Marwan Samer
type: MusicGroup
popularity: 2
followers: 52
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xafa7bfb5907ce3e2e72a0725e1cec85e74043e44c58e7f570cf54d08b5909ab5
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953867
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953867
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/05636822-f999-407e-8414-14c4750bb7ad.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/05636822-f999-407e-8414-14c4750bb7ad.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/05636822-f999-407e-8414-14c4750bb7ad
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T01:09:47Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xafa7bfb5907ce3e2e72a0725e1cec85e74043e44c58e7f570cf54d08b5909ab5","name":"Marwan Samer","registered_at":"2026-06-15T15:29:23Z","symbol":"NIM0751534","token_address":"0xdd027b26f17c80ad98a67ae0b2a478c9aadd5a74","type":"artist","uuid":"05636822-f999-407e-8414-14c4750bb7ad"}
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 0xafa7bfb5907ce3e2e72a0725e1cec85e74043e44c58e7f570cf54d08b5909ab5. Chain 2 (Bitcoin): anchored in block 953867 (2026-06-16T01:09:47Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/05636822-f999-407e-8414-14c4750bb7ad.json and https://artists.proofprofile.net/proofs/artist/05636822-f999-407e-8414-14c4750bb7ad.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
  date published: 2026-06-16T01:09:47Z
  text: {"copyright_id":"0xafa7bfb5907ce3e2e72a0725e1cec85e74043e44c58e7f570cf54d08b5909ab5","name":"Marwan Samer","registered_at":"2026-06-15T15:29:23Z","symbol":"NIM0751534","token_address":"0xdd027b26f17c80ad98a67ae0b2a478c9aadd5a74","type":"artist","uuid":"05636822-f999-407e-8414-14c4750bb7ad"}
album: Ya Lomima (feat. Abs Hima)
  type: MusicAlbum
  date published: 2019-02-28