**1. Introduction**

This is a study about cryptocurrencies and Blockchain (blockchain) platforms related to nature, having direct or indirect purposes to help the conservation or recovery of forest areas. The major liasons between cryptos and nature assets come in the forms of carbon credits, tree planting and nature restoration projects. Blockchain has created a new and innovative framework that provides a safe, efficient and transparent chain of transactions. Citizens wordwide daily trade digital currencies utilizing a chain of transactions registered on the web, with no central server, or proprietors, only provided by the Blockchain. Along with cryptocurrencies, blockchain has enabled the creation of a vast array of solutions for businesses and society because it provides effective uses for (1) funding sources and exchange of currency, (2) smart

contracts, and (3) reporting key information for all parties involved directly and indirectly in any relationship.

Since the creation of Bitcoin [1] cryptocurrencies have been designed to be free from government and central monetary regulations1 . Most of cryptocurrencies following Bitcoin, have been launched with unclear or weak proposals, other than speculation, rapidly becoming unvalued assets, popularly referred as "shitcoins", showing a repetive short valuaton life presenting a common "launch-peak-devaluation" pattern. Such massive devaluations have confirmed the absence of most cryptocurrencies' roles as tradeable assets and exchange of currency.

A cryptocurrency is commonly referred as a digital currency or token. Generally, a digital currency is launched through an Initial Coin Offering (ICO) in the forms of tokens, attracting initial investor interests, mainly based on speculative targets, followed by exponential increase in quotations, just to slump to very low values thereafter causing investor to dump their coins to capitalize on short-term gains [2]. This typical "boom-collapse" standard is observable in some coins launched with nature conservation objectives and related purposes, thus raising questions about the effectiveness of their roles tied to their promised objectives of nature conservation. This study presents four parts, being:


The analysis of a sample of more than 30 coins/tokens and blockchains indicates that most of them have weak assurances of the real benefits they claim to provide to nature conservation. In some cases, the issue may fall to weak information about their indicators about their related nature objects. However, the general perception of this study is that information on the majority of tokens do not specify clear and measured results of their purposes. A specific consideration is made to tokens related to carbon credits, with a brief exposition of the size and complexities associated to climate change issues. Finally, the study addresses key points and ideas associated to coins and nature, aiming at providing a mutual gain for coin valuation and social benefits and nature conservation.
