Avi Kaplan
type: MusicGroup
description: Avriel Benjamin Kaplan (born April 17, 1989) is an American singer-songwriter. He is known for being the former vocal bass of the a cappella group Pentatonix from 2011 to 2017. As a part of the grou
popularity: 31
followers: 891
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x689069b7f50c15a651ac333e4d0b4bd8e8c3dcdb465320573df0498c5c2ac14d
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953407
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953407
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/f12fd830-9791-4413-8ec7-f2463c382c7b.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/f12fd830-9791-4413-8ec7-f2463c382c7b.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/f12fd830-9791-4413-8ec7-f2463c382c7b
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-12T19:24:56Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x689069b7f50c15a651ac333e4d0b4bd8e8c3dcdb465320573df0498c5c2ac14d","name":"Avi Kaplan","registered_at":"2026-06-12T13:22:42Z","symbol":"NIM0310431","token_address":"0xa7d8866f75f91f8a5157ad19b72b8d8e087e40dd","type":"artist","uuid":"f12fd830-9791-4413-8ec7-f2463c382c7b"}
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 0x689069b7f50c15a651ac333e4d0b4bd8e8c3dcdb465320573df0498c5c2ac14d. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f12fd830-9791-4413-8ec7-f2463c382c7b.json and https://artists.proofprofile.net/proofs/artist/f12fd830-9791-4413-8ec7-f2463c382c7b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-12T19:24:56Z
  text: {"copyright_id":"0x689069b7f50c15a651ac333e4d0b4bd8e8c3dcdb465320573df0498c5c2ac14d","name":"Avi Kaplan","registered_at":"2026-06-12T13:22:42Z","symbol":"NIM0310431","token_address":"0xa7d8866f75f91f8a5157ad19b72b8d8e087e40dd","type":"artist","uuid":"f12fd830-9791-4413-8ec7-f2463c382c7b"}