3 Cohens
type: MusicGroup
popularity: 9
followers: 1173
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x557d4c8204460f8e99615282f26fdf608dc05823425c3f029700efbe6d8d0f01
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954728
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954728
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/f7ac1d4c-4275-4f80-8a5a-28d1e1d736ae.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/f7ac1d4c-4275-4f80-8a5a-28d1e1d736ae.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/f7ac1d4c-4275-4f80-8a5a-28d1e1d736ae
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T18:08:38Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x557d4c8204460f8e99615282f26fdf608dc05823425c3f029700efbe6d8d0f01","name":"3 Cohens","registered_at":"2026-06-21T15:44:45Z","symbol":"NIM1963235","token_address":"0x32ab9551e3f9208f6204589631a2881ea8278530","type":"artist","uuid":"f7ac1d4c-4275-4f80-8a5a-28d1e1d736ae"}
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 0x557d4c8204460f8e99615282f26fdf608dc05823425c3f029700efbe6d8d0f01. Chain 2 (Bitcoin): anchored in block 954728 (2026-06-21T18:08:38Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f7ac1d4c-4275-4f80-8a5a-28d1e1d736ae.json and https://artists.proofprofile.net/proofs/artist/f7ac1d4c-4275-4f80-8a5a-28d1e1d736ae.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T18:08:38Z
  text: {"copyright_id":"0x557d4c8204460f8e99615282f26fdf608dc05823425c3f029700efbe6d8d0f01","name":"3 Cohens","registered_at":"2026-06-21T15:44:45Z","symbol":"NIM1963235","token_address":"0x32ab9551e3f9208f6204589631a2881ea8278530","type":"artist","uuid":"f7ac1d4c-4275-4f80-8a5a-28d1e1d736ae"}
album: Braid
  type: MusicAlbum
  date published: 2007-11-20
album: Family
  type: MusicAlbum
  date published: 2011-10-11
album: Tightrope
  type: MusicAlbum
  date published: 2013-10-22
album: Shufla de Shufla (Live)
  type: MusicAlbum
  date published: 2025-02-28
album: Tiger Rag (Live)
  type: MusicAlbum
  date published: 2025-03-07
album: Lost & Found (Live)
  type: MusicAlbum
  date published: 2025-10-10