{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2020:KOVGBFVJGVYZ4IOALH65N7WAT3","short_pith_number":"pith:KOVGBFVJ","canonical_record":{"source":{"id":"2007.09280","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.med-ph","submitted_at":"2020-07-17T23:41:38Z","cross_cats_sorted":["physics.plasm-ph"],"title_canon_sha256":"99f769b30e3f8383251a1374173ba325606aef054405ac5642ac8042d565b598","abstract_canon_sha256":"37edf0f773c98c0db74db07c1b07e1432c72530db3ca7ff0c819ada910568ed0"},"schema_version":"1.0"},"canonical_sha256":"53aa6096a935719e21c059fdd6fec09ecc9302eb4b1c5bf640c8778103cb9b6a","source":{"kind":"arxiv","id":"2007.09280","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2007.09280","created_at":"2026-07-05T01:20:22Z"},{"alias_kind":"arxiv_version","alias_value":"2007.09280v1","created_at":"2026-07-05T01:20:22Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2007.09280","created_at":"2026-07-05T01:20:22Z"},{"alias_kind":"pith_short_12","alias_value":"KOVGBFVJGVYZ","created_at":"2026-07-05T01:20:22Z"},{"alias_kind":"pith_short_16","alias_value":"KOVGBFVJGVYZ4IOA","created_at":"2026-07-05T01:20:22Z"},{"alias_kind":"pith_short_8","alias_value":"KOVGBFVJ","created_at":"2026-07-05T01:20:22Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2020:KOVGBFVJGVYZ4IOALH65N7WAT3","target":"record","payload":{"canonical_record":{"source":{"id":"2007.09280","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.med-ph","submitted_at":"2020-07-17T23:41:38Z","cross_cats_sorted":["physics.plasm-ph"],"title_canon_sha256":"99f769b30e3f8383251a1374173ba325606aef054405ac5642ac8042d565b598","abstract_canon_sha256":"37edf0f773c98c0db74db07c1b07e1432c72530db3ca7ff0c819ada910568ed0"},"schema_version":"1.0"},"canonical_sha256":"53aa6096a935719e21c059fdd6fec09ecc9302eb4b1c5bf640c8778103cb9b6a","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T01:20:22.584273Z","signature_b64":"WVXxY6a/RGtOyiiIcFRU4mUn0KFkMQHwFVHczvOgXVmwg7O8TkRVypfXckwP0RJuVmY7NNJZlN3ogcjM/DAHAQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"53aa6096a935719e21c059fdd6fec09ecc9302eb4b1c5bf640c8778103cb9b6a","last_reissued_at":"2026-07-05T01:20:22.583853Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T01:20:22.583853Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2007.09280","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T01:20:22Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Cf11YNZ0sR1NmNYud3Jm8Akrw+jPm3idR+Im4aOP0XstblYupyLWMViuA+Z2PJW8IgVlFmWxw67StD4+zs8BCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-07T01:23:29.835606Z"},"content_sha256":"baf7b82881c4be8eecb7c8b5f69a4b8fac9749125c2a6285c5fa8194d79c8b05","schema_version":"1.0","event_id":"sha256:baf7b82881c4be8eecb7c8b5f69a4b8fac9749125c2a6285c5fa8194d79c8b05"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2020:KOVGBFVJGVYZ4IOALH65N7WAT3","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Efficient Facemask Sterilization via Forced Ozone Convection","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["physics.plasm-ph"],"primary_cat":"physics.med-ph","authors_text":"Carla Berrospe Rodriguez, Giorgio Nava, Joseph Schwan, Joshua Morgan, Justin W. Chartron, Lorenzo Mangolini, Troy R. Alva","submitted_at":"2020-07-17T23:41:38Z","abstract_excerpt":"During the beginning of 2020, the Covid-19 pandemic took the world by surprise, rapidly spreading undetected between and within many countries and wreaking havoc on the global economy both through death tolls and lockdowns. Healthcare professionals treating the coronavirus patients grapple with a massive