{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2021:6XE2X3LN3F5XALYNYZNBHLRST2","short_pith_number":"pith:6XE2X3LN","canonical_record":{"source":{"id":"2111.05889","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2021-11-10T19:18:50Z","cross_cats_sorted":[],"title_canon_sha256":"730937c51b590e1b81ac85b23487dc5c7b73a4ce455ea38f30bc93cf2b03f70a","abstract_canon_sha256":"bb5e42f0de1395687d40a570018064b8b1e4c4408b518743333d631d1876c625"},"schema_version":"1.0"},"canonical_sha256":"f5c9abed6dd97b702f0dc65a13ae329e8c8cd329f5d96708336cc130fb4c9bc4","source":{"kind":"arxiv","id":"2111.05889","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2111.05889","created_at":"2026-07-05T04:18:03Z"},{"alias_kind":"arxiv_version","alias_value":"2111.05889v1","created_at":"2026-07-05T04:18:03Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2111.05889","created_at":"2026-07-05T04:18:03Z"},{"alias_kind":"pith_short_12","alias_value":"6XE2X3LN3F5X","created_at":"2026-07-05T04:18:03Z"},{"alias_kind":"pith_short_16","alias_value":"6XE2X3LN3F5XALYN","created_at":"2026-07-05T04:18:03Z"},{"alias_kind":"pith_short_8","alias_value":"6XE2X3LN","created_at":"2026-07-05T04:18:03Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2021:6XE2X3LN3F5XALYNYZNBHLRST2","target":"record","payload":{"canonical_record":{"source":{"id":"2111.05889","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2021-11-10T19:18:50Z","cross_cats_sorted":[],"title_canon_sha256":"730937c51b590e1b81ac85b23487dc5c7b73a4ce455ea38f30bc93cf2b03f70a","abstract_canon_sha256":"bb5e42f0de1395687d40a570018064b8b1e4c4408b518743333d631d1876c625"},"schema_version":"1.0"},"canonical_sha256":"f5c9abed6dd97b702f0dc65a13ae329e8c8cd329f5d96708336cc130fb4c9bc4","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T04:18:03.698214Z","signature_b64":"GJJD77QahBRBMQ+paQPMiugJ408IyxBYvrLNOBHg9XKb9+xaAglWpoUSw1GJ1eNqLzkxs1MJU1XDFCvjvv6XCg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"f5c9abed6dd97b702f0dc65a13ae329e8c8cd329f5d96708336cc130fb4c9bc4","last_reissued_at":"2026-07-05T04:18:03.697762Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T04:18:03.697762Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2111.05889","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":"2026-07-05T04:18:03Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"gJ8y5P2pOKZi4/xjTS3+BxVZLMOSARVnsuvLKsO1RUioHeMt558PwwaWK4d9wxRPBZktUBFom6ZmTKuWpizrBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-11T14:59:14.450660Z"},"content_sha256":"fe0f69052a2d582fa70c4266fbe219c3178d5c7fe032f864fffeb53c673afcbf","schema_version":"1.0","event_id":"sha256:fe0f69052a2d582fa70c4266fbe219c3178d5c7fe032f864fffeb53c673afcbf"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2021:6XE2X3LN3F5XALYNYZNBHLRST2","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Very-High Dynamic Range, 10,000 frames/second Pixel Array Detector for Electron Microscopy","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"physics.ins-det","authors_text":"David A. Muller, Gerard van Veen, Hugh T. Philipp, Julia Thom-Levy, Katherine S. Shanks, Luigi Mele, Mark W. Tate, Maurice Peemen, Pleun Dona, Reinout Hartong, Sol M. Gruner, Yu-Tsun Shao, Zhen Chen","submitted_at":"2021-11-10T19:18:50Z","abstract_excerpt":"Precision and accuracy of quantitative scanning transmission electron microscopy (STEM) methods such as ptychography, and the mapping of electric, magnetic and strain fields depend on the dose. Reasonable acquisition time requires high beam current and the ability to quantitatively detect both large and minute changes in signal. A new hybrid pixel array detector (PAD), the second-generation Electron Microscope Pixel Array Detector (EMPAD-G2), addresses this challenge by advancing the technology of a previous generation PAD, the EMPAD. The EMPAD-G2 images continuously at a frame-rates up to 10 "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2111.05889","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/2111.05889/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":"2026-07-05T04:18:03Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"gR/54P2AyN0OYjt66Rv5Gtz/6+ExJqhFgUhUKpukftqIP3zcaZSQws5NibthH1qlUcCHeUYf5QxDD/9brvfVAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-11T14:59:14.452024Z"},"content_sha256":"ad85c92739e506fe687f99ea5d79841a0b31eedbffb1380c97f927058c60a571","schema_version":"1.0","event_id":"sha256:ad85c92739e506fe687f99ea5d79841a0b31eedbffb1380c97f927058c60a571"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/6XE2X3LN3F5XALYNYZNBHLRST2/bundle.json","state_url":"https