Leonard Gaskin
type: MusicGroup
description: Leonard Gaskin (August 25, 1920 – January 24, 2009) was an American jazz bassist born in New York City. Gaskin played on the early bebop scene at Minton's and Monroe's in New York in the early 1940s.
popularity: 2
followers: 16
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x02a827318334ed105901c895d033dd407acd0a8203524f04020e843cd6470478
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954066
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954066
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/5cbfd862-523f-4ec6-8fe1-0169ccbe1f0f.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/5cbfd862-523f-4ec6-8fe1-0169ccbe1f0f.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/5cbfd862-523f-4ec6-8fe1-0169ccbe1f0f
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:11:48Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x02a827318334ed105901c895d033dd407acd0a8203524f04020e843cd6470478","name":"Leonard Gaskin","registered_at":"2026-06-16T21:58:23Z","symbol":"NIM1188049","token_address":"0x276758c9685a40c6474bbec6b3601805ec8ada7d","type":"artist","uuid":"5cbfd862-523f-4ec6-8fe1-0169ccbe1f0f"}
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 0x02a827318334ed105901c895d033dd407acd0a8203524f04020e843cd6470478. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5cbfd862-523f-4ec6-8fe1-0169ccbe1f0f.json and https://artists.proofprofile.net/proofs/artist/5cbfd862-523f-4ec6-8fe1-0169ccbe1f0f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:11:48Z
  text: {"copyright_id":"0x02a827318334ed105901c895d033dd407acd0a8203524f04020e843cd6470478","name":"Leonard Gaskin","registered_at":"2026-06-16T21:58:23Z","symbol":"NIM1188049","token_address":"0x276758c9685a40c6474bbec6b3601805ec8ada7d","type":"artist","uuid":"5cbfd862-523f-4ec6-8fe1-0169ccbe1f0f"}
album: Times Change
  type: MusicAlbum
  date published: 2022-01-01