Alan Mandell
type: MusicGroup
description: Alan Mandell (born Albert Mandell on 27 December 1927) is a Canadian-American actor known for playing Rabbi Marshak in the Coen Brothers' 2009 film A Serious Man. With several decades of experience as
popularity: 10
followers: 79
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xb788aa32cc2439701411a87de54e281af6421bb30173ef28b1a17cace1192d4f
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954650
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954650
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/d97c1fea-f4fd-4cec-8a70-dc5255590ca5.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/d97c1fea-f4fd-4cec-8a70-dc5255590ca5.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/d97c1fea-f4fd-4cec-8a70-dc5255590ca5
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T04:51:12Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xb788aa32cc2439701411a87de54e281af6421bb30173ef28b1a17cace1192d4f","name":"Alan Mandell","registered_at":"2026-06-21T03:54:05Z","symbol":"NIM1810946","token_address":"0xccf693a5a5459c7aa7cbaf7deea0034d7f4f21a7","type":"artist","uuid":"d97c1fea-f4fd-4cec-8a70-dc5255590ca5"}
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 0xb788aa32cc2439701411a87de54e281af6421bb30173ef28b1a17cace1192d4f. Chain 2 (Bitcoin): anchored in block 954650 (2026-06-21T04:51:12Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d97c1fea-f4fd-4cec-8a70-dc5255590ca5.json and https://artists.proofprofile.net/proofs/artist/d97c1fea-f4fd-4cec-8a70-dc5255590ca5.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T04:51:12Z
  text: {"copyright_id":"0xb788aa32cc2439701411a87de54e281af6421bb30173ef28b1a17cace1192d4f","name":"Alan Mandell","registered_at":"2026-06-21T03:54:05Z","symbol":"NIM1810946","token_address":"0xccf693a5a5459c7aa7cbaf7deea0034d7f4f21a7","type":"artist","uuid":"d97c1fea-f4fd-4cec-8a70-dc5255590ca5"}