Unto Mononen
type: MusicGroup
genre: iskelmä
genre: tango
description: Unto Uuno Mononen (23 October 1930 in Muolaa – 28 June 1968 in Somero) was a Finnish songwriter and musician. He is best known for his numerous tango compositions including the famous Finnish tango s
popularity: 2
followers: 273
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xa62c6622229cfc513138268b36c670d86ff874b2070487ecc6dd3651205f0296
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953846
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953846
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/01922bd3-e70f-4d90-96eb-429232fe048c.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/01922bd3-e70f-4d90-96eb-429232fe048c.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/01922bd3-e70f-4d90-96eb-429232fe048c
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-15T22:48:34Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xa62c6622229cfc513138268b36c670d86ff874b2070487ecc6dd3651205f0296","name":"Unto Mononen","registered_at":"2026-06-15T14:00:11Z","symbol":"NIM0730248","token_address":"0x4abc560082efd4b58d06ddf4daf44d078069b974","type":"artist","uuid":"01922bd3-e70f-4d90-96eb-429232fe048c"}
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 0xa62c6622229cfc513138268b36c670d86ff874b2070487ecc6dd3651205f0296. Chain 2 (Bitcoin): anchored in block 953846 (2026-06-15T22:48:34Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/01922bd3-e70f-4d90-96eb-429232fe048c.json and https://artists.proofprofile.net/proofs/artist/01922bd3-e70f-4d90-96eb-429232fe048c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-15T22:48:34Z
  text: {"copyright_id":"0xa62c6622229cfc513138268b36c670d86ff874b2070487ecc6dd3651205f0296","name":"Unto Mononen","registered_at":"2026-06-15T14:00:11Z","symbol":"NIM0730248","token_address":"0x4abc560082efd4b58d06ddf4daf44d078069b974","type":"artist","uuid":"01922bd3-e70f-4d90-96eb-429232fe048c"}