Redactable blockchain

A system, the system comprising:

• a memory;
• and
• a processor in communication with the memory, the processor being configured to perform operations comprising:
• storing a value and a hash of the value in a ledger associated with a blockchain network;
• constructing a block hash from the hash of the value;
• validating a transaction by identifying that the hash of the value matches the hash of the value from a previous transaction;
• and
• maintaining integrity of the block hash.

A computer program product, the computer program product comprising a computer readable storage medium having program instructions embodied therewith, the program instructions executable by a processor to cause the processors to perform a function, the function comprising:

• storing a value and a hash of the value in a ledger associated with a blockchain network;
• constructing a block hash from the hash of the value;
• validating a transaction by identifying that the hash of the value matches the hash of the value from a previous transaction;
• and
• maintaining integrity of the block hash.

A method for redacting information from a blockchain network, the method comprising:

• providing a redact transaction for the blockchain network;
• initializing the redact transaction, wherein the redact transaction is associated with a validated transaction;
• identifying a hash value indicated within the redact transaction and associated with the validated transaction;
• and
• redacting a value associated with the hash value.

A system for redacting information from a blockchain network, the system comprising:

• a memory;
• and
• a processor in communication with the memory, the processor being configured to perform operations comprising:
• providing a redact transaction for the blockchain network;
• initializing the redact transaction, wherein the redact transaction is associated with a validated transaction;
• identifying a hash value indicated within the redact transaction and associated with the validated transaction;
• and
• redacting a value associated with the hash value.