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 0xc965b42e7f3c76aaef9c42af60b8bcabf6a8c46e124f24d9f3ae5bfbd7774d36. 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/349624ce-0d33-4b25-85ea-3b70d49e485d.json and https://artists.proofprofile.net/proofs/artist/349624ce-0d33-4b25-85ea-3b70d49e485d.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 0x244170f205c2c19bac2dbad60085d30f2a4243b883b46f32546c42a983b339b3. 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/AUBEC2113007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff69ffa74f48753be822927a7611f38b7eff2a7ca2a2db699aebf66ed319b4a3. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/AUMEV2356909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9afc2b1c5eb6119fc67ecc05adcec941914daace1c2979f5586127bdafda245c. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T03:59:21Z), 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/AUMEV2269239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff0812afb684b1bb8d3b6bfd88936d9e570a92934b7372ffa668bfaf01d5b87f. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/AUMEV2237835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c8df04adaf7ab96eedc1170c993b049cbfbbb6809018e8fd2c5ba954c9e72da. 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/AUMEV2245691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa792022f4547304dac8084f995ae97033b9ca3828dbbb33317ccfd30b4a0c375. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:11:08Z), 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/AUMEV2512580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55eab4a56fc1c57ec197453c690be105324dbb71767dd0dfad062813e2f316ac. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/AUMEV2575522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99932ec672fd027212026e81aa6e1603e06bd55329aa2dda8aadc3cfb137ab63. 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/AUMEV2575527.