Sefer Dursun
type: MusicGroup
popularity: 5
followers: 35
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xb30ba974b4065c4a84fa989dd5150a782dc8b4c07351559648d8b11a5060d5ea
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953899
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953899
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/11bdea83-b3e1-4a45-ba0f-bed7e884d839.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/11bdea83-b3e1-4a45-ba0f-bed7e884d839.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/11bdea83-b3e1-4a45-ba0f-bed7e884d839
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T06:37:25Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xb30ba974b4065c4a84fa989dd5150a782dc8b4c07351559648d8b11a5060d5ea","name":"Sefer Dursun","registered_at":"2026-06-15T19:44:22Z","symbol":"NIM0812398","token_address":"0x7a6660fc1bba629fbad7bd986307234b674f372a","type":"artist","uuid":"11bdea83-b3e1-4a45-ba0f-bed7e884d839"}
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 0xb30ba974b4065c4a84fa989dd5150a782dc8b4c07351559648d8b11a5060d5ea. Chain 2 (Bitcoin): anchored in block 953899 (2026-06-16T06:37:25Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/11bdea83-b3e1-4a45-ba0f-bed7e884d839.json and https://artists.proofprofile.net/proofs/artist/11bdea83-b3e1-4a45-ba0f-bed7e884d839.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
  date published: 2026-06-16T06:37:25Z
  text: {"copyright_id":"0xb30ba974b4065c4a84fa989dd5150a782dc8b4c07351559648d8b11a5060d5ea","name":"Sefer Dursun","registered_at":"2026-06-15T19:44:22Z","symbol":"NIM0812398","token_address":"0x7a6660fc1bba629fbad7bd986307234b674f372a","type":"artist","uuid":"11bdea83-b3e1-4a45-ba0f-bed7e884d839"}
album: Canım Efendim
  type: MusicAlbum
  date published: 2006-12-25