and unprecedented shortage of Facepiece Respirators (FPRs) and other personal protective equipment (PPE), which act as fundamental tools to protect the health of the medical staff treating the patients affected by the coronavirus. While many FPRs are designed to be disposable single-use device"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2007.09280","kind":"arxiv","version":1},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2007.09280/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T01:20:22Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"njLzCAohbNMLrd4Ka0LquPsS+UhVTONEDlyzd0Wov7FVO4oQDbSeRCt/95odpWMZ10Xl6i4FHCmqSwmlmmuaDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-07T01:23:29.836103Z"},"content_sha256":"853f3a294f2c56ee5e38e3aefef09a272110047497e8cf38db3ea1e81ca80376","schema_version":"1.0","event_id":"sha256:853f3a294f2c56ee5e38e3aefef09a272110047497e8cf38db3ea1e81ca80376"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/KOVGBFVJGVYZ4IOALH65N7WAT3/bundle.json","state_url":"https://pith.science/pith/KOVGBFVJGVYZ4IOALH65N7WAT3/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/KOVGBFVJGVYZ4IOALH65N7WAT3/bundle.json","status":"primary"}],"public_keys":[{"key_id":"pith-v1-2026-05","algorithm":"ed25519","format":"raw","public_key_b64":"stVStoiQhXFxp4s2pdzPNoqVNBMojDU/fJ2db5S3CbM=","public_key_hex":"b2d552b68890857171a78b36a5dccf368a953413288c353f7c9d9d6f94b709b3","fingerprint_sha256_b32_first128bits":"RVFV5Z2OI2J3ZUO7ERDEBCYNKS","fingerprint_sha256_hex":"8d4b5ee74e4693bcd1df2446408b0d54","rotates_at":null,"url":"https://pith.science/pith-signing-key.json","notes":"Pith uses this Ed25519 key to sign canonical record SHA-256 digests. Verify with: ed25519_verify(public_key, message=canonical_sha256_bytes, signature=base64decode(signature_b64))."}],"merge_version":"pith-open-graph-merge-v1","built_at":"2026-08-07T01:23:29Z","links":{"resolver":"https://pith.science/pith/KOVGBFVJGVYZ4IOALH65N7WAT3","bundle":"https://pith.science/pith/KOVGBFVJGVYZ4IOALH65N7WAT3/bundle.json","state":"https://pith.science/pith/KOVGBFVJGVYZ4IOALH65N7WAT3/state.json","well_known_bundle":"https://pith.science/.well-known/pith/KOVGBFVJGVYZ4IOALH65N7WAT3/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2020:KOVGBFVJGVYZ4IOALH65N7WAT3","merge_version":"pith-open-graph-merge-v1","event_count":2,"valid_event_count":2,"invalid_event_count":0,"equivocation_count":0,"current":{"canonical_record":{"metadata":{"abstract_canon_sha256":"37edf0f773c98c0db74db07c1b07e1432c72530db3ca7ff0c819ada910568ed0","cross_cats_sorted":["physics.plasm-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.med-ph","submitted_at":"2020-07-17T23:41:38Z","title_canon_sha256":"99f769b30e3f8383251a1374173ba325606aef054405ac5642ac8042d565b598"},"schema_version":"1.0","source":{"id":"2007.09280","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2007.09280","created_at":"2026-07-05T01:20:22Z"},{"alias_kind":"arxiv_version","alias_value":"2007.09280v1","created_at":"2026-07-05T01:20:22Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2007.09280","created_at":"2026-07-05T01:20:22Z"},{"alias_kind":"pith_short_12","alias_value":"KOVGBFVJGVYZ","created_at":"2026-07-05T01:20:22Z"},{"alias_kind":"pith_short_16","alias_value":"KOVGBFVJGVYZ4IOA","created_at":"2026-07-05T01:20:22Z"},{"alias_kind":"pith_short_8","alias_value":"KOVGBFVJ","created_at":"2026-07-05T01:20:22Z"}],"graph_snapshots":[{"event_id":"sha256:853f3a294f2c56ee5e38e3aefef09a272110047497e8cf38db3ea1e81ca80376","target":"graph","created_at":"2026-07-05T01:20:22Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"graph_snapshot":{"author_claims":{"count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","strong_count":0},"builder_version":"pith-number-builder-2026-05-17-v1","claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/2007.09280/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"During