Protected: Bitcoin Layers 101: Layer 1 Crypto vs. Layer 2 vs. Layer 3
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Cryptocurrency
A cryptocurrency is a digital or virtual currency that is secured by cryptography, which makes it nearly impossible to counterfeit or double-spend.
Protected: NFT 101 (Non-Fungible Tokens simplified)
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Robren Library: The official resources for Spiri, ChangeU & Heritage Groups 