<p>In addition to "How to Time-Stamp a Digital Document", in 1992, Bayer, Haber and Stornetta incorporated Merkle trees to the design, which improved its efficiency by allowing several documents to be collected into one block in a book "Improving the Efficiency and Reliability of Digital Time-Stamping"</p>

CC BY-SA 3.0
2018-04-07T12:29:57.763Z
2018-04-07T12:29:57.763Z
Sizuji
<p>I am writing a thesis about blockchain and part of my writing is the history of blockchain, so far I found the first proposal was “How to Time-Stamp a Digital Document” in 1991 by Haber and Stornetta. Source: <a href="https://www.quora.com/What-is-the-history-of-blockchain-technology" rel="nofollow noreferrer">https://www.quora.com/What-is-the-history-of-blockchain-technology</a></p>

<p>The second proposal was by the unknown Satoshi Nakamoto, “Bitcoin: A Peer-to-Peer Electronic Cash System”.</p>

<p>So my question is there any other proposals before the Bitcoin implementation of blockchain?</p>

CC BY-SA 3.0
2018-04-06T13:29:54.533Z
I have an article [here](https://raghavsood.com/blog/2018/03/24/why-bitcoin) that covers some of the precursors. The Princeton Bitcoin Book also goes into some more details.
Raghav Sood
<blockchain>
What is/are the first proposal(s) of blockchain or alternatives?
H Aßdøµ
# What is/are the first proposal(s) of blockchain or alternatives?

(Asked by: username_0 on 2018-04-06)

I am writing a thesis about blockchain and part of my writing is the history of blockchain, so far I found the first proposal was “How to Time-Stamp a Digital Document” in 1991 by Haber and Stornetta. Source: <https://www.quora.com/What-is-the-history-of-blockchain-technology>

The second proposal was by the unknown Satoshi Nakamoto, “Bitcoin: A Peer-to-Peer Electronic Cash System”.

So my question is there any other proposals before the Bitcoin implementation of blockchain?

**Tags:** blockchain

> **Comments:**
> **username_1**: I have an article [here](https://raghavsood.com/blog/2018/03/24/why-bitcoin) that covers some of the precursors. The Princeton Bitcoin Book also goes into some more details.  

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## 1 answers

### Answer by username_2 on 2018-04-07. Score: 2

In addition to "How to Time-Stamp a Digital Document", in 1992, Bayer, Haber and Stornetta incorporated Merkle trees to the design, which improved its efficiency by allowing several documents to be collected into one block in a book "Improving the Efficiency and Reliability of Digital Time-Stamping"


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