Carnet Availability
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Your crypto, accounted for and locked away.

Carnet reads your Ledger accounts and your Coinbase statements, then does the sums in euros, purchase prices included. All it knows are your public addresses: it can look, but it can’t spend.

Check availability What Carnet will never ask you for

Coming soon to Mac, Windows, iPhone and Android · English and French

Carnet’s dashboard: total value, cost basis, unrealised and realised gains, staking income, a one-year value chart and the breakdown by crypto (made-up demo data).

Dashboard

Your wallet app tells you what you own. Carnet also tells you what it cost you.

  1. What it’s all worth, in euros. And where it sits: Ledger or Coinbase.
  2. Its value against what it cost you, over 3 months, 1 year, 3 years or since day one.
  3. Weighted average cost (WAC) or FIFO? Both are always worked out, one click apart.
  4. Staking, counted separately. Network fees too.

The dashboard. Made-up amounts; yours never leave your device.

Getting started

All you have to do.

  1. Paste a public address.

    For each Ledger account, the public identifier shown in Ledger Wallet: an xpub or a receiving address. Bitcoin, Ethereum, Solana, Cardano, XRP, Litecoin, Dogecoin, Bitcoin Cash, Zcash, Arbitrum, Avalanche, BNB Smart Chain, Cronos and HyperEVM. The Ledger itself can stay in its drawer.

  2. Add your Coinbase statements, if you have any.

    Coinbase and Coinbase Pro CSV files hold the one thing the blockchain doesn’t know: what you paid. Importing the same file again won’t create duplicates.

    Coinbase only guarantees access to Coinbase Pro statements until the end of 2026. Download yours before then.

  3. Let Carnet do the books.

    It reads back each blockchain’s history, matches what you sent from Coinbase to its arrival on the Ledger and values everything in euros. Anything uncertain lands in “To review” instead of being swept under the carpet.

Purchase prices

The blockchain knows when. Coinbase knows how much.

Your Ledger sees 0.0035 BTC arrive on 16 December 2021. It has no idea you paid €147 for it two days earlier, on Coinbase. Carnet matches the two lines, and the bitcoin keeps its original purchase price.

Made-up example: a Coinbase purchase matched to its arrival on a Ledger
DateTransactionAccountQuantityPurchase price
14 Dec 2021BuyCoinbase+0.0035 BTC€147.00
16 Dec 2021Sent to LedgerCoinbase−0.0035 BTC–
16 Dec 2021ReceivedLedger+0.0035 BTC€147.00
A made-up example, to show how it works.
Coinbase
The “Transaction history” statement as a CSV, older formats included.
Coinbase Pro
The yearly “Account” reports.
From elsewhere
Valued at the price on the day it arrived and flagged as an estimate; you can enter the real price.

Transactions and cost basis, in detail

Staking

The real yield, not the brochure one.

Carnet finds your staking positions by itself, then measures the yield from the rewards you actually received.

  • Solana stake accounts
  • Cardano delegation
  • Liquid staking (stETH, rETH, JitoSOL…)
  • Ethereum validators
  • Coinbase staking
The “Yield by crypto” table from Carnet’s Staking page: quantity staked, actual yield over 30 days, 90 days and 12 months, and rewards received over 12 months, per crypto (made-up demo data).
The “Yield by crypto” table from the Staking page, up close. Made-up demo data.
  1. Yield over 30 days, 90 days and 12 months, measured on the rewards you really received.
How projections work, over 1 to 10 years. A diagram, no figures.
Diagram of a 10-year projection: the curve with reinvestment gradually pulls away from the straight line without it. today 5 years 10 years with reinvestment without

Estimates, not promises: the yield is assumed to stay constant.

Staking in Carnet, in detail

Cryptos

39 of the top 50 cryptos are supported.

2 more are supported on some of their networks only. The remaining 9 aren’t supported yet. Crypto you keep on Coinbase is tracked through your statements.

