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 0xd150ef4ca82bfebd6bb641e7ded2671fb32ce3482a5e04791d222d62ec1fbc99. Chain 2 (Bitcoin): anchored in block 953596 (2026-06-14T06:21:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/09cf3c59-84d0-48df-af67-7cbbc9834270.json and https://artists.proofprofile.net/proofs/artist/09cf3c59-84d0-48df-af67-7cbbc9834270.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
熱帶天使 Tropical Angels: A Taiwanese Musical
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 0xebdb93e08f501cb92b0e56a2ea1af35cf534cb1b718b279261146c83a554ccf7. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/TWCC32320574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cad221967af3697448c73eb8c52a6c7368f7fc9a52d80cef5c8205a88fd6bc1. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-16T23:23:52Z), 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/TWCC32320919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe617a3c391b7390b6ed5f89f96fb030e579d95282d60ae4e343065fbcfbc5fee. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/TWCC32320921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbc7f84ea96336e229c3e4f2addf4915dc919792294e74e97af7d5022c07c223. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/TWCC32320954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf95be61cc9ab5b717abef90136226c4202f92523f2a580c93bdd80fd5ef313ff. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/TWCC32320955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c085cbff24f21a0c74ce1ff6937b1934fbf1a3bd93362516a4f274be2211eae. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/TWCC32320965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a5d971ce2cba8d0816d4b53c9f2986472ee31ca0ab6b7b3df67cbe133c43e94. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/TWCC32320966.