POPCORN Witness Verifier for Claude Code

io.github.violetclaire/popcorn-tain-verifier

MCP server for verifying receipts: POPCORN-WITNESS/2.0 signature, digest, and time. Free, read only.

client:Claude Code transport:streamable-http tools:1

Install POPCORN Witness Verifier in Claude Code

run in your project directory

claude mcp add --transport http popcorn-tain-verifier https://popcorn-tain-verify-mcp-v2.violetherod.workers.dev/mcp

Adds it for this project only. Append --scope user to make it available everywhere. Claude Code docs