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 0x4ac986f253c340ca9f31dd6ba35fbe2a53b3aa81ed3cc840030980aa7f3e53cc. 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/394814d2-579c-47b3-89d6-fa8c2688bd59.json and https://artists.proofprofile.net/proofs/artist/394814d2-579c-47b3-89d6-fa8c2688bd59.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
A Chocar Lo Platico (Arnold El Fenomeno)
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 0x273f297465234bc81b7a769181dcd2c29b83e1f0da027b2a5460dc3a3015ca3e. 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/QZK6J2512229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x308c4d08bbfa33332dbe512c0b209eb2e5d2a02189ae333691e716df2596bbd4. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-19T22:59:45Z), 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/QZK6J2509608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e828cc89d21a4eeef37e28c9db83700dd68b1170b441db10700c516b37d56c9. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T02:22:53Z), 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/QZK6J2508273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c9118a489584415d6ad9bade0bf742b7686aa4abe444197714fbfed64c0ee20. 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/QZK6H2500035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86ed6bbd8ce7a1750a6ff4b466648b06199bc55d52101389d8600b1b809136a5. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZK6G2540987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x016e00282340c073096865683a210aff4d938c4fb9ef842e4cebd5c94cb78d60. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-16T00:01:52Z), 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/QZK6F2579474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cf4ae2c540d141c147039f38dfbca8e81fa8d892514888c1cf7ea4e3d28f3cf. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QZTAX2507891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27cd0ed7ca97ebb43bf087c31c3d95264ec47f3dbe59f8f2ed04fe2f29c1fa16. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZTBD2567269.