Sammie Largo
type: MusicGroup
genre: traditional music
popularity: 15
followers: 991
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x4b2cb292c712108846d3aa119b6a23c2c5bab4cd46cecd48ec1d2bcff11696d9
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953667
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953667
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/55fd09ad-5f6b-4549-add1-28f2e7e6dba6.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/55fd09ad-5f6b-4549-add1-28f2e7e6dba6.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/55fd09ad-5f6b-4549-add1-28f2e7e6dba6
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-14T17:49:01Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x4b2cb292c712108846d3aa119b6a23c2c5bab4cd46cecd48ec1d2bcff11696d9","name":"Sammie Largo","registered_at":"2026-06-14T13:32:33Z","symbol":"NIM0468318","token_address":"0x9aa5024545cf72021be5d7eb9a6218c94c7076f6","type":"artist","uuid":"55fd09ad-5f6b-4549-add1-28f2e7e6dba6"}
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 0x4b2cb292c712108846d3aa119b6a23c2c5bab4cd46cecd48ec1d2bcff11696d9. Chain 2 (Bitcoin): anchored in block 953667 (2026-06-14T17:49:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/55fd09ad-5f6b-4549-add1-28f2e7e6dba6.json and https://artists.proofprofile.net/proofs/artist/55fd09ad-5f6b-4549-add1-28f2e7e6dba6.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-14T17:49:01Z
  text: {"copyright_id":"0x4b2cb292c712108846d3aa119b6a23c2c5bab4cd46cecd48ec1d2bcff11696d9","name":"Sammie Largo","registered_at":"2026-06-14T13:32:33Z","symbol":"NIM0468318","token_address":"0x9aa5024545cf72021be5d7eb9a6218c94c7076f6","type":"artist","uuid":"55fd09ad-5f6b-4549-add1-28f2e7e6dba6"}
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  date published: 2001-01-01
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