the beginning of 2020, the Covid-19 pandemic took the world by surprise, rapidly spreading undetected between and within many countries and wreaking havoc on the global economy both through death tolls and lockdowns. Healthcare professionals treating the coronavirus patients grapple with a massive and unprecedented shortage of Facepiece Respirators (FPRs) and other personal protective equipment (PPE), which act as fundamental tools to protect the health of the medical staff treating the patients affected by the coronavirus. While many FPRs are designed to be disposable single-use device","authors_text":"Carla Berrospe Rodriguez, Giorgio Nava, Joseph Schwan, Joshua Morgan, Justin W. Chartron, Lorenzo Mangolini, Troy R. Alva","cross_cats":["physics.plasm-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.med-ph","submitted_at":"2020-07-17T23:41:38Z","title":"Efficient Facemask Sterilization via Forced Ozone Convection"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2007.09280","kind":"arxiv","version":1},"verdict":{"created_at":null,"id":null,"model_set":{},"one_line_summary":"","pipeline_version":null,"pith_extraction_headline":"","strongest_claim":"","weakest_assumption":""}},"verdict_id":null}}],"author_attestations":[],"timestamp_anchors":[],"storage_attestations":[],"citation_signatures":[],"replication_records":[],"corrections":[],"mirror_hints":[],"record_created":{"event_id":"sha256:baf7b82881c4be8eecb7c8b5f69a4b8fac9749125c2a6285c5fa8194d79c8b05","target":"record","created_at":"2026-07-05T01:20:22Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"attestation_state":"computed","canonical_record":{"metadata":{"abstract_canon_sha256":"37edf0f773c98c0db74db07c1b07e1432c72530db3ca7ff0c819ada910568ed0","cross_cats_sorted":["physics.plasm-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.med-ph","submitted_at":"2020-07-17T23:41:38Z","title_canon_sha256":"99f769b30e3f8383251a1374173ba325606aef054405ac5642ac8042d565b598"},"schema_version":"1.0","source":{"id":"2007.09280","kind":"arxiv","version":1}},"canonical_sha256":"53aa6096a935719e21c059fdd6fec09ecc9302eb4b1c5bf640c8778103cb9b6a","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"53aa6096a935719e21c059fdd6fec09ecc9302eb4b1c5bf640c8778103cb9b6a","first_computed_at":"2026-07-05T01:20:22.583853Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T01:20:22.583853Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"WVXxY6a/RGtOyiiIcFRU4mUn0KFkMQHwFVHczvOgXVmwg7O8TkRVypfXckwP0RJuVmY7NNJZlN3ogcjM/DAHAQ==","signature_status":"signed_v1","signed_at":"2026-07-05T01:20:22.584273Z","signed_message":"canonical_sha256_bytes"},"source_id":"2007.09280","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:baf7b82881c4be8eecb7c8b5f69a4b8fac9749125c2a6285c5fa8194d79c8b05","sha256:853f3a294f2c56ee5e38e3aefef09a272110047497e8cf38db3ea1e81ca80376"],"state_sha256":"4558f8b1a568a9706e572c993eef883ed35aa83bfe2ea978275364b973b6a85a"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ZJrW0Ri2svzbGjjALrZJQCzoMyRtJcZ9hMHpChwapXIhEEUaqOoWkTi+iisaWfRTac7SsvO23sLItSBkVTROCg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-07T01:23:29.839943Z","bundle_sha256":"2c98681857f682d43ecf1f1d95acba3765b6adc0cb184848ca2dec5f4dc0cb7b"}}