Dorsaf Hamdani
type: MusicGroup
description: Dorsaf Hamdani (; Biographie de Dorsaf Hamdani (Music Story) ) is a Tunisian singer, musicologist and the JMC Director. Life Daughter of a violinist, Hamdani joined the National Conservatory of Mu
popularity: 9
followers: 493
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x184618f75fd8e3de520b30409fd860938c787936da8b15989894c297c98f2a95
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954500
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954500
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/9b6c6a98-0300-4de7-b78a-9a30736123fa.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/9b6c6a98-0300-4de7-b78a-9a30736123fa.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/9b6c6a98-0300-4de7-b78a-9a30736123fa
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T04:47:29Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x184618f75fd8e3de520b30409fd860938c787936da8b15989894c297c98f2a95","name":"Dorsaf Hamdani","registered_at":"2026-06-20T03:26:08Z","symbol":"NIM1500942","token_address":"0x345b214d3da6422cb46a051e1c95f8e843ec3a0b","type":"artist","uuid":"9b6c6a98-0300-4de7-b78a-9a30736123fa"}
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 0x184618f75fd8e3de520b30409fd860938c787936da8b15989894c297c98f2a95. Chain 2 (Bitcoin): anchored in block 954500 (2026-06-20T04:47:29Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9b6c6a98-0300-4de7-b78a-9a30736123fa.json and https://artists.proofprofile.net/proofs/artist/9b6c6a98-0300-4de7-b78a-9a30736123fa.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T04:47:29Z
  text: {"copyright_id":"0x184618f75fd8e3de520b30409fd860938c787936da8b15989894c297c98f2a95","name":"Dorsaf Hamdani","registered_at":"2026-06-20T03:26:08Z","symbol":"NIM1500942","token_address":"0x345b214d3da6422cb46a051e1c95f8e843ec3a0b","type":"artist","uuid":"9b6c6a98-0300-4de7-b78a-9a30736123fa"}
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  type: MusicAlbum
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  type: MusicAlbum
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  type: MusicAlbum
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  type: MusicAlbum
  date published: 2021-01-23
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  type: MusicAlbum
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  type: MusicAlbum
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