Maria Espada
type: MusicGroup
genre: opera
popularity: 7
followers: 259
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x8ac5b7211adb26ecea31c0122213a35575dfd9ee453aa6ed83862a20ac4279e9
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954032
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954032
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/3b5eebb0-941d-4493-879c-0606e54ad8d5.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/3b5eebb0-941d-4493-879c-0606e54ad8d5.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/3b5eebb0-941d-4493-879c-0606e54ad8d5
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T01:59:41Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x8ac5b7211adb26ecea31c0122213a35575dfd9ee453aa6ed83862a20ac4279e9","name":"Maria Espada","registered_at":"2026-06-16T10:12:11Z","symbol":"NIM1019567","token_address":"0xe11a003f31730c0bae4292aff5257f1a18ed238f","type":"artist","uuid":"3b5eebb0-941d-4493-879c-0606e54ad8d5"}
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 0x8ac5b7211adb26ecea31c0122213a35575dfd9ee453aa6ed83862a20ac4279e9. Chain 2 (Bitcoin): anchored in block 954032 (2026-06-17T01:59:41Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3b5eebb0-941d-4493-879c-0606e54ad8d5.json and https://artists.proofprofile.net/proofs/artist/3b5eebb0-941d-4493-879c-0606e54ad8d5.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T01:59:41Z
  text: {"copyright_id":"0x8ac5b7211adb26ecea31c0122213a35575dfd9ee453aa6ed83862a20ac4279e9","name":"Maria Espada","registered_at":"2026-06-16T10:12:11Z","symbol":"NIM1019567","token_address":"0xe11a003f31730c0bae4292aff5257f1a18ed238f","type":"artist","uuid":"3b5eebb0-941d-4493-879c-0606e54ad8d5"}
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  type: MusicAlbum
  date published: 2014-06-01
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  type: MusicAlbum
  date published: 2023-06-06
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  type: MusicAlbum
  date published: 2021-05-07
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  type: MusicAlbum
  date published: 2017
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  type: MusicAlbum
  date published: 2015-06-11
album: De Nebra: Esta Dulzura Amable - Sacred cantatas
  type: MusicAlbum
  date published: 2011-04-01