Philipp Gropper
type: MusicGroup
genre: avant-garde
description: thumb|Philipp Gropper (Aarhus, Denmark, 2016) Philipp Gropper (born 1978 in West-Berlin) is a German composer and saxophonist of jazz and of the modern creative style. Biography From 1999 to 2006,
popularity: 2
followers: 168
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x969b4fb059df021a21f4687efaeddb69ad3b6b842ac7b49ca828158016988ea6
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/d3ad28c4-e63e-4fa8-87e9-6c0436c6e15e.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/d3ad28c4-e63e-4fa8-87e9-6c0436c6e15e.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/d3ad28c4-e63e-4fa8-87e9-6c0436c6e15e
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T03:45:44Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x969b4fb059df021a21f4687efaeddb69ad3b6b842ac7b49ca828158016988ea6","name":"Philipp Gropper","registered_at":"2026-06-21T02:17:41Z","symbol":"NIM1788688","token_address":"0xb81ff677fcced3db8ca0bb744573307c14e6c139","type":"artist","uuid":"d3ad28c4-e63e-4fa8-87e9-6c0436c6e15e"}
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 0x969b4fb059df021a21f4687efaeddb69ad3b6b842ac7b49ca828158016988ea6. 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/d3ad28c4-e63e-4fa8-87e9-6c0436c6e15e.json and https://artists.proofprofile.net/proofs/artist/d3ad28c4-e63e-4fa8-87e9-6c0436c6e15e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T03:45:44Z
  text: {"copyright_id":"0x969b4fb059df021a21f4687efaeddb69ad3b6b842ac7b49ca828158016988ea6","name":"Philipp Gropper","registered_at":"2026-06-21T02:17:41Z","symbol":"NIM1788688","token_address":"0xb81ff677fcced3db8ca0bb744573307c14e6c139","type":"artist","uuid":"d3ad28c4-e63e-4fa8-87e9-6c0436c6e15e"}
album: Riot
  type: MusicAlbum
  date published: 2016-10-07