To anyone still interested in this project, I have both good and bad news for you.

The bad news is that the developer abandoned the project a month ago, without leaving any comment or delegating any responsibilities.
The good news is that the community on the Discord channel is working hard to bring it back to life.

This is what the community has accomplished so far:

• New official website: http://www.martiscoin.net
• New block explorer: http://explorer.martiscoin.net:9911
• New GitHub organization: https://github.com/MartisCommunity
• New node version solving mining bug: https://github.com/MartisCommunity/node/releases/tag/4.0.0

This is what we're currently working on:

• Restoring the listing on MecaCEX and NonKYC (paused due to the mining bug)
• Reopening social media accounts
• Reestablishing communication with CoinGecko, CoinMarketCap, and additional exchanges

If you liked Martiscoin for its decentralization, you'll be happy to know that now it's even more decentralized — without its founder.