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SIMD-0313 Drop unchained merkle shreds

ReviewCoreStandardcreated 2025-06-30

Author: Ashwin Sekar

As the new shred format is being sent by all clients, this feature deprecates the old shred format.

Feature gate

The account below is the gate. Its state is decoded from the account data on each cluster, so it reflects the chain rather than the proposal text.

5KLGJSASDVxKPjLCDWNtnABLpZjsQSrYZ8HKwcEdAMC8

mainnetActivatedslot 354,672,000
testnetActivatedslot 344,828,256
devnetActivatedslot 394,848,000
The document and the chain disagree.

the document says Review while its feature gate is active on mainnet since slot 354,672,000

Followed at the tracking issue

What the proposal covers

Parsed from the canonical proposal · pull request