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An API and test-app that exposes zcash functionality for app consumption

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Zingolib

license coverage This repo provides both a library for zingo-mobile, as well as an included cli application to interact with the Zcash blockchain through a chain indexer.

Security Vulnerability Disclosure

If you believe you have discovered a security issue, please contact us at:

zingodisclosure@proton.me

Zingo CLI

zingo-cli is a command line indexer client. Its own README, zingo-cli/README.md, holds everything specific to it: the one procedure that builds it, which bundles the nym-proxy binary beside it, and how to launch it, take it online, choose a network (regtest included), create or restore a wallet, and set its session options. Releases are currently only provisional, we will update the README as releases come out.

Privacy

  • While all the keys and transaction detection happens on the client, the server can learn what blocks contain your shielded transactions.
  • The server also learns other metadata about you like your ip address etc...
  • Also remember that t-addresses are publicly visible on the blockchain.
  • Price information is retrieved from Gemini exchange.

Note Management

Zingo-CLI does automatic note and utxo management, which means it doesn't allow you to manually select which address to send outgoing transactions from. It follows these principles:

  • Defaults to sending shielded transactions, even if you're sending to a transparent address
  • Can select funds from multiple shielded addresses in the same transaction
  • Will automatically shield your sapling funds at the first opportunity
    • When sending an outgoing transaction to a shielded address, Zingo-CLI can decide to use the transaction to additionally shield your sapling funds (i.e., send your sapling funds to your own orchard address in the same transaction)
  • Transparent funds are only spent via explicit shield operations

Architecture decision records

Architecture decision records live in zingo-adrs, and zingolib's own records sit under docs/adr/zingolib/ once the submodule is initialised. The zingo-adrs README explains how to read them, advance the pointer, and propose a record.

Testing

run_workspace_tests.sh script may be used as a helper to run all tests in one invocation.

About

An API and test-app that exposes zcash functionality for app consumption

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