Eef Barzelay
type: MusicGroup
description: Ifar "Eef" Barzelay (; born May 12, 1970) is an Israeli-American musician. He is the principal songwriter and singer of alternative country band Clem Snide, but has also toured as a solo act, both as
popularity: 8
followers: 14
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x8fe844b4743bbbed3ed7319467880cdcb9f38616a2ac220262cc2ce61dcbe1be
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953899
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953899
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/12e81238-8f87-423f-a96b-4b1cadc123ce.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/12e81238-8f87-423f-a96b-4b1cadc123ce.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/12e81238-8f87-423f-a96b-4b1cadc123ce
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T06:37:25Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x8fe844b4743bbbed3ed7319467880cdcb9f38616a2ac220262cc2ce61dcbe1be","name":"Eef Barzelay","registered_at":"2026-06-15T19:59:29Z","symbol":"NIM0815992","token_address":"0xd4bb1029fa509c4422f16a6ddc6345a91bf279a7","type":"artist","uuid":"12e81238-8f87-423f-a96b-4b1cadc123ce"}
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 0x8fe844b4743bbbed3ed7319467880cdcb9f38616a2ac220262cc2ce61dcbe1be. Chain 2 (Bitcoin): anchored in block 953899 (2026-06-16T06:37:25Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/12e81238-8f87-423f-a96b-4b1cadc123ce.json and https://artists.proofprofile.net/proofs/artist/12e81238-8f87-423f-a96b-4b1cadc123ce.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T06:37:25Z
  text: {"copyright_id":"0x8fe844b4743bbbed3ed7319467880cdcb9f38616a2ac220262cc2ce61dcbe1be","name":"Eef Barzelay","registered_at":"2026-06-15T19:59:29Z","symbol":"NIM0815992","token_address":"0xd4bb1029fa509c4422f16a6ddc6345a91bf279a7","type":"artist","uuid":"12e81238-8f87-423f-a96b-4b1cadc123ce"}