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The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 11556247 B1

PDFFull Text
Date of Patent:
Jan. 17, 2023

Filed:

Apr. 28, 2021

Secure and transparent pruning for blockchains

Applicant:

Nec Corporation, Tokyo, JP;

Inventors:

Ghassan Karame, Heidelberg, DE;

Alessandro Sforzin, Heidelberg, DE;

Assignee:

NEC CORPORATION, Tokyo, JP;

Attorney:

Leydig, Voit & Mayer, Ltd.

Primary Examiner:

Dinku W Gebresenbet

Int. Cl.
CPC ...
G06F 16/00 (2019.01); G06F 3/06 (2006.01); H04L 9/32 (2006.01); H04L 9/06 (2006.01); G06Q 20/38 (2012.01); G06F 16/182 (2019.01); H04L 9/00 (2022.01);
U.S. Cl.
CPC ...
G06F 3/0608 (2013.01); G06F 3/067 (2013.01); G06F 3/0641 (2013.01); G06F 3/0652 (2013.01); G06F 16/1824 (2019.01); G06Q 20/382 (2013.01); H04L 9/0643 (2013.01); H04L 9/3236 (2013.01); H04L 9/50 (2022.05);
Abstract

A method for enabling pruning of a blockchain of a blockchain network includes creating an active blocks commitments Merkle tree from hashes of active blocks and creating an active smart contracts commitments Merkle tree from hashes of active smart contracts. The Merkle trees are created after an amount of blocks created in the blockchain has reached a threshold set by a pruning threshold parameter stored in the blockchain network. Hashes of the roots of the Merkle trees are stored in a header of a new block as a new genesis block. The new genesis block is broadcast to the blockchain network. A set of the active blocks and active smart contracts used respectively to create the active blocks commitments Merkle tree and the active smart contracts commitments Merkle tree are committed to upon the blockchain network reaching consensus on the new genesis block.

Find Patent Forward Citations

Karame, Ghassan. (2023). Secure and transparent pruning for blockchains (U.S. Patent No. 11556247). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/11556247

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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