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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce9d2f645d423ebbadec4c9088e8dea3863e30f1246e5cc488d9801b3864624c. 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/406ffcb3-0e07-4b6c-a652-8694dc932315.json and https://artists.proofprofile.net/proofs/artist/406ffcb3-0e07-4b6c-a652-8694dc932315.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
En Vivo Desde San Nicolas De Los Agustinos
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x207f316386118a9f1e894c952f0b8fdf07de7abeb12df02c502b1938710f417d. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:19:23Z), 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/USLZJ1980986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2332bd914f8c5777a28b8da179938493ee181eca6bd8fa91654cfa007c82aebb. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/USLZJ1980989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f5b27417cf02af97b1f6e0f8d7c22ac358877bcf41a8ee1c62038c31d0a975b. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:17:32Z), 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/USLZJ1980999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa74270de0c14e856a7e07f97bcb8263b29b1c26cfdc9253d397e86916f0cf2ee. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/GBWUL2046017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80047daa24f097d573bb62520397ad1e1cc099df20eeeb0ff5b4d0e3a4229897. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/QZTRX2125550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd3f6c524d21159ce57dd4e93eb8302dc9d1e704da166ecd660b8034def3ad1a. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:43:07Z), 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/USLZJ2257182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1a4e29bd82b20c6daaec71982465dcda934ae85ed990a29a951e6a0fa500a1f. Chain 2 (Bitcoin): anchored in block 958491 (2026-07-18T04:29:42Z), 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/QZ5FN2344393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcda806fe184eb2c321ca9197289e4cb832ccf42f3558c7e154ca0bf594f234c0. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/QZ5FN2344378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2bef9ada107f6975a09f882ef13a8d8baa7eb9843e377cc22acc85271d061de. 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/QZWDD2564334.