Blockchain's permanent record was supposed to make crypto transparent. Binance Research's latest data shows it has also made criminal proceeds structurally impossible to launder at scale.
Key Takeaways
US$75B+ in illicit crypto trapped on-chain.
Illicit funds grew 28% in 2025 vs 2024: less is being successfully laundered.
Mixers cap. at $10M per day: clearing the backlog would take 20+ years.
80%+ of illicit funds have moved to downstream wallets, not the original address.
What the chart shows about the accumulation
Binance Research published a five-part thread on May 14 using Chainalysis data current as of May 13, 2026. The central chart tracks total illicit crypto funds held on-chain from 2016 to 2025, split between the estimated total and the portion held by downstream addresses.
Illicit crypto sits below 1% of total transaction volume.
US$75B+ in dirty funds stuck on-chain.
Here's why blockchain's transparency has become the launderer's worst enemy ? pic.twitter.com/2MAHxHziXk
— Binance Research (@BinanceResearch) May 14, 2026
Reading the chart directly: the figures remained in the $8B–$13B range from 2016 through 2020 before spiking to approximately $54B in 2021 during the bull market peak. The decline from approximately $54B in 2021 to approximately $30B in 2022 coincides with the crypto bear market, suggesting asset value deflation reduced the dollar figure rather than successful laundering clearing the backlog.
The figure recovered to approximately $63B in 2024 and reached approximately $82B in 2025, the highest reading in the dataset. Of that 2025 total, approximately $70B sits in downstream addresses rather than the original crime wallets, representing approximately 85% of the total.
Illicit crypto remains below 1% of total on-chain transaction volume. The problem is not the proportion, it is the absolute dollar figure and the structural inability to move it.
Why the laundering infrastructure cannot clear the backlog
The 28% annual increase in trapped illicit funds is not evidence that more crime is being committed at an accelerating rate: it is evidence that the laundering exit is closing faster than new funds are entering, because every year the compliance infrastructure adds more checkpoints while the mixer capacity stays fixed.
Binance Research identifies four mechanisms preventing exit: KYT screening that flags wallets at entry to exchanges, KYC requirements that block at off-ramps, stablecoin issuers who can and do freeze balances, and direct law enforcement seizure. Every exit route has a checkpoint.
The mixer capacity figure makes the scale of the problem concrete. The mixer throughput ceiling of $10 million per day across the largest operators means the laundering infrastructure can process at most $3.65 billion per year, which against a $75 billion backlog represents a structural impossibility: at current capacity, clearing the existing trapped funds through mixers alone would require more than twenty years, before accounting for any new crime being added to the chain. Binance Research’s conclusion is precise: “Mixers aren’t a solution at scale. They’re a footnote.”
Why moving the funds makes the problem worse
The most counterintuitive finding in the thread is that 80%+ of illicit funds have already left their original crime addresses and moved to downstream wallets one or two hops away. This looks like progress for the launderer. Binance Research argues it is the opposite.
The fact that 80%+ of illicit funds have already moved to downstream addresses one or two hops from the original crime wallet is not a sign that launderers are succeeding, it is a sign that they are moving funds without being able to exit, accumulating blockchain history with every hop that makes the eventual tracing more complete rather than less. Every movement creates a new on-chain record. The ledger does not forget hops. Traceability does not stop at the first wallet, it follows the money through every subsequent address indefinitely.
As an illustration of the principle: a launderer who moves $1B through ten intermediate wallets has created ten additional data points for investigators rather than erasing the original one. Moving funds on-chain without a viable exit does not reduce risk – it increases the surface area of the crime’s on-chain footprint.
A continuation of the current trajectory – illicit funds growing 28% per year while mixer capacity stays fixed at $10M per day – would see the total exceed $100B in 2026 if the 28% annual growth rate holds, at which point the backlog would represent more than 27 years of mixer throughput at current capacity.
A meaningful reduction in trapped illicit funds would require either a significant expansion of mixer or privacy tool capacity, a regulatory rollback that reopens exit channels currently blocked by KYT and KYC requirements, or a large-scale coordinated law enforcement action that seizes a significant portion of the backlog directly. None of those three conditions is currently operating at the scale required to meaningfully reduce a $75B backlog.
