Sempé'
type: MusicGroup
popularity: 2
followers: 136
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x22db61ba8b430f89e961d0a490a2f35bbaed67b5f4efc0610decf0de219e9ef9
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/265eccf7-db06-4619-baea-bb0836bf41da.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/265eccf7-db06-4619-baea-bb0836bf41da.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/265eccf7-db06-4619-baea-bb0836bf41da
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T14:29:53Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x22db61ba8b430f89e961d0a490a2f35bbaed67b5f4efc0610decf0de219e9ef9","name":"Sempé'","registered_at":"2026-06-16T02:59:21Z","symbol":"NIM0916212","token_address":"0x64fb1f34c81b49d60332512f4ae27fe72a56a632","type":"artist","uuid":"265eccf7-db06-4619-baea-bb0836bf41da"}
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 0x22db61ba8b430f89e961d0a490a2f35bbaed67b5f4efc0610decf0de219e9ef9. 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/265eccf7-db06-4619-baea-bb0836bf41da.json and https://artists.proofprofile.net/proofs/artist/265eccf7-db06-4619-baea-bb0836bf41da.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T14:29:53Z
  text: {"copyright_id":"0x22db61ba8b430f89e961d0a490a2f35bbaed67b5f4efc0610decf0de219e9ef9","name":"Sempé'","registered_at":"2026-06-16T02:59:21Z","symbol":"NIM0916212","token_address":"0x64fb1f34c81b49d60332512f4ae27fe72a56a632","type":"artist","uuid":"265eccf7-db06-4619-baea-bb0836bf41da"}
album: Chocolate and Cheese 1 & 2
  type: MusicAlbum
  date published: 2012-03-20
album: Aaa
  type: MusicAlbum
  date published: 2012-12-12
album: Aaa
  type: MusicAlbum
  date published: 2012-12-12
album: Chocolate & Cheese Trilogy
  type: MusicAlbum
  date published: 2015-11-25
album: Heatles
  type: MusicAlbum
  date published: 2021-01-11
album: Thriller
  type: MusicAlbum
  date published: 2021-01-24
album: Genius
  type: MusicAlbum
  date published: 2022-01-12
album: Genius
  type: MusicAlbum
  date published: 2022-01-12
album: Hibiscus Island
  type: MusicAlbum
  date published: 2022-06-26