{"id":1000143,"date":"2026-06-17T08:06:41","date_gmt":"2026-06-17T08:06:41","guid":{"rendered":"https:\/\/dev.themarketperiodical.com\/glossary\/blockchain\/"},"modified":"2026-06-17T08:06:41","modified_gmt":"2026-06-17T08:06:41","slug":"blockchain","status":"publish","type":"glossary","link":"https:\/\/themarketperiodical.com\/th\/glossary\/blockchain\/","title":{"rendered":"Blockchain"},"content":{"rendered":"<p>A blockchain functions as a shared database maintained simultaneously across many computers, called nodes. Rather than storing data in a single location controlled by one party, every participating node holds a copy of the entire ledger. This makes the system highly resistant to data manipulation, because altering a record on one node would conflict with the copies held by all others.<\/p>\n<p>Data is grouped into <strong>blocks<\/strong>, each of which contains:<\/p>\n<ul>\n<li>A set of validated transactions or records<\/li>\n<li>A timestamp indicating when the block was created<\/li>\n<li>A cryptographic hash of the previous block, forming the chain<\/li>\n<\/ul>\n<p>Because each block references the one before it, changing any historical record would require recalculating every subsequent block \u2014 a task that is computationally prohibitive on large, well-distributed networks.<\/p>\n<p>Blockchains use <strong>consensus mechanisms<\/strong> \u2014 rules that determine how participants agree on which transactions are valid \u2014 before adding new blocks. Common mechanisms include Proof of Work and Proof of Stake.<\/p>\n<p>Blockchains can be <strong>public<\/strong> (open to anyone, like Bitcoin or Ethereum) or <strong>private\/permissioned<\/strong> (restricted to approved participants, as used by some enterprises). Public blockchains prioritize transparency and censorship resistance; private blockchains prioritize speed and access control.<\/p>\n<p>Beyond cryptocurrency, blockchain technology is explored for supply-chain tracking, digital identity verification, voting systems, and contract execution, though large-scale adoption in these areas is still evolving.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>A blockchain functions as a shared database maintained simultaneously across many computers, called nodes. Rather than storing data in a single location controlled by one party, every participating node holds a copy of the entire ledger. This makes the system highly resistant to data manipulation, because altering a record on one node would conflict with \u2026<\/p>\n","protected":false},"template":"","meta":[],"class_list":["post-1000143","glossary","type-glossary","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/themarketperiodical.com\/th\/wp-json\/wp\/v2\/glossary\/1000143","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/themarketperiodical.com\/th\/wp-json\/wp\/v2\/glossary"}],"about":[{"href":"https:\/\/themarketperiodical.com\/th\/wp-json\/wp\/v2\/types\/glossary"}],"wp:attachment":[{"href":"https:\/\/themarketperiodical.com\/th\/wp-json\/wp\/v2\/media?parent=1000143"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}