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 0x70f5be75963af450abe48b0fe0ada6624c4f1aebcba0ad0190cf5162444aa653. 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/fac9c74d-a21f-4f38-94a4-92dcd7ae8208.json and https://artists.proofprofile.net/proofs/artist/fac9c74d-a21f-4f38-94a4-92dcd7ae8208.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x305b508d39095818d6eca4bc798f894a9fc2c170cb6e2b54a998f3e14f8ab699. 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/USVI20400082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb6a5fcfb90852a020be76312af05f21a167ea1d1b9f10c462e264cff8f3556e. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USVI20400083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x593dec49a9bb873a5628790d437010a792c579cbe460da4135c0b1a65b533d77. 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/USVI20400079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ff19248cb018250b616dfd23bb3576efc2c9aaff4ec121012aae1256506c562. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/USVI20400077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89e9a25862fe8bbc23a87463800b0dd06726ef9efe80a166fb41338b0a150c33. 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/USVI20400016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbbc332b87b495b8010bbc7bcee13664ff96478d0c7edd8841d9686f5d3fc05a. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USVI20400078.
Wonderful Place - Contains Hidden Track/Waiting For You
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbda6b3458a3f9bfac5335be4624f902f747cc949ddceabb0a95c928cfb54c883. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USVI20400097.
Drill Sergeant - Contains Hidden Track/Preservation
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdce6b3bbf1ceab0b5ac09b83f071e2bc48e8ba11c2986a24cfe084691ff3d918. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USVI20400098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdb312f8185a85dcddcc8f3c88af33bb0e1c8427f211b148194b771fa76f895f. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USVI20400081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62f96fd195d7b58ba6950db7981fb220b0577fc4d3637ee833d42f7534a0e754. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USVI20400084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bf7056ea1190f94b12aadccf180e38fcc086176af47d4785a0e3f6a2ac775b1. 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/USVI20400087.
Chariot Of Fire - Contains Hidden Track/Find My Way
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x093505984fdd19a0139913e8dd08bc1634cb902cdcd595bde745746fbd22b135. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USVI20400099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x843a84d3b5462148a3b4c512fd9125ff3215b91fcc9afb7657986aeda8e70bf5. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USSM11802961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb92b14dee6f1273aaa48ce652a03c51e382d875638e9585de966cfcdf1945c6e. 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/USSM11710534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x593dec49a9bb873a5628790d437010a792c579cbe460da4135c0b1a65b533d77. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USVI20400079.