{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2019:UXRHBVPZM2CWHTBDIMJAVV3SPZ","short_pith_number":"pith:UXRHBVPZ","canonical_record":{"source":{"id":"1905.11298","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2019-05-27T15:32:10Z","cross_cats_sorted":[],"title_canon_sha256":"c1e0d56dbf34b952f515b0e335cb80d06fd148247656778b3613e4bb67e38b3f","abstract_canon_sha256":"c76e0829e041f2b5a73a30432dee7cfe7c3becc189a482a023f25d7429e45746"},"schema_version":"1.0"},"canonical_sha256":"a5e270d5f9668563cc2343120ad7727e68f21cba14a1f01e95cc02eca8e94e66","source":{"kind":"arxiv","id":"1905.11298","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1905.11298","created_at":"2026-05-17T23:44:10Z"},{"alias_kind":"arxiv_version","alias_value":"1905.11298v1","created_at":"2026-05-17T23:44:10Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1905.11298","created_at":"2026-05-17T23:44:10Z"},{"alias_kind":"pith_short_12","alias_value":"UXRHBVPZM2CW","created_at":"2026-05-18T12:33:30Z"},{"alias_kind":"pith_short_16","alias_value":"UXRHBVPZM2CWHTBD","created_at":"2026-05-18T12:33:30Z"},{"alias_kind":"pith_short_8","alias_value":"UXRHBVPZ","created_at":"2026-05-18T12:33:30Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2019:UXRHBVPZM2CWHTBDIMJAVV3SPZ","target":"record","payload":{"canonical_record":{"source":{"id":"1905.11298","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2019-05-27T15:32:10Z","cross_cats_sorted":[],"title_canon_sha256":"c1e0d56dbf34b952f515b0e335cb80d06fd148247656778b3613e4bb67e38b3f","abstract_canon_sha256":"c76e0829e041f2b5a73a30432dee7cfe7c3becc189a482a023f25d7429e45746"},"schema_version":"1.0"},"canonical_sha256":"a5e270d5f9668563cc2343120ad7727e68f21cba14a1f01e95cc02eca8e94e66","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:44:10.749439Z","signature_b64":"lI5FL/RWeOysUpBu+X/AOsjKzxOFMWmmT9DJL7VgH93/jf+/bJPRGFOzg5MMjVY0FB7BjLcpfD/C9SZ14ZQaAQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"a5e270d5f9668563cc2343120ad7727e68f21cba14a1f01e95cc02eca8e94e66","last_reissued_at":"2026-05-17T23:44:10.748799Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:44:10.748799Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1905.11298","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":"2026-05-17T23:44:10Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"2o26jopPff0GR2Bs5VfCeqUPJreuxs/8vIVL94cXfVWxGnucxqRZC+y6EQaNakdGIrr2gzxtTrpJnghS2HpvAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-31T21:47:21.272988Z"},"content_sha256":"a170a52d88eb256d2b46bebb244381895d07805b2c2c68cf77614e311d8eb968","schema_version":"1.0","event_id":"sha256:a170a52d88eb256d2b46bebb244381895d07805b2c2c68cf77614e311d8eb968"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2019:UXRHBVPZM2CWHTBDIMJAVV3SPZ","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Water delivery to the TRAPPIST-1 planets","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.EP","authors_text":"Zolt\\'an Dencs, Zsolt Reg\\'aly","submitted_at":"2019-05-27T15:32:10Z","abstract_excerpt":"Three of the seven rocky planets (e, f, and g) in TRAPPIST-1 system orbit in the habitable zone of the host star. Therefore, water can be in liquid state at their surface being essential for life. Recent studies suggest that these planets formed beyond the snow line in a water-rich region. The initial water reservoir can be lost during the planet formation due to the stellar activity of the infant low-mass star. However, a potential subsequent water delivery event, like the late heavy bombardment (LHB) in the Solar System, can replenish planetary water reservoirs. To study this water delivery "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1905.11298","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":""},"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":"2026-05-17T23:44:10Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"vpGlR/uYhok92KUwAxMkFYC+rmgM17pUgPSNu3R35p8r6h/TNxrhbjES4GbInRZMzJ9sDX27pfwnIH/t9vuZBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-31T21:47:21.273530Z"},"content_sha256":"222108b04b117414a7c5ccb7f426685dca4bb8cb499f0a29ecb801a1c898f6dc","schema_version":"1.0","event_id":"sha256:222108b04b117414a7c5ccb7f426685dca4bb8cb499f0a29ecb801a1c898f6dc"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/UXRHBVPZM2CWHTBDIMJAVV3SPZ/bundle