Catalina Castaño
type: MusicGroup
description: Catalina Castaño Álvarez (; born 7 July 1979) is a Colombian former tennis player. Her highest singles ranking is world No. 35 which she achieved July 2006. In her career, she won ten titles on the I
popularity: 31
followers: 9
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x8c7dd85269945686b29690ce108a5da6fc66cf47b5130fe6c230bc799abfff9f
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953407
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953407
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/6712c5f4-2401-4714-8a08-b4ac9aa30806.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/6712c5f4-2401-4714-8a08-b4ac9aa30806.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/6712c5f4-2401-4714-8a08-b4ac9aa30806
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-12T19:24:56Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x8c7dd85269945686b29690ce108a5da6fc66cf47b5130fe6c230bc799abfff9f","name":"Catalina Castaño","registered_at":"2026-06-11T23:12:21Z","symbol":"NIM0132687","token_address":"0x03f7e8cad19435a993de2c16f6fe09f9fcc36b62","type":"artist","uuid":"6712c5f4-2401-4714-8a08-b4ac9aa30806"}
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 0x8c7dd85269945686b29690ce108a5da6fc66cf47b5130fe6c230bc799abfff9f. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6712c5f4-2401-4714-8a08-b4ac9aa30806.json and https://artists.proofprofile.net/proofs/artist/6712c5f4-2401-4714-8a08-b4ac9aa30806.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-12T19:24:56Z
  text: {"copyright_id":"0x8c7dd85269945686b29690ce108a5da6fc66cf47b5130fe6c230bc799abfff9f","name":"Catalina Castaño","registered_at":"2026-06-11T23:12:21Z","symbol":"NIM0132687","token_address":"0x03f7e8cad19435a993de2c16f6fe09f9fcc36b62","type":"artist","uuid":"6712c5f4-2401-4714-8a08-b4ac9aa30806"}