EFS KS
type: MusicGroup
popularity: 3
followers: 106
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xb1bf59c8df4c9feafc20b66da9f611d0b162eb84365e0b57fb274e6af0bccf96
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954569
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954569
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/b2facc4b-520a-42fa-b5f3-15d1f419db9f.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/b2facc4b-520a-42fa-b5f3-15d1f419db9f.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/b2facc4b-520a-42fa-b5f3-15d1f419db9f
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T14:36:29Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xb1bf59c8df4c9feafc20b66da9f611d0b162eb84365e0b57fb274e6af0bccf96","name":"EFS KS","registered_at":"2026-06-20T12:52:52Z","symbol":"NIM1619301","token_address":"0x08f8b57be1006c89811b2808875fd665ed4a8753","type":"artist","uuid":"b2facc4b-520a-42fa-b5f3-15d1f419db9f"}
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1bf59c8df4c9feafc20b66da9f611d0b162eb84365e0b57fb274e6af0bccf96. Chain 2 (Bitcoin): anchored in block 954569 (2026-06-20T14:36:29Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b2facc4b-520a-42fa-b5f3-15d1f419db9f.json and https://artists.proofprofile.net/proofs/artist/b2facc4b-520a-42fa-b5f3-15d1f419db9f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T14:36:29Z
  text: {"copyright_id":"0xb1bf59c8df4c9feafc20b66da9f611d0b162eb84365e0b57fb274e6af0bccf96","name":"EFS KS","registered_at":"2026-06-20T12:52:52Z","symbol":"NIM1619301","token_address":"0x08f8b57be1006c89811b2808875fd665ed4a8753","type":"artist","uuid":"b2facc4b-520a-42fa-b5f3-15d1f419db9f"}
album: Lijst
  type: MusicAlbum
  date published: 2022-11-25
album: Addy
  type: MusicAlbum
  date published: 2023-05-25
album: Haten
  type: MusicAlbum
  date published: 2023-10-27
album: NO HOOK
  type: MusicAlbum
  date published: 2024-08-30
album: Blijf je bij me?
  type: MusicAlbum
  date published: 2024-12-12
album: Blijf Je Bij Me?
  type: MusicAlbum
  date published: 2025-02-16