KoinlyticsBlockchains do one thing: agree on the order of transactions across untrusted parties. Every consensus mechanism trades off decentralization, speed, and finality. Here is the map.
Nakamoto family (PoW)
- Bitcoin PoW. Miners compete via hashrate. Probabilistic finality (~6 blocks / 60 min).
- Ethash / Kawpow. Variants targeted at GPUs (before The Merge).
Longest-chain PoS
- Ethereum PoS (Gasper). Validators propose blocks, others attest. Finality within 2 epochs (~13 min).
- Cardano Ouroboros. Slot-based PoS with stake pool operators.
BFT family (instant finality)
- Tendermint (Cosmos, Injective, dYdX v4). Rounds of prevote / precommit / commit. Blocks final in one round.
- CometBFT. Modern Tendermint.
- HotStuff (used in Aptos, Sui variants). Streamlined BFT with pipelining.
DAG / parallel
- Narwhal + Bullshark (Sui, Aleo). Mempool as DAG, ordering separately. Enables parallel execution.
- Hedera Hashgraph. Gossip-about-gossip.
Hybrid / optimized
- Solana Proof of History. Verifiable clock + Tower BFT. Sub-second slots.
- Solana Alpenglow (2025). Next-gen consensus reducing finality to ~150ms.
- Avalanche. Repeated subsample voting; fast probabilistic finality.
Delegated (DPoS)
- EOS, Tron. Token holders vote for a small set of block producers.
What each optimizes for
- PoW: maximum decentralization, worst throughput.
- PoS Gasper: balance between decentralization and speed.
- BFT (Tendermint, HotStuff): instant finality, needs small validator set.
- DAG / DPoS: highest throughput, most centralization risk.