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Frankencoin
How to

How urble
CHF Savings work.

Understand what happens to your CHF, where the variable yield comes from, what supports Frankencoin and which risks remain.

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TransparentSee how it works

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Self-custodialYou stay in control

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Variable yieldUp to 3.3% net

CHF savings goal in the urble app with a live balance earning 2.63% per year

From your bank to growing savings.

Six simple steps from CHF to earning yield with urble.

  1. 1

    You transfer CHF

    Send CHF to your personal IBAN. You can also set up a standing order.

  2. 2

    CHF becomes ZCHF

    Our payment partners convert your CHF into Frankencoin (ZCHF).

  3. 3

    ZCHF reaches your wallet

    The ZCHF is delivered to your self-custodial urble wallet.

  4. 4

    Enters the Savings Module

    With your consent, ZCHF is placed in the Frankencoin Savings Module.

  5. 5

    Yield starts

    After the waiting period, your deposited ZCHF starts earning variable yield.

  6. 6

    Withdraw anytime

    Remove ZCHF from the Savings Module and convert back to CHF to your bank.

Where does the yield come from?

Your yield comes from activity in the Frankencoin protocol.

Your ZCHF is not lent directly to a borrower.

  1. Protocol users
    / borrowers
  2. Fees
  3. Frankencoin
    protocol
  4. Equity
    pool
  5. Your variable
    yield

The Savings Module calculates yield and pays it from the protocol's equity pool.

  • VariableThe savings rate can increase, decrease or fall to zero.

  • Governance-setThe rate is determined through Frankencoin's on-chain governance process.

  • Principal-basedYield is calculated on your deposited ZCHF principal in the Savings Module.

What supports Frankencoin?

Built with multiple layers designed to absorb stress before it reaches your savings.

  • Collateralised positions

    Eligible digital assets are used as collateral when new ZCHF is created.

  • Over-collateralisation

    Positions are intended to hold more collateral value than the amount of ZCHF created.

  • Equity pool

    Protocol income and capital form an additional layer that can absorb certain system losses and also funds saver yield.

If something goes wrong

Multiple layers are designed to absorb losses.

  1. 1

    Position reserve

    Losses are first absorbed by the reserve associated with the affected position.

  2. 2

    Equity pool

    If the position reserve is not sufficient, the protocol's equity provides a second layer of protection. This equity is funded by Frankencoin Pool Share (FPS) holders, who earn returns but also absorb losses when needed.

  3. 3

    General minter reserves

    As a final line of defence, reserves from other positions can be used to cover remaining losses.

Understand the risks

Safeguards reduce risk. They do not remove it.

  • ZCHF can move away from CHF 1

    ZCHF is designed to track CHF, but there is no guaranteed or legally enforceable 1:1 redemption rate.

  • Collateral can lose value

    Supporting assets may fall in value faster than liquidations and reserves can absorb.

  • Liquidity can become limited

    Conversion to fiat CHF may be slower, more expensive or temporarily unavailable under stressed conditions.

  • Regulation and tax can change

    Treatment of stablecoins, DeFi and yield can vary by jurisdiction and over time.

  • Smart contracts and infrastructure can fail

    Software, blockchain, bridge or connected-system failures can lead to loss.

  • Governance can make harmful decisions

    Protocol parameters and approved collateral can change through governance.

  • Self-custody comes with responsibility

    You are responsible for protecting wallet access, recovery information and devices.

Different roles. Clear responsibilities.

urble

Wallet, savings-plan experience, access to the Savings Module, balance and progress display.

DFXMt Pelerin

Payment partners

Identity verification, payment route, CHF receipt and conversion between CHF and ZCHF.

Frankencoin

ZCHF, collateral and reserve mechanics, Savings Module, governance and smart contracts.

Verify it yourself

Explore the sources and data behind Frankencoin.

Last updated August 20, 2026

How urble CHF Savings work

urble CHF Savings lets you move CHF from your bank into ZCHF, the Frankencoin stablecoin, and place it in the Frankencoin Savings Module from your self-custodial urble wallet. This guide explains where the variable yield comes from, what supports ZCHF and the risks that safeguards cannot remove.

