Erich Ludwig
type: MusicGroup
description: Erich Ludwig (1 May 1879 – 14 May 1934) was a German rugby union player who competed in the 1900 Summer Olympics. He was a member of the German rugby union team, which won the silver medal. Germany w
popularity: 20
followers: 2
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xcd1cc0213ac57b618031516acac5d37a59322d0bfe5399c3bb30280340b13a24
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953827
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953827
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/d980a268-92dd-4c4e-843e-f47e3b04cf97.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/d980a268-92dd-4c4e-843e-f47e3b04cf97.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/d980a268-92dd-4c4e-843e-f47e3b04cf97
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-15T19:59:56Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xcd1cc0213ac57b618031516acac5d37a59322d0bfe5399c3bb30280340b13a24","name":"Erich Ludwig","registered_at":"2026-06-15T03:27:23Z","symbol":"NIM0667522","token_address":"0x82d2c55e4a6fab59827811b3e64f2928af952019","type":"artist","uuid":"d980a268-92dd-4c4e-843e-f47e3b04cf97"}
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 0xcd1cc0213ac57b618031516acac5d37a59322d0bfe5399c3bb30280340b13a24. Chain 2 (Bitcoin): anchored in block 953827 (2026-06-15T19:59:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d980a268-92dd-4c4e-843e-f47e3b04cf97.json and https://artists.proofprofile.net/proofs/artist/d980a268-92dd-4c4e-843e-f47e3b04cf97.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-15T19:59:56Z
  text: {"copyright_id":"0xcd1cc0213ac57b618031516acac5d37a59322d0bfe5399c3bb30280340b13a24","name":"Erich Ludwig","registered_at":"2026-06-15T03:27:23Z","symbol":"NIM0667522","token_address":"0x82d2c55e4a6fab59827811b3e64f2928af952019","type":"artist","uuid":"d980a268-92dd-4c4e-843e-f47e3b04cf97"}