Chicago Underground Trio
type: MusicGroup
genre: avant-garde
genre: free jazz
popularity: 4
followers: 2069
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x3f148ee507a10dc9873333e9782a52bd4905c395675112fbcc32aafdd5be2e00
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954066
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954066
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/5a3452a8-df90-4063-9eba-e2c3726663bc.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/5a3452a8-df90-4063-9eba-e2c3726663bc.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/5a3452a8-df90-4063-9eba-e2c3726663bc
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:11:48Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x3f148ee507a10dc9873333e9782a52bd4905c395675112fbcc32aafdd5be2e00","name":"Chicago Underground Trio","registered_at":"2026-06-16T21:08:52Z","symbol":"NIM1176253","token_address":"0x8bff632f36d3a0942fff52e0c9e0ecb4d001871e","type":"artist","uuid":"5a3452a8-df90-4063-9eba-e2c3726663bc"}
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 0x3f148ee507a10dc9873333e9782a52bd4905c395675112fbcc32aafdd5be2e00. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5a3452a8-df90-4063-9eba-e2c3726663bc.json and https://artists.proofprofile.net/proofs/artist/5a3452a8-df90-4063-9eba-e2c3726663bc.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:11:48Z
  text: {"copyright_id":"0x3f148ee507a10dc9873333e9782a52bd4905c395675112fbcc32aafdd5be2e00","name":"Chicago Underground Trio","registered_at":"2026-06-16T21:08:52Z","symbol":"NIM1176253","token_address":"0x8bff632f36d3a0942fff52e0c9e0ecb4d001871e","type":"artist","uuid":"5a3452a8-df90-4063-9eba-e2c3726663bc"}
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  type: MusicAlbum
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  type: MusicAlbum
  date published: 2004-01-20
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  type: MusicAlbum
  date published: 2008-05-08