Skip to content

Latest commit

 

History

History
40 lines (27 loc) · 1.05 KB

purpose-field.md

File metadata and controls

40 lines (27 loc) · 1.05 KB
Raw

Purpose Field for Nexus

BIP-43

The BIP-43 introduced the concept of purpose field, which is used to indicate the purpose for a derivation path. BIPs reserved the codes from 1 to 10000, and SLIPs reserved the code from 10001' to 19999'

ckb_purpose for Nexus

Nexus will use the purpose codes from 0x80434b43(ASCII code of "CKB")

// ASCII code of CKB is 434b42(in hex)
'CKB'
  .split('')
  .map((c) => c.charCodeAt(0).toString(16))
  .join('') === '434b42';

// the purpose level must be hardened,
// so it should be larger than 0x80000000
0x80000000 + 0x434b42 === 0x80434b42;

To make it more readable, we will use ckb_purpose' to indicate 0x434b42'

m / ckb_purpose' / *

And for the 1st purpose, we will use ckb_purpose 1' to indicate 0x80434b43'(ckb_purpose' + 1)

m / ckb_purpose 1' / ...

In Use Proposes

  • m / 44' / 309' / 0' / change / index: full ownership
  • m / ckb_purpose 1' / account' / index: rule-based ownership