Coinbase maturity in other cryptocurrencies
As we discussed at the beginning, the coinbase maturity is a property of Bitcoin and the cryptocurrencies derived from it. Thus, cryptocurrencies like Litecoin they also have this feature. However, they are not the only cryptocurrencies with this ability.
A good example of this is GrinWhere We can see that said cryptocurrency supports coinbase maturity. In fact, in Grin the coinbase maturity is 1000 blocks. This is explained by the short period of time between blocks, which is 1 minute between blocks, so the measure has the same level of security as that of Bitcoin.
And what about Ethereum? Does this figure exist within the second largest cryptocurrency? The answer is: No, it does not exist. Ethereum has instead created the "Uncle blocks", which are blocks that are valid within the consensus, but are not included in the blockchain. In this situation, Ethereum resolves that the invalid block be discarded (at the level of inclusion in the blockchain) but offers a reward for its generation within the network. This reward is less, and it is an incentive for the miners to continue with their work within the network.
The result is that reorganizations and hard forks within Ethereum they are kept to a minimum, the mining power remains stable, and it is unnecessary to use the coinbase maturity for their operation. The problem is that the issuance is much higher, but this is not a problem in Ethereum, where the total issuance of coins is infinite.
As we can see, each blockchain seeks to solve the problem of manipulations to the mining algorithm, hard forks and reorganizations from different approaches, the most secure of all of them being the coinbase maturity and hence it is widely accepted.