Válvera
type: MusicGroup
genre: groove metal
genre: thrash metal
popularity: 11
followers: 1770
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x8d56d93a39cc914166fe95e6d646860ae9ebfdc4a96109d6822ecadbd5ae1fcd
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953758
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953758
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/b52bf4ce-a253-4b93-9e1d-e9b8b3fc8d37.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/b52bf4ce-a253-4b93-9e1d-e9b8b3fc8d37.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/b52bf4ce-a253-4b93-9e1d-e9b8b3fc8d37
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-15T07:48:25Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x8d56d93a39cc914166fe95e6d646860ae9ebfdc4a96109d6822ecadbd5ae1fcd","name":"Válvera","registered_at":"2026-06-14T23:39:59Z","symbol":"NIM0613189","token_address":"0x650ef7fc3522a8d92947f5acb6f18449d1bbc3d3","type":"artist","uuid":"b52bf4ce-a253-4b93-9e1d-e9b8b3fc8d37"}
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 0x8d56d93a39cc914166fe95e6d646860ae9ebfdc4a96109d6822ecadbd5ae1fcd. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b52bf4ce-a253-4b93-9e1d-e9b8b3fc8d37.json and https://artists.proofprofile.net/proofs/artist/b52bf4ce-a253-4b93-9e1d-e9b8b3fc8d37.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-15T11:57:35Z
  text: {"copyright_id":"0x8d56d93a39cc914166fe95e6d646860ae9ebfdc4a96109d6822ecadbd5ae1fcd","name":"Válvera","registered_at":"2026-06-14T23:39:59Z","symbol":"NIM0613189","token_address":"0x650ef7fc3522a8d92947f5acb6f18449d1bbc3d3","type":"artist","uuid":"b52bf4ce-a253-4b93-9e1d-e9b8b3fc8d37"}
album: Cidade em Caos
  type: MusicAlbum
  date published: 2015-01-08
album: Cidade em Caos
  type: MusicAlbum
  date published: 2015-08-01
album: Demons of War
  type: MusicAlbum
  date published: 2017-10-27
album: Back to Hell
  type: MusicAlbum
  date published: 2017-12-12
album: Bringer Of Evil
  type: MusicAlbum
  date published: 2019-03-15
album: Glow of Death
  type: MusicAlbum
  date published: 2020-04-17
album: Glow of Death
  type: MusicAlbum
  date published: 2020-07-10
album: Cycle of Disaster
  type: MusicAlbum
  date published: 2020-08-28
album: Cycle of Disaster
  type: MusicAlbum
  date published: 2020-08-28
album: Black Rain
  type: MusicAlbum
  date published: 2022-05-27
album: Reckoning Has Begun
  type: MusicAlbum
  date published: 2024-12-13
album: Crawl to the Dawn
  type: MusicAlbum
  date published: 2025-05-30