.json","state_url":"https://pith.science/pith/UXRHBVPZM2CWHTBDIMJAVV3SPZ/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/UXRHBVPZM2CWHTBDIMJAVV3SPZ/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":"2026-05-31T21:47:21Z","links":{"resolver":"https://pith.science/pith/UXRHBVPZM2CWHTBDIMJAVV3SPZ","bundle":"https://pith.science/pith/UXRHBVPZM2CWHTBDIMJAVV3SPZ/bundle.json","state":"https://pith.science/pith/UXRHBVPZM2CWHTBDIMJAVV3SPZ/state.json","well_known_bundle":"https://pith.science/.well-known/pith/UXRHBVPZM2CWHTBDIMJAVV3SPZ/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:UXRHBVPZM2CWHTBDIMJAVV3SPZ","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":"c76e0829e041f2b5a73a30432dee7cfe7c3becc189a482a023f25d7429e45746","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2019-05-27T15:32:10Z","title_canon_sha256":"c1e0d56dbf34b952f515b0e335cb80d06fd148247656778b3613e4bb67e38b3f"},"schema_version":"1.0","source":{"id":"1905.11298","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1905.11298","created_at":"2026-05-17T23:44:10Z"},{"alias_kind":"arxiv_version","alias_value":"1905.11298v1","created_at":"2026-05-17T23:44:10Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1905.11298","created_at":"2026-05-17T23:44:10Z"},{"alias_kind":"pith_short_12","alias_value":"UXRHBVPZM2CW","created_at":"2026-05-18T12:33:30Z"},{"alias_kind":"pith_short_16","alias_value":"UXRHBVPZM2CWHTBD","created_at":"2026-05-18T12:33:30Z"},{"alias_kind":"pith_short_8","alias_value":"UXRHBVPZ","created_at":"2026-05-18T12:33:30Z"}],"graph_snapshots":[{"event_id":"sha256:222108b04b117414a7c5ccb7f426685dca4bb8cb499f0a29ecb801a1c898f6dc","target":"graph","created_at":"2026-05-17T23:44:10Z","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":"Three of the seven rocky planets (e, f, and g) in TRAPPIST-1 system orbit in the habitable zone of the host star. Therefore, water can be in liquid state at their surface being essential for life. Recent studies suggest that these planets formed beyond the snow line in a water-rich region. The initial water reservoir can be lost during the planet formation due to the stellar activity of the infant low-mass star. However, a potential subsequent water delivery event, like the late heavy bombardment (LHB) in the Solar System, can replenish planetary water reservoirs. To study this water delivery ","authors_text":"Zolt\\'an Dencs, Zsolt Reg\\'aly","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2019-05-27T15:32:10Z","title":"Water delivery to the TRAPPIST-1 planets"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1905.11298","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:a170a52d88eb256d2b46bebb244381895d07805b2c2c68cf77614e311d8eb968","target":"record","created_at":"2026-05-17T23:44:10Z","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":"c76e0829e041f2b5a73a30432dee7cfe7c3becc189a482a023f25d7429e45746","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2019-05-27T15:32:10Z","title_canon_sha256":"c1e0d56dbf34b952f515b0e335cb80d06fd148247656778b3613e4bb67e38b3f"},"schema_version":"1.0","source":{"id":"1905.11298","kind":"arxiv","version":1}},"canonical_sha256":"a5e270d5f9668563cc2343120ad7727e68f21cba14a1f01e95cc02eca8e94e66","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"a5e270d5f9668563cc2343120ad7727e68f21cba14a1f01e95cc02eca8e94e66","first_computed_at":"2026-05-17T23:44:10.748799Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:44:10.748799Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"lI5FL/RWeOysUpBu+X/AOsjKzxOFMWmmT9DJL7VgH93/jf+/bJPRGFOzg5MMjVY0FB7BjLcpfD/C9SZ14ZQaAQ==","signature_status":"signed_v1","signed_at":"2026-05-17T23:44:10.749439Z","signed_message":"canonical_sha256_bytes"},"source_id":"1905.11298","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:a170a52d88eb256d2b46bebb244381895d07805b2c2c68cf77614e311d8eb968","sha256:222108b04b117414a7c5ccb7f426685dca4bb8cb499f0a29ecb801a1c898f6dc"],"state_sha256":"23e44d755be5e2d55a438e1feba5b24fed004aef58d7a894f03c1d01a365200e"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"eq7fkPXDCq6Ictu1oSFWKchNn2ZtztLUczbM5iEtZSZ2wtEB2fiaPfaQRwsInRHesdhvERWebY4Pv+VXoi6PAQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-31T21:47:21.276133Z","bundle_sha256":"f0d67178461130047f651a0620386ff201cb101e898ab33b27f5a7cdedc05a37"}}