Duplicated hash values in mining reward

by Dennis Kriechel   Last Updated August 13, 2019 23:27 PM - source

This transaction is contained in two MainChain-Blocks:


On Blockexplorer there is a note of this anomaly:


As I understand, those 50 BTC are lost because only one of the rewards can be redeemed.

If so there will never be 21 million Bitcoin available, because those, or more of this sort, are missing?

Answers 2

This is a known bug in the early days of bitcoin.

Was fixed by BIP-30 https://github.com/bitcoin/bips/blob/master/bip-0030.mediawiki

There is a discussion here: https://bitcointalk.org/index.php?topic=216938

And yes, 50+50 bitcoins are missed forever.

In fact, there are much more missed bitcoins. For example, 2500 bitcoins were gone to nowhere in block 0000000000000449ee5b94ba7a051caffff5c23d6a03335f6e20e3985b5ffa61

June 11, 2014 11:49 AM

this is mine that i won in a lottery freebitcoin round 198 last march 2019

August 13, 2019 23:01 PM

Related Questions

Getting the wrong txid for coinbase transactions

Updated April 15, 2018 19:27 PM

Coinbase transaction id vs transaction hash

Updated July 09, 2017 14:27 PM

Unconfirmed transactions?

Updated December 22, 2017 00:27 AM

What does this comment in Chainparams.cpp mean?

Updated July 23, 2018 10:27 AM

Off-chain transactions with Coinbase

Updated July 15, 2017 13:27 PM