Cat Semaan
type: MusicGroup
popularity: 2
followers: 139
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xb8bb144d18e592abd26300f5fa5122f9c1928a16a648442f6de5da80fc428fce
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954017
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954017
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/362b0fdd-256c-43d7-b828-699ae46596f6.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/362b0fdd-256c-43d7-b828-699ae46596f6.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/362b0fdd-256c-43d7-b828-699ae46596f6
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T23:38:33Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xb8bb144d18e592abd26300f5fa5122f9c1928a16a648442f6de5da80fc428fce","name":"Cat Semaan","registered_at":"2026-06-16T08:24:23Z","symbol":"NIM0993836","token_address":"0x118d7de45187e9d7091ba33d07bf7305556fe472","type":"artist","uuid":"362b0fdd-256c-43d7-b828-699ae46596f6"}
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 0xb8bb144d18e592abd26300f5fa5122f9c1928a16a648442f6de5da80fc428fce. Chain 2 (Bitcoin): anchored in block 954017 (2026-06-16T23:38:33Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/362b0fdd-256c-43d7-b828-699ae46596f6.json and https://artists.proofprofile.net/proofs/artist/362b0fdd-256c-43d7-b828-699ae46596f6.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
  date published: 2026-06-16T23:38:33Z
  text: {"copyright_id":"0xb8bb144d18e592abd26300f5fa5122f9c1928a16a648442f6de5da80fc428fce","name":"Cat Semaan","registered_at":"2026-06-16T08:24:23Z","symbol":"NIM0993836","token_address":"0x118d7de45187e9d7091ba33d07bf7305556fe472","type":"artist","uuid":"362b0fdd-256c-43d7-b828-699ae46596f6"}
album: Gone Cold
  type: MusicAlbum
  date published: 2024-07-14