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 0x41cd07abe39b9384eb8bd0ab98b4510868233cce028e556d3f381f603ef6a993. Chain 2 (Bitcoin): anchored in block 954618 (2026-06-20T23:05:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c89f9087-d8b0-4dbe-826b-2030b72f2c94.json and https://artists.proofprofile.net/proofs/artist/c89f9087-d8b0-4dbe-826b-2030b72f2c94.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Side to Side - Ariana Grande Ft. Nicki Minaj Tribute
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 0xd788417a88df86f1c2ac1c21f11f8097bc3ec43e9246596296f77a207df1a43c. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/BET231632893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9b6e5b4e0ddce4d9bce309e8fd32a2f97bee8e1e2365407f3e0751c9b067368. Chain 2 (Bitcoin): anchored in block 959091 (2026-07-22T05:10:21Z), 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/BET231632949.
Perfect Strangers - Jonas Blue Ft. Jp Cooper Tribute
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f227e2b173a771c71668d1e361e2ff8b8eadf6bcac672e9a8a44c78f12fe932. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T09:09:54Z), 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/BET231632980.