Granted Patent B2

US 12,373,829 · App. 18/399,582 · Granted Jul 29, 2025

Inventors: Ying Chan (Cambridge, GB); Dean Kramer (London, GB)

Assignee: NCHAIN LICENSING AG

G06Q20/389G06F16/2379G06F21/6209G06F21/645G06Q20/065G06Q20/0658G06Q20/36G06Q20/3674G06Q20/3825G06Q20/3829H04L9/0637H04L9/0643H04L9/30H04L9/3236H04L9/3239H04L9/3247G06Q10/10G06Q2220/00H04L9/3066H04L9/3252H04L9/50H04L2209/56

Abstract

Claims (29)

1. A method comprising:

receiving, at a node in a blockchain network, a first transaction to validate, the first transaction including a first script that at least:

includes a set of field values of the first transaction; and

causes, as a result of being executed, causes the node to obtain the set of field values;

obtaining a second transaction, the second transaction having been validated and including a second script that, as a result of being executed, causes the node to at least generate a signature based at least in part on a private cryptographic key and a mask number; and

validating the first transaction by executing the first script and the second script.

2. The method according to claim 1 ,

wherein validating the first transaction is successfully performed without verifying that an entity that created the first transaction has access to secret information.

3. The method according to claim 1 , wherein:

the private cryptographic key is of an asymmetric key pair; and

validating the first transaction further includes validating that the signature is associated with a public cryptographic key of the asymmetric key pair.

4. The method according to claim 1 , wherein:

the first script further specifies a signature hash type; and

the set of field values is based at least in part on the signature hash type.

5. The method according to claim 4 , wherein the signature hash type is a value that indicates which field values of the set of field values of the first transaction are to be included in the signature.

6. The method according to claim 1 , wherein:

the second script is a locking script that imposes a set of conditions for validating the first transaction; and

execution of the locking script causes the node to validate the first transaction by determining whether the set of conditions have been fulfilled.

7. The method according to claim 1 , wherein the first script is an unlocking script for satisfying the set of conditions of the second script.

8. The method according to claim 1 , wherein validating the first transaction causes the transfer of an unspent transaction output of the second transaction.

9. The method according to claim 1 , wherein the node is a computing device that is communicatively coupled to at least one other node in the blockchain network.

10. The method according to claim 1 , wherein the blockchain network is comprised of distributed electronic devices running an instance of a blockchain protocol.

11. The method according to claim 1 , wherein the first script and second script are written using a Turing incomplete instruction set.

12. The method according to claim 1 , wherein the first script and second script are written using a Turing complete instruction set.

13. The method according to claim 1 , wherein the first script, by including the set of fields, causes the node, as a result of execution of the first script, to make the set of fields available as input to the second script.

14. A system, comprising:

a processor; and

memory including executable instructions that, as a result of execution by the processor, causes the system to perform the method of claim 1 .

15. A non-transitory computer-readable storage medium having stored thereon executable instructions that, as a result of being executed by a processor of a computer system, cause the computer system to at least perform the method of claim 1 .

Assignments (7)

Priority Claims (6)

Continuity (3)

References Cited (145)