A unique, deterministic identifier assigned to every tradeable asset across all exchanges and blockchains. Canonical IDs eliminate ambiguity when the same asset is listed under different tickers or contract addresses on different platforms.
PRISM API assigns every asset a canonical ID (e.g. STRK.ASST.CRPT.BTC.SPOT-S3L2T8XA) so you can reference Bitcoin unambiguously regardless of whether an exchange calls it BTC, XBT, or BITCOIN.