{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2024:LI72F6EVCE67UYTYP4OL2U52UQ","short_pith_number":"pith:LI72F6EV","canonical_record":{"source":{"id":"2404.12536","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"astro-ph.EP","submitted_at":"2024-04-18T23:07:45Z","cross_cats_sorted":["astro-ph.IM"],"title_canon_sha256":"3103c146386040ee9819069ae2d14be75f039fc007ece8a73729d6bbc1214258","abstract_canon_sha256":"532b3d2375d2c62c6014e2ca1290b7c663047a7588837316b84217fd7c7aed57"},"schema_version":"1.0"},"canonical_sha256":"5a3fa2f895113dfa62787f1cbd53baa4367c31770015e4aef17588623ec70c95","source":{"kind":"arxiv","id":"2404.12536","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2404.12536","created_at":"2026-07-05T08:09:55Z"},{"alias_kind":"arxiv_version","alias_value":"2404.12536v1","created_at":"2026-07-05T08:09:55Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2404.12536","created_at":"2026-07-05T08:09:55Z"},{"alias_kind":"pith_short_12","alias_value":"LI72F6EVCE67","created_at":"2026-07-05T08:09:55Z"},{"alias_kind":"pith_short_16","alias_value":"LI72F6EVCE67UYTY","created_at":"2026-07-05T08:09:55Z"},{"alias_kind":"pith_short_8","alias_value":"LI72F6EV","created_at":"2026-07-05T08:09:55Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2024:LI72F6EVCE67UYTYP4OL2U52UQ","target":"record","payload":{"canonical_record":{"source":{"id":"2404.12536","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"astro-ph.EP","submitted_at":"2024-04-18T23:07:45Z","cross_cats_sorted":["astro-ph.IM"],"title_canon_sha256":"3103c146386040ee9819069ae2d14be75f039fc007ece8a73729d6bbc1214258","abstract_canon_sha256":"532b3d2375d2c62c6014e2ca1290b7c663047a7588837316b84217fd7c7aed57"},"schema_version":"1.0"},"canonical_sha256":"5a3fa2f895113dfa62787f1cbd53baa4367c31770015e4aef17588623ec70c95","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T08:09:55.041177Z","signature_b64":"NQKvjY3yfiMiM81c29vzfLNxSw1W4Fo5wJg4ps8QCm8ghHJ/5iRh9qLd1tq24hNMVEO3G+gxywwRnTWIcRmYDw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"5a3fa2f895113dfa62787f1cbd53baa4367c31770015e4aef17588623ec70c95","last_reissued_at":"2026-07-05T08:09:55.040686Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T08:09:55.040686Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2404.12536","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":"2026-07-05T08:09:55Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"CabBRlza1G6RpKK2EdcIPZzJ0omp8DL7y2YR6Toa3AmWFig+awkGempGo1WMUvu/aVlQaZDeczig7932+KE0AQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-06T15:44:50.849309Z"},"content_sha256":"24de0e28b51d0dc647933e17d08d45cf1799846c4349dee495246a802db2cc26","schema_version":"1.0","event_id":"sha256:24de0e28b51d0dc647933e17d08d45cf1799846c4349dee495246a802db2cc26"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2024:LI72F6EVCE67UYTYP4OL2U52UQ","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Asteroid (101955) Bennu in the Laboratory: Properties of the Sample Collected by OSIRIS-REx","license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","headline":"","cross_cats":["astro-ph.IM"],"primary_cat":"astro-ph.EP","authors_text":"Andrew J. Ryan, Anjani T. Polit, Ann N. Nguyen, Ashley J. King, Carina A. Bennett, Cody D. Schultz, Conel M. O. D. Alexander, C. W. V. Wolner, Daniella N. DellaGiustina, Daniel P. Glavin, Dante S. Lauretta, Dionysis I. Foustoukos, Dolores H. Hill, Erika H. Blumenfeld, Filippo Tusberti, Fred Jourdan, George D. Cody, Hannah H. Kaplan, Harold C. Connolly, Heather L. Roper, Helena C. Bates, Ian A. Franchi, Jason P. Dworkin, Jens Najorka, Jessica J. Barnes, Joseph E. Aebersold, Jr., Kana Ishimaru, Kathie L. Thomas-Keprta, Kun Wang, Laurinne