Diogo Carvalho
type: MusicGroup
description: Diogo Carvalho (born 26 March 1988 in Coimbra) is a Portuguese swimmer. He made his Olympic debut at the 2008 Summer Olympics in the 200 metre individual medley. He competed in the 200 and 400 m indiv
popularity: 2
followers: 83
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x0db899f44d42305ebc89362d9aab23044c0e69cd6c86a0f00968e283664e96fb
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953922
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953922
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/1aef4568-0918-4776-98b8-15d5bd7be9b4.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/1aef4568-0918-4776-98b8-15d5bd7be9b4.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/1aef4568-0918-4776-98b8-15d5bd7be9b4
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T09:36:34Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x0db899f44d42305ebc89362d9aab23044c0e69cd6c86a0f00968e283664e96fb","name":"Diogo Carvalho","registered_at":"2026-06-15T22:58:55Z","symbol":"NIM0858779","token_address":"0x34208afaa94b40007fbef4b8defe77827e161b12","type":"artist","uuid":"1aef4568-0918-4776-98b8-15d5bd7be9b4"}
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 0x0db899f44d42305ebc89362d9aab23044c0e69cd6c86a0f00968e283664e96fb. Chain 2 (Bitcoin): anchored in block 953997 (2026-06-16T20:07:57Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1aef4568-0918-4776-98b8-15d5bd7be9b4.json and https://artists.proofprofile.net/proofs/artist/1aef4568-0918-4776-98b8-15d5bd7be9b4.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T20:07:57Z
  text: {"copyright_id":"0x0db899f44d42305ebc89362d9aab23044c0e69cd6c86a0f00968e283664e96fb","name":"Diogo Carvalho","registered_at":"2026-06-15T22:58:55Z","symbol":"NIM0858779","token_address":"0x34208afaa94b40007fbef4b8defe77827e161b12","type":"artist","uuid":"1aef4568-0918-4776-98b8-15d5bd7be9b4"}
album: Impressionism (Acoustic Guitar Solo)
  type: MusicAlbum
  date published: 2011-06-10
album: Duo Calavento
  type: MusicAlbum
  date published: 2013-10-10
album: Está Consumado
  type: MusicAlbum
  date published: 2016-07-11
album: Dromic Episodes
  type: MusicAlbum
  date published: 2021-02-10
album: Ink Stone
  type: MusicAlbum
  date published: 2022-03-14