The data attestation bridge, which is still in its testnet phase, helps secure data off-chain. It’s connected to Ethereum, and can be used by bothStoring data on Ethereum can be expensive, so Avail aims to be a solution for layer 2s and 3s to publish data off-chain, to reduce the high transaction fees that often come from posting data on the main Ethereum blockchain.
The challenge of handling the data and setting up separate networks for data storage is known as the ”data availability problem,” or DA – an arena that includes developing cryptographic systems to prove that the data exists and that it’s right. “The data attestation bridge establishes a direct connection between the L2 rollup’s data and the L1 via Avail’s off-chain data availability layer,” Avail said in a press release.
The bridge is one component of what Avail will offer in the layer 2 ecosystem. In the longer term, Avail wants rollups to launch entirely on top of its network. These networks could include so-called“When an L3 or a validium sends the transaction data to Avail, the data attestation bridge provides the attestation on Ethereum,” Anurag Arjun, the founder of Avail, told CoinDesk. This then proves to Ethereum that “whatever data was submitted by the rollup to Avail is actually available.
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