{"copyright_id":"0x1d2209093af6f1c62a7f182bad2fbbf36fdd32f5bcef3d7c3286f4ee4841f99a","name":"Piotr Zabrodzki","registered_at":"2026-06-20T09:49:11Z","symbol":"NIM1583420","token_address":"0xfcf1dfd685d1c61fca6f22636ef08eaefa9d991c","type":"artist","uuid":"ab93b4ec-ed1a-4e6b-a87c-cd8dd51ab2da"}
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 0x1d2209093af6f1c62a7f182bad2fbbf36fdd32f5bcef3d7c3286f4ee4841f99a. Chain 2 (Bitcoin): anchored in block 954553 (2026-06-20T11:51:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ab93b4ec-ed1a-4e6b-a87c-cd8dd51ab2da.json and https://artists.proofprofile.net/proofs/artist/ab93b4ec-ed1a-4e6b-a87c-cd8dd51ab2da.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 0xbfb385cb39e5c46e4bd9db414ea783daee500523116cec6933f58aa8959106b1. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/PLD642400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x266b8c2138e16e284e2fecd2ee27c74ab64384a56fe263f5733a22ad4da7fd3b. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/PLD642500043.