Endi Contsov
type: MusicGroup
popularity: 13
followers: 18
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x5f440d2d5e3ddbdd56749ae278573f38d190c66ba204cab6a3cec5a21552b065
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953648
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953648
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/41d4a20f-ef53-4572-a588-00d6d4afd687.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/41d4a20f-ef53-4572-a588-00d6d4afd687.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/41d4a20f-ef53-4572-a588-00d6d4afd687
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-14T15:20:52Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x5f440d2d5e3ddbdd56749ae278573f38d190c66ba204cab6a3cec5a21552b065","name":"Endi Contsov","registered_at":"2026-06-14T11:27:28Z","symbol":"NIM0438466","token_address":"0x1cc4d3efddc6ef6c00f52e91dbc4a52edd8a2c13","type":"artist","uuid":"41d4a20f-ef53-4572-a588-00d6d4afd687"}
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 0x5f440d2d5e3ddbdd56749ae278573f38d190c66ba204cab6a3cec5a21552b065. Chain 2 (Bitcoin): anchored in block 953648 (2026-06-14T15:20:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/41d4a20f-ef53-4572-a588-00d6d4afd687.json and https://artists.proofprofile.net/proofs/artist/41d4a20f-ef53-4572-a588-00d6d4afd687.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-14T15:20:52Z
  text: {"copyright_id":"0x5f440d2d5e3ddbdd56749ae278573f38d190c66ba204cab6a3cec5a21552b065","name":"Endi Contsov","registered_at":"2026-06-14T11:27:28Z","symbol":"NIM0438466","token_address":"0x1cc4d3efddc6ef6c00f52e91dbc4a52edd8a2c13","type":"artist","uuid":"41d4a20f-ef53-4572-a588-00d6d4afd687"}