## data availability

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### tl; dr

* data availability is the proof that the underlying data behind a particular hash was actually published and can 
* in the case of ethereum, da is one of the primary scaling bottlenecks. protocol-level changes such as sharding and eip-4488 (proto-sharding) are intended to increase da and reduce the cost of storing data on ethereum (the current leading design is **danksharding**, which should happen in several steps).

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### chapters

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* **[celestia](celestia.md)**

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### cool resources

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* **[private data attestation using merkle trees, by ethereum attestation service](https://mirror.xyz/0xeee68aECeB4A9e9f328a46c39F50d83fA0239cDF/BiFUEFJKo6ZsIvPwsP9WPC2UZX0-x_9BdtrvmQo1FwY)**
* **[bitcoin as a data availability layer, by rolkit](https://github.com/rollkit/bitcoin-da)**