QIP: 4
Layer: Applications
Title: 9 Shard Address Mapping
Author: wizeguyy <[email protected]>
Comments-Summary: No comments yet.
Comments-URI: [https://github.com/quainetwork/qips/wiki/Comments:QIP-0004](https://github.com/quainetwork/qips/wiki/Comments:QIP-0004)
Status: Draft
Type: Standards Track
Created: 2023-09-15
License: BSD-2-Clause
This QIP defines an address mapping to be used in a 9 shard hierarchy of the Quai protocol.
This defines the address mapping used in early testnets of the Quai protocol. Early testnets use a lighter 9-shard hierarchy. It has already been concluded that the mainnet should accommodate more than 9 shards, so this mapping is no longer recommended. We documented it here for wallet compatibility with early testnets.
The address space is divided into subsets according to address prefix. The account state for each subset of addresses will be maintained wholly by one and only one shard. Intra-shard transactions may only be processed by the blockchain which maintains that shard. Inter-shard transactions are possible, but the specification for those will be left to another QIP.
All addresses are mapped to exist in one of nine shards according to the MSB of the address. The Address groupings are given below:
| Name | Region | Zone | Min Address | Max Address |
|---|---|---|---|---|
| cyprus1 | region-0 | zone-0-0 | 0x0000000000000000000000000000000000000000 | 0x1DFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF |
| cyprus2 | region-0 | zone-0-1 | 0x1E00000000000000000000000000000000000000 | 0x3AFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF |
| cyprus3 | region-0 | zone-0-2 | 0x3B00000000000000000000000000000000000000 | 0x57FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF |
| paxos1 | region-1 | zone-1-0 | 0x5800000000000000000000000000000000000000 | 0x73FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF |
| paxos2 | region-1 | zone-1-1 | 0x7400000000000000000000000000000000000000 | 0x8FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF |
| paxos3 | region-1 | zone-1-2 | 0x9000000000000000000000000000000000000000 | 0xABFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF |
| hydra1 | region-2 | zone-2-0 | 0xAC00000000000000000000000000000000000000 | 0xC7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF |
| hydra2 | region-2 | zone-2-1 | 0xC800000000000000000000000000000000000000 | 0xE3FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF |
| hydra3 | region-2 | zone-2-2 | 0xE400000000000000000000000000000000000000 | 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF |
This QIP is licensed under the BSD 2-clause license.