What is Beam?
Beam is a proof-of-work privacy coin that launched on January 3, 2019, using the Mimblewimble protocol. Every transaction keeps its amount confidential, and the network also supports private tokens called Confidential Assets and on-chain apps. Note that a different, unrelated gaming token from the Merit Circle community also uses the name and ticker BEAM.
Utility Lens
What Beam actually does
Lets people hold and send coins and tokens with hidden amounts, and run apps whose transactions stay confidential.
- Real-world usage
- earlyThe chain, wallets and apps work, but payment and app use is small and trading volume is thin.
- Token necessity
- essentialBEAM pays mining rewards and transaction fees and is required to issue Confidential Assets.
- Decentralization
- moderateMining is open to GPU owners, but a small core team leads development, early treasury payouts went largely to investors and the team, and governance is only now moving to the BeamX DAO.
- Track record
- provenLive since January 2019; in 2026 it patched a serious range-proof flaw that had gone unnoticed since before launch, and its developers say exploitation is unlikely but not fully disproven.
What it’s used for
Holders use BEAM for private transfers, mining and the network's built-in apps such as a decentralized exchange and a bridge to Ethereum, where a wrapped version called WBEAM exists. Activity is small, and the project's own site lists mainly smaller exchanges and swap services for buying it.
Role of the BEAM token:
Evidence of real use
- Beam's mainnet went live on January 3, 2019, with no premine or ICO and a total supply cap of 262,800,000 BEAM. Source (opens in a new tab)
- In mid-2026 Beam ran an emergency hard fork, at block 3928666, to fix a flaw in its Bulletproofs range-proof code that in theory could have been used to create coins without authorization. Source (opens in a new tab)
- Coinbase's Beam price page states that Beam is not tradable on Coinbase. Source (opens in a new tab)
Privacy: what’s hidden, what isn’t
- Privacy model
- default (every transaction)
- What it hides
- Amounts on every transaction and Confidential Asset transfer, with no public addresses on-chain; outputs sent into the Lelantus shielded pool also hide which earlier output a payment came from.
- What stays visible
- For ordinary Mimblewimble outputs, the links between spent and newly created outputs can be observed, along with timing, fees and block data; bridged WBEAM on Ethereum is fully public.
- Reality check
- Mimblewimble chains can leak their transaction graph to well-connected network observers, and Beam's 2026 range-proof bug shows hidden amounts also make supply errors harder to detect. Major US exchanges do not list it, and EU rules restrict providers from handling privacy coins from July 2027.
How Beam works
Beam is built on Mimblewimble, which records coins as outputs whose values are hidden inside cryptographic commitments, with no reusable public addresses. Transactions in a block can be combined and spent data trimmed away, so a node mainly needs the current set of unspent outputs plus block headers. Because plain Mimblewimble can leak links between outputs, Beam added Lelantus-MW, a shielded pool where coins are double-blinded so the trail between an incoming and outgoing payment is broken.
On top of payments, Beam supports Confidential Assets, which are tokens that look the same on-chain as ordinary BEAM transfers, and a virtual machine introduced in a 2021 hard fork that runs smart contracts, which Beam calls shaders. Its wallet also offers atomic swaps with coins such as BTC, LTC and DOGE, and a bridge brings ETH, USDT, WBTC and DAI onto the chain. Blocks come roughly once a minute and are mined with BeamHash III, an algorithm aimed at GPUs.
Each output's amount is backed by a range proof showing it is not negative. In June 2026 a researcher reported that Beam's Bulletproofs code had an ordering error that, in theory, could let someone fake a negative amount and inflate supply. Developers patched it through an emergency hard fork, said the full history showed no sign of abuse, and proposed a one-time disclosure process, called lustration, to prove the total supply, pending a BeamX DAO vote.
Key moments
- 2019Mainnet launches on January 3 with zero coins in circulation and no premine or ICO.
- 2020A hard fork in June moves mining to BeamHash III; Confidential Assets and Lelantus follow on the roadmap that year.
- 2021A June hard fork adds the Beam Virtual Machine for smart contracts.
- 2024The five-year treasury share of block rewards ends on January 3.
- 2026An emergency sixth hard fork fixes a Bulletproofs flaw; a lustration plan to verify total supply awaits a DAO vote.
Supply
Beam's supply is capped at 262,800,000 BEAM. Rewards started at 100 BEAM per block in year one and halve on a schedule modeled on Bitcoin's, with emission planned to end after 133 years. For the first five years, 20% of block rewards went to a treasury split among investors (about 35%), the core team and advisors (about 45%) and the Beam Foundation (20%).
Risks to understand
- Supply integrity is not yet proven: the 2026 range-proof flaw was fixed, but the proposed lustration check to confirm no extra coins exist has not been carried out.
- Trading is thin and major US exchanges do not list it, so buying or selling can be slow and prices can swing sharply.
- An unrelated gaming token also trades as BEAM, and exchanges such as Kraken list that token, not this coin, so check you are buying the right asset.
- Development relies on a small team, and the project reported losing control of its main X account in July 2026, which can make official updates harder to verify.
- From July 10, 2027 the EU's anti-money-laundering regulation bars crypto service providers there from handling anonymity-enhancing coins.
Beam FAQ
Is Beam the same as the Merit Circle gaming token?
No. This Beam is a Mimblewimble privacy coin launched in 2019; the gaming network token is a separate asset that shares the BEAM ticker.
What happened with Beam's 2026 hard fork?
Beam patched a flaw in its range-proof code that could, in theory, allow coins to be created improperly. Developers say they found no sign of exploitation and have proposed a supply check for a community vote.
Is Beam legal in the US?
As of October 2026 owning BEAM is legal in the US, but Coinbase does not list it and Kraken's BEAM is a different token.
Sources
- BEAM: Confidential DeFi & Crypto (opens in a new tab) — Beam
- Beam Token Economics (opens in a new tab) — Beam Documentation
- Hard Fork Six (opens in a new tab) — Beam
- Lelantus MW (opens in a new tab) — Beam (GitHub wiki)
- Beam Biweekly, August 2026 Ed. #1 (opens in a new tab) — Beam newsletter
- Beam price page (opens in a new tab) — Coinbase
- Beam (BEAM) price page (opens in a new tab) — Kraken
- Regulation (EU) 2024/1624 (Anti-Money Laundering Regulation) (opens in a new tab) — EUR-Lex, Official Journal of the EU
Last reviewed October 20, 2026. Written by Dave McNaught. Utility Lens ratings are editorial judgments, not investment advice. Market data from CoinGecko. Spot an error? Request a correction.
Dave McNaught
Dave McNaught has worked in IT since 1999 and founded All Business Technologies (ABT) in 2003, a Boston-area firm providing Managed IT, Cybersecurity, Managed AI, Web Design and App Development. He publishes The Crypto Guide.