{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:LAI5TEKZGPRIRJGNQTTTVDGPJE","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":"26ce754a605f5cc638821fe6c0b331a7d90036f8362a56f05b587edffe5aa3a5","cross_cats_sorted":["astro-ph.EP"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.gen-ph","submitted_at":"2013-03-06T20:54:46Z","title_canon_sha256":"ad7129d24f19a9439226d971ed252824678f38f43fb880f54cf1bfa43fc91206"},"schema_version":"1.0","source":{"id":"1303.2597","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1303.2597","created_at":"2026-05-18T03:31:18Z"},{"alias_kind":"arxiv_version","alias_value":"1303.2597v1","created_at":"2026-05-18T03:31:18Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1303.2597","created_at":"2026-05-18T03:31:18Z"},{"alias_kind":"pith_short_12","alias_value":"LAI5TEKZGPRI","created_at":"2026-05-18T12:27:51Z"},{"alias_kind":"pith_short_16","alias_value":"LAI5TEKZGPRIRJGN","created_at":"2026-05-18T12:27:51Z"},{"alias_kind":"pith_short_8","alias_value":"LAI5TEKZ","created_at":"2026-05-18T12:27:51Z"}],"graph_snapshots":[{"event_id":"sha256:42aeb156d197f2739b6c4c0dfbb335af694231e348f4c2d348e6c86ac80d44ca","target":"graph","created_at":"2026-05-18T03:31:18Z","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"},"paper":{"abstract_excerpt":"The ingress of micrometeorites of cometary origin with densities below ~ 1 g cm-3 into the Earth could average at least 5 tonne per day. Although much of this is burnt upon entry through the atmosphere as meteors, a non-trivial fraction (~10%) which have sizes of ~ 1 m could end up in the form of Polonnaruwa-type meteorites that have mostly gone unnoticed.","authors_text":"A. Samaranayake, Carl H. Gibson, D.H. Wallis, J.T. Wickramasinghe, J. Wallis, K. Wickramarathne, M.K. Wallis, N. C. Wickramasinghe, N. Miyake, Richard B. Hoover, S.G. Coulson","cross_cats":["astro-ph.EP"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.gen-ph","submitted_at":"2013-03-06T20:54:46Z","title":"Incidence of low-density meteoroids of the Polonnaruwa type"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1303.2597","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:f78c7dbc4866af7415f5b2ad740ac2fe626eecaf642a303c5e9e2dde365f4dac","target":"record","created_at":"2026-05-18T03:31:18Z","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":"26ce754a605f5cc638821fe6c0b331a7d90036f8362a56f05b587edffe5aa3a5","cross_cats_sorted":["astro-ph.EP"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.gen-ph","submitted_at":"2013-03-06T20:54:46Z","title_canon_sha256":"ad7129d24f19a9439226d971ed252824678f38f43fb880f54cf1bfa43fc91206"},"schema_version":"1.0","source":{"id":"1303.2597","kind":"arxiv","version":1}},"canonical_sha256":"5811d9915933e288a4cd84e73a8ccf4902ad36e504e3c0831f740dad23f8a73b","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"5811d9915933e288a4cd84e73a8ccf4902ad36e504e3c0831f740dad23f8a73b","first_computed_at":"2026-05-18T03:31:18.526106Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:31:18.526106Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"J202CsYNRsY4J3YExnofpakpgi/Sdm9PlsNJyF0WZX2IIT5eGxSEWFAbNUGBkCckOPDoQPjDXDN69jhhYXGjAw==","signature_status":"signed_v1","signed_at":"2026-05-18T03:31:18.526953Z","signed_message":"canonical_sha256_bytes"},"source_id":"1303.2597","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:f78c7dbc4866af7415f5b2ad740ac2fe626eecaf642a303c5e9e2dde365f4dac","sha256:42aeb156d197f2739b6c4c0dfbb335af694231e348f4c2d348e6c86ac80d44ca"],"state_sha256":"b10d19008ac866244c89e7cb80edf66907b2c8e00b9d919215c411ae00d29566"}