Leo Long
type: MusicGroup
description: Leo Evan Long is a former competitive American javelin thrower and track and field coach. Early life and competitive career Long was born in Oklahoma, traveled to California during the Great Depressi
popularity: 15
followers: 170
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x491da5ae42c52f7a06fa19d5b07c8b03882ab5a373a3999ecca5af988189d149
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953754
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953754
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/adb3583c-fd10-44a9-af64-65b09010900e.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/adb3583c-fd10-44a9-af64-65b09010900e.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/adb3583c-fd10-44a9-af64-65b09010900e
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-15T06:45:19Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x491da5ae42c52f7a06fa19d5b07c8b03882ab5a373a3999ecca5af988189d149","name":"Leo Long","registered_at":"2026-06-14T22:43:03Z","symbol":"NIM0599618","token_address":"0x60e4bd8515ee094d7eb1d075f06e2d3b189ab449","type":"artist","uuid":"adb3583c-fd10-44a9-af64-65b09010900e"}
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 0x491da5ae42c52f7a06fa19d5b07c8b03882ab5a373a3999ecca5af988189d149. Chain 2 (Bitcoin): anchored in block 953754 (2026-06-15T06:45:19Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/adb3583c-fd10-44a9-af64-65b09010900e.json and https://artists.proofprofile.net/proofs/artist/adb3583c-fd10-44a9-af64-65b09010900e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-15T06:45:19Z
  text: {"copyright_id":"0x491da5ae42c52f7a06fa19d5b07c8b03882ab5a373a3999ecca5af988189d149","name":"Leo Long","registered_at":"2026-06-14T22:43:03Z","symbol":"NIM0599618","token_address":"0x60e4bd8515ee094d7eb1d075f06e2d3b189ab449","type":"artist","uuid":"adb3583c-fd10-44a9-af64-65b09010900e"}