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 0xfa2463bed642e9eba14fd65c195311b929761df7efd73942a5b5f7094af78613. 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/6798df30-d59c-49aa-8903-62a98f43b045.json and https://artists.proofprofile.net/proofs/artist/6798df30-d59c-49aa-8903-62a98f43b045.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 0x0d252e5369dd320c66f6e2700b47847f2fe4deec2e78990db2a67bd9a6d97509. Chain 2 (Bitcoin): anchored in block 957658 (2026-07-12T05:03:28Z), 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/GX5MY2372357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a66bae59bfc485898fd6778d30fee25283b25d35ff5fe5c0729e7d5f629cfa5. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/GX5MY2379600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02f050ae704f9c97fd0dce2c481d65768b44108ea90a44e981a92334ad817b1a. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-20T01:29:55Z), 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/GX89G2429447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37b26c6b3896c6b0acac5abbf69ab56f934ec1ac33a8de19411b590bb9eea94d. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/GX8KD2432039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41a61d915f5100f5f03e5ee458c2ce21b77919154f54a1cebf8caab4d81c5d31. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/GXBDS2481155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x231c05ed440794afb88d4ad3ebcbdc9673c16ab79cd3c142344e8706557466a2. Chain 2 (Bitcoin): anchored in block 958116 (2026-07-15T10:02:43Z), 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/GX5MY2438348.
We Don't Have To Take Our Clothes Off (Techno)