{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2022:AV3ZZHMO3ATC7TXJTFBGJQAR63","short_pith_number":"pith:AV3ZZHMO","canonical_record":{"source":{"id":"2203.09147","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2022-03-17T08:00:39Z","cross_cats_sorted":[],"title_canon_sha256":"38476a3ac24ce6d8b7bbf22e50e3519107e98f945ce38729d41a0714b7a9e7e4","abstract_canon_sha256":"7f6d51210828ad96de0d763016b9d28a83d46c1f73cfe0d0cd588b6fbed09910"},"schema_version":"1.0"},"canonical_sha256":"05779c9d8ed8262fcee9994264c011f6d542f7c381f6968a02d5e76b0c455e67","source":{"kind":"arxiv","id":"2203.09147","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2203.09147","created_at":"2026-07-05T04:21:11Z"},{"alias_kind":"arxiv_version","alias_value":"2203.09147v1","created_at":"2026-07-05T04:21:11Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2203.09147","created_at":"2026-07-05T04:21:11Z"},{"alias_kind":"pith_short_12","alias_value":"AV3ZZHMO3ATC","created_at":"2026-07-05T04:21:11Z"},{"alias_kind":"pith_short_16","alias_value":"AV3ZZHMO3ATC7TXJ","created_at":"2026-07-05T04:21:11Z"},{"alias_kind":"pith_short_8","alias_value":"AV3ZZHMO","created_at":"2026-07-05T04:21:11Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2022:AV3ZZHMO3ATC7TXJTFBGJQAR63","target":"record","payload":{"canonical_record":{"source":{"id":"2203.09147","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2022-03-17T08:00:39Z","cross_cats_sorted":[],"title_canon_sha256":"38476a3ac24ce6d8b7bbf22e50e3519107e98f945ce38729d41a0714b7a9e7e4","abstract_canon_sha256":"7f6d51210828ad96de0d763016b9d28a83d46c1f73cfe0d0cd588b6fbed09910"},"schema_version":"1.0"},"canonical_sha256":"05779c9d8ed8262fcee9994264c011f6d542f7c381f6968a02d5e76b0c455e67","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T04:21:11.475120Z","signature_b64":"t87qUy8Wlja+BbNK4o3Ei6NqnO8ka4h+yzhVd+eqT9Iz0+eKLPvoQpiBq4Qy8nFNGyMIWAkugXVxjCzI7+J2AA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"05779c9d8ed8262fcee9994264c011f6d542f7c381f6968a02d5e76b0c455e67","last_reissued_at":"2026-07-05T04:21:11.474696Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T04:21:11.474696Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2203.09147","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":"2026-07-05T04:21:11Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"mPPjKQNenxOndvsew6Mx5hjyAdIDenOXaMR8kTh+XD8tseVm2tXGiMAzayOqLg1SqbfUbUIGtU/83+ytgNZTAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-06T21:10:06.394687Z"},"content_sha256":"347e01de7470d41ad34e228fbd8fb46d6b435b35df39a0493fabe7829c2b5858","schema_version":"1.0","event_id":"sha256:347e01de7470d41ad34e228fbd8fb46d6b435b35df39a0493fabe7829c2b5858"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2022:AV3ZZHMO3ATC7TXJTFBGJQAR63","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The Qualification of GEM detector and its application to Imaging","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"physics.ins-det","authors_text":"(2) TTA Techtra Ltd, 3) ((1) Department of Physics & Astrophysics, (3) Department of Microsystems, 3) Piotr Bielowka (2, Asar Ahmed (1), Ashok Kumar (1), Delhi, Faculty of Electronics, India, Md. Naimuddin (1), Michal Babij (2, Microsystems, Photonics, Poland, Poland.), Technology, University of Delhi, Wroclaw, Wroclaw University of Science","submitted_at":"2022-03-17T08:00:39Z","abstract_excerpt":"The Gas Electron Multiplier (GEM) is a new age detector, which can handle the high flux of particles. The GEM foil, which is constructed using 50$\\mu$m highly insulating foil (Kapton/Apical) coated with 5$\\mu$m layers of copper, on both sides, with a network of specifically shaped holes is the major component of these detectors. The European Center for Nuclear Research (CERN) has been the sole supplier of the GEM foils until recently when a few other companies started manufacturing GEM foils under the transfer of technology (TOT) agrement from CERN. Techtra is one such company in Europe which "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2203.09147","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/2203.09147/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":"2026-07-05T04:21:11Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"hKu3jLMd3vrBtmhEN06m2e+V6SdtCezHIL26oIi59+VY2vBY+Cbl/bupfplZf2t0Yhbl3zbVdbgc4SMs+hgxDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-06T21:10:06.395215Z"},"content_sha256":"c5d024fe1d7d4888dd5eccaafe6bdc6d1f988845a55b8d85f7c5179b1f425bd2","schema_version":"1.0","event_id":"sha256:c5d024fe1d7d4888dd5eccaafe6bdc6d1f988845a55b8d85f7c5179b1f425bd2"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/AV3ZZHMO3ATC7TXJTFBGJQAR63/bundle.json","state_url":"https://