Abraham Brumberg
type: MusicGroup
description: Abraham Brumberg (; November 7, 1926 – January 26, 2008) was an American writer and editor. He wrote about the Soviet Union, Eastern Europe, and Jewish issues. He was the first editor of Problems of
popularity: 2
followers: 50
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xc3fd764af9a9f62cbc91891fa79e5e7b41b2c7b728bb5ae1e7d9a2b3bba2cd93
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953907
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953907
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/17a8258a-c53c-4091-a1dd-d8820863a983.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/17a8258a-c53c-4091-a1dd-d8820863a983.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/17a8258a-c53c-4091-a1dd-d8820863a983
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T07:39:24Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xc3fd764af9a9f62cbc91891fa79e5e7b41b2c7b728bb5ae1e7d9a2b3bba2cd93","name":"Abraham Brumberg","registered_at":"2026-06-15T21:47:39Z","symbol":"NIM0841787","token_address":"0x4e5ac642bb904fc77e953f9c624c6797e05adb01","type":"artist","uuid":"17a8258a-c53c-4091-a1dd-d8820863a983"}
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 0xc3fd764af9a9f62cbc91891fa79e5e7b41b2c7b728bb5ae1e7d9a2b3bba2cd93. Chain 2 (Bitcoin): anchored in block 953907 (2026-06-16T07:39:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/17a8258a-c53c-4091-a1dd-d8820863a983.json and https://artists.proofprofile.net/proofs/artist/17a8258a-c53c-4091-a1dd-d8820863a983.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T07:39:24Z
  text: {"copyright_id":"0xc3fd764af9a9f62cbc91891fa79e5e7b41b2c7b728bb5ae1e7d9a2b3bba2cd93","name":"Abraham Brumberg","registered_at":"2026-06-15T21:47:39Z","symbol":"NIM0841787","token_address":"0x4e5ac642bb904fc77e953f9c624c6797e05adb01","type":"artist","uuid":"17a8258a-c53c-4091-a1dd-d8820863a983"}