fifty grand
type: MusicGroup
description: thumb|300px|Ernest and Pauline Hemingway, Paris, 1927 "Fifty Grand" is a short story by Ernest Hemingway. It was first published in The Atlantic Monthly in 1927, and it appeared later that year in Hem
popularity: 2
followers: 3
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x57fd506b2dea0df1a0efc635718ccbf3a8cf21c1aa68b4345c10ea5ad04adfb5
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954667
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954667
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/de173488-55b5-4e65-a11a-29855281aeff.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/de173488-55b5-4e65-a11a-29855281aeff.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/de173488-55b5-4e65-a11a-29855281aeff
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T07:29:20Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x57fd506b2dea0df1a0efc635718ccbf3a8cf21c1aa68b4345c10ea5ad04adfb5","name":"fifty grand","registered_at":"2026-06-21T05:35:40Z","symbol":"NIM1835736","token_address":"0xeebf835068137d50fc4626ed99a2400eabf95b96","type":"artist","uuid":"de173488-55b5-4e65-a11a-29855281aeff"}
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 0x57fd506b2dea0df1a0efc635718ccbf3a8cf21c1aa68b4345c10ea5ad04adfb5. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/de173488-55b5-4e65-a11a-29855281aeff.json and https://artists.proofprofile.net/proofs/artist/de173488-55b5-4e65-a11a-29855281aeff.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T07:29:20Z
  text: {"copyright_id":"0x57fd506b2dea0df1a0efc635718ccbf3a8cf21c1aa68b4345c10ea5ad04adfb5","name":"fifty grand","registered_at":"2026-06-21T05:35:40Z","symbol":"NIM1835736","token_address":"0xeebf835068137d50fc4626ed99a2400eabf95b96","type":"artist","uuid":"de173488-55b5-4e65-a11a-29855281aeff"}