{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:NXYB74P7UEPBVJYEOU56PKXQPN","short_pith_number":"pith:NXYB74P7","canonical_record":{"source":{"id":"1802.01377","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2018-02-05T13:12:48Z","cross_cats_sorted":[],"title_canon_sha256":"55cb8e43874b6a0b612f8c504c82fedb5485e8c628f5c39c43666b2de595eb47","abstract_canon_sha256":"8a21dee3b95815bdd8071420a869a37e8afa671912ec54a8daf0e6763d93761a"},"schema_version":"1.0"},"canonical_sha256":"6df01ff1ffa11e1aa704753be7aaf07b62fecba3e25349fcfe84dbe204364e3f","source":{"kind":"arxiv","id":"1802.01377","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1802.01377","created_at":"2026-05-18T00:24:26Z"},{"alias_kind":"arxiv_version","alias_value":"1802.01377v1","created_at":"2026-05-18T00:24:26Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1802.01377","created_at":"2026-05-18T00:24:26Z"},{"alias_kind":"pith_short_12","alias_value":"NXYB74P7UEPB","created_at":"2026-05-18T12:32:40Z"},{"alias_kind":"pith_short_16","alias_value":"NXYB74P7UEPBVJYE","created_at":"2026-05-18T12:32:40Z"},{"alias_kind":"pith_short_8","alias_value":"NXYB74P7","created_at":"2026-05-18T12:32:40Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:NXYB74P7UEPBVJYEOU56PKXQPN","target":"record","payload":{"canonical_record":{"source":{"id":"1802.01377","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2018-02-05T13:12:48Z","cross_cats_sorted":[],"title_canon_sha256":"55cb8e43874b6a0b612f8c504c82fedb5485e8c628f5c39c43666b2de595eb47","abstract_canon_sha256":"8a21dee3b95815bdd8071420a869a37e8afa671912ec54a8daf0e6763d93761a"},"schema_version":"1.0"},"canonical_sha256":"6df01ff1ffa11e1aa704753be7aaf07b62fecba3e25349fcfe84dbe204364e3f","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:24:26.565657Z","signature_b64":"o4zRF0TQvJ7Ef5OKpH518g/2/QIkFzwRa1bOoNZT4v7Fh1Yg+8EXReyGYviuDdMgQEiwoO3CUcoKQ72+/mdwAw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"6df01ff1ffa11e1aa704753be7aaf07b62fecba3e25349fcfe84dbe204364e3f","last_reissued_at":"2026-05-18T00:24:26.565133Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:24:26.565133Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1802.01377","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":"2026-05-18T00:24:26Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"iXhzjfCVneHKgvU8900pPrOO+wC7mGM0V6mO5Yz4icxlokQ/81OoG5ow/bNNYnz7HGrJh1PsTVqqqfrpqEA1Dw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-01T02:51:05.097068Z"},"content_sha256":"d3d58d8f3c629315c31fa538ed6dfd73998134a9885b4409817eca911ac6c120","schema_version":"1.0","event_id":"sha256:d3d58d8f3c629315c31fa538ed6dfd73998134a9885b4409817eca911ac6c120"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:NXYB74P7UEPBVJYEOU56PKXQPN","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The nature of the TRAPPIST-1 exoplanets","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.EP","authors_text":"Adam J. Burgasser, Amaury H.M.J. Triaud, Anthony Caldas, Artem Burdanov, Brice-Olivier Demory, Caroline Dorn, Daniel Fabrycky, David M. Hernandez, Didier Queloz, \\'Emeline Bolmont, Emmanu\\\"el Jehin, Eric Agol, Franck Selsis, James G. Ingalls, J\\'er\\'emy leconte, Julien de Wit, Kevin Heng, Laetitia Delrez, Marko Sestovic, Martin Turbet, Micha\\\"el Gillon, Sean Carey, Sean N. Raymond, Simon L. Grimm, Susan Lederer, Val\\'erie Van Grootel","submitted_at":"2018-02-05T13:12:48Z","abstract_excerpt":"Context. The TRAPPIST-1 system hosts seven Earth-sized, temperate exoplanets orbiting an ultra-cool dwarf star. As such, it represents a remarkable setting to study the formation and evolution of terrestrial planets that formed in the same protoplanetary disk. While the sizes of the TRAPPIST-1 planets are all known to better than 5% precision, their densities have significant uncertainties (between 28% and 95%) because of poor constraints on the planet's masses. Aims.The goal of this paper is to improve our knowledge of the TRAPPIST-1 planetary masses and densities using transit-timing