Token-Bound Executable Skills — the artifact identity &

Summary We propose an ERC-721 extension that binds a token to an executable skill : a package of files, led by a primary Markdown document, that an off-chain runtime (including LLM agent runtimes) can fetch from anywhere, verify byte-for-byte against on-chain anchors, and execute. On-chain, each token carries a SkillBinding : mdHash (SHA-256 of the plaintext primary document — a commitment that survives encryption), packageHash (SHA-256 of a deterministically encoded, content-addressed object graph — the SkillRoot — covering every file execution depends on), and a contract-incremented version