{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2016:V43ZPXWN4FAFAG526Q7H3ZK6RC","short_pith_number":"pith:V43ZPXWN","canonical_record":{"source":{"id":"1604.06328","kind":"arxiv","version":4},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2016-04-21T14:43:23Z","cross_cats_sorted":[],"title_canon_sha256":"d374399095f93262e523882c7f8a4f9896c9b890cd85671b5c468b9902ce6281","abstract_canon_sha256":"756b5fa0a1ac128d7e2fd5caf8071b33980da5073545b20340455ccd4a2b8d6c"},"schema_version":"1.0"},"canonical_sha256":"af3797decde140501bbaf43e7de55e8899a38c66a5aa13949e04b792fd78ae8f","source":{"kind":"arxiv","id":"1604.06328","version":4},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1604.06328","created_at":"2026-05-18T00:54:36Z"},{"alias_kind":"arxiv_version","alias_value":"1604.06328v4","created_at":"2026-05-18T00:54:36Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1604.06328","created_at":"2026-05-18T00:54:36Z"},{"alias_kind":"pith_short_12","alias_value":"V43ZPXWN4FAF","created_at":"2026-05-18T12:30:46Z"},{"alias_kind":"pith_short_16","alias_value":"V43ZPXWN4FAFAG52","created_at":"2026-05-18T12:30:46Z"},{"alias_kind":"pith_short_8","alias_value":"V43ZPXWN","created_at":"2026-05-18T12:30:46Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2016:V43ZPXWN4FAFAG526Q7H3ZK6RC","target":"record","payload":{"canonical_record":{"source":{"id":"1604.06328","kind":"arxiv","version":4},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2016-04-21T14:43:23Z","cross_cats_sorted":[],"title_canon_sha256":"d374399095f93262e523882c7f8a4f9896c9b890cd85671b5c468b9902ce6281","abstract_canon_sha256":"756b5fa0a1ac128d7e2fd5caf8071b33980da5073545b20340455ccd4a2b8d6c"},"schema_version":"1.0"},"canonical_sha256":"af3797decde140501bbaf43e7de55e8899a38c66a5aa13949e04b792fd78ae8f","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:54:36.834864Z","signature_b64":"vbtYqOQqZQMu8MRG7iEu84x8kAlQs7MLTh9tw44w+H6jC5xVttQ9Ts86rOf998L7m6kyzA6i6x4ZjaOuIreLAg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"af3797decde140501bbaf43e7de55e8899a38c66a5aa13949e04b792fd78ae8f","last_reissued_at":"2026-05-18T00:54:36.834433Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:54:36.834433Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1604.06328","source_version":4,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T00:54:36Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"tpJxkApGnxoxSR5NVgh3zPsZRE/5DmejkayXDOT82kBbkFkriOC6TDta9oAl6Z1wXr7b07w8nzYSygoWLx2dDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-04T20:10:53.243252Z"},"content_sha256":"da2e2407bac63db7b81f875d36ca71f3074b4107b0a0f37c5d35f7307a0fe72d","schema_version":"1.0","event_id":"sha256:da2e2407bac63db7b81f875d36ca71f3074b4107b0a0f37c5d35f7307a0fe72d"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2016:V43ZPXWN4FAFAG526Q7H3ZK6RC","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The near-Earth asteroid population from two decades of observations","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.EP","authors_text":"Pasquale Tricarico","submitted_at":"2016-04-21T14:43:23Z","abstract_excerpt":"Determining the size and orbital distribution of the population of near-Earth asteroids (NEAs) is the focus of intense research, with the most recent models converging to a population of approximately $1000$ NEAs larger than 1 km and up to approximately $10^9$ NEAs with absolute magnitude $H<30$. We present an analysis of the combined observations of nine of the leading asteroid surveys over the past two decades, and show that for an absolute magnitude $H<17.75$, which is often taken as proxy for an average diameter larger than 1 km, the population of NEAs is $920\\pm10$, lower than other recen"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1604.06328","kind":"arxiv","version":4},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"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":"2026-05-18T00:54:36Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"2zy3t135HGGHq7JZo65baunTEZ8lhHriUv5uVkAqp8MxXi332bxoY/4qhPeB5rUeHXyxko+mP8YCecv/gg3EBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-04T20:10:53.243688Z"},"content_sha256":"91483556a446fb453255a55c0a2f5088ae8a90e8ee27a7372911ea89893f18da","schema_version":"1.0","event_id":"sha256:91483556a446fb453255a55c0a2f5088ae8a90e8ee27a7372911ea89893f18da"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/V43ZPXWN4FAFAG526Q7H3ZK6RC/bundle.