Intro

License:

Kusama Shield is developed under the MIT license.

All current features have been tested with Talisman

Code repositories:

https://codeberg.org/KusamaShield/

Test instance:

https://kusamashield.laissez-faire.trade

How does Kusama Shield work?

Kusama Shield is a zk-powerd multi-asset shielded pool, allowing anyone to deposit any supported token into the shielded pool

User journey

  • User generates a deposit transaction, generating a secret, the secrets gets wrapped in Zero Knowledge and takes a small piece of that data as a deposit token.
  • Anyone that wants to withdraw the tokens, will connect their browser wallet to

How anonymous is the system?

The privacy score can be measured by the K-anonymity score. Which roughly translates to the more users that deposit and withdraws at the same time, the higher anonymity the systems gets, the goal is to get lost in the crowd and provide a

How does it compare to Monero?

Monero relies on decoy transactions. To calculate the anonymity score of your Monero transaction we need to look at a block explorer, and calculate

\( k = \frac{\text{Total number of decoys in the block}}{\text{Total number of transactions in the block}} \)

Supported assets

Kusama Shield supports all ethereum erc20 asset as well as the native token on the chain where it is deployed.

Supported Networks

  • Westend Assethub
  • Moonbase
  • Paseo Contracts Chain

Kusama Shield is compatible with any EVM chain that supports smart contracts in solidity and have an Ethereum RPC.

Westend Assethub

Note: Westend Assethub is currently bricked, use the Paseo chain instead

Faucet:

https://faucet.polkadot.io/westend?parachain=1000

Block explorer:

https://blockscout-asset-hub.parity-chains-scw.parity.io

Moonbase Testnet

Paseo Contracts Assethub

Ethereum RPC:

The current RPC is hosted by parity:

https://testnet-passet-hub-eth-rpc.polkadot.io

However due to strict traffic filtering we recommend that you use this RPC instance:

http://eth-pas-hub.laissez-faire.trade:8545

Add network to talisman:

See screenshot

Run your own RPC instance:

git clone https://github.com/paritytech/polkadot-sdk
cd polkadot-sdk/
cargo build --release -p pallet-revive-eth-rpc
RUST_LOG=info,eth-rpc=debug ./target/release/eth-rpc --dev --rpc-external --rpc-message-buffer-capacity-per-connection 1152048 --rpc-cors all  -lerror,runtime::revive::strace=trace,runtime::revive=info  --node-rpc-url wss://testnet-passet-hub.polkadot.io

Faucet:

https://faucet.polkadot.io/?parachain=1111

Native Asset:

PAS

Ethereum Chain id:

420420422

Paseo Paraid:

1111

Block explorer:

https://blockscout-passet-hub.parity-testnet.parity.io/

Kusama Shield Paseo demo:

Video link

Deploy Kusama Shield Locally

XCM Transfers

Send token transfers to and from other chains using XCM.

Kusama Shield is deployed on Paseo Hub chain

Supported Chains:

  • Paseo Relay
  • Paseo Assethub
  • Paseo Hub
  • Paseo Hydration
  • Paseo Pop

Bridge:

"Kusama Shield Bridge"

1: Connect wallet

Connect your browser wallet and select a substrate/polkadot address.

2: Select to and from chain

Make sure you have funds on your account, use the faucet if needed:
faucet.polkadot.io

3: Press bridge

Tested xcm asset sending routes:

Paseo Relay:

  • Relay > Assethub
  • Relay > Paseo hub
  • Relay > Paseo Hydration
    Unstable route, do not use
  • Relay > Paseo Pop
    Unstable XCM channel

Polkadot.js Apps Chain link

Paseo Assethub:

Paseo Hub:

  • Hub > Relay
  • Hub > Assethub No supported channel.
  • Hub > Hydration
    No open supported XCM channel.
  • Hub > Paseo Pop
    No open supported XCM channel. Polkadot.js App Chain link

Cross Chain Transfers

Kusama Shield may integrate with a defi protocol, allowing anyone to bridge and swap tokens on other ecosystems such as USDT(trc20), Solana, Zcash, XMR, ARB, SUI, etc to swap the native token to DOT with a low(0.5%) fee.

Integrate Kusama Shield

Operator guide

Host Kusama Shield UI instances

Best pratice:

  • Own your own hardware
  • Always respond to abuse requests with a link to the terms of service, ideally within 24hours
  • Keep your systems up to date and happy.
  • use ssh public key authentication
  • Put Kusama Shield react app behind a proxy
  • Always keep a good social relationship with your ISP.

Use your own hardware:

Buying a used server on ebay and asking your local data center or a datacenter nearby for a one unit rack slot, is a great and cost effective way to actually own your own hardware and have more control. Colocation costs are different depending on where(you can also ship your server somewhere cheaper) but for a single unit server your looking at 30-80Euro's a month for the European market. The most price effective way to is often to ask local datacenters or maybe you nknow someone working for a company that has server racks?.

Host using a VPS:

Select a VPS provider, ideally one from Tor's recommended providers | Good Bad ISPs.