Bitcoin risk

First, the risk of technology-based encryption algorithm to crack.

Second, the risk of competitive coins. Such as ETH EOS and so on.

Third, irrationality 51% attack risk.
Such as the threat to the sovereign currency.

Fourth, the dependence on the outside is greater than gold and silver.
For example: There must be electricity.Need a network.
The conditions are basically close to modern banks.

Fifth, block 1M limit will not affect the application to limit its uncertaintyset.

Finally, there may be other unpublished and discovered technical vulnerabilities