{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2019:ICWS3LUVEIYXUXAEQQMDYXKWEI","short_pith_number":"pith:ICWS3LUV","canonical_record":{"source":{"id":"1910.00764","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2019-10-02T03:50:43Z","cross_cats_sorted":["hep-ex"],"title_canon_sha256":"37048e22180b0db35915525922f085a0e71c9d6595de900f9889165e23329949","abstract_canon_sha256":"4adca6e266ac5b4fb10ce287ae9978bdb0e6297e3e448af65c4824f5708ee186"},"schema_version":"1.0"},"canonical_sha256":"40ad2dae9522317a5c0484183c5d56220b53eb6132dcf9e8cf33b253cf7b931d","source":{"kind":"arxiv","id":"1910.00764","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1910.00764","created_at":"2026-07-05T00:09:18Z"},{"alias_kind":"arxiv_version","alias_value":"1910.00764v1","created_at":"2026-07-05T00:09:18Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1910.00764","created_at":"2026-07-05T00:09:18Z"},{"alias_kind":"pith_short_12","alias_value":"ICWS3LUVEIYX","created_at":"2026-07-05T00:09:18Z"},{"alias_kind":"pith_short_16","alias_value":"ICWS3LUVEIYXUXAE","created_at":"2026-07-05T00:09:18Z"},{"alias_kind":"pith_short_8","alias_value":"ICWS3LUV","created_at":"2026-07-05T00:09:18Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2019:ICWS3LUVEIYXUXAEQQMDYXKWEI","target":"record","payload":{"canonical_record":{"source":{"id":"1910.00764","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2019-10-02T03:50:43Z","cross_cats_sorted":["hep-ex"],"title_canon_sha256":"37048e22180b0db35915525922f085a0e71c9d6595de900f9889165e23329949","abstract_canon_sha256":"4adca6e266ac5b4fb10ce287ae9978bdb0e6297e3e448af65c4824f5708ee186"},"schema_version":"1.0"},"canonical_sha256":"40ad2dae9522317a5c0484183c5d56220b53eb6132dcf9e8cf33b253cf7b931d","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T00:09:18.863207Z","signature_b64":"hqazYx6vxUNAt5s4jMtoRZs9V/vk1bT+ECKWja35KWLpkgygbIe3Y/4088AzYYGUYBqjdirhiWiWKOwuKEbhDg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"40ad2dae9522317a5c0484183c5d56220b53eb6132dcf9e8cf33b253cf7b931d","last_reissued_at":"2026-07-05T00:09:18.862798Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T00:09:18.862798Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1910.00764","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":"2026-07-05T00:09:18Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"TF6g0vZu1HnVTYvc8HtX7NtG2gtHqYglKeGNDBjee+ikvmPgEL7CB7feah1IoFTIBwvHB8paLERWU2m7GmNcDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-20T10:40:05.888819Z"},"content_sha256":"cf7800b2735f4a0de82caef0fdd6d3cf05e3143d5d0287d981e53907a3880e19","schema_version":"1.0","event_id":"sha256:cf7800b2735f4a0de82caef0fdd6d3cf05e3143d5d0287d981e53907a3880e19"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2019:ICWS3LUVEIYXUXAEQQMDYXKWEI","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Searching for Dark Photons with PADME","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["hep-ex"],"primary_cat":"physics.ins-det","authors_text":"Andre Frankenthal","submitted_at":"2019-10-02T03:50:43Z","abstract_excerpt":"PADME is a fixed-target, missing-mass experiment at the Laboratori Nazionali di Frascati (LNF) to search for evidence of dark photons. It has collected a first set of commissioning data in 2018/2019 which will also be used for preliminary data analysis. PADME is expected to reach a sensitivity of up to $10^{-8}$ in $\\epsilon^2$ (kinetic mixing coefficient) for low-mass dark photons ($\\sim$ few MeV). Here we describe PADME's design, status of the experiment, and future plans."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1910.00764","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/1910.00764/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":"2026-07-05T00:09:18Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"l0SgbpMjrE35lot9xfJknpo7rQyez+bkQMVGOAfuV+uN39cIogvDri32qtYLfoHvqQmO7ENFdJz+AfYT8oXkAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-20T10:40:05.889175Z"},"content_sha256":"7097178e2540b6d69e817e997f6e7e660a8e9f762b4b9c31f718dd2896983d85","schema_version":"1.0","event_id":"sha256:7097178e2540b6d69e817e997f6e7e660a8e9f762b4b9c31f718dd2896983d85"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/ICWS3LUVEIYXUXAEQQMDYXKWEI/bundle.json","state_url":"https://pith.science