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 0x9d9ee14643876dbbaba29e7938c93667a94c5b3d46053c6b9370ef700366e96b. Chain 2 (Bitcoin): anchored in block 954647 (2026-06-21T04:36:58Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d65bbf4a-53c9-46b4-827a-255ea92ee356.json and https://artists.proofprofile.net/proofs/artist/d65bbf4a-53c9-46b4-827a-255ea92ee356.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Ihunanya (Your Love) [feat. Hotr Choir London]
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 0x72c946f2e08ec005724b386d36196d0359404db93e79e09616caa00c86c73daa. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/USCGH2041965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63f2ce6ae3148cbd8e962725f7f082ca609daa298c550875e066f1073f54ae4d. Chain 2 (Bitcoin): anchored in block 958918 (2026-07-20T20:06:09Z), 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/USL4Q2064867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57a8cf66f679831c980fa2c62ae4e2d44b4412ae4ffdf193de25426ada941f04. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/USCGJ2250126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf4bd4cfd40437214d144858e85efcc3bf8da40f85ee9b01872daee69f24f843. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:10:31Z), 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/TCAHN2304082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78681ca56e06d6b230b6b9db22017df130343c83b11f07850f8b15410c6edcf1. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/TCAHM2362302.