pith.science/pith/AV3ZZHMO3ATC7TXJTFBGJQAR63/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/AV3ZZHMO3ATC7TXJTFBGJQAR63/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":"2026-08-06T21:10:06Z","links":{"resolver":"https://pith.science/pith/AV3ZZHMO3ATC7TXJTFBGJQAR63","bundle":"https://pith.science/pith/AV3ZZHMO3ATC7TXJTFBGJQAR63/bundle.json","state":"https://pith.science/pith/AV3ZZHMO3ATC7TXJTFBGJQAR63/state.json","well_known_bundle":"https://pith.science/.well-known/pith/AV3ZZHMO3ATC7TXJTFBGJQAR63/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2022:AV3ZZHMO3ATC7TXJTFBGJQAR63","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":"7f6d51210828ad96de0d763016b9d28a83d46c1f73cfe0d0cd588b6fbed09910","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2022-03-17T08:00:39Z","title_canon_sha256":"38476a3ac24ce6d8b7bbf22e50e3519107e98f945ce38729d41a0714b7a9e7e4"},"schema_version":"1.0","source":{"id":"2203.09147","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2203.09147","created_at":"2026-07-05T04:21:11Z"},{"alias_kind":"arxiv_version","alias_value":"2203.09147v1","created_at":"2026-07-05T04:21:11Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2203.09147","created_at":"2026-07-05T04:21:11Z"},{"alias_kind":"pith_short_12","alias_value":"AV3ZZHMO3ATC","created_at":"2026-07-05T04:21:11Z"},{"alias_kind":"pith_short_16","alias_value":"AV3ZZHMO3ATC7TXJ","created_at":"2026-07-05T04:21:11Z"},{"alias_kind":"pith_short_8","alias_value":"AV3ZZHMO","created_at":"2026-07-05T04:21:11Z"}],"graph_snapshots":[{"event_id":"sha256:c5d024fe1d7d4888dd5eccaafe6bdc6d1f988845a55b8d85f7c5179b1f425bd2","target":"graph","created_at":"2026-07-05T04:21:11Z","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/2203.09147/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"The Gas Electron Multiplier (GEM) is a new age detector, which can handle the high flux of particles. The GEM foil, which is constructed using 50$\\mu$m highly insulating foil (Kapton/Apical) coated with 5$\\mu$m layers of copper, on both sides, with a network of specifically shaped holes is the major component of these detectors. The European Center for Nuclear Research (CERN) has been the sole supplier of the GEM foils until recently when a few other companies started manufacturing GEM foils under the transfer of technology (TOT) agrement from CERN. Techtra is one such company in Europe which ","authors_text":"(2) TTA Techtra Ltd, 3) ((1) Department of Physics & Astrophysics, (3) Department of Microsystems, 3) Piotr Bielowka (2, Asar Ahmed (1), Ashok Kumar (1), Delhi, Faculty of Electronics, India, Md. Naimuddin (1), Michal Babij (2, Microsystems, Photonics, Poland, Poland.), Technology, University of Delhi, Wroclaw, Wroclaw University of Science","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2022-03-17T08:00:39Z","title":"The Qualification of GEM detector and its application to Imaging"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2203.09147","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":"sha256:347e01de7470d41ad34e228fbd8fb46d6b435b35df39a0493fabe7829c2b5858","target":"record","created_at":"2026-07-05T04:21:11Z","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":"7f6d51210828ad96de0d763016b9d28a83d46c1f73cfe0d0cd588b6fbed09910","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2022-03-17T08:00:39Z","title_canon_sha256":"38476a3ac24ce6d8b7bbf22e50e3519107e98f945ce38729d41a0714b7a9e7e4"},"schema_version":"1.0","source":{"id":"2203.09147","kind":"arxiv","version":1}},"canonical_sha256":"05779c9d8ed8262fcee9994264c011f6d542f7c381f6968a02d5e76b0c455e67","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"05779c9d8ed8262fcee9994264c011f6d542f7c381f6968a02d5e76b0c455e67","first_computed_at":"2026-07-05T04:21:11.474696Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T04:21:11.474696Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"t87qUy8Wlja+BbNK4o3Ei6NqnO8ka4h+yzhVd+eqT9Iz0+eKLPvoQpiBq4Qy8nFNGyMIWAkugXVxjCzI7+J2AA==","signature_status":"signed_v1","signed_at":"2026-07-05T04:21:11.475120Z","signed_message":"canonical_sha256_bytes"},"source_id":"2203.09147","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:347e01de7470d41ad34e228fbd8fb46d6b435b35df39a0493fabe7829c2b5858","sha256:c5d024fe1d7d4888dd5eccaafe6bdc6d1f988845a55b8d85f7c5179b1f425bd2"],"state_sha256":"dca241b7a000ac8f92d33ee353b5d23797c21a560c814dc130d0ae669b534691"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"7a7/NjsQCe1FPGfGUvdiHBxvTPP0VLL1ce9njkhesWWoiiPGbscY7Rx2mPBmgXVr2P/K+a7yQ9+rdUO7LKinAg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-06T21:10:06.400131Z","bundle_sha256":"afd1784b21c1c4810b9b2dbd12d0c9dbf743f5d668f8c5330b1a42b9165fcd46"}}