International Business Machines Corporation

Pralhad Dinesh Deshpande

Muhammad Tayyab Asif

Yuan Yuan

Raghav Sood

Venkatraman Ramakrishna

Palanivel Andiappan Kodeswaran

Vishal Singh Batra

Chun Hui Suen

Sudip Dutta

Proshanta Sarkar

Santanu Mitra

Vijay Ekambaram

Ravindranath Kokku

Praveen Jayachandran

Amit Anil Nanavati

Ashish Kumar Mathur

Nilanjan Banerjee

Sayandeep Sen

Shalini Kapoor

Amit Mohan Mangalvedkar

Yu Chin Fabian Lim

Rajan Kumar

Alan Kang Hong Lim

Zhou Yinsheng

An example operation may include one or more of receiving, by a blockchain node of a permissioned blockchain network, a request to transfer an asset from an asset provider to an asset requester, determining the request is valid, and in response validating one or more of an asset requester and an asset provider associated with the request, determining a risk exposure associated with the request is acceptable and generating a blockchain transaction to a public blockchain network to transfer the asset.

Database configuration for asset transfers

An example operation may include one or more of identifying a transaction from a blockchain node to be committed to a blockchain, determining a current amount of block space reserved by other blockchain nodes of the blockchain from a schedule, determining whether there is enough block space available for the transaction, and creating a block space reservation for the transaction.

Transaction scheduling for block space on a blockchain

An example operation may include one or more of identifying a blockchain transaction requiring commitment processing for commitment to a blockchain, determining the blockchain transaction is delayed, responsive to identifying the blockchain transaction is delayed, creating a transaction acceleration smart contract defining an incentive for performing the commitment processing of the blockchain transaction, and storing the transaction acceleration smart contract blockchain in a different blockchain.

Decentralized out-of-band accelerated blockchain transaction processing

An example operation may include one or more of receiving blockchain transactions, sorting an order of the blockchain transactions, simulating committance processing of the plurality of blockchain transactions to identify mining costs associated with each of the plurality of blockchain transactions, and applying one or more heuristic procedures to select one or more of the plurality of blockchain transactions which maximize a result associated with a next blockchain block.

Block creation based on transaction cost and size

An example operation may include one or more of initializing a smart contract (SC) and appending it to a blockchain, registering each of a plurality of participants as a party to the SC, receiving from at least some of the participants an encrypted confidential input commitment, appending the encrypted input commitments to the blockchain, decrypting the encrypted input commitments, executing by the SC at least one business rule using the decrypted input commitments to obtain a business rule result, and identifying a prevailing participant based at least in part on the business rule result.

Ensuring information fairness and input privacy using a blockchain in a competitive scenario governed by a smart contract

An example operation may include one or more processing transactions of a plurality of blocks of a blockchain of the blockchain network to determine a user of a plurality of users that is a party of the respective transaction and a mining pool of one or more mining pools that included the respective transaction in the blockchain, performing a statistical analysis of the transactions to determine if the transactions of a user of the plurality of users is distributed across the one or more mining pools in a statistically expected manner, determining that the user has a special relationship with one or more of the one or more mining pools if the transactions of the user are not distributed across the mining pools in a statistically expected manner, and for a user that is determined to have a special relationship, determining one or more of the mining pools with which the determined user has a special relationship.

Special relationships in a blockchain

An example operation may include one or more of receiving transaction parameters for a blockchain transaction into a transaction wallet interface of a transaction wallet of a sender, the transaction parameters comprising a transaction amount and an intended recipient address. The example operation may include generating a blockchain transaction that specifies the transaction amount and a single recipient address selected from the intended recipient address and a mining pool address of a mining pool, and providing the generated blockchain transaction to the mining pool.

Privacy preserving transactions with probabilistic transaction fees

An example method of operation may include one or more of identifying a number of share chains from a smart contract stored in a blockchain, identifying a contributed block received from a miner entity associated with one of the share chains, determining whether the contributed block is valid for the one share chain, and updating the one share chain based on the contributed block.

Decentralized pooled mining for enabling proof-of-work on blockchains

An example operation may include one or more of signing a blockchain transaction by an endorsement peer member of a blockchain, transmitting the blockchain transaction to an ordering service, identifying a blockchain transaction queue length, and receiving a signed promise from the ordering service that the blockchain transaction will be included in an identified block number based on the blockchain transaction queue length.

Identifying faults in a blockchain ordering service

A blockchain configuration may be used to store smart contracts. One example method of operation may include one or more of identifying a metric configuration associated with a smart contract stored in a blockchain, logging an event which is part of the metric configuration, determining whether the event supports requirements of the smart contract, determining whether a smart contract policy in the smart contract matches a system policy, and updating the smart contract on the blockchain when the requirements of the smart contract are supported by the event and the smart contract policy matches the system policy.

Smart contract admission check and fault tolerance in a blockchain

An example system may include a processor and memory, wherein the processor is configured to perform one or more of gather hashed commitments inputs from a plurality of user peers until a current time of a blockchain network equals to a hashed commitments inputs end time (t), collect plain text inputs until the current time of the blockchain network equals to a plain text inputs collection end time (t), wherein the tis greater than the t, and execute a chaincode of the smart contract to: compare generated hashes of the plain text inputs against previously stored hashes, in response to a match, store the plain text inputs into an input array, and perform a compute function on the input array.

Preservation of privacy of inputs

An example operation may include one or more of initiating a timer to begin timing an audit procedure, when the timer expires after a predefined period of time, randomly selecting a committer node member of a blockchain, transmitting a request for a hash of a blockchain block, comparing the hash of the blockchain block, received from the randomly selected committer node, to a known value of the hash of the blockchain block, and determining whether the hash of the blockchain block received matches the known value of the hash of the blockchain block.

An example operation may include one or more of identifying a smart contract, processing the smart contract to create a smart contract definition, determining whether the smart contract has been accepted by identified parties, when the smart contract has been accepted by the identified parties, generating a smart contract definition hash, and forwarding the smart contract definition hash to one or more blockchains.

Smart contract creation and monitoring for event identification in a blockchain

An example operation may include one or more of identifying a transaction from a blockchain node to be committed to a blockchain, determining available channels for assignment, assigning a channel to the blockchain node, and transmitting the transaction to the blockchain on the assigned channel.

Transaction reservation for block space on a blockchain

An example operation may include one or more of receiving cryptocurrency information of a cryptocurrency mined via a blockchain, determining a volatility of the cryptocurrency based on the received cryptocurrency information, in response to the determined volatility being greater than a predetermined threshold, stopping inclusion of transaction data within data blocks for storage on the blockchain, and generating one or more transaction-free data blocks, and storing the one or more transaction-free data blocks within a hash-linked chain of transaction data blocks previously stored on the blockchain.

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Singapore, Singapore

Pralhad Dinesh Deshpande