John Alden Carpenter
type: MusicGroup
description: John Alden Carpenter (February 28, 1876 – April 26, 1951) was an American composer. Carpenter's compositional style was considered to be mainly "mildly modernistic and impressionistic"; many of his wo
popularity: 3
followers: 287
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x7b7dae9da223b08beaf06bdc8134aab8dbaddb958583a9538578b570d044e105
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954342
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954342
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/84f93853-85b4-46b7-aeb7-a7c41a3bbb87.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/84f93853-85b4-46b7-aeb7-a7c41a3bbb87.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/84f93853-85b4-46b7-aeb7-a7c41a3bbb87
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-19T03:22:39Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x7b7dae9da223b08beaf06bdc8134aab8dbaddb958583a9538578b570d044e105","name":"John Alden Carpenter","registered_at":"2026-06-17T12:01:15Z","symbol":"NIM1389092","token_address":"0x8c602c7f38b3403a6e71024b17139e805a54ab43","type":"artist","uuid":"84f93853-85b4-46b7-aeb7-a7c41a3bbb87"}
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 0x7b7dae9da223b08beaf06bdc8134aab8dbaddb958583a9538578b570d044e105. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/84f93853-85b4-46b7-aeb7-a7c41a3bbb87.json and https://artists.proofprofile.net/proofs/artist/84f93853-85b4-46b7-aeb7-a7c41a3bbb87.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-19T03:22:39Z
  text: {"copyright_id":"0x7b7dae9da223b08beaf06bdc8134aab8dbaddb958583a9538578b570d044e105","name":"John Alden Carpenter","registered_at":"2026-06-17T12:01:15Z","symbol":"NIM1389092","token_address":"0x8c602c7f38b3403a6e71024b17139e805a54ab43","type":"artist","uuid":"84f93853-85b4-46b7-aeb7-a7c41a3bbb87"}
album: Carpenter: Violin Sonata / String Quartet / Piano Quintet
  type: MusicAlbum
  date published: 2002-05-01