Walter Valdi
type: MusicGroup
genre: italian singer-songwriter
description: Walter Valdi (stage name of Walter Pinnetti; 20 August 1930 – 13 October 2003) was an Italian singer, songwriter, author and actor of several songs and theatrical pieces in Milanese Dialect. He was b
popularity: 3
followers: 470
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x16ecb5f1c0d79f544fa339997360d4c9bcd1af4469e39c5eaa91d479c988faf0
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954066
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954066
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/598505bd-cd88-4ec1-a368-37ecaf170724.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/598505bd-cd88-4ec1-a368-37ecaf170724.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/598505bd-cd88-4ec1-a368-37ecaf170724
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:11:48Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x16ecb5f1c0d79f544fa339997360d4c9bcd1af4469e39c5eaa91d479c988faf0","name":"Walter Valdi","registered_at":"2026-06-16T20:46:46Z","symbol":"NIM1170967","token_address":"0xebae6231ba2ce1c1379387818986c93ef32f8320","type":"artist","uuid":"598505bd-cd88-4ec1-a368-37ecaf170724"}
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 0x16ecb5f1c0d79f544fa339997360d4c9bcd1af4469e39c5eaa91d479c988faf0. 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/598505bd-cd88-4ec1-a368-37ecaf170724.json and https://artists.proofprofile.net/proofs/artist/598505bd-cd88-4ec1-a368-37ecaf170724.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:11:48Z
  text: {"copyright_id":"0x16ecb5f1c0d79f544fa339997360d4c9bcd1af4469e39c5eaa91d479c988faf0","name":"Walter Valdi","registered_at":"2026-06-16T20:46:46Z","symbol":"NIM1170967","token_address":"0xebae6231ba2ce1c1379387818986c93ef32f8320","type":"artist","uuid":"598505bd-cd88-4ec1-a368-37ecaf170724"}
album: Walter Valdi 1964
  type: MusicAlbum
  date published: 2014-12-19