Solv Protocol's SolvBTC product has more than 20,000 BTC staked ($1.24 billion) deployed across 10 major blockchain networks.
Chainbase's aim is to provide unbiased and transparent data that is not controlled by a small number of dominant companies.
Multiple Ethereum NFT funds were also among the backers, marking their first investment in a Bitcoin-focused company.
Saltwater closed its seed round on the heels of acquiring gaming developers Maze Theory, Nexus Labs and Quantum Interactive.
Portal aims to offer a decentralized infrastructure for peer-to-peer swapping of BTC across different blockchains without the need for intermediaries, which heighten the risk of hacks.
Tune.FM provides musicians with a platform to receive micropayments for streaming in its native JAM token (JAM).
TRES currently services clients with combined assets worth $19 billion, helping them manage, monitor and reconcile their digital asset activity across over 100 layer-1 and layer 2-blockchain networks
Decentralized infrastructure is the use of blockchain technology and token incentives to build physical networks so other projects don't need to incur the costs of buying and running their own equipment.
Wormhole, which was recently separated from parent Jump Trading Group after it scaled back its crypto operations, is a developer platform which allows different blockchain networks to communicate with each other.