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 0xf4e37f7d921d547d34a7053af91a5338f61d4b700797c4c34ff98f2fc7853d6c. 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/df4d441f-369e-4071-afc6-39755ca17fa8.json and https://artists.proofprofile.net/proofs/artist/df4d441f-369e-4071-afc6-39755ca17fa8.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 0xece3f5c1e3b28292e01e2431cbe539212eaa53e1403839e2269355b52eb8ed37. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/TCAGW2398983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x073ce79fca986706656de9fdd640f56f6e1bfeeedc40b47a7e68b5af4f12da45. 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/TCAHD2346624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38c2660f8f487fe140a67b4830b3ad7c236087ec93b135f52a7097fe1c7f98cf. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T04:30:31Z), 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/TCAHG2368568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26c33bc6dfaac8dae0e3f485f32e7d052cbd1fe6791bfd9f18e49e1f34432154. 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/QZK6L2486155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c3ca651e030cbd9eaa5e01d7d10a3923cce4fa35b70994b4063e28402500cc1. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QZWFJ2416528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b229dac34206d30f44085e6fae433c14155e1f9944af412e652122f1496282b. 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/QZTB82530581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4a0e6a8c0f5b3708e0e1fdf93094b0b49a0718b671715f954715d1960490258. Chain 2 (Bitcoin): anchored in block 957780 (2026-07-13T00:36:44Z), 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/QZTB82530582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8353e1db7c6817639438c88244e9b843c8be50d23fe3538aff8a71efb8e3cba. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T10:07:26Z), 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/QZTB82530583.
Cult Programming Dove Girls (availax Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5dae87dd057a130ae91a93c3fb7e769e016d641b1ab83e368297cbbacba8c2c. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QZWFS2574974.