The Metroplexity Big Band
type: MusicGroup
genre: big band
genre: jazz
popularity: 14
followers: 370
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xde7f90737a163f88f4bb712c9ca1df2fd43d2be7e1a98cdb2508439acb2eb239
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953772
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953772
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/c91846ae-8ba9-40da-bfcc-75aa5a4cfd74.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/c91846ae-8ba9-40da-bfcc-75aa5a4cfd74.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/c91846ae-8ba9-40da-bfcc-75aa5a4cfd74
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-15T10:33:29Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xde7f90737a163f88f4bb712c9ca1df2fd43d2be7e1a98cdb2508439acb2eb239","name":"The Metroplexity Big Band","registered_at":"2026-06-15T01:38:50Z","symbol":"NIM0641609","token_address":"0x50706707f4e1bfaba2f168d2eb6f0ee71c926340","type":"artist","uuid":"c91846ae-8ba9-40da-bfcc-75aa5a4cfd74"}
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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde7f90737a163f88f4bb712c9ca1df2fd43d2be7e1a98cdb2508439acb2eb239. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c91846ae-8ba9-40da-bfcc-75aa5a4cfd74.json and https://artists.proofprofile.net/proofs/artist/c91846ae-8ba9-40da-bfcc-75aa5a4cfd74.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-15T11:57:35Z
  text: {"copyright_id":"0xde7f90737a163f88f4bb712c9ca1df2fd43d2be7e1a98cdb2508439acb2eb239","name":"The Metroplexity Big Band","registered_at":"2026-06-15T01:38:50Z","symbol":"NIM0641609","token_address":"0x50706707f4e1bfaba2f168d2eb6f0ee71c926340","type":"artist","uuid":"c91846ae-8ba9-40da-bfcc-75aa5a4cfd74"}