Marc De Siau
type: MusicGroup
popularity: 4
followers: 143
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xf3816af4a3a74637971b0ba1603b0661ee6263f2752159c148d0c379720ec3e9
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953955
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953955
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/2669c7df-2c1a-4285-915a-3abaf649d6ad.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/2669c7df-2c1a-4285-915a-3abaf649d6ad.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/2669c7df-2c1a-4285-915a-3abaf649d6ad
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T14:29:53Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xf3816af4a3a74637971b0ba1603b0661ee6263f2752159c148d0c379720ec3e9","name":"Marc De Siau","registered_at":"2026-06-16T02:51:57Z","symbol":"NIM0914440","token_address":"0x7cbcef6575f0d0c822341561309f64efab21639e","type":"artist","uuid":"2669c7df-2c1a-4285-915a-3abaf649d6ad"}
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 0xf3816af4a3a74637971b0ba1603b0661ee6263f2752159c148d0c379720ec3e9. Chain 2 (Bitcoin): anchored in block 953955 (2026-06-16T14:29:53Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2669c7df-2c1a-4285-915a-3abaf649d6ad.json and https://artists.proofprofile.net/proofs/artist/2669c7df-2c1a-4285-915a-3abaf649d6ad.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T14:29:53Z
  text: {"copyright_id":"0xf3816af4a3a74637971b0ba1603b0661ee6263f2752159c148d0c379720ec3e9","name":"Marc De Siau","registered_at":"2026-06-16T02:51:57Z","symbol":"NIM0914440","token_address":"0x7cbcef6575f0d0c822341561309f64efab21639e","type":"artist","uuid":"2669c7df-2c1a-4285-915a-3abaf649d6ad"}
album: La Vida Loca Es
  type: MusicAlbum
  date published: 2007-07-02
album: This Is Tecktonik
  type: MusicAlbum
  date published: 2008-07-07
album: Forever Young
  type: MusicAlbum
  date published: 2010
album: Forever Young
  type: MusicAlbum
  date published: 2010-10-15