Ardeshir Kamkar (, born 1962 in Sanandaj, Iran) is a Kurdish musician from Iran. He started his music training under the supervision of his father. He came to Tehran in 1980 and continued studying tr
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 0x2271880c6fc3239274e69b563bc79da46188b7c84b85b16a4fb47fa12d3b7118. Chain 2 (Bitcoin): anchored in block 953657 (2026-06-14T16:43:25Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4da1f292-11db-4961-8c1d-baf93a0fa38a.json and https://artists.proofprofile.net/proofs/artist/4da1f292-11db-4961-8c1d-baf93a0fa38a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Raz-E Negah - Kamancheh and Lira Improvisation
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 0xace9984dfc543a24c5d2299c879f81b32a882b86d1d53974ecb5d0b47c0c7c5a. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/IRIRA1010675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c6d2cc357453049f48e09649ea1133407e02588f282919a04d787a473961488. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:49:42Z), 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/IRIRA1010682.
Missed Certainty (Duo for Kamancheh and Percussion) - Kurdish Instrumental Music
Missed Certainty (Duo for Kamancheh and Percussion)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f4483cc5844278c5f9c90e68195258776ffa9fca40f8d1ed118db1ef6d528da. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QMFME1524340.