System Constants
Difficulty, timing, size limits, lease economics, performance certificates.
- DefaultDifficulty:
0xfffff80000000000
- TestDifficulty:
0x0000000000000002
| Constant | Value |
|---|
| Block timestamp tolerance | ±1 hour |
| Vote window | ±5 minutes |
| Attestation skew | ±10 minutes |
| Quorum fallback | 10 seconds |
| Stale conflict sweep | 15 seconds |
| Periodic sync | 10 seconds |
| Sync rate limit | 5 seconds/peer |
| Wallet session timeout | 5 minutes |
| Wallet poller | 5 seconds |
| Directory TTL | 30 minutes |
| Limit | Value |
|---|
| Conflict hashes | 10 max |
| Pending votes/conflict | 10 max |
| Attestations/block | 20 max |
| Gossip message | 256 KB |
| Sync request | 1 MiB |
| Sync response | 10 MiB |
| Sync blocks/session | 10,000 |
| Frontiers/request | 10,000 |
| State key | 128 bytes |
| State value | 64 KB |
| State block | 256 KB |
| Message request/response | 64 KB |
| Parameter | Value |
|---|
| Min duration | 60s |
| Max duration | 31,536,000s (365 days) |
| vCPU rate | 20,000 µXUSD/hour |
| Memory rate | 10,000 µXUSD/GB/hour |
| Disk rate | 1,000 µXUSD/GB/hour |
| Stake | ceil(cost / 5) µXUSD (min 1) |
| XE reward | ceil(cost × R_capped / 1000) µXE (min 1, rate locked at accept) |
| Parameter | Value |
|---|
| BenchmarkIterations | 375,000,000 |
| MemoryTableSize | 8,388,608 (256 MB) |
| MemoryReads | 1,000,000 |
| WorkloadVersion | 3 |
| CertificateValidity | 7 days |
| Parameter | Value |
|---|
| Quorum threshold | 67% |
| Connection manager low | 100 |
| Connection manager high | 400 |
| Connection grace | 1 minute |
| API rate limit (reads, non-POST) | 200 req/s, burst 1,000 |
| API rate limit (writes, POST) | 10 req/s, burst 50 |
| Rate limiter idle TTL | 5 minutes (max 100,000 tracked IPs) |
| Default API port | 8080 |
| Default libp2p port | 9000 |
