DeMatha Catholic High School Concert Band
{"copyright_id":"0x1c6bea562a702072aa0b2f25aef75533405a319d259fc5410656bbd7d4ba49f3","name":"DeMatha Catholic High School Concert Band","registered_at":"2026-06-16T11:38:59Z","symbol":"NIM1040268","token_address":"0xd4ad2346cd0796bbbb6ab4ce22b3b99b27adf6cf","type":"artist","uuid":"3f5de2a7-cb41-411e-9da0-80ebfcf72e56"}
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 0x1c6bea562a702072aa0b2f25aef75533405a319d259fc5410656bbd7d4ba49f3. Chain 2 (Bitcoin): anchored in block 954043 (2026-06-17T04:15:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3f5de2a7-cb41-411e-9da0-80ebfcf72e56.json and https://artists.proofprofile.net/proofs/artist/3f5de2a7-cb41-411e-9da0-80ebfcf72e56.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
DeMatha Catholic High School 2022 Instrumental Festival Performances
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 0x5b7a8103315e9c81b2049e8e43cb98d36f2b97d5bf99e6282bb99e347d7a96f9. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USLZJ2283477.