How can I know that my transaction has been confirmed on the longer chain?

by Shuheng Zheng   Last Updated October 08, 2019 23:27 PM - source

This question is more on the theory of bitcoin. Let's say I receive a coin in a tx which has been confirmed with 6 blocks following the block that's been confirmed. How can I be sure that there's no other place in cyberspace that has a longer chain confirming a different transaction that transfers this coin to somebody else?

Tags : blockchain

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