David Constantin
type: MusicGroup
genre: manele
description: David Constantin (born 1974) is a filmmaker from Mauritius. Career Constantin was born in Mauritius Island in 1974. He obtained a degree in Information and Communication, and then attended the ESAV
popularity: 3
followers: 36
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xecaf8a911444d0f7b72c744e3cd71f81493b6bf84fb208c64a1a7bdc003d7e11
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953975
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953975
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/2b9eb65f-283e-4fda-b3fc-2404642f45ac.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/2b9eb65f-283e-4fda-b3fc-2404642f45ac.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/2b9eb65f-283e-4fda-b3fc-2404642f45ac
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T16:53:41Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xecaf8a911444d0f7b72c744e3cd71f81493b6bf84fb208c64a1a7bdc003d7e11","name":"David Constantin","registered_at":"2026-06-16T04:41:26Z","symbol":"NIM0940588","token_address":"0x361bc95e9de6517de75fe6de1b47172121e64178","type":"artist","uuid":"2b9eb65f-283e-4fda-b3fc-2404642f45ac"}
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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecaf8a911444d0f7b72c744e3cd71f81493b6bf84fb208c64a1a7bdc003d7e11. Chain 2 (Bitcoin): anchored in block 953997 (2026-06-16T20:07:57Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2b9eb65f-283e-4fda-b3fc-2404642f45ac.json and https://artists.proofprofile.net/proofs/artist/2b9eb65f-283e-4fda-b3fc-2404642f45ac.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T20:07:57Z
  text: {"copyright_id":"0xecaf8a911444d0f7b72c744e3cd71f81493b6bf84fb208c64a1a7bdc003d7e11","name":"David Constantin","registered_at":"2026-06-16T04:41:26Z","symbol":"NIM0940588","token_address":"0x361bc95e9de6517de75fe6de1b47172121e64178","type":"artist","uuid":"2b9eb65f-283e-4fda-b3fc-2404642f45ac"}
album: Copilul meu
  type: MusicAlbum
  date published: 2022-09-16
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  type: MusicAlbum
  date published: 2022-10-21
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  type: MusicAlbum
  date published: 2022-12-24
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  type: MusicAlbum
  date published: 2024-01-07