Black Maria
type: MusicGroup
genre: brazilian rock
popularity: 4
followers: 703
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x03724ccf05e125d9ccd3eb089d5156ffdb48abb5bf580fee92b3fa4d3ace9767
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953888
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953888
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/0df7fea9-fdc1-47e8-abff-97cfaa27693b.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/0df7fea9-fdc1-47e8-abff-97cfaa27693b.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/0df7fea9-fdc1-47e8-abff-97cfaa27693b
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T04:55:23Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x03724ccf05e125d9ccd3eb089d5156ffdb48abb5bf580fee92b3fa4d3ace9767","name":"Black Maria","registered_at":"2026-06-15T18:28:16Z","symbol":"NIM0794235","token_address":"0xec4daf0b0c5a23603f831e0433585feef8d27dc0","type":"artist","uuid":"0df7fea9-fdc1-47e8-abff-97cfaa27693b"}
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03724ccf05e125d9ccd3eb089d5156ffdb48abb5bf580fee92b3fa4d3ace9767. Chain 2 (Bitcoin): anchored in block 953888 (2026-06-16T04:55:23Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0df7fea9-fdc1-47e8-abff-97cfaa27693b.json and https://artists.proofprofile.net/proofs/artist/0df7fea9-fdc1-47e8-abff-97cfaa27693b.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
  date published: 2026-06-16T04:55:23Z
  text: {"copyright_id":"0x03724ccf05e125d9ccd3eb089d5156ffdb48abb5bf580fee92b3fa4d3ace9767","name":"Black Maria","registered_at":"2026-06-15T18:28:16Z","symbol":"NIM0794235","token_address":"0xec4daf0b0c5a23603f831e0433585feef8d27dc0","type":"artist","uuid":"0df7fea9-fdc1-47e8-abff-97cfaa27693b"}
album: Black Maria
  type: MusicAlbum
  date published: 1997-01-01
album: Demorô
  type: MusicAlbum
  date published: 2000-01-01
album: Treze Vinte
  type: MusicAlbum
  date published: 2004-01-01
album: Ao Vivo Na Grande Garagem Que Grava
  type: MusicAlbum
  date published: 2008-01-01
album: Treze Vinte
  type: MusicAlbum
  date published: 2017-10-24
album: MAX PAIN (First Generation ver.)
  type: MusicAlbum
  date published: 2019-05-12
album: MAX PAIN (First Generation ver.)
  type: MusicAlbum
  date published: 2019-05-12
album: Never Ending Story
  type: MusicAlbum
  date published: 2021-08-28
album: Never Ending Story
  type: MusicAlbum
  date published: 2021-08-28
album: Tela Plana
  type: MusicAlbum
  date published: 2024-02-24
album: SHINE OF SHADOW
  type: MusicAlbum
  date published: 2024-06-12
album: SHINE OF SHADOW
  type: MusicAlbum
  date published: 2024-06-12