Hans Engelmann
type: MusicGroup
description: Hans Engelmann (16 June 1872 – 5 May 1914) was a composer of popular music in the late 19th and early 20th centuries. Although little is remembered of him today, his work was greatly appreciated in hi
popularity: 2
followers: 18
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xd6d40f650ff1ea43e64e7a58638396b0283873d26067e0bb791e6f13be80f692
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954705
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954705
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/ebb27068-048c-417c-a894-5b110175dbe3.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/ebb27068-048c-417c-a894-5b110175dbe3.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/ebb27068-048c-417c-a894-5b110175dbe3
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T13:42:37Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xd6d40f650ff1ea43e64e7a58638396b0283873d26067e0bb791e6f13be80f692","name":"Hans Engelmann","registered_at":"2026-06-21T11:21:00Z","symbol":"NIM1909961","token_address":"0x99ab39909bf24f0219241799ccd7ab2b86a36a75","type":"artist","uuid":"ebb27068-048c-417c-a894-5b110175dbe3"}
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 0xd6d40f650ff1ea43e64e7a58638396b0283873d26067e0bb791e6f13be80f692. Chain 2 (Bitcoin): anchored in block 954705 (2026-06-21T13:42:37Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ebb27068-048c-417c-a894-5b110175dbe3.json and https://artists.proofprofile.net/proofs/artist/ebb27068-048c-417c-a894-5b110175dbe3.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
  date published: 2026-06-21T13:42:37Z
  text: {"copyright_id":"0xd6d40f650ff1ea43e64e7a58638396b0283873d26067e0bb791e6f13be80f692","name":"Hans Engelmann","registered_at":"2026-06-21T11:21:00Z","symbol":"NIM1909961","token_address":"0x99ab39909bf24f0219241799ccd7ab2b86a36a75","type":"artist","uuid":"ebb27068-048c-417c-a894-5b110175dbe3"}
album: Halloween Dance
  type: MusicAlbum
  date published: 2025-10-05