Your keys. Your chain. No custodian.
Marketcap Portfolio is a non-custodial, multi-chain decentralized wallet. Keys are generated and signed on your own device — never on our servers, never with a third party. Connect to any dApp, hold any asset across 30+ networks, and stay sovereign.
- 100%
- Self-custody
- 30+
- Networks supported
- 0
- Servers in the signing path
Connect to the networks you already use
Every feature a decentralized wallet should have. None it shouldn't.
Marketcap Portfolio strips a wallet down to what actually matters: self-custody, verifiable code, and direct access to the chain.
A transaction, with no middleman
From dApp to chain — your wallet is the only thing in between. No relayer, no custodian, no signing-as-a-service.
dApp / browser
Untrusted · Read-only
REQUEST · unsigned tx
Marketcap Wallet
Self-custody · Local sign
BROADCAST · signed tx
Blockchain
Public · Permissionless
What self-custody protects you from
Most wallets you've used are actually accounts on someone else's server. Marketcap Portfolio puts you back on the right side of "not your keys, not your coins."
What a non-custodial wallet does not protect you from
Phishing dApps that convince you to sign a malicious approval. Writing your seed phrase on a sticky note. Storing it in iCloud. Coercion. Self-custody hardens the cryptographic surface — your operational discipline still matters. We ship a plain-language security primer to help.
Open standards, top to bottom
No proprietary key formats. No vendor lock-in. Every choice is interoperable with the wider Web3 stack.
See a transaction from create to broadcast
No funds, no risk — a faithful replica of the Marketcap Portfolio wallet flow. Walk through wallet creation, dApp connection, and on-chain signing in your browser.
Wallet · iOS / Android / Web / Desktop
What the signer shows
Idle. Waiting for a transaction from the wallet UI.
The difference is in who holds your keys
Most "wallets" are exchange accounts in disguise. Marketcap Portfolio is the real thing — your keys live on your device, not on a corporate ledger.
| Capability | Marketcap Wallet | Custodial exchange | Browser extension |
|---|
Questions, answered honestly
If you can break our security model, we want to know. responsible-disclosure@marketcapportfolio.net pays up to $50K.
Self-custody. Without compromise.
Be your own bank — but with tools built like one.
A wallet that keeps the chain accessible, your keys local, and your sovereignty intact. Twelve words, one device, zero custodians.