From 59ea3bd25b1f113168333eccdc9ffc4acd98cfe6 Mon Sep 17 00:00:00 2001
From: Yigit Sever
Date: Mon, 19 Apr 2021 18:23:22 +0300
Subject: Initial commit

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+title = "Blocks"
+description = "Block Documentation"
+weight = 10
++++
+
+A block that was proposed to commit Transactions in `transaction_list` to the
+ledger with a nonce that made `hash` valid; 6 zeroes at the left hand side of the
+hash (24 bytes).
+
+We are _mining_ using [blake2s](https://www.blake2.net/) algorithm, which produces 256 bit hashes. Hash/second is roughly {{ exp(num="20x10", exponent="3") }} on my machine, a new block can be mined in around 4-6 minutes.
+
+# Requests
+
+## GET
+A HTTP `GET` request to [/block](/block) endpoint will return the latest mined block.
+
+## POST
+
+A HTTP `POST` request with Authorization using JWT will allow you to propose your own blocks.
+
+# Fields
+```
+transaction_list: [array of Fingerprints]
+nonce: unsigned 32-bit integer
+timestamp: ISO 8601 <date>T<time>
+hash: String
+```
+
+# Mining
+The _mining_ process for the hash involves;
+- Creating a temporary JSON object with `transaction_list`, `timestamp` and `nonce` values
+- Serializing it
+- Calculating blake2s hash of the serialized string
+
+If the resulting hash is valid, then you can create a `Block` JSON object with the found `nonce` and `hash`.
+
+# Hash
+
+```tha``` field in [jwt documentation](/jwt) in fact stands for "The Hash", in the case of a post request for a block, you need to use hash field of the block.
+
+
+[ISO 8601 Reference](https://en.wikipedia.org/wiki/ISO_8601#Combined_date_and_time_representations)
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