Eric Liu
type: MusicGroup
description: Eric P. Liu (; born 1968) is an American lawyer and CEO and co-founder of Citizen University, a non-profit organization promoting civic empowerment.Citizen University Liu served as Deputy Assistant to
popularity: 2
followers: 13
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x1391c79bbc9a19e636da23d05bc3451858b03e12998b3a44596ff7d787b6a952
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954500
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954500
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/9ba83687-527e-4b81-8a5e-e7d478b75beb.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/9ba83687-527e-4b81-8a5e-e7d478b75beb.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/9ba83687-527e-4b81-8a5e-e7d478b75beb
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T04:47:29Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x1391c79bbc9a19e636da23d05bc3451858b03e12998b3a44596ff7d787b6a952","name":"Eric Liu","registered_at":"2026-06-20T04:10:43Z","symbol":"NIM1507051","token_address":"0x5ed475ff0132adef0c4713af27b5b9b48a460ff4","type":"artist","uuid":"9ba83687-527e-4b81-8a5e-e7d478b75beb"}
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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1391c79bbc9a19e636da23d05bc3451858b03e12998b3a44596ff7d787b6a952. Chain 2 (Bitcoin): anchored in block 954500 (2026-06-20T04:47:29Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9ba83687-527e-4b81-8a5e-e7d478b75beb.json and https://artists.proofprofile.net/proofs/artist/9ba83687-527e-4b81-8a5e-e7d478b75beb.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T04:47:29Z
  text: {"copyright_id":"0x1391c79bbc9a19e636da23d05bc3451858b03e12998b3a44596ff7d787b6a952","name":"Eric Liu","registered_at":"2026-06-20T04:10:43Z","symbol":"NIM1507051","token_address":"0x5ed475ff0132adef0c4713af27b5b9b48a460ff4","type":"artist","uuid":"9ba83687-527e-4b81-8a5e-e7d478b75beb"}
album: Poems Of An Empty Letterbox
  type: MusicAlbum
  date published: 2025-05-24