72d6a5ec521467db1d1bc7ef791fa8906cc3fbfb3431af8a09810288b. 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/COC010024189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74903446d781fb4934e8f7c6379d060ed6ee017a997763900d458a7e368da8c7. Chain 2 (Bitcoin): anchored in block 957884 (2026-07-13T16:55:06Z), 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/COC010024183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3992f40f61fcb63a51cc2bf36f3ad8e553f19104b6d45739ce2a6c44b4eeb7c8. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T14:57:46Z), 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/COC010225505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d6a8b4bcd8e1161df84fffdaaf8d87283e45f0ac1742597fa2237215e590856. 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/COC018818878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7e79840ee34dec82864cc71483d655ce89fd5f7ee2d93cf1800483069dca333. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/COC019823752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79e896fd5c43f2a69d6c3c3a88414401bcf728051b7b97f7941747269cafc933. Chain 2 (Bitcoin): anchored in block 956745 (2026-07-05T05:33:35Z), 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/COC019522171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x211c102f0ae6b473ce983311742e2430fdacaae7c27cf50d8d778f961b349278. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/COC019120950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02b4e6645582756cb432e34e731a7e2b3fac3b079e5aa1d8783bd779f4c60fdb. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-21T21:34:21Z), 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/COC010225508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x277c3656a48a7007e2e813449dbdbaf6bcf38c938d434919656d79e388fd08f7. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/COC019221415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2ffaf4b12787cba8a47f8e885a3a7269f6e35b6908d7f807ab6e2e6455fe3a4. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/COC019221416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26dd41735ebf777acd0ce8136bf29cdd006df4b08090b2345f680feac27d6bb9. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T02:01:41Z), 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/COC019522170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x384f325160a02610989a7c93def53e9d1eded106cde7a2d764e7d05e38b94a22. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/COF011700223.
Alegría Pal Carnaval (Alegría Pal Pueblo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55d39a1c9cc11c5c3ca9cafddd0f8616a2e315cd26fa3d419ce5b200131f44b6. 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/TCADQ1896643.