Maria Sakellari
type: MusicGroup
genre: entehno
popularity: 2
followers: 129
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x3f37d2e5f04f57c0c43de9fe7b56212249f2e047de1f29fa6a0cb1ccc6243879
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953922
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953922
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/1b487608-875f-4e4c-a0ed-d74f42b49ed9.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/1b487608-875f-4e4c-a0ed-d74f42b49ed9.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/1b487608-875f-4e4c-a0ed-d74f42b49ed9
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T09:36:34Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x3f37d2e5f04f57c0c43de9fe7b56212249f2e047de1f29fa6a0cb1ccc6243879","name":"Maria Sakellari","registered_at":"2026-06-15T23:18:06Z","symbol":"NIM0863371","token_address":"0xcffa283136946b99f151a15e6ba43b8c15fca7d2","type":"artist","uuid":"1b487608-875f-4e4c-a0ed-d74f42b49ed9"}
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 0x3f37d2e5f04f57c0c43de9fe7b56212249f2e047de1f29fa6a0cb1ccc6243879. Chain 2 (Bitcoin): anchored in block 953923 (2026-06-16T09:51:37Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1b487608-875f-4e4c-a0ed-d74f42b49ed9.json and https://artists.proofprofile.net/proofs/artist/1b487608-875f-4e4c-a0ed-d74f42b49ed9.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T09:51:37Z
  text: {"copyright_id":"0x3f37d2e5f04f57c0c43de9fe7b56212249f2e047de1f29fa6a0cb1ccc6243879","name":"Maria Sakellari","registered_at":"2026-06-15T23:18:06Z","symbol":"NIM0863371","token_address":"0xcffa283136946b99f151a15e6ba43b8c15fca7d2","type":"artist","uuid":"1b487608-875f-4e4c-a0ed-d74f42b49ed9"}
album: Ores Siopis
  type: MusicAlbum
  date published: 2023-06-30
album: Stin Taratsa
  type: MusicAlbum
  date published: 2024-05-31