{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2017:Y6ZVLZ7QUKQSFS3XWJY4B4YPF2","short_pith_number":"pith:Y6ZVLZ7Q","canonical_record":{"source":{"id":"1704.03341","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2017-04-11T15:04:08Z","cross_cats_sorted":[],"title_canon_sha256":"a0606ad4acf7dcf664c8e8e3340952b87c096c10990dac5930b9f88c54bc1010","abstract_canon_sha256":"cffa07c2c61a16e13d70d4876e8ea2a06a3a22c928273338d343ab73377de369"},"schema_version":"1.0"},"canonical_sha256":"c7b355e7f0a2a122cb77b271c0f30f2eabd0e5712a0a41b5a4f584c3bc5181e4","source":{"kind":"arxiv","id":"1704.03341","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1704.03341","created_at":"2026-05-18T00:40:06Z"},{"alias_kind":"arxiv_version","alias_value":"1704.03341v1","created_at":"2026-05-18T00:40:06Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1704.03341","created_at":"2026-05-18T00:40:06Z"},{"alias_kind":"pith_short_12","alias_value":"Y6ZVLZ7QUKQS","created_at":"2026-05-18T12:31:56Z"},{"alias_kind":"pith_short_16","alias_value":"Y6ZVLZ7QUKQSFS3X","created_at":"2026-05-18T12:31:56Z"},{"alias_kind":"pith_short_8","alias_value":"Y6ZVLZ7Q","created_at":"2026-05-18T12:31:56Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2017:Y6ZVLZ7QUKQSFS3XWJY4B4YPF2","target":"record","payload":{"canonical_record":{"source":{"id":"1704.03341","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2017-04-11T15:04:08Z","cross_cats_sorted":[],"title_canon_sha256":"a0606ad4acf7dcf664c8e8e3340952b87c096c10990dac5930b9f88c54bc1010","abstract_canon_sha256":"cffa07c2c61a16e13d70d4876e8ea2a06a3a22c928273338d343ab73377de369"},"schema_version":"1.0"},"canonical_sha256":"c7b355e7f0a2a122cb77b271c0f30f2eabd0e5712a0a41b5a4f584c3bc5181e4","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:40:06.324287Z","signature_b64":"2C+DwaA+r9GkPqC8cf7ITYJQfxr6ghNwVYZLUw2FjgJ8K71OfRgrPuZlaK6Crxr5mvQIEuQG9j8aMnKzRQsdAw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"c7b355e7f0a2a122cb77b271c0f30f2eabd0e5712a0a41b5a4f584c3bc5181e4","last_reissued_at":"2026-05-18T00:40:06.323701Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:40:06.323701Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1704.03341","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":"2026-05-18T00:40:06Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"8n0bvQ1lHPYOX0tOB0NEK1Nz7lenjj7xbXuxu62Vt6Ofiv0Kk68/hZ7QuchVbTCXSKFvikrcO94g1kTvvqTTCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T02:25:55.393234Z"},"content_sha256":"5ec2d2fbc7a402f70dee5df95a26e380151bcfe9028274eb526a47804f196cea","schema_version":"1.0","event_id":"sha256:5ec2d2fbc7a402f70dee5df95a26e380151bcfe9028274eb526a47804f196cea"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2017:Y6ZVLZ7QUKQSFS3XWJY4B4YPF2","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The Destruction of an Oort Cloud in a rich stellar cluster","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.EP","authors_text":"Bengt Gustafsson, Hans Rickman, Thomas Nordlander","submitted_at":"2017-04-11T15:04:08Z","abstract_excerpt":"It is possible that the formation of the Oort Cloud dates back to the earliest epochs of solar system history. At that time, the Sun was almost certainly a member of the stellar cluster, where it was born. Since the solar birth cluster is likely to have been massive (1000--10 000 Msol), and therefore long-lived, an issue concerns the survival of such a primordial Oort Cloud. We have investigated this issue by simulating the orbital evolution of Oort Cloud comets for several hundred Myr, assuming the Sun to start its life as a typical member of such a massive cluster. We have devised a syntheti"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1704.03341","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":"2026-05-18T00:40:06Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"V5J+XGzEMZ35O4Cz9qP7gktEW47k2NQDNg+MIPJJFpYotkStssdfR14vHxofsA5fOj1nlQ3VymDZNUMVYMCWBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T02:25:55.393968Z"},"content_sha256":"93956bd3b21279b574d6246df5114d1aaa5eec97a0df9f54a36345a5c061b530","schema_version":"1.0","event_id":"sha256:93956bd3b21279b574d6246df5114d1aaa5eec97a0df9f54a36345a5c061b530"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/Y6ZVLZ7QUKQSFS3XWJY4B4YPF2/bundle.json","state_url":"https://pith.science