{"id":14315,"date":"2026-05-27T07:40:59","date_gmt":"2026-05-27T07:40:59","guid":{"rendered":"https:\/\/lemonn.co.in\/blog\/glossary\/blockchain-technology\/"},"modified":"2026-05-27T07:40:59","modified_gmt":"2026-05-27T07:40:59","slug":"blockchain-technology","status":"publish","type":"glossary","link":"https:\/\/lemonn.co.in\/blog\/glossary\/blockchain-technology\/","title":{"rendered":"Blockchain Technology"},"content":{"rendered":"

Blockchain technology<\/a> is a distributed digital ledger that records transactions across multiple computers in a way that makes the records tamper-resistant. Each transaction is grouped into a block, and blocks are chained together in chronological order, creating a permanent, transparent, and decentralised record.<\/p>\n

What Is Blockchain?<\/h2>\n

A blockchain is essentially a shared database maintained by a network of computers (nodes) rather than a central authority. When a new transaction occurs:<\/p>\n

1. It is broadcast to the network
\n2. Nodes verify the transaction using a conse<\/a>nsus mechanism
\n3. The verified transaction is grouped with others into a block
\n4. The block is added to the existing chain with a cryptographic link to the previous block
\n5. The record becomes permanent and visible to all network participants<\/p>\n

Key Properties of Blockchain<\/h2>\n

– **Decentralised**: no single entity controls the ledger; thousands of nodes hold copies
\n– **Immutable**: once recorded, transactions cannot be altered without changing all subse<\/a>quent blocks and gaining network consensus
\n– **Transparent**: all network participants can view the full transaction history (in public blockchains)
\n– **Cryptographically secured**: each block contains a hash of the previous block, making tampering detectable<\/p>\n

Types of Blockchains<\/h2>\n

– **Public blockchain**: open to anyone; Bitcoin<\/a> and Ethereum<\/a> are examples; fully decentralised
\n– **Private blockchain**: access restricted to authorised participants; used by enterprises and governments
\n– **Consortium blockchain**: controlled by a group of organisations; common in banking and supply chains<\/p>\n

Applications Beyond Cryptocurrency<\/a><\/h2>\n

– **Finance**: cross-border payments, trade finance, digital assets<\/a>
\n– **Supply chain**: tracking goods from manufacturer to consumer
\n– **Healthcare**: secure sharing of patient records
\n– **Government**: land records, voting, identity management<\/p>\n

Practical Example<\/h2>\n

The Indian state of Telangana explored blockchain for land records. Each property transaction is recorded on a blockchain, creating a tamper-resistant ownership history. This prevents fraud, makes title searches faster, and reduces disputes.<\/p>\n

Key Takeaways<\/h2>\n

– Blockchain is a distributed, tamper-resistant ledger maintained across multiple computers without a central authority
\n– Transactions are grouped into blocks and chained cryptographically, making manipulation detectable
\n– Public blockchains (like Bitcoin) are open to all; private and consortium blockchains are permissioned
\n– Applications extend beyond crypto to land records, supply chains, healthcare, and financial services
\n– In India, blockchain is being explored for UPI<\/a> settlements, government record-keeping, and digital identity<\/p>\n","protected":false},"excerpt":{"rendered":"

Blockchain technology is a distributed digital ledger that records transactions across multiple computers in a way that makes the records tamper-resistant. Each transaction is grouped into a block, and blocks are chained together in chronological order, creating a permanent, transparent, and decentralised record. What Is Blockchain? A blockchain is essentially a shared database maintained by […]<\/p>\n","protected":false},"author":3,"featured_media":0,"menu_order":0,"template":"","meta":{"_uag_custom_page_level_css":"","footnotes":""},"class_list":["post-14315","glossary","type-glossary","status-publish","hentry"],"blocksy_meta":[],"uagb_featured_image_src":{"full":false,"thumbnail":false,"medium":false,"medium_large":false,"large":false,"1536x1536":false,"2048x2048":false,"web-stories-poster-portrait":false,"web-stories-publisher-logo":false,"web-stories-thumbnail":false},"uagb_author_info":{"display_name":"Team Lemonn","author_link":"https:\/\/lemonn.co.in\/blog\/author\/ashu\/"},"uagb_comment_info":0,"uagb_excerpt":"Blockchain technology is a distributed digital ledger that records transactions across multiple computers in a way that makes the records tamper-resistant. Each transaction is grouped into a block, and blocks are chained together in chronological order, creating a permanent, transparent, and decentralised record. What Is Blockchain? A blockchain is essentially a shared database maintained by…","_links":{"self":[{"href":"https:\/\/lemonn.co.in\/blog\/wp-json\/wp\/v2\/glossary\/14315","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/lemonn.co.in\/blog\/wp-json\/wp\/v2\/glossary"}],"about":[{"href":"https:\/\/lemonn.co.in\/blog\/wp-json\/wp\/v2\/types\/glossary"}],"author":[{"embeddable":true,"href":"https:\/\/lemonn.co.in\/blog\/wp-json\/wp\/v2\/users\/3"}],"version-history":[{"count":0,"href":"https:\/\/lemonn.co.in\/blog\/wp-json\/wp\/v2\/glossary\/14315\/revisions"}],"wp:attachment":[{"href":"https:\/\/lemonn.co.in\/blog\/wp-json\/wp\/v2\/media?parent=14315"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}