A Utility-BackedLayer-1
The Rust-built Layer-1 where Koppa (Ϙ) is backed by real on-chain utility, not just payments.
Backed by real on-chain utility
SUM Chain pairs fast, cheap payments with storage, verifiable compute, messaging, and credentials, all native to the Layer-1.
Fast and final
3-second blocks with deterministic finality in about 18 seconds (6 confirmations). Transactions settle while you wait.
Near-zero fees
A typical transfer costs around 0.001 Ϙ, so fees never eat the amount you send.
Proven cryptography
Ed25519 signatures and Blake3 hashing under Proof of Authority consensus.
Native decentralized storage
A Layer-1 Proof-of-Retrievability engine with on-chain Merkle proofs. Archive nodes earn Koppa for serving files; cheats get slashed. Live on mainnet.
Verifiable AI compute
OmniNode settles verifier-signed inference attestations on-chain. Pay once for compute, prove it forever.
Identity and access
On-chain access lists, encrypted messaging (SRC-201), and document-credential token families for tax, equity, and healthcare.
Pure Rust
Built entirely in Rust with zero C or C++ dependencies. Memory-safe, fast, auditable.
Powered by pure Rust
SUM Chain is built entirely on the stable Rust toolchain. No C, C++, Python, Go, JavaScript, or Solidity. Memory-safe, auditable, and fast.
// Send 10.5 Koppa with a minimal fee
let tx = Transaction::new(
chain_id,
sender.address(),
recipient,
koppa_to_base("10.5"), // 10.5 Ϙ
koppa_to_base("0.001"), // fee: 0.001 Ϙ
nonce,
);
let signed = tx.sign(&sender)?;
node.broadcast(signed).await?;Ed25519
Elliptic-curve signatures
Blake3
Fast modern hashing
libp2p
Peer-to-peer networking
Gossipsub
Block and tx propagation
Proof of Authority
Stake-weighted epoch rotation
RocksDB
Persistent state storage
Tools and apps, ready to use
A growing suite for users, developers, and validators.
Live now
Coming soon
TypeScript SDK
Fully-typed SDK for querying balances and sending transactions.
Mobile App
Native iOS and Android apps for managing Koppa on the go.
Get started in minutes
Start using Koppa
Open SUMailet Web
Create a non-custodial wallet in your browser. No download, no extension.
Receive and send
Share your address to receive Ϙ. Transfers reach finality in about 18 seconds for a typical fee near 0.001 Ϙ.
Track everything
Look up addresses, balances, and transactions in real time on the explorer.