Castanheira
type: MusicGroup
popularity: 6
followers: 592
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x4977d08e8cc3f0f53c44cf35419f40e3c4876ea1f75bb3b2f031563374d2ae04
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954667
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954667
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/c1f52283-9f0b-443f-863d-a1f91b894532.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/c1f52283-9f0b-443f-863d-a1f91b894532.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/c1f52283-9f0b-443f-863d-a1f91b894532
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T07:29:20Z
additional property: OTSCanonicalRecord
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 0x4977d08e8cc3f0f53c44cf35419f40e3c4876ea1f75bb3b2f031563374d2ae04. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c1f52283-9f0b-443f-863d-a1f91b894532.json and https://artists.proofprofile.net/proofs/artist/c1f52283-9f0b-443f-863d-a1f91b894532.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T07:29:20Z
album: Um Dia de Cada Vez
  type: MusicAlbum
  date published: 2021-10-29
album: Aonde Estou?
  type: MusicAlbum
  date published: 2021-12-11
album: Tô por Aí
  type: MusicAlbum
  date published: 2022-02-11
album: Saudade
  type: MusicAlbum
  date published: 2022-06-03
album: Amarelo - Atari Punk Session (Ao Vivo)
  type: MusicAlbum
  date published: 2022-10-21
album: Rosa
  type: MusicAlbum
  date published: 2023-04-20
album: Pense
  type: MusicAlbum
  date published: 2023-09-08