Juan Carlos Tolosa
type: MusicGroup
genre: singer-songwriter
genre: tango
description: 200px|thumb|Juan Carlos Tolosa, 2009|alt=Headshot of Juan Carlos Tolosa Juan Carlos Tolosa (born in Córdoba, 2 October 1966) is an Argentinian composer, pianist, and conductor. Studies Juan Carlos T
popularity: 6
followers: 108
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x240d0ee80610c9e1c227444d2df202269159dfc48ff8f27f731df8fc00494d53
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/4a490114-fe22-414b-988c-aae48dd2c0fd.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/4a490114-fe22-414b-988c-aae48dd2c0fd.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/4a490114-fe22-414b-988c-aae48dd2c0fd
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:10:43Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x240d0ee80610c9e1c227444d2df202269159dfc48ff8f27f731df8fc00494d53","name":"Juan Carlos Tolosa","registered_at":"2026-06-16T15:47:31Z","symbol":"NIM1099566","token_address":"0x8b363348fb4278d91621700feab457ba2b4e3cd4","type":"artist","uuid":"4a490114-fe22-414b-988c-aae48dd2c0fd"}
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 0x240d0ee80610c9e1c227444d2df202269159dfc48ff8f27f731df8fc00494d53. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4a490114-fe22-414b-988c-aae48dd2c0fd.json and https://artists.proofprofile.net/proofs/artist/4a490114-fe22-414b-988c-aae48dd2c0fd.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:10:43Z
  text: {"copyright_id":"0x240d0ee80610c9e1c227444d2df202269159dfc48ff8f27f731df8fc00494d53","name":"Juan Carlos Tolosa","registered_at":"2026-06-16T15:47:31Z","symbol":"NIM1099566","token_address":"0x8b363348fb4278d91621700feab457ba2b4e3cd4","type":"artist","uuid":"4a490114-fe22-414b-988c-aae48dd2c0fd"}