{"name":"io.github.violetclaire/popcorn-tain-verifier","slug":"violetclaire-popcorn-tain-verifier","title":"POPCORN Witness Verifier","description":"MCP server for verifying receipts: POPCORN-WITNESS/2.0 signature, digest, and time. Free, read only.","url":"https://mcp.market/server/violetclaire-popcorn-tain-verifier","rating":null,"grade":"A","score":88,"certified":false,"status":"active","category":"other","tags":[],"presence":{"score":23,"stars":0,"forks":0,"downloads_week":null,"last_push_at":"2026-10-28T01:09:52.000Z","license":"NOASSERTION"},"uptime":{"percent":100,"checks":28,"ok":28,"last_checked_at":"2026-11-04T07:31:09.104Z","last_ok_at":"2026-11-04T07:31:09.104Z","latency_ms":191},"claimed":false,"transport":"remote","callable_via_gateway":true,"default_price_micros":0,"repository":"https://github.com/violetclaire/popcorn-temporal-anchor","website":"https://767-2676.com/agent-entry","version":"2.0.1","remotes":[{"type":"streamable-http","url":"https://popcorn-tain-verify-mcp-v2.violetherod.workers.dev/mcp"}],"packages":[],"tools":[{"name":"popcorn_verify_v2","description":"Verify a POPCORN-WITNESS/2.0 receipt against a caller-computed SHA-256 payload digest, nonce, and independently trusted issuer keys. Send only the digest, never private payload bytes. Caller-supplied keys do not establish issuer identity. This does not prove on-chain settlement, establish current time, or grant authority. Free and read-only.","write_action":false,"price_micros":0,"input_schema":{"type":"object","properties":{"response":{"type":"object","propertyNames":{"type":"string"},"additionalProperties":{}},"jwks":{"type":"object","propertyNames":{"type":"string"},"additionalProperties":{}},"expected_nonce":{"type":"string"},"expected_payload_digest":{"type":"string"},"expected_node_id":{"type":"string"},"max_clock_accuracy_radius_ms":{"type":"integer","minimum":0,"maximum":9007199254740991},"previous_receipt":{"type":"object","properties":{"response":{"type":"object","propertyNames":{"type":"string"},"additionalProperties":{}},"jwks":{"type":"object","propertyNames":{"type":"string"},"additionalProperties":{}},"verification":{"type":"object","properties":{"expected_nonce":{"type":"string"},"expected_payload_digest":{"type":"string"},"expected_node_id":{"type":"string"},"max_clock_accuracy_radius_ms":{"type":"integer","minimum":0,"maximum":9007199254740991},"previous_receipt":{"type":"object","properties":{"response":{"type":"object","propertyNames":{"type":"string"},"additionalProperties":{}},"jwks":{"type":"object","propertyNames":{"type":"string"},"additionalProperties":{}},"verification":{"type":"object","properties":{"expected_nonce":{"type":"string"},"expected_payload_digest":{"type":"string"},"expected_node_id":{"type":"string"},"max_clock_accuracy_radius_ms":{"type":"integer","minimum":0,"maximum":9007199254740991},"previous_receipt":{"type":"object","properties":{"response":{"type":"object","propertyNames":{"type":"string"},"additionalProperties":{}},"jwks":{"type":"object","propertyNames":{"type":"string"},"additionalProperties":{}},"verification":{"type":"object","properties":{"expected_nonce":{"type":"string"},"expected_payload_digest":{"type":"string"},"expected_node_id":{"type":"string"},"max_clock_accuracy_radius_ms":{"type":"integer","minimum":0,"maximum":9007199254740991},"previous_receipt":{"type":"object","properties":{"response":{"type":"object","propertyNames":{"type":"string"},"additionalProperties":{}},"jwks":{"type":"object","propertyNames":{"type":"string"},"additionalProperties":{}},"verification":{"type":"object","properties":{"expected_nonce":{"type":"string"},"expected_payload_digest":{"type":"string"},"expected_node_id":{"type":"string"},"max_clock_accuracy_radius_ms":{"type":"integer","minimum":0,"maximum":9007199254740991},"previous_receipt":{"type":"object","properties":{"response":{"type":"object","propertyNames":{"type":"string"},"additionalProperties":{}},"jwks":{"type":"object","propertyNames":{"type":"string"},"additionalProperties":{}},"verification":{"type":"object","properties":{"expected_nonce":{"type":"string"},"expected_payload_digest":{"type":"string"},"expected_node_id":{"type":"string"},"max_clock_accuracy_radius_ms":{"type":"integer","minimum":0,"maximum":9007199254740991},"previous_receipt":{"type":"