variati"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1802.01377","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":"2026-05-18T00:24:26Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"t/l6iT0e3Nd/161NoF1kE2qAyfjenR8hIgt7/k709DI8g659hh8HmlJxVjRLL6qHyTUrHaj9jVINfys2OQmWAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-01T02:51:05.097454Z"},"content_sha256":"13826a0377f14e58e4cca94d19c37f5c4daf51631e161d7df91d4654007754f3","schema_version":"1.0","event_id":"sha256:13826a0377f14e58e4cca94d19c37f5c4daf51631e161d7df91d4654007754f3"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/NXYB74P7UEPBVJYEOU56PKXQPN/bundle.json","state_url":"https://pith.science/pith/NXYB74P7UEPBVJYEOU56PKXQPN/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/NXYB74P7UEPBVJYEOU56PKXQPN/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":"2026-06-01T02:51:05Z","links":{"resolver":"https://pith.science/pith/NXYB74P7UEPBVJYEOU56PKXQPN","bundle":"https://pith.science/pith/NXYB74P7UEPBVJYEOU56PKXQPN/bundle.json","state":"https://pith.science/pith/NXYB74P7UEPBVJYEOU56PKXQPN/state.json","well_known_bundle":"https://pith.science/.well-known/pith/NXYB74P7UEPBVJYEOU56PKXQPN/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:NXYB74P7UEPBVJYEOU56PKXQPN","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":"8a21dee3b95815bdd8071420a869a37e8afa671912ec54a8daf0e6763d93761a","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2018-02-05T13:12:48Z","title_canon_sha256":"55cb8e43874b6a0b612f8c504c82fedb5485e8c628f5c39c43666b2de595eb47"},"schema_version":"1.0","source":{"id":"1802.01377","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1802.01377","created_at":"2026-05-18T00:24:26Z"},{"alias_kind":"arxiv_version","alias_value":"1802.01377v1","created_at":"2026-05-18T00:24:26Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1802.01377","created_at":"2026-05-18T00:24:26Z"},{"alias_kind":"pith_short_12","alias_value":"NXYB74P7UEPB","created_at":"2026-05-18T12:32:40Z"},{"alias_kind":"pith_short_16","alias_value":"NXYB74P7UEPBVJYE","created_at":"2026-05-18T12:32:40Z"},{"alias_kind":"pith_short_8","alias_value":"NXYB74P7","created_at":"2026-05-18T12:32:40Z"}],"graph_snapshots":[{"event_id":"sha256:13826a0377f14e58e4cca94d19c37f5c4daf51631e161d7df91d4654007754f3","target":"graph","created_at":"2026-05-18T00:24:26Z","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":"Context. The TRAPPIST-1 system hosts seven Earth-sized, temperate exoplanets orbiting an ultra-cool dwarf star. As such, it represents a remarkable setting to study the formation and evolution of terrestrial planets that formed in the same protoplanetary disk. While the sizes of the TRAPPIST-1 planets are all known to better than 5% precision, their densities have significant uncertainties (between 28% and 95%) because of poor constraints on the planet's masses. Aims.The goal of this paper is to improve our knowledge of the TRAPPIST-1 planetary masses and densities using transit-timing variati","authors_text":"Adam J. Burgasser, Amaury H.M.J. Triaud, Anthony Caldas, Artem Burdanov, Brice-Olivier Demory, Caroline Dorn, Daniel Fabrycky, David M. Hernandez, Didier Queloz, \\'Emeline Bolmont, Emmanu\\\"el Jehin, Eric Agol, Franck Selsis, James G. Ingalls, J\\'er\\'emy leconte, Julien de Wit, Kevin Heng, Laetitia Delrez, Marko Sestovic, Martin Turbet, Micha\\\"el Gillon, Sean Carey, Sean N. Raymond, Simon L. Grimm, Susan Lederer, Val\\'erie Van Grootel","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2018-02-05T13:12:48Z","title":"The nature of the TRAPPIST-1 exoplanets"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1802.01377","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:d3d58d8f3c629315c31fa538ed6dfd73998134a9885b4409817eca911ac6c120","target":"record","created_at":"2026-05-18T00:24:26Z","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":"8a21dee3b95815bdd8071420a869a37e8afa671912ec54a8daf0e6763d93761a","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2018-02-05T13:12:48Z","title_canon_sha256":"55cb8e43874b6a0b612f8c504c82fedb5485e8c628f5c39c43666b2de595eb47"},"schema_version":"1.0","source":{"id":"1802.01377","kind":"arxiv","version":1}},"canonical_sha256":"6df01ff1ffa11e1aa704753be7aaf07b62fecba3e25349fcfe84dbe204364e3f","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"6df01ff1ffa11e1aa704753be7aaf07b62fecba3e25349fcfe84dbe204364e3f","first_computed_at":"2026-05-18T00:24:26.565133Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:24:26.565133Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"o4zRF0TQvJ7Ef5OKpH518g/2/QIkFzwRa1bOoNZT4v7Fh1Yg+8EXReyGYviuDdMgQEiwoO3CUcoKQ72+/mdwAw==","signature_status":"signed_v1","signed_at":"2026-05-18T00:24:26.565657Z","signed_message":"canonical_sha256_bytes"},"source_id":"1802.01377","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:d3d58d8f3c629315c31fa538ed6dfd73998134a9885b4409817eca911ac6c120","sha256:13826a0377f14e58e4cca94d19c37f5c4daf51631e161d7df91d4654007754f3"],"state_sha256":"09357259c23331d092051f4d11f731d98e7a81f93b7b3c0880f0ddd83eabe9ef"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ZD7LBjXCVtkiw+ejechMhrXHbQvSyp71GplGkoVNhs9pa73en9z5l2Y4VK1ZuAvO2MHnkh9LmHboKXV7tRMwBw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-01T02:51:05.099585Z","bundle_sha256":"da3e55bb32ce4ed5679c58001400430deaddf1d862375a507f56c24275491336"}}