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Re:Launch HN: Stacks (YC S14) – The first SEC-qualified cryp... by tromp on Thursday July 11, 2019 @05:08PM (#20415868)
Has the BlockStack Proof-of-Work been chosen yet?
Re:Launch HN: Stacks (YC S14) – The first SEC-qualified cryp... by muneeb on Thursday July 11, 2019 @05:36PM (#20416106)
See the "Tunable Proofs" discussion in Seciton 2 of the whitepaper 2.0 https://blockstack.org/whitepaper.pdf

Initially, we rely heavily on proof-of-burn when the native hashpower on the network is lower. We're currently looking at memory-hard hash functions for the native PoW part.

Re:Launch HN: Stacks (YC S14) – The first SEC-qualified cryp... by tromp on Thursday July 11, 2019 @06:34PM (#20416511)
> memory-hard hash functions

You may want to look at asymmetric memory-hard PoW as well (instant memoryless verification)