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 0xf978755fd9b9a751628ed79159e2d56a817655106321f54ea4a4b29ed54f91be. Chain 2 (Bitcoin): anchored in block 953827 (2026-06-15T19:59:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ea2a0dcb-f7d0-43c1-9a27-9479fe6e8ee4.json and https://artists.proofprofile.net/proofs/artist/ea2a0dcb-f7d0-43c1-9a27-9479fe6e8ee4.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 0x873a535529a7bd7cb2a2bf899a680db8c01a93b6e770576df797631b5762a449. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T18:56:32Z), 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/GBQLU1100170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x096ddf813790258356827b62ddb13574a27684481b980152a52dda854001a912. Chain 2 (Bitcoin): anchored in block 958662 (2026-07-19T04:43:15Z), 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/GBQLU1100088.
I Love You All the Time (Play It Forward Campaign)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc2bdd0d7315aa27ecf4008e7274062433d84574452f16e62347ebe57dbb7847. Chain 2 (Bitcoin): anchored in block 959015 (2026-07-21T16:44:33Z), 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/UKNN41800002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bc001204c720110975ceed0273c5a761021b5f4af858e57213932becce8ba43. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T17:09:45Z), 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/UKNN41800008.