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- W2803122389 abstract "Bitcoin provides freshness properties by forming a blockchain where each block is associated with its timestamp and the previous block. Due to these properties, the Bitcoin protocol is being used as a decentralized, trusted, and secure timestamping service. Although Bitcoin participants which create new blocks cannot modify their order, they can manipulate timestamps almost undetected. This undermines the Bitcoin protocol as a reliable timestamping service. In particular, a newcomer that synchronizes the entire blockchain has a little guarantee about timestamps of all blocks. In this paper, we present a simple yet powerful mechanism that increases the reliability of Bitcoin timestamps. Our protocol can provide evidence that a block was created within a certain time range. The protocol is efficient, backward compatible, and surprisingly, currently deployed SSL/TLS servers can act as reference time sources. The protocol has many applications and can be used for detecting various attacks against the Bitcoin protocol." @default.
- W2803122389 created "2018-06-01" @default.
- W2803122389 creator A5054220744 @default.
- W2803122389 date "2018-03-24" @default.
- W2803122389 modified "2023-09-25" @default.
- W2803122389 title "Short Paper) Towards More Reliable Bitcoin Timestamps" @default.
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