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BTC/USD
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Listed by TellorTellor explorer ↗Tellor · Reporter and validator
Blocksize on Tellor
Crypto prices from 9,000+ pairs across 70+ exchanges, tested against Tellor's consensus with every update.
- 9,000+pairs
- 99.99%node uptime
What we run on Tellor
- Reporter
- Validator on Tellor Layer
Tellor at a glance · from today's FAQ
What is the Tellor Network?
Tellor is a decentralized oracle that brings off-chain data on-chain through a network of staked reporters. Anyone who stakes the network's token can submit data; instead of checking every value upfront, Tellor uses an optimistic model: submitted data is assumed valid but can be challenged during a dispute window, and reporters who submit bad data lose their stake. This makes manipulation expensive and keeps the network permissionless.
Why Tellor's model is different
Most oracles validate data through upfront consensus. Tellor takes a different approach: data is submitted by staked reporters and held accountable after the fact, through disputes. A reporter who submits an inaccurate value can be challenged and slashed, so economic stake enforces accuracy, with no gatekeeper. It's a crypto-native, permissionless way to keep data honest.
Blocksize on Tellor
Blocksize is a validator on the Tellor Network. We stake the network's token and submit real-time crypto market data on-chain, backing it with our own stake. The data we report is drawn from the same aggregated market feed we deliver to our customers off-chain.
You can find our validator here.
01 Created
Built from the whole market.
- Real-time aggregationLiquidity is scattered. Prices are aggregated between 70+ exchanges live.
- Outlier detectionIndividual trades are filtered using confidence intervals.
- Dynamic sourceMarkets that show sustained drift, staleness, or unreliable volume are dynamically excluded.
- Contingency logicWe have clearly defined rules in place to address rare situations where data is delayed or missing.
- Governance by designAll methodology rules are overseen by the Blocksize Data Committee.
02 Pushed
Our node, our endpoints.
Blocksize reporter → Tellor Layer → weighted median, bridged on-chain.
03 Checked · Dispute window
Tested by consensus, every update.
Our report enters a power-weighted median and stays open to disputes for the dispute window.
Our accuracy is not a claim we make. Tellor measures it each time we submit.
04 Secured
Every minute, on the record.
Node uptime 99.99% per network. The status page lists each downtime minute instead of a badge.
05 Recognised
On Tellor's own pages.
Tellor lists Blocksize on a page it runs. Open it and check.
5 layers, trade to chain
From a trade on 70+ exchanges to Tellor's consensus.
Trades and quotes from 70+ venues. Liquidity is scattered; no venue alone is the market.
9,000+ pairs, outliers filtered, drifting venues down-weighted, rules under the Data Committee.
Submits our value to Tellor Layer.
Helps secure Tellor Layer.
Reports are combined by power and stay open to disputes.
Why it matters to Tellor
What vertical integration gives a network.
No hand-offs between trade and chain
The price leaves our aggregation and reaches the network through our own nodes. Nothing in between can round, delay or replace it.
Every update meets consensus
Each submission is compared with the other sources before it counts. Our accuracy is measured by the network, update after update, not by us.
Fewer parties in the path
Own publisher nodes, own RPC endpoints, own keys. A shorter path has fewer places to attack and fewer parties to trust.
One team watches every layer
Exchange outages are absorbed in aggregation; node and RPC failover is ours. The status log shows every minute.
One name on every layer
If a value is wrong, it is ours at every step, and networks penalise bad data. Incentives point one way.
An independent operator
A first-party source with its own aggregation and infrastructure adds an independent voice to each network's consensus.
Chainlink
Pyth
RedStone
Band
Supra
API3
SEDAFor Tellor teams