Cant we just agree

on YouTube ↗47m

" summary

Consensus differentiates blockchains by trade-offs: proof-of-work mining gives probabilistic finality and resists Sybil attacks but needs huge hash power and targets ~10-minute blocks; proof-of-stake replaces energy with locked stake but still relies on chain selection rules; Raft (leader-based) and PBFT (three-phase, O(n^2) messaging) serve permissioned networks with crash vs Byzantine assumptions; Tendermint/Swirlds and DAG approaches (Hashgraph-style gossip about gossip, Avalanche’s metastability sampling) show how federated or high-throughput designs reduce communication or converge faster.

AI-written summary · about

" chapters (10)

1. 0:00Start
2. 3:41DOUBLE SPEND PROBLEM
3. 12:49PRIVATE BLOCKCHAINS
4. 14:06BYZANTINE FAILURE
5. 18:14FEDERATED DISTRIBUTED LEDGERS
6. 21:48SIBYLS ATTACK
7. 23:01PROOF-OF-WORK
8. 26:13NAKAMOTO CONSENSUS
9. 38:40PRACTICAL EXCERCISE
10. 42:37TAKE-OFFS

" related talks

• 43mAll Together Now: An Introduction to Distributed ConsensusTess Rinearson · Craft Conference 2019
• 02h 44mBlockchain consensus mechanismsIvan Visconti · International School on Algorand Smart Contracts 2022
• 56mA sledgehammer to crack a nut: why blockchain is not (always) a good ideaPetr Kuznetsov · Hydra 2022
• 42mBeyond Blockchain: Convergent ConsensusMike Anderson · Strange Loop 2022
• 23mBlockchainTamas Blummer · GOTO Copenhagen 2015
• 28mDistributed LedgerMinisha Murugan · Voxxed Days Singapore 2018
• 33mByzantine generals: How the blockchain solves the distributed consensus...Federico Squartini · Codemotion Rome 2018
• 07mA Walk Through Distributed ConsensusJack Zampolin · GopherCon 2019