# bitcoin heartbeats

- [Overview](/bvm/bitcoin-heartbeats/overview.md)
- [Chain heartbeats](/bvm/bitcoin-heartbeats/chain-heartbeats.md)
- [Key metrics](/bvm/bitcoin-heartbeats/chain-heartbeats/key-metrics.md)
- [Bitcoin's 5 levels of scalability](/bvm/bitcoin-heartbeats/chain-heartbeats/bitcoins-5-levels-of-scalability.md)
- [Wallet heartbeats \[WIP\]](/bvm/bitcoin-heartbeats/wallet-heartbeats-wip.md)
- [Dapp heartbeats \[WIP\]](/bvm/bitcoin-heartbeats/dapp-heartbeats-wip.md)