<a href="https://nandibear.com/nist-csrc-bitcoin-is-a-fork-and-bitcoin-cash-is-the-original-blockchain"><img alt="bitcoin-is-a-fork-and-bitcoin-cash-is-the-original-blockchain-nist-csrc-national-institute-of-standards-and-technology-computer-security-resource-center-nandibear.com-luke-2018" src="https://nandibear.com/img/bitcoin-is-a-fork-and-bitcoin-cash-is-the-original-blockchain-nist-csrc-national-institute-of-standards-and-technology-computer-security-resource-center-nandibear.com-luke-2018.png" style="height:425px; max-width:none; width:100%" /></a>

<p>According to <a href="https://www.nist.gov/">NIST</a> National Institute of Standards and Technology - <a href="https://csrc.nist.gov/">CSRC</a> Computer Security Resource Center:</p>

<blockquote><em>In July 2017, approximately 80 to 90 percent of the Bitcoin computing power voted to incorporate Segregated Witness (SegWit, where transactions are split into two segments: transactional data, and signature data), which made it possible to reduce the amount of data being verified in each block. Signature data can account for up to 65 percent of a transaction block, so a change in how signatures are implemented could be useful. When SegWit was activated, it caused a hard fork, and all the mining nodes and users who did not want to change started calling the original Bitcoin blockchain Bitcoin Cash (BCC). Technically, Bitcoin is a fork and Bitcoin Cash is the original blockchain. When the hard fork occurred, people had access to the same amount of coins on Bitcoin and Bitcoin Cash.</em></blockquote>

<p><a href="https://csrc.nist.gov/CSRC/media/Publications/nistir/8202/draft/documents/nistir8202-draft.pdf">Blockchain Technology Overview</a> - page 41 of 57:</p>

<img alt="bitcoin-is-a-fork-and-bitcoin-cash-is-the-original-blockchain-nist-csrc-national-institute-of-standards-and-technology-computer-security-resource-center-page-41-nandibear.com-luke-2018" src="https://nandibear.com/img/bitcoin-is-a-fork-and-bitcoin-cash-is-the-original-blockchain-nist-csrc-national-institute-of-standards-and-technology-computer-security-resource-center-page-41-nandibear.com-luke-2018.jpg" style="height:auto; max-width:none; width:100%" />

<h2><center>Blockchain Technology Overview</center></h2>

<p><strong>Source:</strong> <a href="https://csrc.nist.gov/CSRC/media/Publications/nistir/8202/draft/documents/nistir8202-draft.pdf">https://csrc.nist.gov/CSRC/media/Publications/nistir/8202/draft/documents/nistir8202-draft.pdf</a></p>

<p><strong>Wayback Machine:</strong> <a href="https://web.archive.org/web/20180129042518/https://csrc.nist.gov/CSRC/media/Publications/nistir/8202/draft/documents/nistir8202-draft.pdf">https://web.archive.org/web/20180129042518/https://csrc.nist.gov/CSRC/media/Publications/nistir/8202/draft/documents/nistir8202-draft.pdf</a></p>

<p><strong>Nandibear.com PDF:</strong> <a href="https://nandibear.com/docs/bitcoin-is-a-fork-and-bitcoin-cash-is-the-original-blockchain-nist-csrc-national-institute-of-standards-and-technology-computer-security-resource-center-nandibear.com-luke-2018-nistir8202-draft.pdf">https://nandibear.com/docs/bitcon-is-a-fork-and-bitcoin-cash-is-the-original-blockchain-nist-csrc-national-institute-of-standards-and-technology-computer-security-resource-center-nandibear.com-luke-2018-nistir8202-draft.pdf</a></p>

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