Isaac Levi
type: MusicGroup
description: Isaac Levi (June 30, 1930 – December 25, 2018) was an American philosopher who served as the John Dewey Professor of Philosophy at Columbia University. He is noted for his work in epistemology and dec
popularity: 2
followers: 12
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x0a504d16aa2f2891243dd10b8a06c6f321e162040020607af386063cfe7b50e2
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953955
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953955
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/245bb170-2fa1-4c93-b24f-b128acf30efc.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/245bb170-2fa1-4c93-b24f-b128acf30efc.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/245bb170-2fa1-4c93-b24f-b128acf30efc
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T14:29:53Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x0a504d16aa2f2891243dd10b8a06c6f321e162040020607af386063cfe7b50e2","name":"Isaac Levi","registered_at":"2026-06-16T02:30:41Z","symbol":"NIM0909362","token_address":"0x28f5b28287645a903729a2f2aea58a3ec2302e6e","type":"artist","uuid":"245bb170-2fa1-4c93-b24f-b128acf30efc"}
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a504d16aa2f2891243dd10b8a06c6f321e162040020607af386063cfe7b50e2. Chain 2 (Bitcoin): anchored in block 953955 (2026-06-16T14:29:53Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/245bb170-2fa1-4c93-b24f-b128acf30efc.json and https://artists.proofprofile.net/proofs/artist/245bb170-2fa1-4c93-b24f-b128acf30efc.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T14:29:53Z
  text: {"copyright_id":"0x0a504d16aa2f2891243dd10b8a06c6f321e162040020607af386063cfe7b50e2","name":"Isaac Levi","registered_at":"2026-06-16T02:30:41Z","symbol":"NIM0909362","token_address":"0x28f5b28287645a903729a2f2aea58a3ec2302e6e","type":"artist","uuid":"245bb170-2fa1-4c93-b24f-b128acf30efc"}
album: Do You Feel?
  type: MusicAlbum
  date published: 2025-02-14