{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2020:U6V2FTXSATGNVY64CZNV5LBFZO","short_pith_number":"pith:U6V2FTXS","canonical_record":{"source":{"id":"2005.12336","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2020-05-25T18:42:30Z","cross_cats_sorted":["astro-ph.EP","astro-ph.SR","gr-qc"],"title_canon_sha256":"81e42886526ddbd558871775b01d0c124779c07007e6c8afdabf6c0bce47d7af","abstract_canon_sha256":"13fc560dcfd157fef2062089c5f9f4799ad50e994f7870963d5b80b301036eb3"},"schema_version":"1.0"},"canonical_sha256":"a7aba2cef204ccdae3dc165b5eac25cbb2789569fd077f3d196f8dc9cb9b0e5e","source":{"kind":"arxiv","id":"2005.12336","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2005.12336","created_at":"2026-07-05T01:07:14Z"},{"alias_kind":"arxiv_version","alias_value":"2005.12336v2","created_at":"2026-07-05T01:07:14Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2005.12336","created_at":"2026-07-05T01:07:14Z"},{"alias_kind":"pith_short_12","alias_value":"U6V2FTXSATGN","created_at":"2026-07-05T01:07:14Z"},{"alias_kind":"pith_short_16","alias_value":"U6V2FTXSATGNVY64","created_at":"2026-07-05T01:07:14Z"},{"alias_kind":"pith_short_8","alias_value":"U6V2FTXS","created_at":"2026-07-05T01:07:14Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2020:U6V2FTXSATGNVY64CZNV5LBFZO","target":"record","payload":{"canonical_record":{"source":{"id":"2005.12336","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2020-05-25T18:42:30Z","cross_cats_sorted":["astro-ph.EP","astro-ph.SR","gr-qc"],"title_canon_sha256":"81e42886526ddbd558871775b01d0c124779c07007e6c8afdabf6c0bce47d7af","abstract_canon_sha256":"13fc560dcfd157fef2062089c5f9f4799ad50e994f7870963d5b80b301036eb3"},"schema_version":"1.0"},"canonical_sha256":"a7aba2cef204ccdae3dc165b5eac25cbb2789569fd077f3d196f8dc9cb9b0e5e","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T01:07:14.231237Z","signature_b64":"H5qhwaCuz4xWclQpqgsvc6drKc0U3Gqq7dox62CJ2ySuXE88ohJDHRTUL0hcGBMrDvHHrAJ8uNKCe9Tao0QBCQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"a7aba2cef204ccdae3dc165b5eac25cbb2789569fd077f3d196f8dc9cb9b0e5e","last_reissued_at":"2026-07-05T01:07:14.230803Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T01:07:14.230803Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2005.12336","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":"2026-07-05T01:07:14Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"uUe+cGUQZbalLr5RLmZsh6wm3mZKSSnpVcgTYDXIhjr++XUO8H9YWbnI2T9e3P4nJpevo0kebanom/IRRDoRDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-11T15:27:38.406569Z"},"content_sha256":"714d0fdbefd0691f90242058870fd3b95830c6a503e856b46ad4472a768a7291","schema_version":"1.0","event_id":"sha256:714d0fdbefd0691f90242058870fd3b95830c6a503e856b46ad4472a768a7291"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2020:U6V2FTXSATGNVY64CZNV5LBFZO","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Exploration of the outer solar system with fast and small sailcraft","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.EP","astro-ph.SR","gr-qc"],"primary_cat":"astro-ph.IM","authors_text":"Abraham Loeb, Edward Witten, Kevin Parkin, Peter Klupar, Slava G. Turyshev, S. Pete Worden, Zachary Manchester","submitted_at":"2020-05-25T18:42:30Z","abstract_excerpt":"Two new interplanetary technologies have advanced in the past decade to the point where they may enable exciting, affordable missions that reach further and faster deep into the outer regions of our solar system: (i) small and capable interplanetary spacecraft and (ii) light-driven sails. Combination of these two technologies could drastically reduce travel times within the solar system. We discuss a new paradigm that involves small and fast moving sailcraft that could enable exploration of distant regions of the solar system much sooner and faster than previously considered. We present some o"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2005.12336","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2005.12336/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":"2026-07-05T01:07:14Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"5NGC5oh9A+uVwD2qzK0agyppGFqSrCbmx8r5cRReOQjONrkJ2KjRYXUQCeeHlhLRu0XxnkwUfM3CcSKiLzXaCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-11T15:27:38.407143Z"},"content_sha256":"247c1582c641161197e9581412618ff659687f1b96abbdab3dd02024f1eb48e9","schema_version":"1.0","event_id":"sha256:247c1582c641161197e9581412618ff659687f1b96abbdab3dd02024f1eb48e9"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/U6V2FTXSATGNVY64CZNV5LBFZO/bundle.json","state_url":"https://pith.science/pith/U6V2FTXSATGNVY64CZNV5LBFZO/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/U6V2FTXSATGNVY64CZNV5LBFZO/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":"2026-08-11T15:27:38Z","links":{"resolver":"https://pith.science/pith/U6V2FTXSATGNVY64CZNV5LBFZO","bundle":"https://pith.science/pith/U6V2FTXSATGNVY64CZNV5LBFZO/bundle.json","state":"https://pith.science/pith/U6V2FTXSATGNVY64CZNV5LBFZO/state.json","well_known_bundle":"https://pith.science/.well-known/pith/U6V2FTXSATGNVY64CZNV5LBFZO/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2020:U6V2FTXSATGNVY64CZNV5LBFZO","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":"13fc560dcfd157fef2062089c5f9f4799ad50e994f7870963d5b80b301036eb3","cross_cats_sorted":["astro-ph.EP","astro-ph.SR","gr-qc"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2020-05-25T18:42:30Z","title_canon_sha256":"81e42886526ddbd558871775b01d0c124779c07007e6c8afdabf6c0bce47d7af"},"schema_version":"1.0","source":{"id":"2005.12336","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2005.12336","created_at":"2026-07-05T01:07:14Z"},{"alias_kind":"arxiv_version","alias_value":"2005.12336v2","created_at":"2026-07-05T01:07:14Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2005.12336","created_at":"2026-07-05T01:07:14Z"},{"alias_kind":"pith_short_12","alias_value":"U6V2FTXSATGN","created_at":"2026-07-05T01:07:14Z"},{"alias_kind":"pith_short_16","alias_value":"U6V2FTXSATGNVY64","created_at":"2026-07-05T01:07:14Z"},{"alias_kind":"pith_short_8","alias_value":"U6V2FTXS","created_at":"2026-07-05T01:07:14Z"}],"graph_snapshots":[{"event_id":"sha256:247c1582c641161197e9581412618ff659687f1b96abbdab3dd02024f1eb48e9","target":"graph","created_at":"2026-07-05T01:07:14Z","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/2005.12336/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Two new interplanetary technologies have advanced in the past decade to the point where they may enable exciting, affordable missions that reach further and faster deep into the outer regions of our solar system: (i) small and capable interplanetary spacecraft and (ii) light-driven sails. Combination of these two technologies could drastically reduce travel times within the solar system. We discuss a new paradigm that involves small and fast moving sailcraft that could enable exploration of distant regions of the solar system much sooner and faster than previously considered. We present some o","authors_text":"Abraham Loeb, Edward Witten, Kevin Parkin, Peter Klupar, Slava G. Turyshev, S. Pete Worden, Zachary Manchester","cross_cats":["astro-ph.EP","astro-ph.SR","gr-qc"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2020-05-25T18:42:30Z","title":"Exploration of the outer solar system with fast and small sailcraft"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2005.12336","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":"sha256:714d0fdbefd0691f90242058870fd3b95830c6a503e856b46ad4472a768a7291","target":"record","created_at":"2026-07-05T01:07:14Z","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":"13fc560dcfd157fef2062089c5f9f4799ad50e994f7870963d5b80b301036eb3","cross_cats_sorted":["astro-ph.EP","astro-ph.SR","gr-qc"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2020-05-25T18:42:30Z","title_canon_sha256":"81e42886526ddbd558871775b01d0c124779c07007e6c8afdabf6c0bce47d7af"},"schema_version":"1.0","source":{"id":"2005.12336","kind":"arxiv","version":2}},"canonical_sha256":"a7aba2cef204ccdae3dc165b5eac25cbb2789569fd077f3d196f8dc9cb9b0e5e","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"a7aba2cef204ccdae3dc165b5eac25cbb2789569fd077f3d196f8dc9cb9b0e5e","first_computed_at":"2026-07-05T01:07:14.230803Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T01:07:14.230803Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"H5qhwaCuz4xWclQpqgsvc6drKc0U3Gqq7dox62CJ2ySuXE88ohJDHRTUL0hcGBMrDvHHrAJ8uNKCe9Tao0QBCQ==","signature_status":"signed_v1","signed_at":"2026-07-05T01:07:14.231237Z","signed_message":"canonical_sha256_bytes"},"source_id":"2005.12336","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:714d0fdbefd0691f90242058870fd3b95830c6a503e856b46ad4472a768a7291","sha256:247c1582c641161197e9581412618ff659687f1b96abbdab3dd02024f1eb48e9"],"state_sha256":"df9a873a5a5ce4415f3e45a0d5504802f7a8d0578320d89f39e05a45aada8d51"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"T7TDQtFLC23y9708mKqOQ+5+sdOHve9eYvNlpfuiryc9quuTjckLs/ugW3JwQ+aQwiK6QP0YrU57d/119AkvCQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-11T15:27:38.412503Z","bundle_sha256":"8ac64344c17875e98da3ae52d414a25d602aa6c20417b6093459d2fcc2bd4ae7"}}