json","state_url":"https://pith.science/pith/V43ZPXWN4FAFAG526Q7H3ZK6RC/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/V43ZPXWN4FAFAG526Q7H3ZK6RC/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":"2026-06-04T20:10:53Z","links":{"resolver":"https://pith.science/pith/V43ZPXWN4FAFAG526Q7H3ZK6RC","bundle":"https://pith.science/pith/V43ZPXWN4FAFAG526Q7H3ZK6RC/bundle.json","state":"https://pith.science/pith/V43ZPXWN4FAFAG526Q7H3ZK6RC/state.json","well_known_bundle":"https://pith.science/.well-known/pith/V43ZPXWN4FAFAG526Q7H3ZK6RC/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:V43ZPXWN4FAFAG526Q7H3ZK6RC","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":"756b5fa0a1ac128d7e2fd5caf8071b33980da5073545b20340455ccd4a2b8d6c","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2016-04-21T14:43:23Z","title_canon_sha256":"d374399095f93262e523882c7f8a4f9896c9b890cd85671b5c468b9902ce6281"},"schema_version":"1.0","source":{"id":"1604.06328","kind":"arxiv","version":4}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1604.06328","created_at":"2026-05-18T00:54:36Z"},{"alias_kind":"arxiv_version","alias_value":"1604.06328v4","created_at":"2026-05-18T00:54:36Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1604.06328","created_at":"2026-05-18T00:54:36Z"},{"alias_kind":"pith_short_12","alias_value":"V43ZPXWN4FAF","created_at":"2026-05-18T12:30:46Z"},{"alias_kind":"pith_short_16","alias_value":"V43ZPXWN4FAFAG52","created_at":"2026-05-18T12:30:46Z"},{"alias_kind":"pith_short_8","alias_value":"V43ZPXWN","created_at":"2026-05-18T12:30:46Z"}],"graph_snapshots":[{"event_id":"sha256:91483556a446fb453255a55c0a2f5088ae8a90e8ee27a7372911ea89893f18da","target":"graph","created_at":"2026-05-18T00:54:36Z","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":"Determining the size and orbital distribution of the population of near-Earth asteroids (NEAs) is the focus of intense research, with the most recent models converging to a population of approximately $1000$ NEAs larger than 1 km and up to approximately $10^9$ NEAs with absolute magnitude $H<30$. We present an analysis of the combined observations of nine of the leading asteroid surveys over the past two decades, and show that for an absolute magnitude $H<17.75$, which is often taken as proxy for an average diameter larger than 1 km, the population of NEAs is $920\\pm10$, lower than other recen","authors_text":"Pasquale Tricarico","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2016-04-21T14:43:23Z","title":"The near-Earth asteroid population from two decades of observations"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1604.06328","kind":"arxiv","version":4},"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:da2e2407bac63db7b81f875d36ca71f3074b4107b0a0f37c5d35f7307a0fe72d","target":"record","created_at":"2026-05-18T00:54:36Z","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":"756b5fa0a1ac128d7e2fd5caf8071b33980da5073545b20340455ccd4a2b8d6c","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2016-04-21T14:43:23Z","title_canon_sha256":"d374399095f93262e523882c7f8a4f9896c9b890cd85671b5c468b9902ce6281"},"schema_version":"1.0","source":{"id":"1604.06328","kind":"arxiv","version":4}},"canonical_sha256":"af3797decde140501bbaf43e7de55e8899a38c66a5aa13949e04b792fd78ae8f","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"af3797decde140501bbaf43e7de55e8899a38c66a5aa13949e04b792fd78ae8f","first_computed_at":"2026-05-18T00:54:36.834433Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:54:36.834433Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"vbtYqOQqZQMu8MRG7iEu84x8kAlQs7MLTh9tw44w+H6jC5xVttQ9Ts86rOf998L7m6kyzA6i6x4ZjaOuIreLAg==","signature_status":"signed_v1","signed_at":"2026-05-18T00:54:36.834864Z","signed_message":"canonical_sha256_bytes"},"source_id":"1604.06328","source_kind":"arxiv","source_version":4}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:da2e2407bac63db7b81f875d36ca71f3074b4107b0a0f37c5d35f7307a0fe72d","sha256:91483556a446fb453255a55c0a2f5088ae8a90e8ee27a7372911ea89893f18da"],"state_sha256":"8a1c9e813535d9d9f08907e6e9329e9108da145062d5542bbf3a4a7361d0d9e1"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"lbkEAshx4E1Gb3U/MHXWFfNge5QAxglT3HmCJSbqvHUVfLjeUm0eVONTF/sA7lq2BsesNUdZEK2T8RyiOP7eCA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-04T20:10:53.245704Z","bundle_sha256":"76f015a897c1053acb7964c3de18a7cdf6022523cce49c99bc9a88d9379ad67d"}}