/pith/ICWS3LUVEIYXUXAEQQMDYXKWEI/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/ICWS3LUVEIYXUXAEQQMDYXKWEI/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":"2026-07-20T10:40:05Z","links":{"resolver":"https://pith.science/pith/ICWS3LUVEIYXUXAEQQMDYXKWEI","bundle":"https://pith.science/pith/ICWS3LUVEIYXUXAEQQMDYXKWEI/bundle.json","state":"https://pith.science/pith/ICWS3LUVEIYXUXAEQQMDYXKWEI/state.json","well_known_bundle":"https://pith.science/.well-known/pith/ICWS3LUVEIYXUXAEQQMDYXKWEI/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:ICWS3LUVEIYXUXAEQQMDYXKWEI","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":"4adca6e266ac5b4fb10ce287ae9978bdb0e6297e3e448af65c4824f5708ee186","cross_cats_sorted":["hep-ex"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2019-10-02T03:50:43Z","title_canon_sha256":"37048e22180b0db35915525922f085a0e71c9d6595de900f9889165e23329949"},"schema_version":"1.0","source":{"id":"1910.00764","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1910.00764","created_at":"2026-07-05T00:09:18Z"},{"alias_kind":"arxiv_version","alias_value":"1910.00764v1","created_at":"2026-07-05T00:09:18Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1910.00764","created_at":"2026-07-05T00:09:18Z"},{"alias_kind":"pith_short_12","alias_value":"ICWS3LUVEIYX","created_at":"2026-07-05T00:09:18Z"},{"alias_kind":"pith_short_16","alias_value":"ICWS3LUVEIYXUXAE","created_at":"2026-07-05T00:09:18Z"},{"alias_kind":"pith_short_8","alias_value":"ICWS3LUV","created_at":"2026-07-05T00:09:18Z"}],"graph_snapshots":[{"event_id":"sha256:7097178e2540b6d69e817e997f6e7e660a8e9f762b4b9c31f718dd2896983d85","target":"graph","created_at":"2026-07-05T00:09:18Z","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/1910.00764/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"PADME is a fixed-target, missing-mass experiment at the Laboratori Nazionali di Frascati (LNF) to search for evidence of dark photons. It has collected a first set of commissioning data in 2018/2019 which will also be used for preliminary data analysis. PADME is expected to reach a sensitivity of up to $10^{-8}$ in $\\epsilon^2$ (kinetic mixing coefficient) for low-mass dark photons ($\\sim$ few MeV). Here we describe PADME's design, status of the experiment, and future plans.","authors_text":"Andre Frankenthal","cross_cats":["hep-ex"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2019-10-02T03:50:43Z","title":"Searching for Dark Photons with PADME"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1910.00764","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:cf7800b2735f4a0de82caef0fdd6d3cf05e3143d5d0287d981e53907a3880e19","target":"record","created_at":"2026-07-05T00:09:18Z","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":"4adca6e266ac5b4fb10ce287ae9978bdb0e6297e3e448af65c4824f5708ee186","cross_cats_sorted":["hep-ex"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2019-10-02T03:50:43Z","title_canon_sha256":"37048e22180b0db35915525922f085a0e71c9d6595de900f9889165e23329949"},"schema_version":"1.0","source":{"id":"1910.00764","kind":"arxiv","version":1}},"canonical_sha256":"40ad2dae9522317a5c0484183c5d56220b53eb6132dcf9e8cf33b253cf7b931d","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"40ad2dae9522317a5c0484183c5d56220b53eb6132dcf9e8cf33b253cf7b931d","first_computed_at":"2026-07-05T00:09:18.862798Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T00:09:18.862798Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"hqazYx6vxUNAt5s4jMtoRZs9V/vk1bT+ECKWja35KWLpkgygbIe3Y/4088AzYYGUYBqjdirhiWiWKOwuKEbhDg==","signature_status":"signed_v1","signed_at":"2026-07-05T00:09:18.863207Z","signed_message":"canonical_sha256_bytes"},"source_id":"1910.00764","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:cf7800b2735f4a0de82caef0fdd6d3cf05e3143d5d0287d981e53907a3880e19","sha256:7097178e2540b6d69e817e997f6e7e660a8e9f762b4b9c31f718dd2896983d85"],"state_sha256":"fc1466f7df7258f56a4e4323e180d410154248c0ad6c79313609f2e22f19b359"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"pIdt2udnOxlLDjyQ8gKSwXDK/JkMoUrkL0VWJbgd59rGyUeOyQ804n/NKjCpMjvhfLL9DCkISGf8g/gn2uoYAA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-20T10:40:05.891439Z","bundle_sha256":"2b9e3bbbb6df5269c7a90c1e1792f9545cee157ced352bc2c9d0ae88777d5945"}}