Carl Engel
type: MusicGroup
description: Carl Engel (July 21, 1883 – May 6, 1944) was a French-born American pianist, composer, musicologist and publisher from Paris. He was also president of G. Schirmer, Inc., a writer on music for The Mus
popularity: 2
followers: 66
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x4a0d6070ad2944bd3ad808da616290af2221ccdf8ce96df98eea4f2726d0e118
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954638
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954638
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/d542cff8-cf42-4b2b-982e-3aa943abf41b.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/d542cff8-cf42-4b2b-982e-3aa943abf41b.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/d542cff8-cf42-4b2b-982e-3aa943abf41b
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T03:45:44Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x4a0d6070ad2944bd3ad808da616290af2221ccdf8ce96df98eea4f2726d0e118","name":"Carl Engel","registered_at":"2026-06-21T02:23:41Z","symbol":"NIM1790720","token_address":"0xc251585e552e4a9ef08581b44cae70498ff25c1b","type":"artist","uuid":"d542cff8-cf42-4b2b-982e-3aa943abf41b"}
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 0x4a0d6070ad2944bd3ad808da616290af2221ccdf8ce96df98eea4f2726d0e118. Chain 2 (Bitcoin): anchored in block 954638 (2026-06-21T03:45:44Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d542cff8-cf42-4b2b-982e-3aa943abf41b.json and https://artists.proofprofile.net/proofs/artist/d542cff8-cf42-4b2b-982e-3aa943abf41b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T03:45:44Z
  text: {"copyright_id":"0x4a0d6070ad2944bd3ad808da616290af2221ccdf8ce96df98eea4f2726d0e118","name":"Carl Engel","registered_at":"2026-06-21T02:23:41Z","symbol":"NIM1790720","token_address":"0xc251585e552e4a9ef08581b44cae70498ff25c1b","type":"artist","uuid":"d542cff8-cf42-4b2b-982e-3aa943abf41b"}
album: Carl Engel arr. Zimbalist Sea Shell LIVE (LIVE version)
  type: MusicAlbum
  date published: 2023-11-14