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 0x46ffdcabfd0117a96d381da9a36008d6db9c9c75c117d9e422c144ffccfc1949. 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/1e2d8318-8161-459a-aa52-caf6b0ff6fcb.json and https://artists.proofprofile.net/proofs/artist/1e2d8318-8161-459a-aa52-caf6b0ff6fcb.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 0x5f14059cc68af57d644e8e30c0ddf515d8f5c051fdf0a20ebfe0a5055dae8830. 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/GBLLT2228479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaebdcde2be7ecfc615b57df8cb5348cf42eec60e9e6be450621831fa0f56e07. 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/GBLLT2228481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41f02bbeb914a1b1655922e6cf0696fafa1b38a413a0ca1634efbf45c07e0bed. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/GBLLT2228485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d17180815548c96705a8edbba25e3d198a2df94c19162934748e1b6f4b1a27f. 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/GBLLT2228494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5212e47903910232e8aafe4f746c031855929a52b73fb9dc97eb8da9e8a73e3d. 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/GBLLT2228805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44a29494975d058eb1f98fb89f93557bbb5f1e07ae804993db9854ddb40af16d. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/GBLLT2228822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8c6e9c1f4fd0bf625e95554d085e4ad2efb2ab121e5485dce641cec1b27669a. Chain 2 (Bitcoin): anchored in block 956861 (2026-07-06T01:57:57Z), 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/GBLLT2228823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbbc06e02908e2016c637f881a8863260a6521c219e491889dcca46e10ca0a4c. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/GBLLT2228826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57289ca7009efbe696a403f985ae0187eec88b7f973945082f121462b736886e. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/GBLLT2228830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae786af90d3ce97a9e390f5a605304c390f96fbc426de3ea373dcccbd12732df. 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/GBLLT2228832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x501c947c6df8a0c607140f68e39c81d87375e076ef34eda37769485c89a7890b. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/SE6XX2245258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x271b3cd0b17d701f4b4b654fff4a57d7dd1d5079175f44aa0176fd7f9c827de6. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/SE6XX2245331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c7b9b2e6ba5546285bdfddb397a6ec970f6a46a0d305912497c2d92ec8bda29. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/SE6XX2245334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x059de88051a8c6d465cc389e047befde09e6b3649a09a933ff96d985f11812aa. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/SE6XX2245358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e907b1e89630efa9519ca1626022bd0893728686686860ce7e32c4fa1dfe1d3. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/SE6XX2245371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92a15f7180ccdfe9d554eae693b3705b65fc748d3bcf7e20ec9bec5b5505ef6c. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/SE6XX2245391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4d44f73463a1878ed13e69322a9738f1e04fbab37ac2f8b1d98785bd4c86d7c. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/SE5BU2311587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33d2131ad00b043f642904e2650404fcfc6cca540c648257354745e7fcc9c2f9. 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/SE5BU2311592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4904fe11f9243efbf41381493e037a0b8f4c86c6445769687534ca580248b7b1. 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/SE5BU2311599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5290e81354f43d0801af61a65253bf2906560af03ba21450cafc60e4663f0fde. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/SE5BU2311600.