{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:ZPWEXDYAKEER3O2KRQ3F2BXAWV","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":"c51babae1ac45f8a9a66d51c6b5d8133cdd53ef79a475186bb19bca6475d821c","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2015-09-09T14:46:26Z","title_canon_sha256":"4c28a802ec2c4e3716db9c0e17e8174bed8c2ae8fa67ab078192c083bf441936"},"schema_version":"1.0","source":{"id":"1509.02794","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1509.02794","created_at":"2026-05-18T01:28:03Z"},{"alias_kind":"arxiv_version","alias_value":"1509.02794v1","created_at":"2026-05-18T01:28:03Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1509.02794","created_at":"2026-05-18T01:28:03Z"},{"alias_kind":"pith_short_12","alias_value":"ZPWEXDYAKEER","created_at":"2026-05-18T12:29:52Z"},{"alias_kind":"pith_short_16","alias_value":"ZPWEXDYAKEER3O2K","created_at":"2026-05-18T12:29:52Z"},{"alias_kind":"pith_short_8","alias_value":"ZPWEXDYA","created_at":"2026-05-18T12:29:52Z"}],"graph_snapshots":[{"event_id":"sha256:3f76dcc116a5f3137bc37ea4039d7381be9533624ad4aa79ed2d9fe16c8282ea","target":"graph","created_at":"2026-05-18T01:28:03Z","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"},"paper":{"abstract_excerpt":"We report on the first major temporal morphological changes observed on the surface of the nucleus of comet 67P/Churyumov-Gerasimenko, in the smooth terrains of the Imhotep region. We use images of the OSIRIS cameras onboard Rosetta to follow the temporal changes from 24 May 2015 to 11 July 2015. The morphological changes observed on the surface are visible in the form of roundish features, which are growing in size from a given location in a preferential direction, at a rate of 5.6 - 8.1$\\times$10$^{-5}$ m s$^{-1}$ during the observational period. The location where changes started and the co","authors_text":"A. Pommerol, A.-T. Auger, B. Davidsson, C. Barbieri, C. G\\\"uttler, C. Tubiana, D. Koschny, E. K\\\"uhrt, F. Marzari, G. Cremonese, G. Kovacs, G. Naletto, H. Rickman, H. Sierks, H. U. Keller, I. Bertini, I. Toth, J.-B. Vincent, J. J. Lopez Moreno, J. Knollenberg, J.-L. Bertaux, J. R. Kramm, L. Jorda, L. M. Lara, M. A. Barucci, M. De Cecco, M. F. A Hearn, M. Fulle, M. K\\\"uppers, M. Lazzarin, M. Massironi, M. Pajola, M. R. El-Maarry, N. Oklay, N. Thomas, O. Groussin, P. J. Guti\\'errez, P. Lamy, R. Rodrigo, S. Besse, S. Debei, S. Fornasier, S. Hviid, S. Lowry, S. Marchi, S. Mottola, V. Da Deppo, W.-H Ip","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2015-09-09T14:46:26Z","title":"Temporal morphological changes in the Imhotep region of comet 67P/Churyumov-Gerasimenko"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1509.02794","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":"sha256:601767e6f855ff5c8185c01c90b1fc8550f9617084dfd9dee0ad0ec5e1c075d0","target":"record","created_at":"2026-05-18T01:28:03Z","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":"c51babae1ac45f8a9a66d51c6b5d8133cdd53ef79a475186bb19bca6475d821c","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2015-09-09T14:46:26Z","title_canon_sha256":"4c28a802ec2c4e3716db9c0e17e8174bed8c2ae8fa67ab078192c083bf441936"},"schema_version":"1.0","source":{"id":"1509.02794","kind":"arxiv","version":1}},"canonical_sha256":"cbec4b8f0051091dbb4a8c365d06e0b5767b6a5d7467e16f1720b29e2f64cf4c","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"cbec4b8f0051091dbb4a8c365d06e0b5767b6a5d7467e16f1720b29e2f64cf4c","first_computed_at":"2026-05-18T01:28:03.118993Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:28:03.118993Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"KUbsOuDPo7N4IEMs7FXMpM/Zil1n4zrQoCzjwomwEPY39KSDni8mI7b+W4jfMuhiuvKwjNjqOxBqWtrBP+5FBw==","signature_status":"signed_v1","signed_at":"2026-05-18T01:28:03.119786Z","signed_message":"canonical_sha256_bytes"},"source_id":"1509.02794","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:601767e6f855ff5c8185c01c90b1fc8550f9617084dfd9dee0ad0ec5e1c075d0","sha256:3f76dcc116a5f3137bc37ea4039d7381be9533624ad4aa79ed2d9fe16c8282ea"],"state_sha256":"0f2da85d1cb0b207d79f9c29129d95a856714725e644414eaf44e7284689e0c0"}