slip-0044: add CERA (coin type 68291)

[cera-chain]

Summary

Register coin type 68291 for CERA (BIP-44 / SLIP-0044).

Project

• Name: CERA
• Symbol: CERA
• Website: https://cera.cash
• Wallet: https://wallet.cera.cash
• Public wallet implementation: https://github.com/cera-chain/cera-wallet
• Protocol documentation: https://cera.cash/docs/cera-chain/index.html
• Maintainer: CERA Protocol Maintainers — cerachain2026@gmail.com

Derivation

• Path: m/44'/68291'/0'/0'/0'
• Mnemonic: BIP-39, 24 words (256-bit entropy), English wordlist
• Curve / SLIP-0010: Ed25519 with hardened derivation at each level (no non-hardened path segments)
• Documentation: https://github.com/cera-chain/cera-wallet/blob/main/backend/docs/mnemonic-derivation-and-coin-type.md

Existing implementation

A reference wallet (TypeScript, backend + browser frontend) already derives keys with this path. Tests assert derivation_path === "m/44'/68291'/0'/0'/0'".

Checklist

• Row added in numeric order in slip-0044.md
• Coin type not already used by another entry
• Public repo and docs available for review