"Bitcoin has no cash flow" was Wall Street's favourite line for a decade. It was true. It's getting less true. 2.5 million coins earning zero Look at who owns Bitcoin today. Public companies
"Bitcoin has no cash flow" was Wall Street's favourite line for a decade.
It was true. It's getting less true.
Look at who owns Bitcoin today. Public companies hold more than 1.3 million BTC, and US spot ETFs hold roughly another 1.27 million, which means the most conservative money in this market is sitting on about 2.5 million coins that earn exactly nothing while the Fed keeps rates at 3.75% to 4%.
Every treasury CFO gets the same question from the board now. Our dollars earn 4%. What does our Bitcoin earn?
"Number go up" is a bet. Boards know it.
Lending the coins out was tried. Celsius and BlockFi both filed for bankruptcy in 2022. Genesis went down in January 2023. The yield was real right up until the counterparty wasn't.
Since then most serious holders would rather earn zero than hand their coins to anyone. I don't blame them.
Every big asset went through this. Each one started as something you just hold and ended up as something you can lend.
Central banks got tired of sitting on dead metal in the 80s and 90s. Gold on loan went from about 1,200 tonnes in 1988 to 4,725 tonnes in 1998, close to 15% of official reserves, and the 12-month lease rate averaged around 1.4% (World Gold Council). Tiny. Still enough to turn a vault into an income line.
Stocks got securities lending, which sounds dull until you see that it made a record $15.3 billion in revenue in 2025 on more than $4 trillion of shares and bonds out on loan (EquiLend DataLend). Nobody tweets about it. Everybody collects it.
Treasuries went further and became the collateral under everything else, with the repo market behind SOFR clearing more than $3 trillion a day.
Even ETH has its layer now. About 36% of supply is staked, with a benchmark rate around 2.6%.
Bitcoin is the big asset still missing it.
Two things, mostly. Pay a yield in BTC without the holder giving up the BTC, and let that BTC back a loan without being sold. Trading comes after. And all of it has to keep Bitcoin's own security, or the compliance teams at the big holders will never sign.
A few teams are working on it. Babylon is the largest by BTC staked, at around 40,800 BTC, and paid out in its own BABY token. Two Prime runs a lending-based vault. Stacks took a different route, and right now it has the most institutional names attached of any of them, including a public treasury company and an NYSE-listed exchange, so that's the one I spent the most time on.
Stacks calls these “protocol bonds.” Technically it's a fixed-term staking period, and nobody stands behind it as an issuer. The name stuck because institutions already think in a rate and a term.
The mechanics:
BTC is locked on Bitcoin L1 with a standard timelock script for about six months. It never moves to another chain or to a lender. There is an 'Early exit' option for the BTC (you do forfeit the yield in this case)
It's paired with STX, the Stacks network token, worth 5% of the BTC value and locked for the same term.
Holders earn BTC weekly. The 3% annual yield is a target set before each bond opens, and Stacks doesn't guarantee it. There's no slashing, so the worst case is missed rewards.
At maturity the BTC unlocks, and a new bond opens roughly every month.
The yield comes from Proof of Transfer. Miners bid real BTC on the Bitcoin chain for the right to produce Stacks blocks and get paid in STX. The BTC they bid flows to stakers, bond holders first. Since 2021 that mechanism has paid out more than 4,200 BTC.
The BTC you earn comes from miners.
What made me look twice was who signed up.
UTXO Management, the asset management arm of Nakamoto Inc. (NASDAQ: NAKA), was the first institutional participant and staked from self-custody in the Genesis Bond.
HashKey Cloud, the institutional staking arm of Hong Kong-listed HashKey Group, also staked from self-custody in the Genesis Bond.
21Shares, the ETP issuer with over $6.5 billion in AUM across 60+ products, has been in all three bonds.
Bullish (NYSE: BLSH), one of the ten largest public Bitcoin holders, staked in Bond 3 from BitGo qualified custody.
The Genesis Bond in September took 230 BTC. Bond 3 in November took 1,005. Across the three bonds that's 1,740 BTC.
That's about 0.13% of what public companies hold, which is small. The first Eurobond in 1963 was a $15 million Autostrade deal, and it turned into the international bond market.
Bitcoin is the asset being staked. STX is a capacity requirement that sits next to it.
Every staked BTC has to be paired with STX worth 5% of its value, and that STX stays locked for the full six-month term whether the holder likes the STX price or not. At current prices that's roughly 11,800 STX per BTC (our estimate), so a 1,000 BTC bond locks about 12 million STX for six months.
Bonds run six months and open monthly, so up to six can overlap. If each one were 1,000 BTC, around 70 million STX would be locked at any one time (again our estimate, at current prices).
You can already see it on-chain. Total STX staked went from 392 million after the PoX-5 upgrade in July to 493 million after Bond 2, and Bond 2 alone locked 6.7 million STX.
CoinGecko compares this to a token buyback. Fair comparison, with one difference I'd point out: a buyback is paid for by the protocol's own treasury, while here the demand comes from outside, from Bitcoin holders who want BTC yield. The STX also unlocks when each bond matures, so the effect only lasts if new bonds keep replacing old ones.
A capital market also needs somewhere to borrow against the BTC and somewhere to trade it. On Stacks most of that runs through StackingDAO, Zest and Bitflow.
StackingDAO wraps a staked position into stBTC, a liquid token that keeps earning while it's used elsewhere. It took 483 of the 505 BTC in Bond 2. stBTC supply is around 636 BTC, and 97% of it is posted as collateral on Zest.
Zest is the lending market. At its Q3 peak it passed $80 million in value locked and $42 million in borrows, with about 800 BTC posted as collateral, and it has run more than 1,500 liquidations with no bad debt. It's around $76 million today, with $24 million in borrows, and it paused new lending on October 30 after a security incident at Binance.
Bitflow is the DEX. It handled about 98% of Stacks DEX volume in Q3, and weekly volume peaked around $16 million in late September, which is decent for a Bitcoin layer and tiny next to any major exchange.
So the same Bitcoin can earn the bond yield and back a loan at once. Liquidity is still thin, and that's probably the next thing they need to fix.
The first is an open auction, PoX-6. Today self-custodial staking is whitelisted, with a 50 BTC minimum, and anyone who isn't on the list or doesn't have 50 coins comes in through pools like Xverse or StackingDAO instead. Under PoX-6 anyone can stake from self-custody, and STX bids decide how much BTC each participant gets to stake. Allocation moves from a list to an auction.
The second is self-custodial borrowing: stablecoins against staked BTC, without selling it, while it keeps earning. In TradFi terms that's bond plus repo, where the same asset pays a coupon and backs a loan. Gold and Treasuries both went through that step.
Stacks puts privacy next: confidential transfers with selective disclosure for compliance, because a fund moving size doesn't want every position visible to competitors. Post-quantum security comes after, getting the cryptography ready before quantum machines are a real threat. Both phases are targeted toward 2030.
I'd guess privacy matters more for the next round of institutions than anything on the trading side.
Bond 4 opens around December 3. I'm watching the size, and whether a second top-ten treasury company shows up.
