Happy Traum
type: MusicGroup
genre: ragtime
genre: roots rock
description: Harry Peter "Happy" Traum (May 9, 1938 – July 17, 2024) was an American folk musician who started playing around Washington Square in the late 1950s. He became a stalwart of the Greenwich Village musi
popularity: 9
followers: 1126
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xe68f64de13291ea0d1c5d50d71a1829c96f020e96d5c077f6fd41dfee8925e7a
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954631
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954631
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/cdd30f9a-f059-4b90-94cd-de9cce0a2a47.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/cdd30f9a-f059-4b90-94cd-de9cce0a2a47.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/cdd30f9a-f059-4b90-94cd-de9cce0a2a47
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T02:46:24Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xe68f64de13291ea0d1c5d50d71a1829c96f020e96d5c077f6fd41dfee8925e7a","name":"Happy Traum","registered_at":"2026-06-20T23:57:32Z","symbol":"NIM1754254","token_address":"0xe00707e07f51b8e54cd9e9ed239695e9ec27d8e3","type":"artist","uuid":"cdd30f9a-f059-4b90-94cd-de9cce0a2a47"}
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 0xe68f64de13291ea0d1c5d50d71a1829c96f020e96d5c077f6fd41dfee8925e7a. Chain 2 (Bitcoin): anchored in block 954631 (2026-06-21T02:46:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/cdd30f9a-f059-4b90-94cd-de9cce0a2a47.json and https://artists.proofprofile.net/proofs/artist/cdd30f9a-f059-4b90-94cd-de9cce0a2a47.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T02:46:24Z
  text: {"copyright_id":"0xe68f64de13291ea0d1c5d50d71a1829c96f020e96d5c077f6fd41dfee8925e7a","name":"Happy Traum","registered_at":"2026-06-20T23:57:32Z","symbol":"NIM1754254","token_address":"0xe00707e07f51b8e54cd9e9ed239695e9ec27d8e3","type":"artist","uuid":"cdd30f9a-f059-4b90-94cd-de9cce0a2a47"}
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