Phantom
Phantom Technologies
Phantom is a non-custodial self-custody wallet that started as the reference wallet for the Solana ecosystem and evolved into a multichain wallet: beyond Solana it supports Ethereum, Base, Polygon and Bitcoin, with private keys staying on the user's device protected by a seed phrase. It includes swaps (including cross-chain), SOL staking, a dApp browser and WalletConnect. Available as a browser extension and mobile app, it is not fully open-source: the code is not published in full, although the company publishes audit reports and runs a public bug bounty.
Data & conditions
| Fund custody | Self-custody (funds in your control) |
|---|---|
| Type | Software (hot wallet) |
| Source code | Partly open-source |
| Recovery | Seed phrase 12 parole (BIP-39) |
| Bitcoin-only | No |
| Supported chains | Solana, Ethereum, Base, Polygon, Bitcoin |
| Built-in swap | Yes |
| Built-in staking | Yes |
| dApp browser | Yes |
| WalletConnect | Yes |
| Built-in fiat on-ramp | Yes |
| Security audits | Kudelski Security, Least Authority |
| Segment | B2C |
| MiCA / License status | Nessuna (wallet self-custody non-custodial) |
Strengths
- Best-in-class Solana experience, now multichain (Solana, Ethereum, Base, Polygon, Bitcoin); built-in cross-chain swap, SOL staking and dApp browser.
- Self-custody: funds stay in your wallet — the platform cannot touch them.
- No KYC: usable without identity verification.
- Public security audits.
Weaknesses
- Not fully open-source (code not entirely public); native staking limited to SOL; seed phrase is the user's responsibility.
- No notable sovereignty drawback documented.
Verdict
Score 4.4/5, very strong profile. In its favour: best-in-class Solana experience, now multichain (Solana, Ethereum, Base, Polygon, Bitcoin); built-in cross-chain swap, SOL staking and dApp browser. The trade-off to weigh: not fully open-source (code not entirely public); native staking limited to SOL; seed phrase is the user's responsibility.
On the Sovereignty lens the score is 4.2/5 (very strong): the strength is fund control (5.0/5), while trustless / auditability (3.8/5) is the weak link.
Promp's editorial rating based on real fees and net annual cost. Promp reviews third-party products independently.
"Sovereignty" rating: score computed on privacy/anonymity (30%), fund control (20%), censorship resistance (20%), trustless/auditability (20%) and costs (10%). Same data, different weights.
FAQ
Is Phantom custodial?
No. Phantom is a non-custodial self-custody wallet: your private keys and seed phrase stay on your device, Phantom Technologies has no access to your funds.
Which blockchains does Phantom support?
Phantom is multichain: it supports Solana, Ethereum, Base, Polygon and Bitcoin (plus other networks added over time), with swaps including cross-chain across them.
Is Phantom open source?
Not entirely: the code is not published in full, so it does not offer complete source transparency. However the company publishes public audit reports (e.g. Kudelski Security, Least Authority) and runs a public bug bounty.
Sources
- Official service page Custodia · Blockchain · Swap · Staking Data verified on Jun 20, 2026
- coinbureau.com Blockchain · Funzioni · Open source Data verified on Jun 20, 2026
- cryptoslate.com Azienda · Security audit · Open source Data verified on Jun 20, 2026