According to @ItsDave_ADA, ADA enforces a fixed maximum supply of 45 billion tokens, positioning it within a digital scarcity framework that matters for valuation and dilution risk. Cardano documentation by IOG confirms a hard cap of 45,000,000,000 ADA and a declining monetary expansion schedule until the cap is reached, limiting long-term issuance-driven inflation for holders, per Cardano documentation. Satoshi Nakamoto’s Bitcoin Whitepaper states Bitcoin’s supply is capped at 21 million to resist inflation through predictable issuance, reinforcing the concept of scarcity as a design goal, per the Bitcoin Whitepaper. Ripple’s official materials note XRP’s total supply is fixed at 100 billion created at inception with no additional issuance, meaning the cap is strict even as monthly escrows affect circulating supply, per Ripple documentation. The author adds that among the top 10 by market cap, only ADA, BTC, and XRP enforce strict max caps, according to @ItsDave_ADA. However, Binance states BNB was issued with a 200 million maximum supply and features an ongoing burn program targeting 100 million BNB, indicating BNB also enforces a cap, per Binance documentation. For trading, assets with explicit hard caps remove monetary inflation from new issuance, which simplifies supply-side assumptions versus elastic-issuance assets, as described in the Bitcoin Whitepaper and Cardano monetary policy documentation.

According to @ItsDave_ADA, only Bitcoin (BTC), Cardano (ADA), and XRP in the top 10 have a hard supply cap and thus fixed digital scarcity, while Solana (SOL) is inflationary, implying capped assets can compound value as demand rises. Source: https://twitter.com/ItsDave_ADA/status/1966946060598935669 Bitcoin’s supply is hard-capped at 21 million with programmed halvings that cut new issuance roughly every four years, limiting structural dilution. Source: https://bitcoin.org/en/faq Cardano’s ADA has a fixed maximum supply of 45 billion, with staking rewards emitted from reserves until the cap is reached, reinforcing a capped-supply profile. Source: https://iohk.io/en/blog/posts/2020/08/13/the-monetary-policy-of-cardano/ XRP’s total supply was created at genesis at 100 billion and cannot be increased, with small reductions from transaction-fee burns, confirming a non-inflationary supply. Source: https://xrpl.org/xrp.html Solana employs an inflation schedule that started near 8% annually and decays by 15% per year toward a long-term 1.5% rate, indicating no hard cap. Source: https://docs.solana.com/cluster/inflation However, BNB also enforces a maximum supply of 200 million with ongoing auto-burns targeting a 100 million terminal supply, so capped-supply designs extend beyond BTC, ADA, and XRP. Source: https://www.binance.com/en/bnb Trading takeaway: capped-supply assets reduce dilution from new issuance, but circulating float still changes via mechanisms like ADA reserve emissions and XRP escrow releases, which can affect short-term supply overhang and price elasticity. Source: https://iohk.io/en/blog/posts/2020/08/13/the-monetary-policy-of-cardano/ and https://ripple.com/insights/quarterly-xrp-markets-reports/