International Business Machines Corporation

Adarsh Saraf

Chander Govindarajan

Manish Sethi

Senthilnathan Natarajan

Shreya Chakraborty

Prabal Banerjee

An example operation may include one or more of receiving, by an orderer node, a merge channels transaction for a plurality of channels that includes a modification policy for the plurality of the channels, verifying, by the orderer node, the merge channels transaction based on the modification policy, executing, by the orderer node, the merge channels transaction to generate a merge block, and providing the merge block to participating nodes for a merger of the plurality of the channels into a new channel.

Splitting and merging of storages

An example operation may include one or more of retrieving, into a new node to be instantiated in a blockchain network, a state database checkpoint of a state database created at a block number of a blockchain of the blockchain network, retrieving, into the new node, blocks of the blockchain from the checkpoint block number to a current block number, constructing an initial state database from the received state database checkpoint, and executing, at the new node, the transactions of the retrieved blocks on the initial state database to generate a current state database.

Checkpointing for increasing efficiency of a blockchain

An example operation may include one or more of receiving, by an orderer, a split transaction that contains configuration transactions for new channels, generating, by the orderer, a split block that includes a split transaction payload and a block header, and sending, by the orderer, the split block to participant nodes to form new channels based on a content of the split block.

An example operation may include one or more of in one or more peer nodes of a plurality of peer nodes of a blockchain network that stores a blockchain and a state database, periodically generating a state database checkpoint, obtaining a consensus on the state database checkpoint from one or more of the one or more peer nodes, and storing the consensus state database checkpoint.

An example operation may include one or more of transmitting a request for web page content to a web server, receiving a hypertext markup language (HTML) boilerplate file of the web page with a content delivery network (CDN) address for CDN content of the web page, retrieving the CDN content from a blockchain based on the CDN address, and displaying, at a client device, the web page based on the HTML boilerplate file and the CDN content retrieved from the blockchain.

Content distributed over secure channels

An example operation may include one or more of retrieving, into a corrupted node in a blockchain network that is at least one corrupted or forked, a state database checkpoint of a state database created at a block number of a blockchain of the blockchain network, wherein the retrieved state database checkpoint comprises a last known non-corrupted or non-forked checkpoint state, retrieving, into the corrupted node, blocks of the blockchain from the checkpoint block number to a current block number, constructing an initial state database from the retrieved state database checkpoint, and executing, at the corrupted node, the transactions of the retrieved blocks on the initial state database to generate a current state database.

Growing community of inventors

Bengaluru, India

Adarsh Saraf