Our take
Chorus One
Chorus One delivers robust non-custodial proof of stake validator infrastructure tailored for institutional delegates, digital asset custodians, and protocol foundations. Founded in Switzerland, the company operates enterprise-grade validator nodes across more than forty blockchain networks, emphasizing high availability, distributed node topology, and protocol research. Because all operations remain strictly non-custodial, delegators retain full custody over their private keys and withdrawal authorizations at all times.
While Chorus One maintains a commanding presence across major ecosystems including Ethereum, Solana, Cosmos, and Polkadot, retail token holders typically encounter its infrastructure indirectly through public validator delegation or integrated custody platforms. Institutional clients seeking bespoke service level agreements, dedicated whitelabel validator clusters, or advanced MEV-boost configurations will find a sophisticated technical partner, though minimum deployment commitments and native unbonding rules apply across all integrations.
Tangem
Tangem offers a distinctive approach to cold storage by packaging a secure element into a durable bank card form factor. Founded in Switzerland in 2017, the company designed its hardware without internal batteries, charging ports, or connecting cables. Users interact with their digital assets by tapping the smart card against an NFC-enabled mobile phone running the companion application. The architecture stands out for offering a seedless recovery model alongside traditional BIP39 mnemonic passphrases. When configured without a seed phrase, the private key is generated directly inside the secure element and cloned securely across companion backup cards. This setup removes the risk of exposing paper backups to theft, though transaction validation relies on the paired smartphone screen. Tangem delivers practical and highly portable self custody for everyday cryptocurrency holders.