Cotton Club
type: MusicGroup
description: thumb|Duke Ellington was one of the original Cotton Club orchestra leaders. thumb|Adelaide Hall, star of the Cotton Club thumb|Cab Calloway was another of the original Cotton Club performers. thumb|Et
popularity: 14
followers: 170
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x14f898573bca3678cb404fac96a65d826f861c93865013b14fb0db3526ee5acd
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953754
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953754
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/ad4416ba-9278-479b-952e-268889595be1.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/ad4416ba-9278-479b-952e-268889595be1.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/ad4416ba-9278-479b-952e-268889595be1
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-15T06:45:19Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x14f898573bca3678cb404fac96a65d826f861c93865013b14fb0db3526ee5acd","name":"Cotton Club","registered_at":"2026-06-14T22:47:12Z","symbol":"NIM0600601","token_address":"0xd927c2d79eda23c0154a12ede87e5260db7b1f60","type":"artist","uuid":"ad4416ba-9278-479b-952e-268889595be1"}
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 0x14f898573bca3678cb404fac96a65d826f861c93865013b14fb0db3526ee5acd. Chain 2 (Bitcoin): anchored in block 953754 (2026-06-15T06:45:19Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ad4416ba-9278-479b-952e-268889595be1.json and https://artists.proofprofile.net/proofs/artist/ad4416ba-9278-479b-952e-268889595be1.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-15T06:45:19Z
  text: {"copyright_id":"0x14f898573bca3678cb404fac96a65d826f861c93865013b14fb0db3526ee5acd","name":"Cotton Club","registered_at":"2026-06-14T22:47:12Z","symbol":"NIM0600601","token_address":"0xd927c2d79eda23c0154a12ede87e5260db7b1f60","type":"artist","uuid":"ad4416ba-9278-479b-952e-268889595be1"}
album: Cotton Club
  type: MusicAlbum
  date published: 1984-02-02
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