| dc.contributor.advisor | 郭桐惟 | zh_TW |
| dc.contributor.advisor | Kuo, Tung-Wei | en_US |
| dc.contributor.author (Authors) | 朱奕寧 | zh_TW |
| dc.contributor.author (Authors) | Chu, Yi-Ning | en_US |
| dc.creator (作者) | 朱奕寧 | zh_TW |
| dc.creator (作者) | Chu, Yi-Ning | en_US |
| dc.date (日期) | 2020 | en_US |
| dc.date.accessioned | 4-Jan-2021 11:10:45 (UTC+8) | - |
| dc.date.available | 4-Jan-2021 11:10:45 (UTC+8) | - |
| dc.date.issued (上傳時間) | 4-Jan-2021 11:10:45 (UTC+8) | - |
| dc.identifier (Other Identifiers) | G0107753042 | en_US |
| dc.identifier.uri (URI) | http://nccur.lib.nccu.edu.tw/handle/140.119/133430 | - |
| dc.description (描述) | 碩士 | zh_TW |
| dc.description (描述) | 國立政治大學 | zh_TW |
| dc.description (描述) | 資訊科學系 | zh_TW |
| dc.description (描述) | 107753042 | zh_TW |
| dc.description.abstract (摘要) | 在這個數位崛起的時代，區塊鏈是這個時代所造就的新興科技。隨著區塊鏈的發展日漸成熟，該技術也逐漸在金融、物流、穩定幣等各個層面衍生出多樣化的應用與服務。它透過密碼學與分散式系統技術，使區塊鏈中的所有節點彼此交換訊息並共同維護鏈上資料（如交易帳本）。隨著時間的推進，區塊鏈中的資料與交易量不斷成長，因此，如何於龐大的區塊鏈中取得數位貨幣交易紀錄，已成為實務應用上必須面對的問題。為此，本論文設計一去中心化數位貨幣記錄與查詢服務。此服務實作於私有鏈之智能合約中，利用跨鏈技術（見證人模式與中繼者模式）存取於公有鏈上之交易資料，並於智能合約中使用Binary Search演算法，提升「區塊範圍查詢」、「時間範圍查詢」功能之效率。最後，本論文將透過Geth建構此去中心化數位貨幣記錄與查詢服務，並架設一網頁介面以呈現服務內容。 | zh_TW |
| dc.description.abstract (摘要) | Blockchain is a novel technology, and it has diverse applications and services in various fields such as finance, logistics, and stable coins. Blockchain uses cryptography and decentralized system technology to enable all nodes in the blockchain to exchange messages with each other and jointly maintain chain data such as transaction ledgers. As time progresses, blockchain stores a massive amount of data. Thus, searching data has become an important problem. Therefore, we design a decentralized digital currency tracing service, which is implemented in private blockchain smart contracts. For private blockchain smart contracts to access blockchain that stores the transaction data, we use cross-chain technology such as notary schemes and relays. In addition, we apply binary search to improve the efficiency of our searching functions, including block range query and time range query. Finally, we have implemented our system on Geth, and setup a website to demonstrate our service. | en_US |
| dc.description.tableofcontents | 摘 要 IABSTRACT II目 次 III圖 次 V第一章 緒論 1第二章 技術背景 42.1 區塊鏈 42.2 智能合約 62.3 跨鏈技術 72.4 ORACLIZE（PROVABLE）服務 7第三章 相關研究 103.1 BIGCHAINDB 103.2 ETHEREUM QUERY LANGUAGE 113.3 ETHERSCAN 123.4 EVENT LISTENER 13第四章 系統實作 144.1 實作系統架構 144.2 智能合約設計 154.2.1 智能合約架構 154.2.2 Oraclize（Provable）服務與Ethereum-Bridge介紹 174.2.2.1 Oraclize（Provable）服務 174.2.2.2 Ethereum-Bridge 194.2.3 資料處理方式 194.2.4 Query功能介紹 224.2.5 Query實驗結果 274.3 WEB後端設計 28第五章 系統操作介面與使用流程 295.1 新增數位貨幣之合約位址與相關資訊 305.2 修改數位貨幣之相關資訊 335.3 查找特定數位貨幣之交易紀錄 355.4 查找所有已新增之數位貨幣之交易紀錄 39第六章 討論與結論 406.1 討論 406.2 結論 41參考文獻 42 | zh_TW |
| dc.format.extent | 3906075 bytes | - |
