Madna Eúra
type: MusicGroup
popularity: 39
followers: 248
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x9e27cf4d19f04988c0e2767fadebfba97d8e43301f01f778e4bb0977c8d27179
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953407
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953407
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/6ce7591a-d4bc-4e15-a0da-9d57e9e71859.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/6ce7591a-d4bc-4e15-a0da-9d57e9e71859.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/6ce7591a-d4bc-4e15-a0da-9d57e9e71859
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-12T19:24:56Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x9e27cf4d19f04988c0e2767fadebfba97d8e43301f01f778e4bb0977c8d27179","name":"Madna Eúra","registered_at":"2026-06-11T23:52:03Z","symbol":"NIM0140156","token_address":"0x41682fe21a29a54a806266d5ff5dceab45698343","type":"artist","uuid":"6ce7591a-d4bc-4e15-a0da-9d57e9e71859"}
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 0x9e27cf4d19f04988c0e2767fadebfba97d8e43301f01f778e4bb0977c8d27179. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6ce7591a-d4bc-4e15-a0da-9d57e9e71859.json and https://artists.proofprofile.net/proofs/artist/6ce7591a-d4bc-4e15-a0da-9d57e9e71859.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-12T19:28:13Z
  text: {"copyright_id":"0x9e27cf4d19f04988c0e2767fadebfba97d8e43301f01f778e4bb0977c8d27179","name":"Madna Eúra","registered_at":"2026-06-11T23:52:03Z","symbol":"NIM0140156","token_address":"0x41682fe21a29a54a806266d5ff5dceab45698343","type":"artist","uuid":"6ce7591a-d4bc-4e15-a0da-9d57e9e71859"}
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