{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2016:CHJOQKEKWMGX5JBLMMCLR4YOAN","short_pith_number":"pith:CHJOQKEK","canonical_record":{"source":{"id":"1608.06919","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2016-08-24T18:56:22Z","cross_cats_sorted":[],"title_canon_sha256":"427b640633f915a3fa9cdf6dda3de401cc35b14336823ac420e46ebbba83e55f","abstract_canon_sha256":"3a3327da4ea3d7337de4172c8f280e12a8bcf86c392e046366b180ef77c5e3e6"},"schema_version":"1.0"},"canonical_sha256":"11d2e8288ab30d7ea42b6304b8f30e037aaa0fb0f86a06051a1723b66a44ec8c","source":{"kind":"arxiv","id":"1608.06919","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1608.06919","created_at":"2026-05-18T00:21:57Z"},{"alias_kind":"arxiv_version","alias_value":"1608.06919v2","created_at":"2026-05-18T00:21:57Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1608.06919","created_at":"2026-05-18T00:21:57Z"},{"alias_kind":"pith_short_12","alias_value":"CHJOQKEKWMGX","created_at":"2026-05-18T12:30:09Z"},{"alias_kind":"pith_short_16","alias_value":"CHJOQKEKWMGX5JBL","created_at":"2026-05-18T12:30:09Z"},{"alias_kind":"pith_short_8","alias_value":"CHJOQKEK","created_at":"2026-05-18T12:30:09Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2016:CHJOQKEKWMGX5JBLMMCLR4YOAN","target":"record","payload":{"canonical_record":{"source":{"id":"1608.06919","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2016-08-24T18:56:22Z","cross_cats_sorted":[],"title_canon_sha256":"427b640633f915a3fa9cdf6dda3de401cc35b14336823ac420e46ebbba83e55f","abstract_canon_sha256":"3a3327da4ea3d7337de4172c8f280e12a8bcf86c392e046366b180ef77c5e3e6"},"schema_version":"1.0"},"canonical_sha256":"11d2e8288ab30d7ea42b6304b8f30e037aaa0fb0f86a06051a1723b66a44ec8c","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:21:57.229918Z","signature_b64":"KexxAdNZHmyaOTy9Wzh2h4aFHqDbsBr3kNXrcUxrrYn8S9RA3tu3I7RCGTWbhlMlVxQbBQGyZItbizrIsZZ+DQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"11d2e8288ab30d7ea42b6304b8f30e037aaa0fb0f86a06051a1723b66a44ec8c","last_reissued_at":"2026-05-18T00:21:57.229395Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:21:57.229395Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1608.06919","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T00:21:57Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"uhJAk+pFHVuqM0W4iqQmm4HLMFPGrUJUBbW529hdzrI6qowJkXyUryYSpadCX8xfWKThnZJDhgdkYDsnSWhyBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-12T01:46:01.193917Z"},"content_sha256":"b3e0aca592c7cddb3a203c7693dfec43eb3e21e2de69e6eaf43333ea0491babd","schema_version":"1.0","event_id":"sha256:b3e0aca592c7cddb3a203c7693dfec43eb3e21e2de69e6eaf43333ea0491babd"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2016:CHJOQKEKWMGX5JBLMMCLR4YOAN","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The Habitability of Proxima Centauri b I: Evolutionary Scenarios","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.EP","authors_text":"Andrew Lincowski, Benjamin Guyer, Daniel Foreman-Mackey, David Crisp, David P. Fleming, Diego V. McDonald, Eddie Schwieterman, Giada Arney, Jacob Lustig-Yaeger, Nathan A. Kaib, Peter E. Driscoll, Rodrigo Luger, Rory Barnes, Russell Deitrick, Shawn D. Domagal-Goldman, Thomas R. Quinn, Victoria S. Meadows","submitted_at":"2016-08-24T18:56:22Z","abstract_excerpt":"We analyze the evolution of the potentially habitable planet Proxima Centauri b to identify environmental factors that affect its long-term habitability. We consider physical processes acting on size scales ranging from the galactic to the stellar system to the planet's core. We find that there is a significant probability that Proxima Centauri has had encounters with its companion stars, Alpha Centauri A and B, that are close enough to destabilize an extended planetary system. If the system has an additional planet, as suggested by the discovery data, then it may perturb planet b's eccentrici"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1608.06919","kind":"arxiv","version":2},"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":"2026-05-18T00:21:57Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"9HXpoGAnivqyDY/ACVX7XcYAPLEfzjmYsSZrjpWI1S3Y4AjeHLipa4qFT6848h1n0N0Q5OjosuYN2qIO9mJmDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-12T01:46:01.194269Z"},"content_sha256":"e9e4277d02c7fb3e547d2fe6688c55546fc2633be8f2adfcde4f163208f519f5","schema_version":"1.0","event_id":"sha256:e9e4277d02c7fb3e547d2fe6688c55546fc2633be8f2adfcde4f163208f519f5"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/CHJOQKEKWMGX5JBLMMCLR4YOAN/bundle.json","state_url":"https://pith.science