The Blobs Are Coming: Dencun is scheduled to go live on the Goerli testnet at 6:32 UTC on January 17, 2024, which will be Goerli's final upgrade before core teams cease support after this upgrade proceed smoothly, the Sepolia and Holesky testnets are set to activate Dencun in the following weeks, and to stay informed about network upgrade announcements, you can subscribe to <a href="https://blog.ethereum.org/2024/01/10/goerli-dencun-announcement#subscribe">email alerts</a>.&nbsp;The Dencun network upgrade is planned for activation on the Goerli testnet at <a href="https://www.timeanddate.com/worldclock/converter.html?iso=20240117T063200&amp;p1=1440&amp;p2=37&amp;p3=136&amp;p4=237&amp;p5=923&amp;p6=204&amp;p7=671&amp;p8=16&amp;p9=41&amp;p10=107&amp;p11=28">6:32 UTC on January 17, 2024</a>. This upgrade introduces several changes, notably the introduction of ephemeral data blobs with EIP-4844, also referred to as "protodanksharding." This aims to reduce Layer 2 (L2) transaction fees.&nbsp;Following the <a href="https://blog.ethereum.org/2023/03/28/shapella-mainnet-announcement">Shapella upgrade</a> from last year, Dencun will initially deploy on the Goerli testnet, followed by Sepolia and Holesky, pending no significant issues. Once Dencun operates smoothly on all three testnets, a mainnet activation will be scheduled.Dencun marks the final upgrade for Goerli. Post-activation on the mainnet, the Goerli testnet will no longer receive support from client and EF testing teams. For more details, refer to this <a href="https://blog.ethereum.org/2023/11/30/goerli-lts-update">previous announcement</a>.&nbsp;<a href="https://coinmarketcap.com/currencies/ethereum/">Ethereum</a>'s imminent "Dencun" upgrade, also known as "Cancun-Deneb," will commence testing on the Goerli testnet on January 17, as <a href="https://github.com/ethereum/execution-specs/pull/860/commits/8a92d6d21f38d498922a1bb78d32e40a8f207653">confirmed</a> by an official note on the Ethereum GitHub repository.The upgrade will expand to the Sepolia testnet on January 30 and Holesky on February 7. The Ethereum team has yet to announce a date for Dencun's implementation on the mainnet.&nbsp;The Dencun upgrade encompasses various tools designed to reduce fees, introduce new functionalities for bridges and staking pools, and limit the use of self-destruct operations in smart contracts.A significant feature of Dencun is the incorporation of Ethereum Improvement Proposal (EIP) 4844, also known as "proto-danksharding." This will enable Layer-2 (L2) rollup networks to temporarily store certain transaction data using a new format called "blobs." These blobs can be deleted after 18 days, significantly reducing transaction fees on L2s. This upgrade is eagerly anticipated for L2 networks like <a href="https://coinmarketcap.com/currencies/arbitrum/">Arbitrum</a> and <a href="https://coinmarketcap.com/currencies/optimism-ethereum/">Optimism</a>.&nbsp;Other notable proposals in the Dencun upgrade include:<ul><li><a href="https://eips.ethereum.org/EIPS/eip-1153">EIP-1153</a>: Transient storage opcodes</li><li><a href="https://eips.ethereum.org/EIPS/eip-4788">EIP-4788</a>: Beacon block root in the EVM</li><li><a href="https://eips.ethereum.org/EIPS/eip-4844">EIP-4844</a>: Shard Blob Transactions</li><li><a href="https://eips.ethereum.org/EIPS/eip-5656">EIP-5656</a>: MCOPY - Memory copying instruction</li><li><a href="https://eips.ethereum.org/EIPS/eip-6780">EIP-6780</a>: SELFDESTRUCT only in same transaction</li><li><a href="https://eips.ethereum.org/EIPS/eip-7044">EIP-7044</a>: Perpetually Valid Signed Voluntary Exits</li><li><a href="https://eips.ethereum.org/EIPS/eip-7045">EIP-7045</a>: Increase Max Attestation Inclusion Slot</li><li><a href="https://eips.ethereum.org/EIPS/eip-7514">EIP-7514</a>: Add Max Epoch Churn Limit</li><li><a href="https://eips.ethereum.org/EIPS/eip-7516">EIP-7516</a>: BLOBBASEFEE opcode</li></ul>&nbsp;Ethereum upgrades typically undergo several months of testing before deployment to the mainnet. The prior upgrade, codenamed "Shapella," started testing in February and was launched on the mainnet in April. Shapella was a significant upgrade that marked Ethereum's transition from proof-of-work to proof-of-stake.&nbsp;About <a href="http://buildbear.io/">BuildBear</a>:BuildBear is a platform for testing dApps at scale, for teams. It provides users with their own private Testnet to test their smart contracts and dApps, which can be forked from any EVM chain. It also provides a Faucet, Explorer, and RPC for testing purposes.<blockquote>BuildBear aims to build an ecosystem of tools for testing dApps at scale for the teams.</blockquote>Connect with us on <a href="https://twitter.com/_BuildBear">Twitter</a> | <a href="https://www.linkedin.com/company/build-bear/">LinkedIn</a> | <a href="https://t.me/Web3_dApp_Developers">Telegram</a> | <a href="https://github.com/BuildBearLabs">GitHub</a>

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This upgrade introduces several changes, notably the introduction of ephemeral data blobs with EIP-4844, also referred to as protodanksharding. This aims to reduce Layer 2 (L2) transaction fees.

Ethereum's Dencun Upgrade to Begin Testing on Goerli Testnet

Let’s get started then, Shall we?

Let’s get started then, Shall we?

Test DApps at Scale.