Carlos Drummond de Andrade
type: MusicGroup
description: Carlos Drummond de Andrade () (October 31, 1902 – August 17, 1987) was a Brazilian poet and writer, considered by some as the greatest Brazilian poet of all time. He has become something of a nationa
popularity: 2
followers: 868
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x0d6f9d33807b00da2a2fb5ee63d0c26cdc3868763974070eb0797309de861a35
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954742
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954742
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/fe4d7d61-8c4e-4722-b68a-85cc2b35cc65.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/fe4d7d61-8c4e-4722-b68a-85cc2b35cc65.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/fe4d7d61-8c4e-4722-b68a-85cc2b35cc65
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T20:46:40Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x0d6f9d33807b00da2a2fb5ee63d0c26cdc3868763974070eb0797309de861a35","name":"Carlos Drummond de Andrade","registered_at":"2026-06-21T18:14:35Z","symbol":"NIM1998020","token_address":"0xa48bfa51d7eb38d16c6640119c8bd3998ba367eb","type":"artist","uuid":"fe4d7d61-8c4e-4722-b68a-85cc2b35cc65"}
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 0x0d6f9d33807b00da2a2fb5ee63d0c26cdc3868763974070eb0797309de861a35. Chain 2 (Bitcoin): anchored in block 954742 (2026-06-21T20:46:40Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fe4d7d61-8c4e-4722-b68a-85cc2b35cc65.json and https://artists.proofprofile.net/proofs/artist/fe4d7d61-8c4e-4722-b68a-85cc2b35cc65.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T20:46:40Z
  text: {"copyright_id":"0x0d6f9d33807b00da2a2fb5ee63d0c26cdc3868763974070eb0797309de861a35","name":"Carlos Drummond de Andrade","registered_at":"2026-06-21T18:14:35Z","symbol":"NIM1998020","token_address":"0xa48bfa51d7eb38d16c6640119c8bd3998ba367eb","type":"artist","uuid":"fe4d7d61-8c4e-4722-b68a-85cc2b35cc65"}
album: Carlos Drummond de Andrade
  type: MusicAlbum
  date published: 1963
album: Antologia Poética - Carlos Drummond de Andrade
  type: MusicAlbum
  date published: 1963