Sublime

While Blockstack is a low-entropy carrier of identity, naming, routing discovery, and property rights, Ethereum is a high-entropy platform for Internet money-making, fundraising, and ingenious programming.

There is no limit to nesting, but consensus rules impose a limit on the maximum size of a script in bytes.

Nakamoto came up with a twofold solution. One component was his breakthrough blockchain ledger. Under its design, transactions are arranged in chronologically arrayed blocks that give miners the ability to verify their contents by comparing them to the historical ledger of account balances. Once satisfied, they acknowledge their approval by moving

Thus, while many public blockchains will be used to test ideas, in the fullness of time, they will be implemented by private blockchains – where trust can be validated.

Over time, as the “height” of new blocks increases, so does the computation difficulty for the chain as a whole. By convention, any block with more than six confirmations is considered very hard to change, because it would require an immense amount of computation to recalculate six blocks (plus one new block).