XE uses standard cryptographic primitives with cross-implementation compatibility between Go and JavaScript (tweetnacl/blakejs).
Key Generation
Ed25519 via crypto/rand or deterministic from 32-byte seed.
Signing Contexts
- Block hashing — SHA-256 of canonical bytes
- Block signing —
ed25519.Sign(privateKey, hash) - Vote signing — ed25519 over canonical vote encoding
- Attestation signing — ed25519 over
SHA-256(leaseHash || timestamp) - Chat signing — ed25519 detached signature over message envelope
- Directory signing — ed25519 over
account + timestamp
Proof of Work
Anti-spam only, not consensus.
result = blake2b_8(nonce_LE || blockHash)
valid = result >= difficulty- DefaultDifficulty:
0xfffff80000000000(~2M attempts, ~1s) - TestDifficulty:
0x0000000000000002(instant) - Nonce: little-endian; result compared as big-endian
Functions: ComputePoW, ComputePoWConcurrent, ComputePoWWithContext, ValidatePoW
Server-side fallback: POST /pow endpoint.