Joana Marte
type: MusicGroup
genre: nova mpb
genre: tecnobrega
description: Joana Marte () is a Brazilian rock band founded in 2015 in Belém, Pará, by vocalist/guitarist Rubens Guilhon and drummer Bruno Azevedo. They consider themselves to be an alternative rock band, but the
popularity: 2
followers: 1272
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x34f55dc085a33a3d67bbfd5e7ad54a06c7062a75077cee576a15bb08e0495c45
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954513
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954513
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/9c2f8ef6-07be-4eb8-899d-318bfee46e3b.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/9c2f8ef6-07be-4eb8-899d-318bfee46e3b.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/9c2f8ef6-07be-4eb8-899d-318bfee46e3b
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T06:31:18Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x34f55dc085a33a3d67bbfd5e7ad54a06c7062a75077cee576a15bb08e0495c45","name":"Joana Marte","registered_at":"2026-06-20T04:22:07Z","symbol":"NIM1509614","token_address":"0xe74095fc598c85cf19f3f39d92032b026531b375","type":"artist","uuid":"9c2f8ef6-07be-4eb8-899d-318bfee46e3b"}
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 0x34f55dc085a33a3d67bbfd5e7ad54a06c7062a75077cee576a15bb08e0495c45. Chain 2 (Bitcoin): anchored in block 954513 (2026-06-20T06:31:18Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9c2f8ef6-07be-4eb8-899d-318bfee46e3b.json and https://artists.proofprofile.net/proofs/artist/9c2f8ef6-07be-4eb8-899d-318bfee46e3b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T06:31:18Z
  text: {"copyright_id":"0x34f55dc085a33a3d67bbfd5e7ad54a06c7062a75077cee576a15bb08e0495c45","name":"Joana Marte","registered_at":"2026-06-20T04:22:07Z","symbol":"NIM1509614","token_address":"0xe74095fc598c85cf19f3f39d92032b026531b375","type":"artist","uuid":"9c2f8ef6-07be-4eb8-899d-318bfee46e3b"}
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