Martin Schäfer
type: MusicGroup
popularity: 8
followers: 5
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xcb7a1ef05f84ad8bfb24db46e09e2caa13362b8fc0e00b6f12bc8112b4844be8
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954066
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954066
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/6c17674e-05af-40eb-a3c7-7423bdbc2d9e.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/6c17674e-05af-40eb-a3c7-7423bdbc2d9e.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/6c17674e-05af-40eb-a3c7-7423bdbc2d9e
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:11:48Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xcb7a1ef05f84ad8bfb24db46e09e2caa13362b8fc0e00b6f12bc8112b4844be8","name":"Martin Schäfer","registered_at":"2026-06-17T03:19:53Z","symbol":"NIM1264754","token_address":"0xca6e3914314d17de7110d10ad4b81135b4266d21","type":"artist","uuid":"6c17674e-05af-40eb-a3c7-7423bdbc2d9e"}
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 0xcb7a1ef05f84ad8bfb24db46e09e2caa13362b8fc0e00b6f12bc8112b4844be8. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6c17674e-05af-40eb-a3c7-7423bdbc2d9e.json and https://artists.proofprofile.net/proofs/artist/6c17674e-05af-40eb-a3c7-7423bdbc2d9e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:11:48Z
  text: {"copyright_id":"0xcb7a1ef05f84ad8bfb24db46e09e2caa13362b8fc0e00b6f12bc8112b4844be8","name":"Martin Schäfer","registered_at":"2026-06-17T03:19:53Z","symbol":"NIM1264754","token_address":"0xca6e3914314d17de7110d10ad4b81135b4266d21","type":"artist","uuid":"6c17674e-05af-40eb-a3c7-7423bdbc2d9e"}
album: Zauber der Mundharmonika
  type: MusicAlbum
  date published: 2008-12-17
album: Zauber der Mundharmonika
  type: MusicAlbum
  date published: 2008-12-17