Ubre Blanca
type: MusicGroup
genre: synthwave
description: Ubre Blanca (1972–1985) was a cow in Cuba known for her prodigious milk production. The cow, along with the "Cordón de La Habana" coffee plantations, the Voisin pasture system, and the microjet irrig
popularity: 4
followers: 808
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xc6742dda69eea8764be7bc9d9b75d105f75e998ea9ccf9876122f32ed21b6e56
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953982
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953982
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/2d1a3598-3eb4-4d27-8b97-b9af76817d95.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/2d1a3598-3eb4-4d27-8b97-b9af76817d95.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/2d1a3598-3eb4-4d27-8b97-b9af76817d95
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T17:42:23Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xc6742dda69eea8764be7bc9d9b75d105f75e998ea9ccf9876122f32ed21b6e56","name":"Ubre Blanca","registered_at":"2026-06-16T05:13:20Z","symbol":"NIM0948204","token_address":"0xcd175bcc37d00032b684603c6c085ecf15b67433","type":"artist","uuid":"2d1a3598-3eb4-4d27-8b97-b9af76817d95"}
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 0xc6742dda69eea8764be7bc9d9b75d105f75e998ea9ccf9876122f32ed21b6e56. Chain 2 (Bitcoin): anchored in block 954014 (2026-06-16T22:46:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2d1a3598-3eb4-4d27-8b97-b9af76817d95.json and https://artists.proofprofile.net/proofs/artist/2d1a3598-3eb4-4d27-8b97-b9af76817d95.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T22:46:20Z
  text: {"copyright_id":"0xc6742dda69eea8764be7bc9d9b75d105f75e998ea9ccf9876122f32ed21b6e56","name":"Ubre Blanca","registered_at":"2026-06-16T05:13:20Z","symbol":"NIM0948204","token_address":"0xcd175bcc37d00032b684603c6c085ecf15b67433","type":"artist","uuid":"2d1a3598-3eb4-4d27-8b97-b9af76817d95"}
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