Polygon spinoff Avail launches testnet bridge to Ethereum, potentially allowing low cost ‘validium’ layer 2s to be created.
Blockchain network Avail has launched a testnet data availability bridge to Ethereum, according to a July 7 announcement. Once testing is completed, the bridge will allow developers to easily create “validiums” or low-cost layer 2s that do not store full transaction data on Ethereum, the announcement stated., but was spun off as an independent project in March. Polygon’s co-founder, Anurag Arjun, is also the founder of Avail.
To get around this problem, some networks have opted to write only the validation proofs of each transaction to the base layer, while storing the full transaction data off-chain. This produces a type of network called a “validium.” For example, StarkEx features a validium mode that stores data with a data availability committee instead of on Ethereum.
According to the announcement, the new bridge allows developers to create custom validiums quickly and easily by storing their transaction data on the Avail network, eliminating the need to create their own DAC or proof-of-stake data availability network. When a user tries to withdraw cryptocurrency from layer 2 back to the base layer of Ethereum, the Avail bridge will transmit an attestation that the data is available on Avail, allowing the withdrawal to occur.
“Today’s launch of the Data Availability attestation bridge marks a major advancement in our mission to optimize blockchain scalability and efficiency,” said Arjun. “By enabling rollup constructions to run in validium, optimistic chains, and volition modes, we are not only reducing costs but also paving the way for a more inclusive and efficient layer-2 and layer-3 ecosystem.”as zero-knowledge proof rollups are more widely used.
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