Maria Stratigou
type: MusicGroup
genre: classical piano
genre: neoclassical
popularity: 14
followers: 92
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xb7c6fc5507e477ff0621b5da3273b6320d3d87ac90d5f7cb861e0b8ea4e8e3a8
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/b3c15da7-fb5c-4d23-a41b-6bd699c37848.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/b3c15da7-fb5c-4d23-a41b-6bd699c37848.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/b3c15da7-fb5c-4d23-a41b-6bd699c37848
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-15T07:48:25Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xb7c6fc5507e477ff0621b5da3273b6320d3d87ac90d5f7cb861e0b8ea4e8e3a8","name":"Maria Stratigou","registered_at":"2026-06-14T23:27:55Z","symbol":"NIM0610316","token_address":"0xe561a6e0461f91d759161ea6386326ce6a1125be","type":"artist","uuid":"b3c15da7-fb5c-4d23-a41b-6bd699c37848"}
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 0xb7c6fc5507e477ff0621b5da3273b6320d3d87ac90d5f7cb861e0b8ea4e8e3a8. Chain 2 (Bitcoin): anchored in block 953758 (2026-06-15T07:48:25Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b3c15da7-fb5c-4d23-a41b-6bd699c37848.json and https://artists.proofprofile.net/proofs/artist/b3c15da7-fb5c-4d23-a41b-6bd699c37848.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-15T07:48:25Z
  text: {"copyright_id":"0xb7c6fc5507e477ff0621b5da3273b6320d3d87ac90d5f7cb861e0b8ea4e8e3a8","name":"Maria Stratigou","registered_at":"2026-06-14T23:27:55Z","symbol":"NIM0610316","token_address":"0xe561a6e0461f91d759161ea6386326ce6a1125be","type":"artist","uuid":"b3c15da7-fb5c-4d23-a41b-6bd699c37848"}