Replying to Avatar Mike

Is this what people are doing? Creating unspendable outputs? Isn’t that just burning bitcoin to store data?
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Super Testnet 8mo ago

Yes, there are two groups of people doing this:

(1) Stamps: https://www.ledger.com/academy/glossary/bitcoin-stamps

(2) Citrea: https://citrea.xyz/clementine_whitepaper.pdf

The Citrea paper is quite dense but I am referring to this sentence in particular: "A total of 144 bytes are committed, split into 3 outputs, one OP RETURN with 80 bytes of data and two taproot outputs with their script pubkey as the 32 byte data, making these outputs unspendable."

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protozoan numbness 8mo ago

Why is Citrea doing that?

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Super Testnet 8mo ago

They created a sidechain model which requires some data about the sidechain to be accessible to users. Their model also involves a federation and I think it is perfectly reasonable to have each of the federation members store a copy of that data, but instead Citrea opted to dump it on bitcoin's blockchain to reduce the chance of it disappearing.