Blanche, Lindsay P. Keller, Loan Le, Maurizio Pajola, Melissa K. Kontogiannis, Michelle S. Thompson, Paul F. Schofield, Pierre Haenecour, Piers Koefoed, Ralph E. Milliken, Richard C. Greenwood, Robert J. Macke, Ronald-L. Ballouz, Sara S. Russell, Scott A. Eckley, Scott A. Sandford, Shogo Tachibana, Simon J. Clemett, Takahiro Hiroi, the OSIRIS-REx Sample Analysis Team, Thomas J. Zega, Timothy J. McCoy, Valerie Tu, Victoria E. Hamilton","submitted_at":"2024-04-18T23:07:45Z","abstract_excerpt":"On 24 September 2023, the NASA OSIRIS-REx mission dropped a capsule to Earth containing approximately 120 g of pristine carbonaceous regolith from Bennu. We describe the delivery and initial allocation of this asteroid sample and introduce its bulk physical, chemical, and mineralogical properties from early analyses. The regolith is very dark overall, with higher-reflectance inclusions and particles interspersed. Particle sizes range from sub-micron dust to a stone about 3.5 cm long. Millimeter-scale and larger stones typically have hummocky or angular morphologies. A subset of the stones appe"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2404.12536","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/2404.12536/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":"2026-07-05T08:09:55Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"CVssBgwyHeSGGLRjuS8iBoDU9ps7kZiXQ9ib/gXdVJH2gAWvuquy8LoGNpZC0Zu/4Mb3NfmjjMNkFMo+1nMVBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-06T15:44:50.849704Z"},"content_sha256":"738271bfb024e47101fd3d5cb58b9dabd3b5a5b25e51e43bbf5a6ad8a96bfb9a","schema_version":"1.0","event_id":"sha256:738271bfb024e47101fd3d5cb58b9dabd3b5a5b25e51e43bbf5a6ad8a96bfb9a"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/LI72F6EVCE67UYTYP4OL2U52UQ/bundle.json","state_url":"https://pith.science/pith/LI72F6EVCE67UYTYP4OL2U52UQ/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/LI72F6EVCE67UYTYP4OL2U52UQ/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":"2026-07-06T15:44:50Z","links":{"resolver":"https://pith.science/pith/LI72F6EVCE67UYTYP4OL2U52UQ","bundle":"https://pith.science/pith/LI72F6EVCE67UYTYP4OL2U52UQ/bundle.json","state":"https://pith.science/pith/LI72F6EVCE67UYTYP4OL2U52UQ/state.json","well_known_bundle":"https://pith.science/.well-known/pith/LI72F6EVCE67UYTYP4OL2U52UQ/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2024:LI72F6EVCE67UYTYP4OL2U52UQ","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":"532b3d2375d2c62c6014e2ca1290b7c663047a7588837316b84217fd7c7aed57","cross_cats_sorted":["astro-ph.IM"],"license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"astro-ph.EP","submitted_at":"2024-04-18T23:07:45Z","title_canon_sha256":"3103c146386040ee9819069ae2d14be75f039fc007ece8a73729d6bbc1214258"},"schema_version":"1.0","source":{"id":"2404.12536","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2404.12536","created_at":"2026-07-05T08:09:55Z"},{"alias_kind":"arxiv_version","alias_value":"2404.12536v1","created_at":"2026-07-05T08:09:55Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2404.12536","created_at":"2026-07-05T08:09:55Z"},{"alias_kind":"pith_short_12","alias_value":"LI72F6EVCE67","created_at":"2026-07-05T08:09:55Z"},{"alias_kind":"pith_short_16","alias_value":"LI72F6EVCE67UYTY","created_at":"2026-07-05T08:09:55Z"},{"alias_kind":"pith_short_8","alias_value":"LI72F6EV","created_at":"2026-07-05T08:09:55Z"}],"graph_snapshots":[{"event_id":"sha256:738271bfb024e47101fd3d5cb58b9dabd3b5a5b25e51e43bbf5a6ad8a96bfb9a","target":"graph","created_at":"2026-07-05T08:09:55Z","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/2404.12536/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"On 24 September 