Blockchain is a distributed, immutable ledger that simplifies transaction recording and asset management in corporate networks, allowing for the recording and trading of both tangible and intangible assets while reducing risk and costs. It ensures accuracy and transparency through features like distributed ledger technology, immutable records, and smart contracts, enabling better tracking of transactions. Various types of blockchain networks exist, including public, private, and consortium blockchains, fostering trust in the information shared among network participants.