Present & Future of Blockchain Ⅲ
summary
QuarkChain describes a sharded, two-layer design: individual shards process transactions plus a root chain that only confirms shard block headers and captures incentives via a tax rate so attacking one shard requires attacking the root. State is partitioned by a shard key derived from addresses to keep many transactions single-shard and make cross-shard payments a first-class, efficient operation. Testnet runs 250 shards, 50 clusters (~129 nodes each, ~6,000 nodes), runs 3M tx per 8 hours and sustains 14,000 TPS while supporting multi-native tokens (QKC genesis token).
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chapters (14)
- 0:00Blockchain scalability intro
- 2:11Vertical to horizontal scaling
- 4:03Vertical scalability limits
- 6:11QuarkChain horizontal scaling
- 7:37Sharding in blockchain
- 9:05Shard keys for state partitioning
- 12:40Shard keys and data distribution
- 18:50Consensus with root chain security
- 24:41Interoperability across shards
- 26:54ERC20 token sharding limits
- 29:07Native tokens for cross-shard
- 33:11Scaling super nodes
- 33:53Public testnet results
- 34:57Q&A
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