Herbert Schäfer
type: MusicGroup
description: Herbert Schäfer (16 August 1927 – 6 May 1991) was a German international footballer who played for Sportfreunde Siegen. He also competed in the 1952 Summer Olympics and in the 1956 Summer Olympics. He
popularity: 4
followers: 24
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x71829cfd2e020d3b663066a0e41148da52b2c8a68a9091324334608c41ae02c9
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954593
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954593
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/bdc7e7f4-f3ea-4ebb-a65d-b4a53ce1ddca.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/bdc7e7f4-f3ea-4ebb-a65d-b4a53ce1ddca.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/bdc7e7f4-f3ea-4ebb-a65d-b4a53ce1ddca
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T19:46:01Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x71829cfd2e020d3b663066a0e41148da52b2c8a68a9091324334608c41ae02c9","name":"Herbert Schäfer","registered_at":"2026-06-20T17:50:19Z","symbol":"NIM1672281","token_address":"0xd2f0c8bb78860cc5f870c22c79f1549fe2faa1bd","type":"artist","uuid":"bdc7e7f4-f3ea-4ebb-a65d-b4a53ce1ddca"}
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 0x71829cfd2e020d3b663066a0e41148da52b2c8a68a9091324334608c41ae02c9. Chain 2 (Bitcoin): anchored in block 954593 (2026-06-20T19:46:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/bdc7e7f4-f3ea-4ebb-a65d-b4a53ce1ddca.json and https://artists.proofprofile.net/proofs/artist/bdc7e7f4-f3ea-4ebb-a65d-b4a53ce1ddca.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T19:46:01Z
  text: {"copyright_id":"0x71829cfd2e020d3b663066a0e41148da52b2c8a68a9091324334608c41ae02c9","name":"Herbert Schäfer","registered_at":"2026-06-20T17:50:19Z","symbol":"NIM1672281","token_address":"0xd2f0c8bb78860cc5f870c22c79f1549fe2faa1bd","type":"artist","uuid":"bdc7e7f4-f3ea-4ebb-a65d-b4a53ce1ddca"}