2023, the NASA OSIRIS-REx mission dropped a capsule to Earth containing approximately 120 g of pristine carbonaceous regolith from Bennu. We describe the delivery and initial allocation of this asteroid sample and introduce its bulk physical, chemical, and mineralogical properties from early analyses. The regolith is very dark overall, with higher-reflectance inclusions and particles interspersed. Particle sizes range from sub-micron dust to a stone about 3.5 cm long. Millimeter-scale and larger stones typically have hummocky or angular morphologies. A subset of the stones appe","authors_text":"Andrew J. Ryan, Anjani T. Polit, Ann N. Nguyen, Ashley J. King, Carina A. Bennett, Cody D. Schultz, Conel M. O. D. Alexander, C. W. V. Wolner, Daniella N. DellaGiustina, Daniel P. Glavin, Dante S. Lauretta, Dionysis I. Foustoukos, Dolores H. Hill, Erika H. Blumenfeld, Filippo Tusberti, Fred Jourdan, George D. Cody, Hannah H. Kaplan, Harold C. Connolly, Heather L. Roper, Helena C. Bates, Ian A. Franchi, Jason P. Dworkin, Jens Najorka, Jessica J. Barnes, Joseph E. Aebersold, Jr., Kana Ishimaru, Kathie L. Thomas-Keprta, Kun Wang, Laurinne Blanche, Lindsay P. Keller, Loan Le, Maurizio Pajola, Melissa K. Kontogiannis, Michelle S. Thompson, Paul F. Schofield, Pierre Haenecour, Piers Koefoed, Ralph E. Milliken, Richard C. Greenwood, Robert J. Macke, Ronald-L. Ballouz, Sara S. Russell, Scott A. Eckley, Scott A. Sandford, Shogo Tachibana, Simon J. Clemett, Takahiro Hiroi, the OSIRIS-REx Sample Analysis Team, Thomas J. Zega, Timothy J. McCoy, Valerie Tu, Victoria E. Hamilton","cross_cats":["astro-ph.IM"],"headline":"","license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"astro-ph.EP","submitted_at":"2024-04-18T23:07:45Z","title":"Asteroid (101955) Bennu in the Laboratory: Properties of the Sample Collected by OSIRIS-REx"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2404.12536","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":"sha256:24de0e28b51d0dc647933e17d08d45cf1799846c4349dee495246a802db2cc26","target":"record","created_at":"2026-07-05T08:09:55Z","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":"532b3d2375d2c62c6014e2ca1290b7c663047a7588837316b84217fd7c7aed57","cross_cats_sorted":["astro-ph.IM"],"license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"astro-ph.EP","submitted_at":"2024-04-18T23:07:45Z","title_canon_sha256":"3103c146386040ee9819069ae2d14be75f039fc007ece8a73729d6bbc1214258"},"schema_version":"1.0","source":{"id":"2404.12536","kind":"arxiv","version":1}},"canonical_sha256":"5a3fa2f895113dfa62787f1cbd53baa4367c31770015e4aef17588623ec70c95","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"5a3fa2f895113dfa62787f1cbd53baa4367c31770015e4aef17588623ec70c95","first_computed_at":"2026-07-05T08:09:55.040686Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T08:09:55.040686Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"NQKvjY3yfiMiM81c29vzfLNxSw1W4Fo5wJg4ps8QCm8ghHJ/5iRh9qLd1tq24hNMVEO3G+gxywwRnTWIcRmYDw==","signature_status":"signed_v1","signed_at":"2026-07-05T08:09:55.041177Z","signed_message":"canonical_sha256_bytes"},"source_id":"2404.12536","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:24de0e28b51d0dc647933e17d08d45cf1799846c4349dee495246a802db2cc26","sha256:738271bfb024e47101fd3d5cb58b9dabd3b5a5b25e51e43bbf5a6ad8a96bfb9a"],"state_sha256":"2ede3ede5d9afb7babbe6d893792e32ef035f1cca355795274f9c589213346e0"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"wS0TI/+WOvW22iVYkaJQwwsGoiXCaQQN8DYGj8mPV7fdPvd7qkRwJHWANbJYHpM6EF8obUYjI8IvT0FA7vHaDQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-06T15:44:50.852005Z","bundle_sha256":"31bd64f3a98485a7da10d7c291a2dfc36cc9d4e45c7a5d4669ed411421841dae"}}