The Bletchley 10 is composed of 10 of the largest cryptoassets, weighted by marketcap. As such, it tends to track the 'large-caps'.
The Bletchley 20 is composed of 20 medium-capitalization cryptoassets.
The Bletchley 40 is composed of 40 small-capitalization cryptoassets.
OnChainFX focuses on metrics that allow investors to make better comparisons and better decisions. Some columns may not be familiar - see below for overviews and links to complete explanations.
Why is transaction volume "unknowable"?
Some coins, such as Monero, do not have transparent blockchains where anyone can view transaction amounts, sources, and destinations. For such assets, it is impossible to determine transaction volume.
Why is transaction volume at least this much?
ZCash and other coins that use ZKSnarks allow for transactions that can be "shielded", where the amounts transferred, sources, and destinations are completely obscured. Most transactions on ZCash are currently *not* shielded, but some are, so we know that the transaction volume is *at least* the unshielded amount, which is what's reported here.
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