://pith.science/pith/6XE2X3LN3F5XALYNYZNBHLRST2/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/6XE2X3LN3F5XALYNYZNBHLRST2/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":"2026-08-11T14:59:14Z","links":{"resolver":"https://pith.science/pith/6XE2X3LN3F5XALYNYZNBHLRST2","bundle":"https://pith.science/pith/6XE2X3LN3F5XALYNYZNBHLRST2/bundle.json","state":"https://pith.science/pith/6XE2X3LN3F5XALYNYZNBHLRST2/state.json","well_known_bundle":"https://pith.science/.well-known/pith/6XE2X3LN3F5XALYNYZNBHLRST2/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2021:6XE2X3LN3F5XALYNYZNBHLRST2","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":"bb5e42f0de1395687d40a570018064b8b1e4c4408b518743333d631d1876c625","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2021-11-10T19:18:50Z","title_canon_sha256":"730937c51b590e1b81ac85b23487dc5c7b73a4ce455ea38f30bc93cf2b03f70a"},"schema_version":"1.0","source":{"id":"2111.05889","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2111.05889","created_at":"2026-07-05T04:18:03Z"},{"alias_kind":"arxiv_version","alias_value":"2111.05889v1","created_at":"2026-07-05T04:18:03Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2111.05889","created_at":"2026-07-05T04:18:03Z"},{"alias_kind":"pith_short_12","alias_value":"6XE2X3LN3F5X","created_at":"2026-07-05T04:18:03Z"},{"alias_kind":"pith_short_16","alias_value":"6XE2X3LN3F5XALYN","created_at":"2026-07-05T04:18:03Z"},{"alias_kind":"pith_short_8","alias_value":"6XE2X3LN","created_at":"2026-07-05T04:18:03Z"}],"graph_snapshots":[{"event_id":"sha256:ad85c92739e506fe687f99ea5d79841a0b31eedbffb1380c97f927058c60a571","target":"graph","created_at":"2026-07-05T04:18:03Z","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/2111.05889/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Precision and accuracy of quantitative scanning transmission electron microscopy (STEM) methods such as ptychography, and the mapping of electric, magnetic and strain fields depend on the dose. Reasonable acquisition time requires high beam current and the ability to quantitatively detect both large and minute changes in signal. A new hybrid pixel array detector (PAD), the second-generation Electron Microscope Pixel Array Detector (EMPAD-G2), addresses this challenge by advancing the technology of a previous generation PAD, the EMPAD. The EMPAD-G2 images continuously at a frame-rates up to 10 ","authors_text":"David A. Muller, Gerard van Veen, Hugh T. Philipp, Julia Thom-Levy, Katherine S. Shanks, Luigi Mele, Mark W. Tate, Maurice Peemen, Pleun Dona, Reinout Hartong, Sol M. Gruner, Yu-Tsun Shao, Zhen Chen","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2021-11-10T19:18:50Z","title":"Very-High Dynamic Range, 10,000 frames/second Pixel Array Detector for Electron Microscopy"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2111.05889","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:fe0f69052a2d582fa70c4266fbe219c3178d5c7fe032f864fffeb53c673afcbf","target":"record","created_at":"2026-07-05T04:18:03Z","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":"bb5e42f0de1395687d40a570018064b8b1e4c4408b518743333d631d1876c625","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2021-11-10T19:18:50Z","title_canon_sha256":"730937c51b590e1b81ac85b23487dc5c7b73a4ce455ea38f30bc93cf2b03f70a"},"schema_version":"1.0","source":{"id":"2111.05889","kind":"arxiv","version":1}},"canonical_sha256":"f5c9abed6dd97b702f0dc65a13ae329e8c8cd329f5d96708336cc130fb4c9bc4","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"f5c9abed6dd97b702f0dc65a13ae329e8c8cd329f5d96708336cc130fb4c9bc4","first_computed_at":"2026-07-05T04:18:03.697762Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T04:18:03.697762Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"GJJD77QahBRBMQ+paQPMiugJ408IyxBYvrLNOBHg9XKb9+xaAglWpoUSw1GJ1eNqLzkxs1MJU1XDFCvjvv6XCg==","signature_status":"signed_v1","signed_at":"2026-07-05T04:18:03.698214Z","signed_message":"canonical_sha256_bytes"},"source_id":"2111.05889","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:fe0f69052a2d582fa70c4266fbe219c3178d5c7fe032f864fffeb53c673afcbf","sha256:ad85c92739e506fe687f99ea5d79841a0b31eedbffb1380c97f927058c60a571"],"state_sha256":"fd40107748f57fc7b8fa78a31f1b9ddbde2f63d9f7047a412de1398800c58379"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"MuUUcg0R/w+XG6/OSDvTk1lpl7mfIacVbZX9UeAm2qG/4eq2zEIjRnM4PwIcbVHbclTEsHelM3fCh3oZDwsmAg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-11T14:59:14.458420Z","bundle_sha256":"0d990146048eb18c0321a58d6249bc5883e4f86a3dead3a46328da77f2241ba6"}}