/pith/Y6ZVLZ7QUKQSFS3XWJY4B4YPF2/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/Y6ZVLZ7QUKQSFS3XWJY4B4YPF2/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":"2026-05-26T02:25:55Z","links":{"resolver":"https://pith.science/pith/Y6ZVLZ7QUKQSFS3XWJY4B4YPF2","bundle":"https://pith.science/pith/Y6ZVLZ7QUKQSFS3XWJY4B4YPF2/bundle.json","state":"https://pith.science/pith/Y6ZVLZ7QUKQSFS3XWJY4B4YPF2/state.json","well_known_bundle":"https://pith.science/.well-known/pith/Y6ZVLZ7QUKQSFS3XWJY4B4YPF2/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:Y6ZVLZ7QUKQSFS3XWJY4B4YPF2","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":"cffa07c2c61a16e13d70d4876e8ea2a06a3a22c928273338d343ab73377de369","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2017-04-11T15:04:08Z","title_canon_sha256":"a0606ad4acf7dcf664c8e8e3340952b87c096c10990dac5930b9f88c54bc1010"},"schema_version":"1.0","source":{"id":"1704.03341","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1704.03341","created_at":"2026-05-18T00:40:06Z"},{"alias_kind":"arxiv_version","alias_value":"1704.03341v1","created_at":"2026-05-18T00:40:06Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1704.03341","created_at":"2026-05-18T00:40:06Z"},{"alias_kind":"pith_short_12","alias_value":"Y6ZVLZ7QUKQS","created_at":"2026-05-18T12:31:56Z"},{"alias_kind":"pith_short_16","alias_value":"Y6ZVLZ7QUKQSFS3X","created_at":"2026-05-18T12:31:56Z"},{"alias_kind":"pith_short_8","alias_value":"Y6ZVLZ7Q","created_at":"2026-05-18T12:31:56Z"}],"graph_snapshots":[{"event_id":"sha256:93956bd3b21279b574d6246df5114d1aaa5eec97a0df9f54a36345a5c061b530","target":"graph","created_at":"2026-05-18T00:40:06Z","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":"It is possible that the formation of the Oort Cloud dates back to the earliest epochs of solar system history. At that time, the Sun was almost certainly a member of the stellar cluster, where it was born. Since the solar birth cluster is likely to have been massive (1000--10 000 Msol), and therefore long-lived, an issue concerns the survival of such a primordial Oort Cloud. We have investigated this issue by simulating the orbital evolution of Oort Cloud comets for several hundred Myr, assuming the Sun to start its life as a typical member of such a massive cluster. We have devised a syntheti","authors_text":"Bengt Gustafsson, Hans Rickman, Thomas Nordlander","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2017-04-11T15:04:08Z","title":"The Destruction of an Oort Cloud in a rich stellar cluster"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1704.03341","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":"sha256:5ec2d2fbc7a402f70dee5df95a26e380151bcfe9028274eb526a47804f196cea","target":"record","created_at":"2026-05-18T00:40:06Z","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":"cffa07c2c61a16e13d70d4876e8ea2a06a3a22c928273338d343ab73377de369","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2017-04-11T15:04:08Z","title_canon_sha256":"a0606ad4acf7dcf664c8e8e3340952b87c096c10990dac5930b9f88c54bc1010"},"schema_version":"1.0","source":{"id":"1704.03341","kind":"arxiv","version":1}},"canonical_sha256":"c7b355e7f0a2a122cb77b271c0f30f2eabd0e5712a0a41b5a4f584c3bc5181e4","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"c7b355e7f0a2a122cb77b271c0f30f2eabd0e5712a0a41b5a4f584c3bc5181e4","first_computed_at":"2026-05-18T00:40:06.323701Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:40:06.323701Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"2C+DwaA+r9GkPqC8cf7ITYJQfxr6ghNwVYZLUw2FjgJ8K71OfRgrPuZlaK6Crxr5mvQIEuQG9j8aMnKzRQsdAw==","signature_status":"signed_v1","signed_at":"2026-05-18T00:40:06.324287Z","signed_message":"canonical_sha256_bytes"},"source_id":"1704.03341","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:5ec2d2fbc7a402f70dee5df95a26e380151bcfe9028274eb526a47804f196cea","sha256:93956bd3b21279b574d6246df5114d1aaa5eec97a0df9f54a36345a5c061b530"],"state_sha256":"0247f4c118f7075f39bab52d084269ff6a0a9b9023abe4ed306b08e6c80c6b44"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"p+E9b93mAQXsRFNrqKVIe3nKpSLDyxiEJyfpu8JNvUytkzdLFn/aL0SUZIJ3crS3tKjiImMeI3IIr4aBa8DfBA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-26T02:25:55.397496Z","bundle_sha256":"eda2d27d98d2a0c4b3e9e7d0de864b490b285ddc22fcf7348a5777ff5f82ceb0"}}