1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x11edb39f6e9bf1eb176d9802bddbd0def057d428037a01ced8ce30ab2c3e44ba. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5c64681f-e471-4a26-8a3e-c9786220f1ec.json and https://artists.proofprofile.net/proofs/artist/5c64681f-e471-4a26-8a3e-c9786220f1ec.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 → block OTSBitcoinBlock must exist at that height 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 0xae30d0c77f8fddb20bdb396f5863e61ea23350752908e96f7b6c396c1923e6ba. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/GBCFU0600796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02540bdc8ae0ff79810551526ef2666531ca4e7cd78a0695a162edd2698c545c. Chain 2 (Bitcoin): anchored in block 957648 (2026-07-12T03:52:24Z), 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/USCGH0628100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c3f21f89d714161582f549bff2bacbe738b14c9a6ef29bd4982ba34c2d87ae2. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/USCGH0628113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafd68dd3a4416d7fc07d4eba2ea1d2587af996e151136525cb774465fdcf5fd1. Chain 2 (Bitcoin): anchored in block 956397 (2026-07-17T03:11:46Z), 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/GBHSG0500008.
Goreuon Canu Gwerin Newydd / The Best Of New Welsh Folk Music
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb414c8d547f49838109334883524381817012e873205be243447b4df90090803. 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/GBCFU0500007.
Gorau Gwerin / The Best Of Welsh Folk Music