Spyros Sakkas
type: MusicGroup
popularity: 6
followers: 104
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x63f1c4bdd1b02dec822a5f74d747be5274c4911e3aa9198960b09e396da180fc
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954066
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954066
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/66f7559e-d8c9-4d50-ad3c-8bcc621877f2.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/66f7559e-d8c9-4d50-ad3c-8bcc621877f2.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/66f7559e-d8c9-4d50-ad3c-8bcc621877f2
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:11:48Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x63f1c4bdd1b02dec822a5f74d747be5274c4911e3aa9198960b09e396da180fc","name":"Spyros Sakkas","registered_at":"2026-06-17T01:33:48Z","symbol":"NIM1239445","token_address":"0xe54cce1a9fb31fa7fd83f1c1d8eccff885c0e147","type":"artist","uuid":"66f7559e-d8c9-4d50-ad3c-8bcc621877f2"}
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 0x63f1c4bdd1b02dec822a5f74d747be5274c4911e3aa9198960b09e396da180fc. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/66f7559e-d8c9-4d50-ad3c-8bcc621877f2.json and https://artists.proofprofile.net/proofs/artist/66f7559e-d8c9-4d50-ad3c-8bcc621877f2.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:11:48Z
  text: {"copyright_id":"0x63f1c4bdd1b02dec822a5f74d747be5274c4911e3aa9198960b09e396da180fc","name":"Spyros Sakkas","registered_at":"2026-06-17T01:33:48Z","symbol":"NIM1239445","token_address":"0xe54cce1a9fb31fa7fd83f1c1d8eccff885c0e147","type":"artist","uuid":"66f7559e-d8c9-4d50-ad3c-8bcc621877f2"}
album: Dyo Naftika Tragoudia (O Kyklos Tou C.N.S, To Katarameno Fidi)
  type: MusicAlbum
  date published: 2009-02-06