Sam Leyden
type: MusicGroup
popularity: 2
followers: 145
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x51a4965006ffb7661200800e45ee8168666830fb332c797f6926498f2ff94604
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953915
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953915
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/1a1c4ba9-999c-4402-95b8-ed65f4f872eb.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/1a1c4ba9-999c-4402-95b8-ed65f4f872eb.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/1a1c4ba9-999c-4402-95b8-ed65f4f872eb
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T08:36:32Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x51a4965006ffb7661200800e45ee8168666830fb332c797f6926498f2ff94604","name":"Sam Leyden","registered_at":"2026-06-15T22:37:49Z","symbol":"NIM0853738","token_address":"0xd798fd3d8ea1712e855b8839cef854083ce4c411","type":"artist","uuid":"1a1c4ba9-999c-4402-95b8-ed65f4f872eb"}
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 0x51a4965006ffb7661200800e45ee8168666830fb332c797f6926498f2ff94604. 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/1a1c4ba9-999c-4402-95b8-ed65f4f872eb.json and https://artists.proofprofile.net/proofs/artist/1a1c4ba9-999c-4402-95b8-ed65f4f872eb.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T20:07:57Z
  text: {"copyright_id":"0x51a4965006ffb7661200800e45ee8168666830fb332c797f6926498f2ff94604","name":"Sam Leyden","registered_at":"2026-06-15T22:37:49Z","symbol":"NIM0853738","token_address":"0xd798fd3d8ea1712e855b8839cef854083ce4c411","type":"artist","uuid":"1a1c4ba9-999c-4402-95b8-ed65f4f872eb"}
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  type: MusicAlbum
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  type: MusicAlbum
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  type: MusicAlbum
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