Chór i zespół instrumentalny duszpasterstwa akademickiego w Kaliszu
{"copyright_id":"0x348d9c83f8d701c8ccfd3c6305a223e78d15adf28c5ec309d2520d7eee7233f6","name":"Chór i zespół instrumentalny duszpasterstwa akademickiego w Kaliszu","registered_at":"2026-06-16T22:07:54Z","symbol":"NIM1190320","token_address":"0x15ab383d2e5515756a7c9f3716f6cd6f86948732","type":"artist","uuid":"5d2a53cf-712d-49dd-8b45-0ac05421e497"}
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 0x348d9c83f8d701c8ccfd3c6305a223e78d15adf28c5ec309d2520d7eee7233f6. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5d2a53cf-712d-49dd-8b45-0ac05421e497.json and https://artists.proofprofile.net/proofs/artist/5d2a53cf-712d-49dd-8b45-0ac05421e497.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 0x9a66e11d5f07955d3284c0f0da108b5461567d1829bcec0df9827e587d6c2cc5. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/PLL971400227.