object","properties":{"response":{"type":"object","propertyNames":{"type":"string"},"additionalProperties":{}},"jwks":{"type":"object","propertyNames":{"type":"string"},"additionalProperties":{}},"verification":{"type":"object","properties":{"expected_nonce":{"type":"string"},"expected_payload_digest":{"type":"string"},"expected_node_id":{"type":"string"},"max_clock_accuracy_radius_ms":{"type":"integer","minimum":0,"maximum":9007199254740991},"previous_receipt":{"type":"object","properties":{"response":{"type":"object","propertyNames":{"type":"string"},"additionalProperties":{}},"jwks":{"type":"object","propertyNames":{"type":"string"},"additionalProperties":{}},"verification":{"type":"object","properties":{"expected_nonce":{"type":"string"},"expected_payload_digest":{"type":"string"},"expected_node_id":{"type":"string"},"max_clock_accuracy_radius_ms":{"type":"integer","minimum":0,"maximum":9007199254740991},"previous_receipt":{"type":"object","properties":{"response":{"type":"object","propertyNames":{"type":"string"},"additionalProperties":{}},"jwks":{"type":"object","propertyNames":{"type":"string"},"additionalProperties":{}},"verification":{"type":"object","properties":{"expected_nonce":{"type":"string"},"expected_payload_digest":{"type":"string"},"expected_node_id":{"type":"string"},"max_clock_accuracy_radius_ms":{"type":"integer","minimum":0,"maximum":9007199254740991}},"required":["expected_nonce","expected_payload_digest"],"additionalProperties":false}},"required":["response","jwks","verification"],"additionalProperties":false}},"required":["expected_nonce","expected_payload_digest"],"additionalProperties":false}},"required":["response","jwks","verification"],"additionalProperties":false}},"required":["expected_nonce","expected_payload_digest"],"additionalProperties":false}},"required":["response","jwks","verification"],"additionalProperties":false}},"required":["expected_nonce","expected_payload_digest"],"additionalProperties":false}},"required":["response","jwks","verification"],"additionalProperties":false}},"required":["expected_nonce","expected_payload_digest"],"additionalProperties":false}},"required":["response","jwks","verification"],"additionalProperties":false}},"required":["expected_nonce","expected_payload_digest"],"additionalProperties":false}},"required":["response","jwks","verification"],"additionalProperties":false}},"required":["expected_nonce","expected_payload_digest"],"additionalProperties":false}},"required":["response","jwks","verification"],"additionalProperties":false}},"required":["expected_nonce","expected_payload_digest"],"additionalProperties":false}},"required":["response","jwks","verification"],"additionalProperties":false}},"required":["response","jwks","expected_nonce","expected_payload_digest"],"$schema":"https://json-schema.org/draft/2020-12/schema","additionalProperties":false}}],"scan":{"score":88,"grade":"A","scanned_at":"2026-10-28T05:57:47.339Z","report":{"scannerVersion":"0.1.10","scannedAt":"2026-10-28T05:57:47.290Z","components":{"code":{"score":-1,"max":25,"notes":["remote-only server, no package to scan"]},"reliability":{"score":20,"max":20,"notes":["remote reachable in 741ms"]},"poisoning":{"score":15,"max":15,"notes":["1 tool descriptions checked"]},"auth":{"score":10,"max":15,"notes":["open endpoint, read-only tools"]},"maintenance":{"score":15,"max":15,"notes":["last push 0 days ago"]},"identity":{"score":6,"max":10,"notes":["registry namespace matches repository owner"]}},"findings":[],"inputs":{"probes":[{"url":"https://popcorn-tain-verify-mcp-v2.violetherod.workers.dev/mcp","reachable":true,"authRequired":false,"latencyMs":741,"serverInfo":{"name":"popcorn-tain-verifier","version":"2.0.0"}}],"packages":[],"repo":{"found":true,"owner":"violetclaire","repo":"popcorn-temporal-anchor","archived":false,"pushedAt":"2026-10-28T01:09:52Z","stars":0,"forks":0,"openIssues":11,"ownerType":"User","ownerAvatarUrl":"https://avatars.githubusercontent.com/u/246000117?v=4","ownerCreatedAt":"2025-11-25T03:53:54Z","license":"NOASSERTION"},"icon":{"url":"https://avatars.githubusercontent.com/u/246000117?v=4&s=128","source":"github"},"presence":{"stars":0,"forks":0,"downloadsWeek":null,"license":"NOASSERTION","lastPushAt":"2026-10-28T01:09:52.000Z","score":23}}}},"grade_history":[],"reviews":[]}