Fantastic Four
type: MusicGroup
genre: philly soul
description: The Fantastic Four, often abbreviated as FF, is a superhero team appearing in American comic books published by Marvel Comics. The team debuted in The Fantastic Four #1 (cover-dated November 1961), he
popularity: 2
followers: 127
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x74a21f3c8ec2131d7ee01058a5bcb967aa574134350813eb72feb76b28c04a79
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953947
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953947
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/23dd97a3-5920-418b-b6e6-95ad87641142.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/23dd97a3-5920-418b-b6e6-95ad87641142.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/23dd97a3-5920-418b-b6e6-95ad87641142
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T13:14:26Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x74a21f3c8ec2131d7ee01058a5bcb967aa574134350813eb72feb76b28c04a79","name":"Fantastic Four","registered_at":"2026-06-16T01:58:53Z","symbol":"NIM0901768","token_address":"0x1e5305cfc889e15d9003227d725b96d87d3842f9","type":"artist","uuid":"23dd97a3-5920-418b-b6e6-95ad87641142"}
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 0x74a21f3c8ec2131d7ee01058a5bcb967aa574134350813eb72feb76b28c04a79. Chain 2 (Bitcoin): anchored in block 953947 (2026-06-16T13:14:26Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/23dd97a3-5920-418b-b6e6-95ad87641142.json and https://artists.proofprofile.net/proofs/artist/23dd97a3-5920-418b-b6e6-95ad87641142.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T13:14:26Z
  text: {"copyright_id":"0x74a21f3c8ec2131d7ee01058a5bcb967aa574134350813eb72feb76b28c04a79","name":"Fantastic Four","registered_at":"2026-06-16T01:58:53Z","symbol":"NIM0901768","token_address":"0x1e5305cfc889e15d9003227d725b96d87d3842f9","type":"artist","uuid":"23dd97a3-5920-418b-b6e6-95ad87641142"}
album: Alvin Stone (The Birth And Death Of A Gangster) / Night People
  type: MusicAlbum
  date published: 2001-05-22