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 0xcfa3909bff2d484d3bab83d6ff76fb68416b073ea0fd96c31f9c6f55b550ca43. 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/dd09e9a5-2a75-4679-a7db-4f918ee76605.json and https://artists.proofprofile.net/proofs/artist/dd09e9a5-2a75-4679-a7db-4f918ee76605.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Drop Top (feat. Yella Beezy & Flipp Dinero)
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 0x2d8167681d0b1fd0bf5177cc072f3bb0335b88592092f770a45a2a42db75eb3b. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T20:23:57Z), 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/CAV162000024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f8038b0e24cbd02fffcc4804150b9daab5530374843beb68500975c8cdfc0e4. 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/CAV162000032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f8038b0e24cbd02fffcc4804150b9daab5530374843beb68500975c8cdfc0e4. 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/CAV162000032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d8167681d0b1fd0bf5177cc072f3bb0335b88592092f770a45a2a42db75eb3b. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/CAV162000024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42e31f54b07476bd6eeb0a85fe8521d8f90da59c0079c4f8ada3e5276d9ab714. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/FRX452518299.