Sigma Pr
type: MusicGroup
genre: organic house
popularity: 3
followers: 69
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x60bc2afdad1b6997a32a4a5d9af695e19e8c774e1ab6103d708cf65bf24f3a3d
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954047
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954047
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/41c76c7b-3895-446f-b511-4d37740d6ee5.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/41c76c7b-3895-446f-b511-4d37740d6ee5.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/41c76c7b-3895-446f-b511-4d37740d6ee5
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T04:56:08Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x60bc2afdad1b6997a32a4a5d9af695e19e8c774e1ab6103d708cf65bf24f3a3d","name":"Sigma Pr","registered_at":"2026-06-16T12:29:27Z","symbol":"NIM1052304","token_address":"0x602276f3dc2e22a17d3153125dc499fdcbde9918","type":"artist","uuid":"41c76c7b-3895-446f-b511-4d37740d6ee5"}
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 0x60bc2afdad1b6997a32a4a5d9af695e19e8c774e1ab6103d708cf65bf24f3a3d. Chain 2 (Bitcoin): anchored in block 954047 (2026-06-17T04:56:08Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/41c76c7b-3895-446f-b511-4d37740d6ee5.json and https://artists.proofprofile.net/proofs/artist/41c76c7b-3895-446f-b511-4d37740d6ee5.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T04:56:08Z
  text: {"copyright_id":"0x60bc2afdad1b6997a32a4a5d9af695e19e8c774e1ab6103d708cf65bf24f3a3d","name":"Sigma Pr","registered_at":"2026-06-16T12:29:27Z","symbol":"NIM1052304","token_address":"0x602276f3dc2e22a17d3153125dc499fdcbde9918","type":"artist","uuid":"41c76c7b-3895-446f-b511-4d37740d6ee5"}
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