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 0x43103322737e4c5728e20e3e4c20697c8eae859617f9cfb33911abbf9ab3fd6c. Chain 2 (Bitcoin): anchored in block 953699 (2026-06-14T22:00:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6a05e9d6-1007-4e6f-80af-cdd267976280.json and https://artists.proofprofile.net/proofs/artist/6a05e9d6-1007-4e6f-80af-cdd267976280.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Original Broadway Cast of Ragtime: The Musical
Ragtime: The Musical (Original Broadway Cast Recording)
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 0xa255a166c0bc66a35dded90d62d9797c39d70a3dda94582dfe99e8b7e2e0b799. 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/USBC19800946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0d05cca82f62d754a02b89be81f2c7d92415d44776776067f2ea5d802a4155a. 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/USBC19800947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45e1b595a85c84e80be772f3f81c27271e96a27c3ce4cd2fe96e90ebf74d833f. 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/USB960442101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc404d6e26714b32c703e76166f30d0ebde7a693ca81c00104e05bd36d7ee3c8f. 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/USB960442103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84f33cbb05a04de54a9e32089da2dbfa9728a5d666460c97d469abeedd25c1f9. 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/USB960442104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd37e2aa2c8f1bee9efddab0b5bd3cbb61e217ea619c83b9556d1df2a0f81c43. 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/USB960442112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea6afcb6f1d1fcb741cb5c23dd9298d5351c71b046c66207005d3624d58a5773. 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/USB960442113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c8c268c5a08eb55c5bce4759eb5b626d111f2eaeddae916eb38f66a9582355b. 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/USB960442115.