Roberto Vargas
type: MusicGroup
description: Roberto Enrique Vargas Vélez (May 29, 1929 – May 27, 2014) was a Puerto Rican pitcher in Major League Baseball and Negro league baseball. Vargas played for the Chicago American Giants for one season i
popularity: 7
followers: 82
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x0223c72fd054b9ab8428c113c5fd5d49a0821faa26e7daab4f6df0d268e0e77a
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954065
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954065
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/51b3f459-1bc8-402f-abc2-2676e034521f.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/51b3f459-1bc8-402f-abc2-2676e034521f.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/51b3f459-1bc8-402f-abc2-2676e034521f
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:10:43Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x0223c72fd054b9ab8428c113c5fd5d49a0821faa26e7daab4f6df0d268e0e77a","name":"Roberto Vargas","registered_at":"2026-06-16T18:07:36Z","symbol":"NIM1132977","token_address":"0x459b7be73ebeedf587aa3f19a3c9ea6305967ef3","type":"artist","uuid":"51b3f459-1bc8-402f-abc2-2676e034521f"}
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 0x0223c72fd054b9ab8428c113c5fd5d49a0821faa26e7daab4f6df0d268e0e77a. 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/51b3f459-1bc8-402f-abc2-2676e034521f.json and https://artists.proofprofile.net/proofs/artist/51b3f459-1bc8-402f-abc2-2676e034521f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:11:48Z
  text: {"copyright_id":"0x0223c72fd054b9ab8428c113c5fd5d49a0821faa26e7daab4f6df0d268e0e77a","name":"Roberto Vargas","registered_at":"2026-06-16T18:07:36Z","symbol":"NIM1132977","token_address":"0x459b7be73ebeedf587aa3f19a3c9ea6305967ef3","type":"artist","uuid":"51b3f459-1bc8-402f-abc2-2676e034521f"}
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