Other · Review
ActiveCityCoins Review 2026: City Coins Paying Bitcoin on Stacks
CityCoins is a Stacks-based set of city-specific cryptocurrencies, starting with MiamiCoin (MIA), where mining supports a city and pays out Bitcoin. Public information is thin and no audits are listed, so treat it as an experimental project.
By the DappsAtlas editorial team · Updated
DappsAtlas score
5.0/10
Mixed
Our verdict on CityCoins
5.0/10CityCoins suits crypto-curious users who like the idea of funding a city while earning Bitcoin-denominated rewards on Stacks, and who are comfortable reading smart contracts. Its main strength is a simple, open mining model tied to civic purpose. The main caveat is thin public information: no audits are listed, current rules are unclear from public sources, and TVL is small. Treat it as experimental and commit only small amounts.
Score breakdown
How CityCoins scores
- Security
- 4.0/10
- Ease of use
- 5.0/10
- Fees
- n/a
- Features
- 5.0/10
Scores run from 0 to 10 and are based only on facts we could verify. Where information was missing we mark the score n/a rather than guess.
What is CityCoins?
CityCoins is a project on the Stacks blockchain that creates a separate cryptocurrency for each city. The first was MiamiCoin (MIA). The stated aim is to let communities fund improvements to their cities while rewarding individual contributors and city governments.
According to the project's descriptions, anyone can mine CityCoins and earn Bitcoin from each protocol as it gets more usage. DefiLlama lists it on Stacks with about $1.4 million in TVL, up 15.2% over seven days, and it has been tracked since March 2022.
Its homepage is nearly empty, so the current state of the product cannot be confirmed from it. Public reporting points to an API, documentation and a points program, which suggests some ongoing activity. A community post also shows past miners going idle.
How CityCoins works
CityCoins runs on Stacks, a blockchain connected to Bitcoin. Each city has its own coin, starting with MiamiCoin (MIA). Users take part in mining by sending funds to a smart contract rather than running hardware.
The project describes a model where part of the proceeds supports the city and contributors can earn BTC as the protocol sees more usage. The exact split, schedule and current rules are not given publicly.
DefiLlama files it under Yield and shows no audits. Treat this as an experimental design and read the contracts and docs before taking part.
6 features
Key features
01
City-specific coins
Each city has its own coin, beginning with Miami and MiamiCoin (MIA).
02
Open mining
Anyone can mine CityCoins through smart contracts on the Stacks blockchain.
03
Bitcoin rewards
The project says contributors can earn BTC from each CityCoin protocol as usage grows.
04
City funding model
Part of the mining proceeds is meant to benefit city governments and communities.
05
Developer API
A public API gives access to Stacks and CityCoins data for developers and trackers.
06
Points program
Public reporting references a CityCoins Points program that credits participants for activities that meet current rules.
Pros and cons
What we like
- Clear, simple concept: city-specific coins that support communities
- Open participation: anyone can mine via smart contracts
- Bitcoin-denominated rewards through the Stacks ecosystem
- Public API and documentation for developers
- Listed on DefiLlama since 2022, so it has some track record
Watch out for
- No third-party audits are listed on DefiLlama
- TVL of about $1.4 million is small, so liquidity is limited
- Its homepage is nearly empty, so current product details are unclear
- Tied to the Stacks ecosystem, which narrows who can use it
- City coins have no guaranteed utility beyond what the protocol and communities build
- A Reddit post in the results suggests some past miners went idle, hinting at uneven engagement
CityCoins fees
The project does not publish a fee schedule. Mining and any transfers involve Stacks network transaction costs, which users would see in their wallet before signing.
Any protocol-level share of mining funds sent to cities or stackers is not quantified. Check the official site and the smart contract documentation for current terms.
Is CityCoins safe?
DefiLlama lists no audits for CityCoins. The system relies on smart contracts on Stacks, so contract bugs, design flaws and changes to rules are the main risks. Funds committed to mining may not be recoverable.
The project does not mention hacks, incidents or regulatory status. City-linked crypto projects can attract regulatory and political attention, so check current rules where you live. Nothing here is financial advice.
