Wallet Connect V2 support for BitcoinCash

Wallets
#21

So here’s the current state of things:

Pat’s spec simply referred to as “WalletConnect” (WalletConnect + Paytaca Connector interface) has been implemented in 3 BCH wallets: Cashonize, Zapit and Paytaca.
The protocol is used by multiple dapps: Tapswap, CashTokens Studio, Cash-Ninjas mint with a few more in the works

Jim’s spec called “CashConnect” (WalletConnect + CashRPC) has been merged into mainline Cashonize but the spec is still marked as pre-alpha.
CashConnect is used by the BCH Guru price prediction game and by the CashRPC IDE

And then there is still the custom Paytaca Connect which is used by the bitcats and available as a 2nd option in the CashTokens studio. Paytaca connect was used by the Paytaca browser extension and was pioneering wallet connect functionality on BCH. Now it can be phased out, as Pat’s wallet connect spec is more general than for just browser extensions.

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#22

Without really knowing too much about it, I was impressed by Pat’s spec, and have been blown away by Jim’s spec, even at this early stage. The Guru beta is amazing. Can’t wait until we have that implemented across the ecosystem, and this is only the early version (a bit of work on just the UI to have more helpful links and info would already be a big step forward).

2 Likes
#23

I maintain a list of BCH walletConnecta apps at Tokenaut.cash, it has been growing steadily through-out 2024, so the protocol is positioned to play an important role on BCH going forward.

There is a 4th wallet with support for BCH Wallet Connect on the way: Electron Cash. It will have WalletConnect support through an EC plugin but this is planned to be merged into the mainline wallet eventually.

In the Elecron Cash group the developer, ‘OPReturn’, wrote:

I think the alpha version for WalletConnect plugin for EC is almost ready. Doing final testings. Hopefully I’ll be able to do a release this week.

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#24

There’s now 10 dapps using the BCH WalletConnect protocol

The WalletConnect plugin Electron Cash also has been released in alpha version by now so that means 4 supporting wallets (link to the plugin)

Paytaca Connect is also being deprecated as a separate standard and will shortly be removed from Tapswap and from the CashTokens Studio as a user-option.

This means there is strong standardization of the BCH ecosystem around the WalletConnect standard which is great news for users and developers.

CashScript now also has a WalletConnect guide for contract developers to get started using the standard in their dapps.

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#25

has anyone been able to migrate from the deprecated “@walletconnect/modal” library?

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#26

Cashonize and Selene are using @reown/walletkit and @walletconnect/core:

Selene reference (basically a direct rip from Cashonize adapted for Selene’s architecture):

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#27

There’s this recent migration blogpost by Reown for the deprecated @walletconnect/modal library: WalletConnect Modal to Reown AppKit Core - Reown Docs

It seems the new library is @reown/appkit/core and you create the modal with a createAppKit function. The styling of the modal also seems to have changed somewhat.

@kzKallisti those are the libraries on the wallet side, Dagur as an app dev is asking about the libraries for the dapp side (the modal library used to display the walletconnect qr code)

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#28

oops my bad, thanks for the correction :sweat_smile:

#29

I have created @bch-wc2/interfaces and @bch-wc2/privkey-connector packages.

@bch-wc2/interfaces formalizes the specced interfaces and allows to import them to create signTransaction requests such as those in cashscript and in mainnet-js (see https://github.com/mainnet-cash/mainnet-js/releases/tag/2.7.7)

@bch-wc2/privkey-connector is a small piece of code which utilizes a private key to sign the WC2 requests locally, it is super important part for local development and automated testing.

See the repository https://github.com/mainnet-pat/bch-wc2

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