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 0xad38a697f90b5eb3165bd644e5fd9e699a6a342c55b8574d70676db3134c1cd4. 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/5d970fe0-f2aa-46e0-98f2-016d107018bf.json and https://artists.proofprofile.net/proofs/artist/5d970fe0-f2aa-46e0-98f2-016d107018bf.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 0xb97522db03961c2e968324137bebd23a367c39e40d1a5a1d6444574553bdf93d. 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/QZGLS2492685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ef1a6d40d88effae4e6a1271afa9276d17b5b07482b1dd42282c0955b920398. 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/UKLVE2201227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f60f7b76defce2a8befb2f653412fc855c05dc1d0339ee6a3b5e37fe95424d0. 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/ITFGO2200045.
Traveller - Kususa & QueTornik Official Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7732b2b815a17081e559255de44729858e50fc508541d4f7a83e8345c068e3c0. 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/GBKQU1761362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5bd0fdc44f51b1fe98f72d60e82955a1018ed5deb9da465c96d540e23ec73ad. 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/DEBE72100873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00ac9623377fbf1657d5b1d84c2e94a80df2f70b7f6ab55dde5a942765763824. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/GBJX32032139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fef726acc0c3a7a8004e50199d65d98e20774a9ebfc05300119e14421c09c86. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/GBJX32032137.
Peppe Citarella Essential "AfroLatinHouse" 2022
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47a52c3d3f3131b4d2231fd4abf2a5df9e3f9cf9825dffc91eb1a323ba7b69a4. 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/ITLCJ2100371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98c55055975877f2e0ed6a956baf60152e437f2494d29f103baa8003208ec141. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/GBJX32032138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cac1190a246850320a1283419dfc0c3557cebfd070a8136d992785abfb47de4. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/DEHM81800269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x084b57714caf5933d5a5a3cd9bf396d422cbe71e0125e748419c0bb9a16f0774. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/BEY922007008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5c5b93445322d6ee06709659496f7d3bca0b4a97665a0dc51cbe18f9e6c8560. 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/BEY922007010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa01ab71450c84e02ce282d25dfd1776f74dcbe45980a5baec78c00641f5b0798. 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/BEY922007011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca4ed399757540ed1fecc74be4fc878e6b66c44c26292d29dd3079f6da36b264. 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/BEY922007012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc015268e5ed6ff8d6eeef20c0a4ced1de4c657a9340f8d84ef3e19cb0bb9fd2. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/ZAB5U2000012.