US 12,737,756 B2Granted

Secure provision of undetermined data from an undetermined source into the locking script of a blockchain transaction

AssigneenChain Licensing AG

InventorsYing Chan, Dean Kramer

Life of this patent

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Abstract

The invention relates to distributed ledger technologies such as consensus-based blockchains. Computer-implemented methods for a self-replicating smart contract with termination condition are described. The invention is implemented using a blockchain network. A first transaction including a first script is validated by a node in the blockchain network including a third script, and a second set of field values of a second transaction, wherein the second set of field values includes a copy of the second script causing to obtain the second transaction. The second transaction includes a second script, validated by a node upon determining that a termination condition is unfulfilled, at least obtaining the third script from the first set of field values, and determining that the copy of the second script matches the third script. The first transaction is validated as a result of execution of the first script and the second script.

Claims7

Dependent claims

A computer-implemented method for execution of a parametrized smart contract, the method comprising:

receiving, at a validation node in a blockchain network, an unlocking blockchain transaction to be validated, the unlocking blockchain transaction including a first unlocking script;
executing the first unlocking script to obtain data and a first set of field values of the unlocking blockchain transaction, the first set of field values including a second locking script of the unlocking blockchain transaction;
obtaining a previous blockchain transaction associated with the parameterized smart contract, the previous blockchain transaction including a first locking script;
executing the first locking script to cause the validation node to:
obtain a second set of field values of the previous blockchain transaction, the second set of field values including a copy of the first locking script;
determine that a termination condition is unfulfilled;
determine that the copy of the first locking script matches the second locking script of the unlocking blockchain transaction;
and
validating the unlocking blockchain transaction based on said determination;
and
propagating the validated unlocking blockchain transaction to one or more nodes of a blockchain network.

8 more elements

Dependencies are inferred from the claim text.

Facts

Application: 18/243,607Filed 7 Sep 2023 · continuation
Priority: GB 170818522 May 2017
Published: US 2023/0419317 A128 Dec 2023
Granted: 15 Sep 2026
Term ends: Not estimatedThe source records don’t support an estimate.

Classification26 codes

G06F 21/64
Protecting data: protecting data integrity, e.g. using checksums, certificates or signatures
G06Q 20/389
Payment protocols; Details thereof: keeping log of transactions for guaranteeing non-repudiation of a transaction
G06F 16/2379
Updating: updates performed during online database operations; commit processing
G06F 21/6209
Protecting access to data via a platform, e.g. using keys or access control rules: to a single file or object, e.g. in a secure envelope,…

Family

Application16/616,278Parent of this continuation · filed 14 May 2018
PCT/IB2018/053338Parent of this continuation · filed 14 May 2018
US 2023/0419317 A1Pre-grant publication · published 28 Dec 2023
US 11,810,018 B2Parent of this continuation
US 2020/0143339 A1Published application
US 12,737,756 B2This patent

From the US filing history. Foreign family members aren’t listed.