Bobby Van
type: MusicGroup
description: Robert Jack Stein (December 6, 1928 – July 31, 1980), known by his legalized stage name Bobby Van, was an actor and dancer, best known for his career on Broadway, in film musicals and television from
popularity: 8
followers: 81
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x50a65df5dded743382f9d319169273a3b8fc04d9ea5ac3199ce7cd6b01f55ed2
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953896
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953896
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/0fce3056-7caa-45d8-93c3-a737b62450cd.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/0fce3056-7caa-45d8-93c3-a737b62450cd.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/0fce3056-7caa-45d8-93c3-a737b62450cd
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T06:05:56Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x50a65df5dded743382f9d319169273a3b8fc04d9ea5ac3199ce7cd6b01f55ed2","name":"Bobby Van","registered_at":"2026-06-15T19:07:59Z","symbol":"NIM0803708","token_address":"0x2b23ace4f745982c9a9387cea2d2356b5e973bf9","type":"artist","uuid":"0fce3056-7caa-45d8-93c3-a737b62450cd"}
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 0x50a65df5dded743382f9d319169273a3b8fc04d9ea5ac3199ce7cd6b01f55ed2. Chain 2 (Bitcoin): anchored in block 953896 (2026-06-16T06:05:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0fce3056-7caa-45d8-93c3-a737b62450cd.json and https://artists.proofprofile.net/proofs/artist/0fce3056-7caa-45d8-93c3-a737b62450cd.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T06:05:56Z
  text: {"copyright_id":"0x50a65df5dded743382f9d319169273a3b8fc04d9ea5ac3199ce7cd6b01f55ed2","name":"Bobby Van","registered_at":"2026-06-15T19:07:59Z","symbol":"NIM0803708","token_address":"0x2b23ace4f745982c9a9387cea2d2356b5e973bf9","type":"artist","uuid":"0fce3056-7caa-45d8-93c3-a737b62450cd"}