INTEGRATED INDEX BLOCKS AND SEARCHING IN BLOCKCHAIN SYSTEMS

1 . A method comprising:

receiving a set of transactions of a transaction block of a blockchain, wherein the set of transactions have been validated by one or more peer systems of the blockchain;

generating, by a processing device, an index to one or more fields of one or more transactions of the transaction block;

providing the generated index for validation by a peer system of the blockchain;

receiving verification from at least a threshold number of peer systems that the generated index has been validated by the peer system; and

storing, by the processing device, the generated index as an index block in the blockchain.

2 . The method of claim 1 , wherein the generated index is representative of a first subset of the set of transactions, wherein the method further comprises generating a second index representative of a second subset of the set of transactions.

3 . The method of claim 1 , further comprising adding the index block to the blockchain and storing a hash of the index block in the blockchain to preserve its immutability.

4 . The method of claim 1 , further comprising:

receiving a query based on a field that is present in one or more transactions stored in the blockchain;

searching for transactions in which the field has one or more specified values, by searching in the index block of the blockchain;

identifying a responsive transaction block associated with the index block that satisfies the query based on a field; and

searching the transactions within the responsive transaction block for transactions satisfying the query.

5 . The method of claim 4 , further comprising:

loading, from the blockchain, a plurality of indexes relevant to the query received; and

merging the plurality of indexes into a single index.

6 . The method of claim 5 , further comprising:

adding, to the single index, recent blocks or recent transactions to update the single index for including the recent blocks or recent transactions.

7 . The method of claim 5 , further comprising:

adding a block of transactions to the single index for including transactions of the block.

8 . The method of claim 4 , further comprising:

loading, based on a plurality of indexes stored on one or more peer systems, information of transactions recorded by the plurality of indexes into a monolithic index.

9 . The method of claim 1 , further comprising:

receiving, from a second peer system, a proposed index block of a second set of transactions of a second block of the blockchain;

determining that the proposed index block is a complete and consistent index of the second set of transactions;

providing an indication to the second peer system that the proposed index block has been validated; and

generating a hash of the proposed index block provided by the second peer system.

10 . A blockchain system comprising:

a memory; and

a processing device, operatively coupled to the memory, to:

receive a set of transactions of a transaction block of a blockchain, wherein the set of transactions have been validated by one or more peer systems of the blockchain;

generate an index to one or more fields of one or more transactions in the set of transactions of the transaction block;

provide the generated index for validation by a peer system of the blockchain;

receive verification from at least a threshold number of peer systems that the generated index has been validated by the peer system; and

store the generated index as an index block in the blockchain.

11 . The blockchain system of claim 10 , wherein the generated index is representative of a first subset of the set of transactions, wherein the processing device is further to generate a second index representative of a second subset of the set of transactions.

12 . The blockchain system of claim 10 , wherein the processing device is further to use a distributed consensus algorithm to add the index block to the blockchain and to store a hash of the index block in the blockchain to preserve its immutability.

13 . The blockchain system of claim 10 , wherein the processing device is further to:

receive a query based on a field that is present in one or more transactions stored in the blockchain, wherein the query specifies a value or values of the field;

search for transactions in which the field has the specified value or values, by searching in the index block of the blockchain;

identify a responsive transaction block associated with the index block that satisfies the query for the field; and

search the transactions within the responsive transaction block for transactions satisfying the query.

14 . The blockchain system of claim 13 , wherein the processing device is further to:

load, from the blockchain, a plurality of indexes relevant to the query received;

merge the plurality of indexes into a single index; and

add, to the single index, recent blocks or recent transactions to update the single index for including the recent blocks or recent transactions.

15 . The blockchain system of claim 14 , wherein the processing device is further to:

add a block of transactions to the single index for including transactions of the block.

16 . The blockchain system of claim 10 , wherein the processing device is further to:

receive, from a second peer system, a proposed index block of a second set of transactions of a second block of the blockchain;

determine that the proposed index block is a complete and consistent index of the second set of transactions; and

provide an indication to the second peer system that the proposed index block has been validated.

17 . A non-transitory computer-readable storage medium having instructions stored thereon that, when executed by a processing device, cause the processing device to:

receive a set of transactions of a transaction block of a blockchain, wherein the set of transactions have been validated by one or more peer systems of the blockchain;

generate an index to one or more fields of one or more transactions in the set of transactions of the transaction block;

provide the generated index for validation by a peer system of the blockchain;

receive verification from at least a threshold number of peer systems that the generated index has been validated by the peer system; and

store the generated index as an index block in the blockchain.

18 . The non-transitory computer-readable storage medium of claim 17 , wherein the processing device is further to:

receive a query based on a field that is present in one or more transactions stored in the blockchain, wherein the query specifies a value or values of the;

search for transactions in which the field has the specified value or values, by searching in the index block of the blockchain;

identify a responsive transaction block associated with the index block that satisfies the query for the field; and

search the transactions within the responsive transaction block for transactions satisfying the query.

19 . The non-transitory computer-readable storage medium of claim 18 , wherein the processing device is further to:

load, from the blockchain, a plurality of indexes relevant to the query received;

merge the plurality of indexes into a single index; and

add, to the single index, recent blocks or recent transactions to update the single index for including the recent blocks or recent transactions.

20 . The non-transitory computer-readable storage medium of claim 17 , wherein the processing device is further to:

receive, from a second peer system, a proposed index block of a second set of transactions of a second block of the blockchain;

determine that the proposed index block is a complete and consistent index of the second set of transactions; and

provide an indication to the second peer system that the proposed index block has been validated.