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公开(公告)号：US20200235947A1
公开(公告)日：2020-07-23
申请号：US16486458
申请日：2017-02-17
Applicant: Nokia Technologies Oy
Inventor： Khan Baykaner , Alberto Ramos
Abstract: A technique, comprising: identifying, at a node forming part of a group of nodes operating a distributed ledger comprising a block chain, a decision to retrospectively change a first smart contract prescribing one or more changes in the ledger already recorded in one or more existing blocks of the blockchain; and, without changing any existing blocks of the blockchain, updating the ledger by adding to the current end of the blockchain a new block indicating a new state of the ledger determined by a re-execution of all operations, according to the first smart contract and one or more other smart contracts, recorded in one or more blocks of the blockchain after a block recording an operation of the first smart contract, while taking into account the change to the first smart contract.
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公开(公告)号：US11611445B2
公开(公告)日：2023-03-21
申请号：US16486458
申请日：2017-02-17
Applicant: Nokia Technologies Oy
Inventor： Khan Baykaner , Alberto Ramos
Abstract: A technique, comprising: identifying, at a node forming part of a group of nodes operating a distributed ledger comprising a block chain, a decision to retrospectively change a first smart contract prescribing one or more changes in the ledger already recorded in one or more existing blocks of the blockchain; and, without changing any existing blocks of the blockchain, updating the ledger by adding to the current end of the blockchain a new block indicating a new state of the ledger determined by a re-execution of all operations, according to the first smart contract and one or more other smart contracts, recorded in one or more blocks of the blockchain after a block recording an operation of the first smart contract, while taking into account the change to the first smart contract.
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