| dc.format.mimetype | application/pdf | - |
| dc.source.uri (資料來源) | http://thesis.lib.nccu.edu.tw/record/#G0107753042 | en_US |
| dc.subject (關鍵詞) | 區塊鏈 | zh_TW |
| dc.subject (關鍵詞) | 智能合約 | zh_TW |
| dc.subject (關鍵詞) | 跨鏈技術 | zh_TW |
| dc.subject (關鍵詞) | Blockchain | en_US |
| dc.subject (關鍵詞) | Smart Contract | en_US |
| dc.subject (關鍵詞) | Cross-Chain Technology | en_US |
| dc.title (題名) | 去中心化數位貨幣交易記錄與查詢服務：設計與以太坊實作 | zh_TW |
| dc.title (題名) | A Decentralized Digital Currency Tracing Service: Design and Implementation on Ethereum | en_US |
| dc.type (資料類型) | thesis | en_US |
| dc.relation.reference (參考文獻) | [1]"Introductiion To Smart Contracts," [Online]. Available: https://ethereum.org/en/developers/docs/smart-contracts/.[2]"EIP-20: ERC-20 Token Standard," [Online]. Available: https://eips.ethereum.org/EIPS/eip-20.[3]"What Is DeFi?," [Online]. Available: https://www.coindesk.com/what-is-defi.[4]S. Nakamoto, "Bitcoin: A peer-to-peer electronic cash system. White paper," 31 October 2008. [Online]. Available: http://bitcoin.org/bitcoin.pdf.[5]V. Buterin, "A next-generation smart contract and decentralized application platform. White Paper," 2014. [Online]. Available: https://github.com/ethereum/wiki/wiki/White-Paper.[6]"Facebook Libra," [Online]. Available: https://libra.org/en-US/.[7]"R3 Corda," [Online]. Available: https://www.corda.net/.[8]"BigchainDB," [Online]. Available: https://www.bigchaindb.com/.[9]S. Bragagnolo, H. Rocha, M. Denker and S. Ducasse, "Ethereum Query Language," in 2018 IEEE/ACM 1st International Workshop on Emerging Trends in Software Engineering for Blockchain (WETSEB), Gothenburg, Sweden, 2018.[10]"Etherscan," [Online]. Available: https://etherscan.io/.[11]"Introduction to SQL," [Online]. Available: https://www.w3schools.com/sql/sql_intro.asp.[12]"Oraclize(Provable)," [Online]. Available: https://provable.xyz/.[13]"Quorum," [Online]. Available: https://consensys.net/quorum/.[14]"Hyperledger Fabric," [Online]. Available: https://www.hyperledger.org/.[15]"EOSIO," [Online]. Available: https://eos.io/.[16]"RSK," [Online]. Available: https://www.rsk.co/.[17]"Solidity," [Online]. Available: https://solidity.readthedocs.io/en/latest/.[18]"Go Ethereum," [Online]. Available: https://geth.ethereum.org/.[19]"Node.js," [Online]. Available: https://nodejs.org/en/.[20]"Etherscan - Logs APIs," [Online]. Available: https://etherscan.io/apis#logs.[21]"Ethereum-Bridge," [Online]. Available: https://github.com/provable-things/ethereum-bridge.[22]"jsmnSol," [Online]. Available: https://github.com/chrisdotn/jsmnSol.[23]E. Nyaletey, R. M. Parizi, Q. Zhang and K.-K. R. Choo, "BlockIPFS - Blockchain-Enabled Interplanetary File System for Forensic and Trusted Data Traceability," in 2019 IEEE International Conference on Blockchain (Blockchain), Atlanta, GA, USA, 2019. | zh_TW |
| dc.identifier.doi (DOI) | 10.6814/NCCU202001856 | en_US |
