Cuno is both a given name and a surname. Notable people with the name include: Given name: Cuno Amiet (1868–1961), Swiss artist Cuno Hoffmeister (1892–1968), German astronomer Cuno of Praeneste (died
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 0x2f59ebf1facd405e51192d8cd5b640f53f458a1ca4d468382a16e3be23ce6f94. Chain 2 (Bitcoin): anchored in block 954549 (2026-06-20T10:56:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a9a6382b-3c8e-46bd-8725-ebe0c3be8ec0.json and https://artists.proofprofile.net/proofs/artist/a9a6382b-3c8e-46bd-8725-ebe0c3be8ec0.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 0x16ec2d1b1694b0d6fa5150b1966a44b260664d157036017957db759d66a0a4f6. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:32:07Z), 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/QM42K2026895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2af126e86cedb1e9a29ff13ce149f645315dc0424278f8247d650beac5922f2. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-21T23:39:20Z), 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/QM42K2137762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd13327728b95aff6d6511323c145bef5775e4a54604cd30d3403827d26a3a74e. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T18:23:35Z), 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/QZS632295571.