ZCHF is a digital asset designed to track CHF. It is not fiat currency, legal tender or a bank deposit. Its value and yield are not guaranteed, and traditional deposit protection does not apply.

From your bank to growing savings

There are six steps from sending CHF to earning variable yield with urble:

  1. You transfer CHF. Send CHF to your personal IBAN. You can also set up a standing order.
  2. CHF becomes ZCHF. Our payment partners convert your CHF into Frankencoin (ZCHF).
  3. ZCHF reaches your wallet. The ZCHF is delivered to your self-custodial urble wallet.
  4. It enters the Savings Module. With your consent, ZCHF is placed in the Frankencoin Savings Module.
  5. Yield starts. After the waiting period, your deposited ZCHF starts earning variable yield.
  6. Withdraw anytime. Remove ZCHF from the Savings Module and convert it back to CHF for your bank account.

Self-custody means you stay in control of your wallet and its access information. It also means you are responsible for protecting your wallet access, recovery information and devices.

Where does the yield come from?

Your yield comes from activity in the Frankencoin protocol. Your ZCHF is not lent directly to a borrower. Protocol users and borrowers pay fees into the protocol; the Savings Module calculates yield on your deposited ZCHF principal and pays it from the protocol's equity pool.

  • Variable: the savings rate can increase, decrease or fall to zero.
  • Governance-set: the rate is determined through Frankencoin's on-chain governance process.
  • Principal-based: yield is calculated on your deposited ZCHF principal in the Savings Module.

What supports Frankencoin?

Frankencoin is built with multiple layers designed to absorb stress before it reaches your savings.

  • Collateralised positions: eligible digital assets are used as collateral when new ZCHF is created.
  • Over-collateralisation: positions are intended to hold more collateral value than the amount of ZCHF created.
  • Equity pool: protocol income and capital form an additional layer that can absorb certain system losses and also fund saver yield.

Key protocol data is publicly visible on-chain, including ZCHF supply, collateral, reserves, equity, activity and the current savings rate. You can view live Frankencoin data.

If something goes wrong

Multiple layers are designed to absorb losses:

  1. Position reserve: losses are first absorbed by the reserve associated with the affected position.
  2. Equity pool: if the position reserve is not sufficient, the protocol's equity provides a second layer of protection. This equity is funded by Frankencoin Pool Share (FPS) holders, who earn returns but also absorb losses when needed.
  3. General minter reserves: as a final line of defence, reserves from other positions can be used to cover remaining losses.

These mechanisms are designed to protect the backing and stability of ZCHF. They reduce risk, but cannot eliminate it entirely.

Understand the risks

You can lose part or all of the value of your savings. Safeguards reduce risk; they do not remove it.

  • ZCHF can move away from CHF 1: ZCHF is designed to track CHF, but there is no guaranteed or legally enforceable 1:1 redemption rate.
  • Collateral can lose value: supporting assets may fall in value faster than liquidations and reserves can absorb.
  • Liquidity can become limited: conversion to fiat CHF may be slower, more expensive or temporarily unavailable under stressed conditions.
  • Regulation and tax can change: treatment of stablecoins, DeFi and yield can vary by jurisdiction and over time.
  • Smart contracts and infrastructure can fail: software, blockchain, bridge or connected-system failures can lead to loss.
  • Governance can make harmful decisions: protocol parameters and approved collateral can change through governance.
  • Self-custody comes with responsibility: you are responsible for protecting wallet access, recovery information and devices.

Different roles, clear responsibilities

  • urble: wallet, savings-plan experience, access to the Savings Module, balance and progress display.
  • Payment partners: identity verification, payment route, CHF receipt and conversion between CHF and ZCHF.
  • Frankencoin: ZCHF, collateral and reserve mechanics, Savings Module, governance and smart contracts.

Verify it yourself

Explore the sources and data behind Frankencoin: