Stackr

Collective discipline, encoded

Stack together.
Save with certainty.

Private savings circles, enforced onchain. Contribute in USDC, secure your commitment with reusable cirBTC, and receive your turn.

Start stacking See how money moves
150% protected Invite-onlyBuilt on Arc.
Circle protected150%
0102030405SHARED LEDGERUSDCcontribution · payout₿$
Protection locked$600cirBTC reference value
Round payout$500USDC · position 01
USDC contributionsReusable cirBTC collateralRecoverable defaultsNo protocol fees

One circle. Two instruments.

A savings promise with visible protection.

USDC moves through the circle. cirBTC stays allocated in the Stackr vault and only covers a contribution when a member does not.

01

Create privately

Choose 3–12 members, cadence, contribution, and payout order.

02

Lock cirBTC

Every position secures 150% of the circle’s maximum future obligation.

03

Stack USDC

Members make the same recurring contribution through a public ledger.

04

Receive your turn

A complete round releases USDC to its scheduled recipient.

Equal protection. Different turns.

Every member locks the same maximum-protection allocation. The collateral stays yours while healthy and becomes reusable inside Stackr when the circle completes.

Required reference value150% × contribution × (members − 1)
5 members · 100 USDC cadence600 USDC
Position 01
150%
Position 02
150%
Position 03
150%
Position 04
150%
Position 05
150%
Equal cirBTC reference value at formation
HealthyTop upRestoredStabilize

Designed for the difficult week

A missed contribution does not misdirect the pot.

Stackr sells only enough cirBTC through its testnet backstop to replace the missing USDC. Unsafe recipient payouts remain held while cure, replacement, or fair settlement runs onchain.

  • Healthy at 150%, top-up below 135%
  • Stabilization available below 120%
  • Unused collateral returns to your vault balance

Narrow promises. Visible rules.

USDC savings. cirBTC protection.

USDCContribution and payout
cirBTCReusable protection
OnchainRecovery and claims
Built on Arc.

Save among people you trust

Bring stronger rails to your circle.

Enter Stackr