Aref Ensemble
type: MusicGroup
genre: traditional music
description: The Aref Ensemble (in Persian: گروه عارف) was a Persian classical music ensemble. It was founded by maestro Parviz Meshkatian, Hossein Alizadeh, and Mohammad Reza Lotfi in 1977. The group was named a
popularity: 12
followers: 1081
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x3bc1ddc560efa7e052c5f7c7ae4831f144a21585e78ba20f3a5e5743fa757c9e
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953741
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953741
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/98c29223-baa1-40be-9355-a1227d7b0d98.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/98c29223-baa1-40be-9355-a1227d7b0d98.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/98c29223-baa1-40be-9355-a1227d7b0d98
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-15T04:44:49Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x3bc1ddc560efa7e052c5f7c7ae4831f144a21585e78ba20f3a5e5743fa757c9e","name":"Aref Ensemble","registered_at":"2026-06-14T20:36:24Z","symbol":"NIM0569383","token_address":"0x6b64f2eed547cc6149af8885978815f6a95dd1b9","type":"artist","uuid":"98c29223-baa1-40be-9355-a1227d7b0d98"}
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bc1ddc560efa7e052c5f7c7ae4831f144a21585e78ba20f3a5e5743fa757c9e. Chain 2 (Bitcoin): anchored in block 953741 (2026-06-15T04:44:49Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/98c29223-baa1-40be-9355-a1227d7b0d98.json and https://artists.proofprofile.net/proofs/artist/98c29223-baa1-40be-9355-a1227d7b0d98.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-15T04:44:49Z
  text: {"copyright_id":"0x3bc1ddc560efa7e052c5f7c7ae4831f144a21585e78ba20f3a5e5743fa757c9e","name":"Aref Ensemble","registered_at":"2026-06-14T20:36:24Z","symbol":"NIM0569383","token_address":"0x6b64f2eed547cc6149af8885978815f6a95dd1b9","type":"artist","uuid":"98c29223-baa1-40be-9355-a1227d7b0d98"}