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https://bitcoin.stackexchange.com/a/13347/27951
Based upon the answer here, it seems there's values per block with each Prev_Hash and also Tx_Root
There doesn't seem to be much documentation for how to access these. How can I find the Prev_Hash and the Tx_Root of the most recent block for example?
Thanks
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Look at a block on a block explorer.
Here the Prev_Hash is called 'Previous Block' and the Tx_Root is called 'Merkle Root'.
For more technical info, take a look at the Protocol Documentation.
Awesome, thanks. Can I use getblock to access this via the Blockchain API? And also how can I find the hash of the latest block? Thanks! – Anthony – 2016-04-16T01:06:32.077
I'm not an expert on Blockchain's API, but their documentation is here: https://blockchain.info/api/blockchain_api. For the latest block, it looks like you can use: https://blockchain.info/latestblock.
Whoops, I meant to say use getblock to access this via the Bitcoin API, typo. – Anthony – 2016-04-16T01:14:04.353
You mean the Bitcoin Core RPC command getblock? Yes, it reports those values. – Pieter Wuille – 2016-04-17T08:32:11.347
Do you want to access the values from code? Or just see them? You can see the values on a block explorer, but to decode the values from a raw block you'd need to understand the message protocol format.
– morsecoder – 2016-04-16T00:50:58.260I'd like to see them for now but additionally access them by code eventually. I've found the
getblockmethod which can be used to display the merkle tree, but how do I find theblockHashparameter to pass to that method, for say the last block or last 10 blocks? Not sure where I can find thoseblockHashes – Anthony – 2016-04-16T00:58:03.700