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 0xfcb1b4f95d172e9520aa67fdd1fb71cd600254b22f8dbae01e89515ac4883f13. Chain 2 (Bitcoin): anchored in block 953842 (2026-06-15T22:22:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fdae643d-1770-471a-bbd4-3429c6f7c7c9.json and https://artists.proofprofile.net/proofs/artist/fdae643d-1770-471a-bbd4-3429c6f7c7c9.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 0x7c8a25953e123654cc7463f64814541c80083f4b429aef4f95c3222efae6e9c1. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QMZ621402791.
Oregon Marching Band Performing Pirates of the Caribbean
Fighting Duck Spirit 2005-06: The Incredibles
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35ab31dabfda20b6a8af2d5e18c694da01198aa531b2d880d39eafdc57a42de8. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QMZ621402748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3db3859aea22a03791cc870ac5990f819fec37aab076a340ae4e83fac080d74b. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:46:44Z), 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/QMZ621402713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb560c0be213039c672b3382870ea3152cbb1f7e7506325330da65ed6f39aaee7. 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/QMZ621402717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01e44a2735f6f3b0e49cef387502fde2bdf05e6eb4cf04047dc12e95c52c317e. Chain 2 (Bitcoin): anchored in block 959076 (2026-07-22T02:32:47Z), 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/QMZ621402723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x268655bd8aba2cc87043c3e2faa8fdad5e8784e75deb5e88c2f502a00e52bcc5. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/QMZ621402697.