Ostrel Summit Lisbon
Three days of protocol talks, builder workshops and the year's roadmap, by the river in Lisbon.
From €290 · student and builder passes available
Vote openOP-41: Raise the block compute limit by 25%
Final in under a second. Open to everyone.
Ostrel is an open, proof-of-stake network run by 412 independent validators. Build apps that settle before the page refreshes, or pick a wallet and start using the ones already here.
Scaffold an app on testnet in one command
npx create-ostrel-app@latestMainnetSimulated · sample data
Latest finalised block214,906,318
- Transactions
- 1,002
- Finalised in
- 0.37 s
- Last 10 blocks
- 2,620 tx/s
- Block time
- 400 ms
- Validators
- 412
The network in numbers
- Median time to finality
- 0.42s
- Transactions per second, 24 h average
- 3,180
- Median transaction fee
- 0.0004OSL
- Active validators in 58 countries
- 412
Sample dataAs of
Get started
Three ways in
Whether you are holding your first token or shipping your tenth program, start from where you are.
New here
What Ostrel is, how to keep your tokens safe and where to start.
Use the network
Pick a wallet for your device, stake to secure the network and follow it live.
Build on it
Ship your first program in an afternoon, then apply for a grant to take it further.
How it works
Five layers, each doing one job
From the app in your hand down to the wire between validators. Select a layer to see what it does.
Layer 01
Applications
Wallets, exchanges, payments, games and social apps. They call programs on the network and show people the result — usually in under a second.
- Passkeys and session keys for wallet-light apps
- Readable names instead of long addresses
- Every listed app in the ecosystem directory
Ecosystem
Already running on the network
18 teams build wallets, exchanges, payments, data services and games on Ostrel.
- Mainnet
Tidepool
An order-book exchange that matches on-chain in one block.
- Mainnet
Lantern
A mobile wallet that explains every transaction before you sign it.
- Mainnet
Ferrous
Dedicated RPC nodes with archive history and websocket streams.
- Mainnet
Sextant
Price and reference data, signed by independent publishers.
For developers
Send a transaction and watch it finalise
SDKs for TypeScript, Rust and Python, a local network with instant blocks and a faucet for testnet tokens. Every sample on this page runs against testnet.
- Program templates for payments, tokens and games
- Fork mainnet state onto your laptop for tests
- Free public endpoints, with dedicated RPC from ecosystem providers
import { Client, Keypair, osl } from "@ostrel/sdk";
const client = new Client(process.env.OSTREL_RPC_URL ?? "https://rpc.testnet.ostrel.example");
const payer = Keypair.fromEnv();
// Send 1.5 OSL and wait until the block is final.
const receipt = await client.transfer({
from: payer,
to: "mara.osl",
amount: osl("1.5"),
});
console.log(receipt.status, receipt.finalizedInMs); // "final" 412Meet in person
Where the community gathers next
Builder Days Seoul
A three-day build sprint with mentors from the core team and a demo day at the end.
Ostrel IRL Mexico City
An evening of short talks and demos from teams building in Latin America.
Grants
Funding for the teams that make the network useful
Grants from 20,000 to 500,000 OSL, paid in milestones and decided by an elected committee. Every grant is published.
Governance
Changes are proposed in public and decided by stake
Raise the block compute limit by 25%
Yes 71.4% · No 18.2% · Turnout 46.8% of stake · closes 6 October 2026
Fund an independent audit of the Tern validator client
Yes 64.9% · No 22.7% · Turnout 29.1% of stake · closes 2 October 2026
News
Latest from the network
The Harbour upgrade is live on mainnet
Parallel execution for independent transactions, a 30% cut in median fees and a new fee market for busy programs.
Measuring finality honestly
Why we publish the median and the 99th percentile, and what our finality figure does and does not include.
Meet grants cohort four
Twenty-two teams, from payment links to a third validator client, and what they will ship by March.
Your first program, live on testnet today
The quickstart takes about ten minutes. When you are ready for mainnet, the grants committee is ready for you.