Walter Bergman
type: MusicGroup
description: Walter Bergman (born Walter Bergmann; 30 July 1913 – 1986) was a South African numismatist. Bergman was born in Königsberg (now Kaliningrad, Russia), East Prussia, Germany. In 1933, his family fled N
popularity: 2
followers: 36
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xaebd027c5edf668d1d672fa06a5adb42767ff7dcc0c81757a0f3939695908c06
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954549
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954549
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/a8e8ac2d-8596-4f64-80e1-5d8fd02f8bfe.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/a8e8ac2d-8596-4f64-80e1-5d8fd02f8bfe.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/a8e8ac2d-8596-4f64-80e1-5d8fd02f8bfe
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T10:56:20Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xaebd027c5edf668d1d672fa06a5adb42767ff7dcc0c81757a0f3939695908c06","name":"Walter Bergman","registered_at":"2026-06-20T08:23:47Z","symbol":"NIM1568362","token_address":"0xfebb29dd478839e59159c63d5a92868ea02bf234","type":"artist","uuid":"a8e8ac2d-8596-4f64-80e1-5d8fd02f8bfe"}
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 0xaebd027c5edf668d1d672fa06a5adb42767ff7dcc0c81757a0f3939695908c06. Chain 2 (Bitcoin): anchored in block 954549 (2026-06-20T10:56:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a8e8ac2d-8596-4f64-80e1-5d8fd02f8bfe.json and https://artists.proofprofile.net/proofs/artist/a8e8ac2d-8596-4f64-80e1-5d8fd02f8bfe.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T10:56:20Z
  text: {"copyright_id":"0xaebd027c5edf668d1d672fa06a5adb42767ff7dcc0c81757a0f3939695908c06","name":"Walter Bergman","registered_at":"2026-06-20T08:23:47Z","symbol":"NIM1568362","token_address":"0xfebb29dd478839e59159c63d5a92868ea02bf234","type":"artist","uuid":"a8e8ac2d-8596-4f64-80e1-5d8fd02f8bfe"}