Greg Hahn
type: MusicGroup
genre: comedy
description: Greg Hahn is an American stand-up comedian. He is a frequent guest on the nationally syndicated The Bob & Tom Show, and has several television appearances including Late Night with Conan O'Brien. He a
popularity: 4
followers: 889
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x4f8403aafcabca73de669929baab15c03d45b20b368a9332dd08b49af32fe9c5
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954717
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954717
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/f5335ca3-d464-4f4a-bb65-09fb96150640.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/f5335ca3-d464-4f4a-bb65-09fb96150640.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/f5335ca3-d464-4f4a-bb65-09fb96150640
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T15:47:51Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x4f8403aafcabca73de669929baab15c03d45b20b368a9332dd08b49af32fe9c5","name":"Greg Hahn","registered_at":"2026-06-21T15:02:35Z","symbol":"NIM1950597","token_address":"0xe9c670f49e9ec25bd8f618c290d0f2bb05559ccb","type":"artist","uuid":"f5335ca3-d464-4f4a-bb65-09fb96150640"}
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 0x4f8403aafcabca73de669929baab15c03d45b20b368a9332dd08b49af32fe9c5. Chain 2 (Bitcoin): anchored in block 954717 (2026-06-21T15:47:51Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f5335ca3-d464-4f4a-bb65-09fb96150640.json and https://artists.proofprofile.net/proofs/artist/f5335ca3-d464-4f4a-bb65-09fb96150640.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T15:47:51Z
  text: {"copyright_id":"0x4f8403aafcabca73de669929baab15c03d45b20b368a9332dd08b49af32fe9c5","name":"Greg Hahn","registered_at":"2026-06-21T15:02:35Z","symbol":"NIM1950597","token_address":"0xe9c670f49e9ec25bd8f618c290d0f2bb05559ccb","type":"artist","uuid":"f5335ca3-d464-4f4a-bb65-09fb96150640"}
album: Live from Hermosa Beach
  type: MusicAlbum
  date published: 2016-06-14
album: Live from Hermosa Beach
  type: MusicAlbum
  date published: 2016-06-14