Jan Bach
type: MusicGroup
description: Jan Bach (December 11, 1937 – October 30, 2020) was an American composer. He taught at the University of Tampa (Florida) from 1965 to 1966 and at Northern Illinois University in DeKalb, Illinois (musi
popularity: 3
followers: 45
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xb6f0d5bdaa4b4792c782f3b0f3d9719bf7c0b14ec60fc650976ee0485467d6c3
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953867
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953867
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/0545cbab-1a72-43d6-9a66-46daa30f01c1.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/0545cbab-1a72-43d6-9a66-46daa30f01c1.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/0545cbab-1a72-43d6-9a66-46daa30f01c1
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T01:09:47Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xb6f0d5bdaa4b4792c782f3b0f3d9719bf7c0b14ec60fc650976ee0485467d6c3","name":"Jan Bach","registered_at":"2026-06-15T15:21:12Z","symbol":"NIM0749580","token_address":"0x0b22a5cfddd0a1f38e6019bdb9fe5d85bbb8bcfb","type":"artist","uuid":"0545cbab-1a72-43d6-9a66-46daa30f01c1"}
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 0xb6f0d5bdaa4b4792c782f3b0f3d9719bf7c0b14ec60fc650976ee0485467d6c3. Chain 2 (Bitcoin): anchored in block 953877 (2026-06-16T02:39:16Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0545cbab-1a72-43d6-9a66-46daa30f01c1.json and https://artists.proofprofile.net/proofs/artist/0545cbab-1a72-43d6-9a66-46daa30f01c1.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T02:39:16Z
  text: {"copyright_id":"0xb6f0d5bdaa4b4792c782f3b0f3d9719bf7c0b14ec60fc650976ee0485467d6c3","name":"Jan Bach","registered_at":"2026-06-15T15:21:12Z","symbol":"NIM0749580","token_address":"0x0b22a5cfddd0a1f38e6019bdb9fe5d85bbb8bcfb","type":"artist","uuid":"0545cbab-1a72-43d6-9a66-46daa30f01c1"}