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 0x6f149c67b0c5e2ecd3308abf350e1a52f7ccb095b458f8ec7f8517e3bd32d582. 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/41f016c5-81e9-47b1-ad16-8c47dd8d2328.json and https://artists.proofprofile.net/proofs/artist/41f016c5-81e9-47b1-ad16-8c47dd8d2328.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 0x14cc9ff2c41d3c3840f11e4b6888950650cc2f59008d5af26217eaf7b5d2d70c. 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/GBUQH1200045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x245c8d818fd53432425b7be1a9ce7e2b499644595b11d6f90a8959a0fb87dc62. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/GBUQH1200046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba7736a293361f0d999f1d9b6753f502c4babd52a792cea1928f0cfd377a47f5. Chain 2 (Bitcoin): anchored in block 958397 (2026-07-17T10:29:45Z), 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/GBUQH1200048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc49b04d14f484e10643de2138364ed8f35a69cee5d7e122c8ff45cde765ae239. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/GBUQH1200050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9735f4e3d1c833ac10d16696e0b39adbd42edb520cfca1e590a6d687de0ac620. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T07:27:09Z), 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/GBUQH1200051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14cc9ff2c41d3c3840f11e4b6888950650cc2f59008d5af26217eaf7b5d2d70c. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/GBUQH1200045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x245c8d818fd53432425b7be1a9ce7e2b499644595b11d6f90a8959a0fb87dc62. 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/GBUQH1200046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba7736a293361f0d999f1d9b6753f502c4babd52a792cea1928f0cfd377a47f5. 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/GBUQH1200048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc49b04d14f484e10643de2138364ed8f35a69cee5d7e122c8ff45cde765ae239. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/GBUQH1200050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9735f4e3d1c833ac10d16696e0b39adbd42edb520cfca1e590a6d687de0ac620. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T16:16:18Z), 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/GBUQH1200051.
Los Miticos del Ritmo (Soundway Records)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51ef6fc972f2965aedf1563483a7f6c5e67d780b32dcdda5b21b22d327ad111c. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/FRX762095301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeec3b598647e884da80e77e8f57d7baa4db50f921dc742d3b65a3be9294917b8. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/GBEUE1002199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x249d692c352c29d80efbc2fcbd400ed4b295d377437d7da59c25081533fd69b5. 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/GBEUE1002196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85736349e33151bed8b4f080b86d7dff7707da04cdf949f15622621e24b30ce8. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/GBEUE1800031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dc0c2f902ca89b0f7aeb0b4c0f7a34da751d23c2e6c7860aca8a0e68c579cc0. 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/ES71G1412729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8502098885f11695c530cfce16ae53bfa4ef0863f413e6983bc7e7f9df707a78. 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/GBEUE1002200.