SPEAKEASY
type: MusicGroup
description: thumb|upright=1.25|New York's 21 Club was a Prohibition-era speakeasy. A speakeasy, also called a beer flat, blind pig, or blind tiger, was an illicit establishment that sold alcoholic beverages. The
popularity: 8
followers: 91
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x4c98df58f040d4b1c6ec4b1b6fb00bb2f24585b09c6b2b6bc72026fa4a01a655
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954025
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954025
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/386bf865-7953-49c0-9ae6-c8d677a6e654.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/386bf865-7953-49c0-9ae6-c8d677a6e654.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/386bf865-7953-49c0-9ae6-c8d677a6e654
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T00:32:47Z
additional property: OTSCanonicalRecord
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 0x4c98df58f040d4b1c6ec4b1b6fb00bb2f24585b09c6b2b6bc72026fa4a01a655. Chain 2 (Bitcoin): anchored in block 954025 (2026-06-17T00:32:47Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/386bf865-7953-49c0-9ae6-c8d677a6e654.json and https://artists.proofprofile.net/proofs/artist/386bf865-7953-49c0-9ae6-c8d677a6e654.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T00:32:47Z
album: Easy Goodbye
  type: MusicAlbum
  date published: 2025-03-14
album: Chasing Kites
  type: MusicAlbum
  date published: 2025-05-09
album: Blue Skies
  type: MusicAlbum
  date published: 2025-07-11