OP_CAT — the cosmic Bitcoin cat
opcode 0x7e
BIP-347
4% → ₿ holders
payout ~10:00
DISABLED IN 2010 · NEVER FORGOTTEN

The cat Satoshi left behind is back — and it pays in Bitcoin.

$OP_CAT is Bitcoin's most legendary opcode reborn as a cosmic cat. Paired to BTC. A 4% trading fee streams back to holders as real Bitcoinevery 10 minutes, on block-time. 🐾

🐾 NBoTsybVAUk79KihbrVhQbydWrQAjT4mUr61nN1Wcat
▼ SCROLL
--:-- NEXT PAYOUT

The cat is always about to pay you.

This timer never stops. Every time it hits zero, the window's trading fees are claimed in BTC and sent to every holder — then it starts again. No buttons. No claiming. Block-time is the only schedule the cat respects.

144 payouts / day
4% fee recycled
100% to holders
paid in , always
LORE
The Legend

Every opcode has a story.
This one has nine lives.

OP_CAT is the oldest inside joke in Bitcoin — an original Satoshi opcode with "CAT" literally in its name, banished in 2010 and memed about ever since. We gave the cat a body.

🧬

Satoshi ships a cat

Bitcoin v0.1 launches with OP_CAT baked into Script — opcode 0x7e. Its job: concatenate two items on the stack into one. The most innocently named opcode in the whole codebase, living quietly inside Bitcoin from day one.

🚫

The cat gets banished

Satoshi quietly disables OP_CAT, worried that stacking CATs could balloon memory and crash nodes. No funeral. No goodbye. One commit, and the cat was locked outside the consensus rules — where it sat, staring in through the window, for over a decade.

📣

"Bring back the cat"

Bitcoin devs formally propose resurrecting the opcode — BIP-347, the first serious push to reactivate OP_CAT via soft fork. Crypto Twitter turns it into a rallying cry, and the cat becomes the mascot of Bitcoin's next era.

🐱

The cat comes back

You can't keep a cat out forever. $OP_CAT is the meme made flesh — a cosmic, star-dusted, Bitcoin-eyed cat that does what the opcode always promised: it concatenates you to Bitcoin. Every. Ten. Minutes.

bitcoin-script — opcat@mainnet
STACK
Tokenomics

Simple stack. No tricks.

Two items on the stack: the cat, and Bitcoin. OP_CAT concatenates them.

4%

Trading fee, fully recycled

Every trade carries a 4% fee. None of it sits in a treasury black hole — all of it flows back to the people holding the cat.

BTC

Paired to Bitcoin

$OP_CAT trades against BTC — not a stablecoin, not chain gas. The cat and the coin, joined on the stack.

10:00

Block-time cadence

Payouts every 10 minutes — the same rhythm as a Bitcoin block.

144

Payouts per day

Around the clock, every day, as long as the chain keeps ticking.

0

Staking, locks, claims

Nothing to do. Hold the cat, receive the Bitcoin.

DOCS
Docs — How Rewards Work

Every 10 minutes, the cat pays out.

Bitcoin produces a block roughly every 10 minutes. OP_CAT distributes rewards on the same clock. Here's the full loop, start to finish.

🔁

Trades happen

Every buy and sell of $OP_CAT carries a 4% trading fee, collected automatically at the moment of the swap.

⏱️

Fees accumulate

Collected fees pool up over a 10-minute window — one Bitcoin block-time. No manual triggers, no admin buttons.

Claimed in BTC

At the end of each window, the accumulated fees are claimed and converted into BTC — the only asset the cat's eyes have ever seen.

🐾

Sent to holders

The BTC is distributed pro-rata to every holder — your share of supply is your share of the payout, straight to your wallet.

📖 The fine print (the good kind)

The reward engine runs on a fixed cycle: every 10 minutes, all trading fees collected during that window are claimed in BTC and sent to holders pro-rata. If you hold 1% of the eligible supply, you receive 1% of that window's BTC payout.

// per 10-minute cycle
your_btc_reward = window_fees_in_btc × ( your_balance ÷ eligible_supply )
  • Automatic. No claiming, no staking, no dashboards to babysit. Rewards land in your wallet on their own.
  • Pro-rata. Payouts scale exactly with your holdings at distribution time. More cat, more Bitcoin.
  • Paid in real BTC. Not points, not a reflection of the token itself — Bitcoin.
  • Block-time cadence. ~144 payout cycles per day, mirroring Bitcoin's own heartbeat.
  • Sell the cat, lose the stream. Only wallets holding $OP_CAT at distribution time are included in that cycle.
FAQ
FAQ

Questions the cat gets asked a lot

What is OP_CAT, actually?
Two things. In Bitcoin, OP_CAT is an original opcode (0x7e) that concatenates two stack items — shipped by Satoshi in 2009, disabled in 2010, now famous again thanks to BIP-347. Here, $OP_CAT is the meme token that gives the legend a face: a cosmic cat with Bitcoin for eyes that pays its holders in BTC.
How do I earn Bitcoin by holding?
Just hold $OP_CAT in your wallet. Every 10 minutes, the 4% trading fees collected in that window are claimed in BTC and sent to all holders pro-rata — proportional to your share of the supply. Nothing to stake, lock, or claim manually.
Why every 10 minutes?
Because that's Bitcoin's heartbeat — a new block roughly every 10 minutes. The cat pays out on block-time out of respect. That's about 144 reward cycles every single day.
Where does the 4% fee go — all of it?
The 4% trading fee is the fuel for the reward engine. Each 10-minute cycle, the window's accumulated fees are converted to BTC and redistributed to holders. Trading volume in, Bitcoin out.
Is $OP_CAT affiliated with Bitcoin Core or BIP-347?
No — $OP_CAT is a community meme token celebrating the opcode and its lore. We're fans of the cat, not the authors of the soft fork. (But if OP_CAT gets reactivated, expect fireworks. 🎆)
OP_CAT
OP_CAT × OP_YOU

Get concatenated to Bitcoin.

Copy the address, grab the cat, and let block-time do the rest. BTC rewards start flowing on the very next 10-minute cycle.

NBoTsybVAUk79KihbrVhQbydWrQAjT4mUr61nN1Wcat

₿ Address copied — the cat approves