Polkadot cuts DOT issuance by 53.6%, Cosmos IBC expands to 115+ networks in 2026.

Polkadot reduced its annual DOT token issuance by 53.6% in March 2026, introducing a hard supply cap of 2.1 billion DOT to create defined scarcity. Meanwhile, Cosmos' Inter-Blockchain Communication (IBC) protocol is live across over 115 networks, enabling direct cross-chain transactions without asset wrapping. Polkadot leads in developer activity but has lower DeFi value locked compared to competitors, while Cosmos offers independent chain sovereignty and leads in real-world cross-chain volume. Both platforms address blockchain interoperability but with different technical approaches and trade-offs.