Wolfgang Leonhard
type: MusicGroup
description: Wolfgang Leonhard (16 April 1921 – 17 August 2014) was a German political author and historian of the Soviet Union, the German Democratic Republic and Communism. A German Communist whose family had f
popularity: 10
followers: 21
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x98c689cdf3e433d7d2ab8758752e2bdf121f12d18ec2b5cbc6580d5e6ad53930
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953877
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953877
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/079e7c29-279b-418e-bb4e-dbdcb88680d9.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/079e7c29-279b-418e-bb4e-dbdcb88680d9.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/079e7c29-279b-418e-bb4e-dbdcb88680d9
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T02:39:16Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x98c689cdf3e433d7d2ab8758752e2bdf121f12d18ec2b5cbc6580d5e6ad53930","name":"Wolfgang Leonhard","registered_at":"2026-06-15T16:24:27Z","symbol":"NIM0764687","token_address":"0x573e4f6b50bdd96af2a5c822d4686a53e5468bf8","type":"artist","uuid":"079e7c29-279b-418e-bb4e-dbdcb88680d9"}
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 0x98c689cdf3e433d7d2ab8758752e2bdf121f12d18ec2b5cbc6580d5e6ad53930. Chain 2 (Bitcoin): anchored in block 953877 (2026-06-16T02:39:16Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/079e7c29-279b-418e-bb4e-dbdcb88680d9.json and https://artists.proofprofile.net/proofs/artist/079e7c29-279b-418e-bb4e-dbdcb88680d9.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T02:39:16Z
  text: {"copyright_id":"0x98c689cdf3e433d7d2ab8758752e2bdf121f12d18ec2b5cbc6580d5e6ad53930","name":"Wolfgang Leonhard","registered_at":"2026-06-15T16:24:27Z","symbol":"NIM0764687","token_address":"0x573e4f6b50bdd96af2a5c822d4686a53e5468bf8","type":"artist","uuid":"079e7c29-279b-418e-bb4e-dbdcb88680d9"}
album: Die Revolution entlässt ihre Kinder
  type: MusicAlbum
  date published: 2006