Is Tendermint proof-of-stake?

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I couldn't understand if this tendermint protocol is proof-of-stake or something like proof-of-lock?

https://tendermint.com/static/docs/tendermint.pdf

EralpB

Posted 2017-08-03T07:36:27.487

Reputation: 113

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What is proof-of-lock? Vlad Zamfir refers to Temdermint as "a security-deposit based proof-of-stake system".

– Sergei Tikhomirov – 2017-08-03T12:14:32.833

@SergeiTikhomirov Since you have to deposit or "lock" your coins I thought maybe it is called something other than PoS. In Ethereum's PoS I think all coins are eligible for PoS, and there is no concept of "locking". Although I didn't research it thoroughly. – EralpB – 2017-08-04T13:07:39.713

Answers

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Yes, it looks like Proof-of-Stake or at least something very similar, and suffers from similar issues, for example:

Note that this does not preclude a 2/3 majority of validators from publishing a blockchain fork after they had unbonded and sold their coins to an unsuspecting party. This is called a long-range double-spend attack. A user can avoid long-range attacks by syncing their blockchain periodically within the bounds of the unbonding period.

MeshCollider

Posted 2017-08-03T07:36:27.487

Reputation: 8 735

Asked: 2017-08-03T07:36:27.487

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Active: 2017-08-04T02:09:12.903