Justin Lassen
type: MusicGroup
description: Justin Lassen (born August 27, 1981, in Denver, Colorado) was a composer, producer, multi-instrumentalist and remixer who has worked in the film, sound design, and video game industries. He died on Fe
popularity: 3
followers: 111
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xd2f18df50e6fea90046fc1788446674502638cca6c252da095c42b85644af24b
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953909
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953909
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/17e7d70e-0433-4a61-aa87-972574b516ee.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/17e7d70e-0433-4a61-aa87-972574b516ee.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/17e7d70e-0433-4a61-aa87-972574b516ee
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T07:53:13Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xd2f18df50e6fea90046fc1788446674502638cca6c252da095c42b85644af24b","name":"Justin Lassen","registered_at":"2026-06-15T22:08:17Z","symbol":"NIM0846693","token_address":"0x0949e353d61e0ad785c1e29087feaa4634989913","type":"artist","uuid":"17e7d70e-0433-4a61-aa87-972574b516ee"}
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 0xd2f18df50e6fea90046fc1788446674502638cca6c252da095c42b85644af24b. Chain 2 (Bitcoin): anchored in block 953909 (2026-06-16T07:53:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/17e7d70e-0433-4a61-aa87-972574b516ee.json and https://artists.proofprofile.net/proofs/artist/17e7d70e-0433-4a61-aa87-972574b516ee.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T07:53:13Z
  text: {"copyright_id":"0xd2f18df50e6fea90046fc1788446674502638cca6c252da095c42b85644af24b","name":"Justin Lassen","registered_at":"2026-06-15T22:08:17Z","symbol":"NIM0846693","token_address":"0x0949e353d61e0ad785c1e29087feaa4634989913","type":"artist","uuid":"17e7d70e-0433-4a61-aa87-972574b516ee"}