/pith/CHJOQKEKWMGX5JBLMMCLR4YOAN/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/CHJOQKEKWMGX5JBLMMCLR4YOAN/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":"2026-06-12T01:46:01Z","links":{"resolver":"https://pith.science/pith/CHJOQKEKWMGX5JBLMMCLR4YOAN","bundle":"https://pith.science/pith/CHJOQKEKWMGX5JBLMMCLR4YOAN/bundle.json","state":"https://pith.science/pith/CHJOQKEKWMGX5JBLMMCLR4YOAN/state.json","well_known_bundle":"https://pith.science/.well-known/pith/CHJOQKEKWMGX5JBLMMCLR4YOAN/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:CHJOQKEKWMGX5JBLMMCLR4YOAN","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":"3a3327da4ea3d7337de4172c8f280e12a8bcf86c392e046366b180ef77c5e3e6","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2016-08-24T18:56:22Z","title_canon_sha256":"427b640633f915a3fa9cdf6dda3de401cc35b14336823ac420e46ebbba83e55f"},"schema_version":"1.0","source":{"id":"1608.06919","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1608.06919","created_at":"2026-05-18T00:21:57Z"},{"alias_kind":"arxiv_version","alias_value":"1608.06919v2","created_at":"2026-05-18T00:21:57Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1608.06919","created_at":"2026-05-18T00:21:57Z"},{"alias_kind":"pith_short_12","alias_value":"CHJOQKEKWMGX","created_at":"2026-05-18T12:30:09Z"},{"alias_kind":"pith_short_16","alias_value":"CHJOQKEKWMGX5JBL","created_at":"2026-05-18T12:30:09Z"},{"alias_kind":"pith_short_8","alias_value":"CHJOQKEK","created_at":"2026-05-18T12:30:09Z"}],"graph_snapshots":[{"event_id":"sha256:e9e4277d02c7fb3e547d2fe6688c55546fc2633be8f2adfcde4f163208f519f5","target":"graph","created_at":"2026-05-18T00:21:57Z","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 analyze the evolution of the potentially habitable planet Proxima Centauri b to identify environmental factors that affect its long-term habitability. We consider physical processes acting on size scales ranging from the galactic to the stellar system to the planet's core. We find that there is a significant probability that Proxima Centauri has had encounters with its companion stars, Alpha Centauri A and B, that are close enough to destabilize an extended planetary system. If the system has an additional planet, as suggested by the discovery data, then it may perturb planet b's eccentrici","authors_text":"Andrew Lincowski, Benjamin Guyer, Daniel Foreman-Mackey, David Crisp, David P. Fleming, Diego V. McDonald, Eddie Schwieterman, Giada Arney, Jacob Lustig-Yaeger, Nathan A. Kaib, Peter E. Driscoll, Rodrigo Luger, Rory Barnes, Russell Deitrick, Shawn D. Domagal-Goldman, Thomas R. Quinn, Victoria S. Meadows","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2016-08-24T18:56:22Z","title":"The Habitability of Proxima Centauri b I: Evolutionary Scenarios"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1608.06919","kind":"arxiv","version":2},"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:b3e0aca592c7cddb3a203c7693dfec43eb3e21e2de69e6eaf43333ea0491babd","target":"record","created_at":"2026-05-18T00:21:57Z","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":"3a3327da4ea3d7337de4172c8f280e12a8bcf86c392e046366b180ef77c5e3e6","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2016-08-24T18:56:22Z","title_canon_sha256":"427b640633f915a3fa9cdf6dda3de401cc35b14336823ac420e46ebbba83e55f"},"schema_version":"1.0","source":{"id":"1608.06919","kind":"arxiv","version":2}},"canonical_sha256":"11d2e8288ab30d7ea42b6304b8f30e037aaa0fb0f86a06051a1723b66a44ec8c","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"11d2e8288ab30d7ea42b6304b8f30e037aaa0fb0f86a06051a1723b66a44ec8c","first_computed_at":"2026-05-18T00:21:57.229395Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:21:57.229395Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"KexxAdNZHmyaOTy9Wzh2h4aFHqDbsBr3kNXrcUxrrYn8S9RA3tu3I7RCGTWbhlMlVxQbBQGyZItbizrIsZZ+DQ==","signature_status":"signed_v1","signed_at":"2026-05-18T00:21:57.229918Z","signed_message":"canonical_sha256_bytes"},"source_id":"1608.06919","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:b3e0aca592c7cddb3a203c7693dfec43eb3e21e2de69e6eaf43333ea0491babd","sha256:e9e4277d02c7fb3e547d2fe6688c55546fc2633be8f2adfcde4f163208f519f5"],"state_sha256":"3ad2439334a9cc66623f291e8f0751d29c12a5407868d8da83e42b3ba9d74da9"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"r11czvUxdBhWG6SwwQOth7XQb147pnHS6tfU7FrZyjPkcsBowPBzWkEOyeUgXTiv2Nyqb2USM2KoWE3byWN5AQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-12T01:46:01.196287Z","bundle_sha256":"d9cea325846afdb1a3712977616a10224f5b2eebacdb27163fb5a1ded7f313b2"}}