Madu Nogueira
type: MusicGroup
popularity: 13
followers: 30
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x90e13e7bcc2021936acd615015409163e68f8e45d06038a746d58ded7048a17b
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/b4898d17-4caf-4188-8d7c-4a0045678431.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/b4898d17-4caf-4188-8d7c-4a0045678431.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/b4898d17-4caf-4188-8d7c-4a0045678431
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-15T07:48:25Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x90e13e7bcc2021936acd615015409163e68f8e45d06038a746d58ded7048a17b","name":"Madu Nogueira","registered_at":"2026-06-14T23:28:25Z","symbol":"NIM0610432","token_address":"0xd736886c2e22d98b3e3251187ab0890c45420f8f","type":"artist","uuid":"b4898d17-4caf-4188-8d7c-4a0045678431"}
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 0x90e13e7bcc2021936acd615015409163e68f8e45d06038a746d58ded7048a17b. Chain 2 (Bitcoin): anchored in block 953770 (2026-06-15T09:50:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b4898d17-4caf-4188-8d7c-4a0045678431.json and https://artists.proofprofile.net/proofs/artist/b4898d17-4caf-4188-8d7c-4a0045678431.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-15T09:50:11Z
  text: {"copyright_id":"0x90e13e7bcc2021936acd615015409163e68f8e45d06038a746d58ded7048a17b","name":"Madu Nogueira","registered_at":"2026-06-14T23:28:25Z","symbol":"NIM0610432","token_address":"0xd736886c2e22d98b3e3251187ab0890c45420f8f","type":"artist","uuid":"b4898d17-4caf-4188-8d7c-4a0045678431"}
album: Tu És o Sol
  type: MusicAlbum
  date published: 2025-08-05