The default series: Reserve series
Placeholder. The default series shown here is a placeholder and will be replaced in a later release. Its name, id and rules will change; the ideas behind it stay.
A series is a published set of rules. The Reserve series is the one built into the node: poo init follows it unless told otherwise.
It is designed to hold value and settle large payments for decades.
Series id
fe52c1ac4178cc691c871524e53c4d1d2614a06b9dc68da13a19376b6591f139
The id is the hash of every rule below. Tools name the default series by this full id only, so a look-alike series cannot pass for it.
Its rules
| Supply | Fixed: 32,768 mints of 10¹⁴ units each |
|---|---|
| Pools | 1,024 pools of 32 mints. The mints of a pool share one ledger. |
| Hash | SHA-512/256 |
| Minimum strength | Entries 20 bits, layers 24 bits. Weight comes from layers only. |
| Key algorithms | Ed25519, ML-DSA-65, ML-DSA-87, SLH-DSA-SHA2-128s, SLH-DSA-SHA2-256s |
| Address types | threshold, hashlock |
| Witness ceiling | 131,072 bytes (128 KiB) |
| Issuer | None |
Why these choices
- Fixed supply
- Anyone can check the whole supply from the definition, and no one can add to it. In all there are 3.28 × 1018 units, which still fits a signed 64-bit integer, so totals and balances stay exact in every tool.
- 32,768 mints
- A mint is a natural unit for holding and settling large amounts. Holders are not limited: a mint's units split across any number of addresses.
- Pools of 32
- 1,024 pools keep the cost of syncing a pool and checking a peer's weight modest, and each node follows only the pools it needs.
- SHA-512/256
- A NIST standard from the most studied hash family, with a 128-bit collision margin. No existing mining fleet targets it, so rented SHA-256 hardware cannot be turned on it.
- Post-quantum keys
- Ed25519 for everyday payments. ML-DSA-65 and ML-DSA-87 for holdings that must outlast quantum computers. SLH-DSA rests only on the hash, so it holds even if lattice schemes fall. The list is fixed for ever.
- Threshold and hashlock addresses
- k-of-n custody for treasuries and cold storage; hashlocks for swaps, escrow and settlement between parties. Under the 128 KiB ceiling a witness holds up to 16 of 16 ML-DSA-65, ML-DSA-87 or SLH-DSA-SHA2-128s signatures, or 4 SLH-DSA-SHA2-256s.
- No issuer
- A reserve cannot depend on a key that could be lost, stolen or pressured. The series id, published in several places, is its identity.
A default, not a rule
Following the default series is node policy: each node's own choice. A node can follow it, other series, or both. See running other series.
Follow it
poo init # writes a node policy that follows the default series
poo node # starts the node; peers on :7733, local commands on 127.0.0.1:7732