CNR may stand for: Arts, entertainment and media China National Radio, the national radio station of the People's Republic of China CNR Music, a Dutch record and video/DVD label "CNR", a song about C
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 0x6bbb37a9808ce09b1a01ed06913f408a2ed98518ffd2b3185d2c24299019f502. Chain 2 (Bitcoin): anchored in block 953709 (2026-06-14T23:31:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7df7aff2-6afe-451a-a04a-0a840fbb7cbf.json and https://artists.proofprofile.net/proofs/artist/7df7aff2-6afe-451a-a04a-0a840fbb7cbf.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Mañas Mañaneras (2022 Remastered Version)
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 0xde23aebb128659fafda2475b3985654281be3e077d32de1adbe3e4960779e1bd. Chain 2 (Bitcoin): anchored in block 958756 (2026-07-19T18:49:57Z), 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/SE6QE2296354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e8053da3920f304ca0deebf86cf38782723590e17361fabcc60aa5b5f3cec8d. Chain 2 (Bitcoin): anchored in block 957629 (2026-07-11T23:44:46Z), 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/QZWFW2440661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8bc1cf51ec7629e6df51673ca7c3be7a4a57f6c4c6073afe5160429bbd7b187. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZES82526344.