According to @ItsDave_ADA, BTC and ADA exemplify hard supply limits and predictable rules, while fiat and SOL embody flexible, ongoing issuance that can expand over time (source: @ItsDave_ADA). Bitcoin enforces a fixed 21 million cap with a predefined halving schedule that reduces issuance predictably (source: Satoshi Nakamoto, Bitcoin: A Peer-to-Peer Electronic Cash System). Cardano specifies a maximum supply of 45 billion ADA under its protocol-level monetary policy (source: Input Output Global, Cardano Documentation — Monetary Policy). Solana uses a decreasing inflation schedule without a fixed maximum supply, resulting in continued token issuance over time (source: Solana Labs, Solana Documentation — Inflation and Supply). Fiat money supply is managed under elastic central bank policy that can expand or contract liquidity (source: Board of Governors of the Federal Reserve System, Monetary Policy). For traders, protocol-level issuance directly shapes circulating supply trajectories; hard caps constrain new supply, while inflation schedules add ongoing emissions that must be monitored in supply-demand analysis (source: Satoshi Nakamoto, Bitcoin whitepaper; Input Output Global, Cardano Documentation; Solana Labs, Solana Documentation).