Submit a pull request to Electron-cash, and have it merged by the maintainers, The PR should at least implement the following functions:

Send to Cashaccount type 1 (P2PKH) or type 2 (P2SH) via just typing the Cashaccount name#height.(collision string if necessary) in the send field. Upon sending, the confirmation screen should display an emoji associated with the cashaccount. Register any address as a cashaccount type 1 (for single owner wallets) or type 2 (for multisig). Registration should be done via right clicking an address you wish to register in the Address tab and choosing "Register Cashaccount" for a popup dialogue. The registration dialogue box should remain in place until the transaction confirms, then return the final identifier as well as emoji. The address shall subsequently carry a label that indicates the Cashaccount association.

Bonus payout will be paid via Gitcash, up to 0.5 BCH if any of the following is implemented alongside:

Register using existing coins in the wallet in an independent transaction and OP_RETURN, instead of using a lookup server. When done registering, lookup collision via multiple lookup servers for security, instead of just one.

Success will be judged upon testing, and merge by Electron-cash maintainers.

Relevant repos: https://github.com/Electron-Cash/Electron-Cash

https://gitlab.com/cash-accounts/specification/blob/master/SPECIFICATION.md

https://gitlab.com/cash-accounts/specification/blob/master/TEST.md

https://gitlab.com/cash-accounts/specification/blob/master/TEST_PLAN.md

https://gitlab.com/cash-accounts/lookup-server

https://gitlab.com/monsterbitar/cashual-wallet (where this is implemented in javascript)

Known lookup servers:

https://api.cashaccount.info/ by ☯ Jonathan#100

http://89.163.204.53:8585/ by 🎵 becker#112

https://cashacct.imaginary.cash/ by 🍋 im_uname#100

http://lookup.cashaccounts.bigkesh.com:8585/ by 🍪 bigkesh#12741

If interested, please send me a dm either on discord (see profile), telegram, or twitter @im_uname. Serious applicants only, will not accept without DM.