  • Supported39
  • Partial2
  • Not yet9
  1. Bitcoin, supported
  2. Ethereum, supported. Staking tracked: validators and liquid staking tokens (stETH, rETH…)
  3. Tether, supported. Ethereum, Solana and Avalanche C-Chain versions; other networks not tracked
  4. BNB, supported
  5. XRP, supported
  6. USDC, supported. Ethereum, Solana, XRP Ledger, Cronos, HyperEVM, Arbitrum One and Avalanche C-Chain versions; other networks not tracked
  7. Solana, supported. Staking tracked: stake accounts and liquid staking tokens (JitoSOL…)
  8. TRON, not yet. Tron network not supported yet
  9. Figure Heloc, not yet. Not a token you hold in a wallet: nothing to track on an address
  10. Zcash, supported
  11. Hyperliquid, supported
  12. Dogecoin, supported
  13. Monero, not yet. Its own network is not supported yet
  14. USDS, supported. Ethereum, Solana and Arbitrum One versions; other networks not tracked
  15. WhiteBIT Coin, supported. Ethereum (ERC-20) version; other networks not tracked
  16. Chainlink, supported. Ethereum, Solana, Cronos, HyperEVM, Arbitrum One, Avalanche C-Chain and BNB Smart Chain versions; other networks not tracked
  17. Cardano, supported. Staking tracked: delegation and rewards
  18. LEO Token, supported. Ethereum (ERC-20) version; other networks not tracked
  19. Rain, supported
  20. NEAR Protocol, not yet. Its own network is not supported yet
  21. Stellar, not yet. Stellar network not supported yet
  22. Bitcoin Cash, supported
  23. Litecoin, supported
  24. Ethena USDe, supported. Ethereum, Solana, HyperEVM, Arbitrum One, Avalanche C-Chain and BNB Smart Chain versions; other networks not tracked
  25. Uniswap, supported. Ethereum, Arbitrum One, Avalanche C-Chain and BNB Smart Chain versions; other networks not tracked
  26. Dai, supported
  27. Avalanche, supported
  28. Sui, not yet. Sui network not supported yet
  29. Canton, not yet. Canton network not supported yet
  30. USD1, supported. Ethereum, Solana and BNB Smart Chain versions; other networks not tracked
  31. Gram (prev. Toncoin), partial. Ethereum and BNB Smart Chain versions only; TON network not supported
  32. Hedera, not yet. Hedera network not supported yet
  33. Tether Gold, supported
  34. Global Dollar, supported. Ethereum, Solana and Arbitrum One versions; other networks not tracked
  35. Bittensor, not yet. Bittensor network not supported yet
  36. Shiba Inu, supported
  37. Cronos, supported
  38. Quant, supported. Ethereum (ERC-20) version; other networks not tracked
  39. PayPal USD, supported. Ethereum, Solana and Arbitrum One versions; other networks not tracked
  40. Ethena, supported. Ethereum, Solana, Arbitrum One and Avalanche C-Chain versions; other networks not tracked
  41. Bitway, supported. Ethereum and BNB Smart Chain versions
  42. OKB, partial. Ethereum (ERC-20) version only; X Layer network not supported
  43. Ripple USD, supported. Ethereum and XRP Ledger versions
  44. Circle USYC, supported. Ethereum, Solana and BNB Smart Chain versions
  45. Aave, supported. Ethereum, Solana, Arbitrum One, Avalanche C-Chain and BNB Smart Chain versions; other networks not tracked
  46. Ondo US Dollar Yield, supported. Ethereum, Solana, Arbitrum One and BNB Smart Chain versions; other networks not tracked
  47. Worldcoin, supported. Ethereum (ERC-20) version; other networks not tracked
  48. Pump.fun, supported
  49. Ondo, supported
  50. BlackRock USD Institutional Digital Liquidity Fund, supported. Ethereum, Solana, Arbitrum One, Avalanche C-Chain and BNB Smart Chain versions; other networks not tracked

Ranked by market cap as of 20 October 2026, data from CoinGecko.

The full list, crypto by crypto

Security

What Carnet will never ask you for.

Carnet only sees your public addresses. That’s the point. A public address lets you read a wallet, not empty it. Carnet signs no transactions, doesn’t connect to your Ledger and never talks to a server run by its publisher.

Your 24 words stay on paper. Carnet doesn’t ask for them and wouldn’t accept them. If an app or a person asks you for them, someone is trying to rob you.

What it keeps, encrypted, on your device

  • Your public addresses and xpubs.
  • Imported transactions: dates, quantities, amounts.
  • Your corrections and settings.

What it doesn’t ask for, or doesn’t keep

  • Your name, IBAN and card numbers: dropped when statements are imported.
  • An account or an email address: there isn’t one to create.
  • What you do in the app: no analytics, no crash reports.

Technical details

Vault
A single file, encrypted with your password. Argon2id for the key, XChaCha20-Poly1305 for the contents.
Locking
Automatic after 10 minutes of inactivity (adjustable from 1 to 240 minutes), and, on a computer, whenever you close the window.
Network
The interface has no network access. Only the core, written in Rust, connects over HTTPS to public blockchain and price services.
Tor
Optional, on a computer: Tor Browser or the tor service. One circuit per wallet, and no direct connection while it’s on.
Audit
No independent security audit yet. Better you hear it from us.

What leaves your device, and where it goes

Questions

Before you decide.

Do I need a Ledger?

Carnet is designed for Ledger (it understands the JSON block from the Advanced section of Ledger Wallet), but all it does is read public addresses, so addresses from another wallet work just the same. The Ledger never needs to be plugged in.

What about other exchanges?

Only Coinbase and Coinbase Pro can be imported for now. Crypto received from another exchange still shows up in your wallet, valued at the price on the day it arrived and flagged as an estimate; you can enter the amount you actually paid.

Does Carnet work out my taxes?

No. Carnet calculates your cost basis two ways, weighted average cost (WAC) and FIFO (first in, first out), along with your gains, as a guide only. It doesn’t apply the official formula of article 150 VH bis of the French tax code and doesn’t fill in any forms. One option treats swaps between cryptos as realising no gain, as French rules provide. For your tax return, talk to a professional or use a specialist tool.

What if I forget my password?

It can’t be recovered, and that is precisely what keeps anyone else out of your vault. Your funds aren’t affected (they stay on the blockchain) and your wallets will sync again into a new vault, but you would have to redo your imports and manual corrections.

How much does Carnet cost?

The distribution terms (any price, and the licence) will be set out at the public release. Either way, Carnet has no accounts and no ads, and it sells no data, because it collects none.

All the questions

Carnet is coming soon.

On its way to Mac, Windows, iPhone and Android. No sign-up, and your data stays on your device.

Check availability