6 steps
How to get started with CityCoins
- 1
Read the official site and documentation to see which city coins are currently active.
- 2
Set up a Stacks-compatible wallet and keep the seed phrase offline.
- 3
Check current mining and stacking rules, since the project does not state them.
- 4
Start with a small amount to understand costs and payout timing.
- 5
Review the smart contracts and community channels for recent activity.
- 6
Only commit funds you can afford to lose.
Who CityCoins is for
CityCoins is for users already in or curious about the Stacks ecosystem who accept experimental, unaudited smart contracts. It is less suited to people who want a clearly documented, audited yield product with published fees.
CityCoins FAQs
What is CityCoins?
CityCoins is a set of cryptocurrencies on the Stacks blockchain, each tied to a city. The first was MiamiCoin (MIA). The idea is that users support a city while earning rewards in Bitcoin.
How do you mine CityCoins?
Public sources say anyone can mine CityCoins. Mining here means committing funds through smart contracts on Stacks, not running hardware. Exact current steps are not public, so check the official site.
Can you earn Bitcoin with CityCoins?
Descriptions say users can earn Bitcoin from each CityCoin protocol as it gets more usage. The rate and mechanism are not detailed publicly, so no yield figure can be quoted.
Which blockchain does CityCoins use and is it audited?
DefiLlama lists CityCoins on Stacks only, with no audits listed. It has been listed since March 2022 and shows about $1.4 million in TVL.
Does CityCoins have its own token?
The project does not say. DefiLlama lists no token for the project as a whole, but individual city coins such as MIA exist. Check market data and project status before acting.
Compare
CityCoins alternatives
Bio Protocol is a DeSci platform with an AI research tool, a community launchpad for science projects, and the BIO governance token, for crypto-savvy backers.
Juicebox V1 is the original Ethereum version of an open-source protocol for programmable crypto fundraising by builders, creators and communities.
Aerodrome Ignition is a Base token launch tool that seeds Aerodrome pools with 10-20% of supply and lets veAERO holders direct incentives.
Royco V2 is a DeFi protocol that splits yield sources into Senior, Junior and Senior LP tranches for capital allocators on Ethereum, Base, Arbitrum and Avalanch
Goldilocks DAO is a Berachain DeFi project with a price-floor AMM, NFT lending and the LOCKS token, aimed at experienced on-chain users.
Royco V1 is a DeFi yield-market protocol that splits yield sources into protected Senior and first-loss Junior tranches for capital allocators.
Same category
More Other dApps
Metaplex is a Solana platform for issuing and trading tokens, NFTs and real-world assets, with token sales and Raydium liquidity.
Juicebox V3 is an open-source Ethereum protocol that lets projects raise funds, issue tokens and run transparent payout rules.
OpenPeer is a non-custodial P2P protocol for trading fiat and crypto with smart-contract escrow on several EVM chains.
Strata is an on-chain risk-tranching protocol that splits yield strategies like Ethena's USDe into senior and junior tokens for different risk appetites.
VitaDAO is a community-owned DAO that funds early-stage longevity research, with a VITA governance token and a health-data app with AI.
Flap is an on-chain token launch protocol using bonding curves, optional tax tokens and custom vaults, aimed at token creators and developers on EVM chains.
Same chain
More on Stacks
Gate is a centralized crypto exchange founded in 2013 offering spot, futures, stocks and earn products for traders who want one multi-asset account.
Bitget is a centralized exchange for crypto spot and futures that also offers tokenized stocks, commodities and forex in one account, for active traders.
Wormhole is a cross-chain messaging and bridge protocol linking over 40 blockchains, with the W governance token, for DeFi users and multichain developers.
Bitflow is a Stacks-based DEX and swap aggregator for Bitcoiners, with DCA, limit orders and HODLMM concentrated liquidity pools.
StackingDAO is a Stacks liquid staking protocol where users stake STX or BTC and receive liquid tokens such as stSTX, stSTXbtc and stBTC.
Zest V2 is a Bitcoin-focused lending protocol on Stacks with L1 Bitcoin Collateral Vaults, for BTC holders who want to earn or borrow.
How we checked
Sources
Last updated . Spotted an error? Tell us and we will correct it.