{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2017:UWHVFGMA5TZZG2NVIZKZH6TKW7","short_pith_number":"pith:UWHVFGMA","canonical_record":{"source":{"id":"1709.00418","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2017-09-01T18:00:03Z","cross_cats_sorted":["astro-ph.GA","astro-ph.SR","physics.geo-ph"],"title_canon_sha256":"a3e2c620db57271ae6c06ded4c071c890e9746e2e78fa59c52ae7e82566776e3","abstract_canon_sha256":"3ea6ffec9ddb6904eb24065bbd73a704161c7301c5fca775364633a841020122"},"schema_version":"1.0"},"canonical_sha256":"a58f529980ecf39369b5465593fa6ab7effb94d475e28f319888279124712310","source":{"kind":"arxiv","id":"1709.00418","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1709.00418","created_at":"2026-05-18T00:31:11Z"},{"alias_kind":"arxiv_version","alias_value":"1709.00418v1","created_at":"2026-05-18T00:31:11Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1709.00418","created_at":"2026-05-18T00:31:11Z"},{"alias_kind":"pith_short_12","alias_value":"UWHVFGMA5TZZ","created_at":"2026-05-18T12:31:49Z"},{"alias_kind":"pith_short_16","alias_value":"UWHVFGMA5TZZG2NV","created_at":"2026-05-18T12:31:49Z"},{"alias_kind":"pith_short_8","alias_value":"UWHVFGMA","created_at":"2026-05-18T12:31:49Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2017:UWHVFGMA5TZZG2NVIZKZH6TKW7","target":"record","payload":{"canonical_record":{"source":{"id":"1709.00418","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2017-09-01T18:00:03Z","cross_cats_sorted":["astro-ph.GA","astro-ph.SR","physics.geo-ph"],"title_canon_sha256":"a3e2c620db57271ae6c06ded4c071c890e9746e2e78fa59c52ae7e82566776e3","abstract_canon_sha256":"3ea6ffec9ddb6904eb24065bbd73a704161c7301c5fca775364633a841020122"},"schema_version":"1.0"},"canonical_sha256":"a58f529980ecf39369b5465593fa6ab7effb94d475e28f319888279124712310","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:31:11.770859Z","signature_b64":"r2s+sAse2XMn+mZqAhF6XFeI3st5Lw+DmtZWBc8lMHHBLmyhmqkD/C4bBYr3wuuvQDMj1NHj3aZmDnpyK44uAw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"a58f529980ecf39369b5465593fa6ab7effb94d475e28f319888279124712310","last_reissued_at":"2026-05-18T00:31:11.770112Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:31:11.770112Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1709.00418","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":"2026-05-18T00:31:11Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"PInQ1m6JLFyPM6YcjcbiiZtGZVlByXQ7+hTKou8uUxvXNnYB5jXTX3nGrmX6SmDwRcGz1tal+7s85BwFDKmADQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-01T16:37:50.993121Z"},"content_sha256":"5afbd02e3ebc9dda9a87fb99699206dc115d873ed3dd6993fa42e672930ad506","schema_version":"1.0","event_id":"sha256:5afbd02e3ebc9dda9a87fb99699206dc115d873ed3dd6993fa42e672930ad506"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2017:UWHVFGMA5TZZG2NVIZKZH6TKW7","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Was Planet 9 captured in the Sun's natal star-forming region?","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.GA","astro-ph.SR","physics.geo-ph"],"primary_cat":"astro-ph.EP","authors_text":"2. Geophysics, 3), 3. Astrophysics, ETH Zurich, Richard J. Parker (1), Sascha P. Quanz (3) (1. University of Sheffield, Switzerland, Switzerland), Tim Lichtenberg (2, UK","submitted_at":"2017-09-01T18:00:03Z","abstract_excerpt":"The presence of an unseen `Planet 9' on the outskirts of the Solar system has been invoked to explain the unexpected clustering of the orbits of several Edgeworth--Kuiper Belt Objects. We use $N$-body simulations to investigate the probability that Planet 9 was a free-floating planet (FFLOP) that was captured by the Sun in its birth star-formation environment. We find that only 1 - 6 per cent of FFLOPs are ensnared by stars, even with the most optimal initial conditions for capture in star-forming regions (one FFLOP per star, and highly correlated stellar velocities to facilitate capture). Dep"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1709.00418","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":"2026-05-18T00:31:11Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"A9R/ybzdl8FG6rKJXqufMJCls9Vi0I8YCcKdtt2yBoZQi3qbylFK0G/sxf/1iMR11gPGi8qF2aY6Xq+ggi1OCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-01T16:37:50.993483Z"},"content_sha256":"988f81b51f2ff30ae25181cc95736745ef503a75d6453531742ad7149336cb37","schema_version":"1.0","event_id":"sha256:988f81b51f2ff30ae25181cc95736745ef503a75d6453531742ad7149336cb37"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/UWHVFGMA5TZZG2NVIZKZH6TKW7/bundle.json","state_url":"https://pith.science/pith/UWHVFGMA5TZZG2NVIZKZH6TKW7/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/UWHVFGMA5TZZG2NVIZKZH6TKW7/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":"2026-06-01T16:37:50Z","links":{"resolver":"https://pith.science/pith/UWHVFGMA5TZZG2NVIZKZH6TKW7","bundle":"https://pith.science/pith/UWHVFGMA5TZZG2NVIZKZH6TKW7/bundle.json","state":"https://pith.science/pith/UWHVFGMA5TZZG2NVIZKZH6TKW7/state.json","well_known_bundle":"https://pith.science/.well-known/pith/UWHVFGMA5TZZG2NVIZKZH6TKW7/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:UWHVFGMA5TZZG2NVIZKZH6TKW7","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":"3ea6ffec9ddb6904eb24065bbd73a704161c7301c5fca775364633a841020122","cross_cats_sorted":["astro-ph.GA","astro-ph.SR","physics.geo-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2017-09-01T18:00:03Z","title_canon_sha256":"a3e2c620db57271ae6c06ded4c071c890e9746e2e78fa59c52ae7e82566776e3"},"schema_version":"1.0","source":{"id":"1709.00418","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1709.00418","created_at":"2026-05-18T00:31:11Z"},{"alias_kind":"arxiv_version","alias_value":"1709.00418v1","created_at":"2026-05-18T00:31:11Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1709.00418","created_at":"2026-05-18T00:31:11Z"},{"alias_kind":"pith_short_12","alias_value":"UWHVFGMA5TZZ","created_at":"2026-05-18T12:31:49Z"},{"alias_kind":"pith_short_16","alias_value":"UWHVFGMA5TZZG2NV","created_at":"2026-05-18T12:31:49Z"},{"alias_kind":"pith_short_8","alias_value":"UWHVFGMA","created_at":"2026-05-18T12:31:49Z"}],"graph_snapshots":[{"event_id":"sha256:988f81b51f2ff30ae25181cc95736745ef503a75d6453531742ad7149336cb37","target":"graph","created_at":"2026-05-18T00:31:11Z","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":"The presence of an unseen `Planet 9' on the outskirts of the Solar system has been invoked to explain the unexpected clustering of the orbits of several Edgeworth--Kuiper Belt Objects. We use $N$-body simulations to investigate the probability that Planet 9 was a free-floating planet (FFLOP) that was captured by the Sun in its birth star-formation environment. We find that only 1 - 6 per cent of FFLOPs are ensnared by stars, even with the most optimal initial conditions for capture in star-forming regions (one FFLOP per star, and highly correlated stellar velocities to facilitate capture). Dep","authors_text":"2. Geophysics, 3), 3. Astrophysics, ETH Zurich, Richard J. Parker (1), Sascha P. Quanz (3) (1. University of Sheffield, Switzerland, Switzerland), Tim Lichtenberg (2, UK","cross_cats":["astro-ph.GA","astro-ph.SR","physics.geo-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2017-09-01T18:00:03Z","title":"Was Planet 9 captured in the Sun's natal star-forming region?"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1709.00418","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":"sha256:5afbd02e3ebc9dda9a87fb99699206dc115d873ed3dd6993fa42e672930ad506","target":"record","created_at":"2026-05-18T00:31:11Z","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":"3ea6ffec9ddb6904eb24065bbd73a704161c7301c5fca775364633a841020122","cross_cats_sorted":["astro-ph.GA","astro-ph.SR","physics.geo-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2017-09-01T18:00:03Z","title_canon_sha256":"a3e2c620db57271ae6c06ded4c071c890e9746e2e78fa59c52ae7e82566776e3"},"schema_version":"1.0","source":{"id":"1709.00418","kind":"arxiv","version":1}},"canonical_sha256":"a58f529980ecf39369b5465593fa6ab7effb94d475e28f319888279124712310","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"a58f529980ecf39369b5465593fa6ab7effb94d475e28f319888279124712310","first_computed_at":"2026-05-18T00:31:11.770112Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:31:11.770112Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"r2s+sAse2XMn+mZqAhF6XFeI3st5Lw+DmtZWBc8lMHHBLmyhmqkD/C4bBYr3wuuvQDMj1NHj3aZmDnpyK44uAw==","signature_status":"signed_v1","signed_at":"2026-05-18T00:31:11.770859Z","signed_message":"canonical_sha256_bytes"},"source_id":"1709.00418","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:5afbd02e3ebc9dda9a87fb99699206dc115d873ed3dd6993fa42e672930ad506","sha256:988f81b51f2ff30ae25181cc95736745ef503a75d6453531742ad7149336cb37"],"state_sha256":"59f9a621bdb5c5659f6b0ecbd6f1c2f344b2fa97cbc76c5080000d74e0691448"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"oybVwWl/+8tPh9Y0m2zOFUF3zEBPGoEMSc3/ayLKcD93kGTPI6RqdS5tG5zv6ohVj0jXIT01y5dt1ImMYZ31BA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-01T16:37:50.995538Z","bundle_sha256":"0a7f21cf9d162150d42d7e04c622d417c155853a3dfefbf7c8bbc7e148fdbf0c"}}