{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2006:DS7FOQGKABU7D7M7WPMYKQABOH","short_pith_number":"pith:DS7FOQGK","canonical_record":{"source":{"id":"astro-ph/0603233","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2006-03-09T13:43:44Z","cross_cats_sorted":[],"title_canon_sha256":"f93a72b17f180c3ec9dc0df1af3a112a77fb0c931bbced3fd3ce65bdc4c739e7","abstract_canon_sha256":"083b55969806e09100b502afe16e2b95636e6ee8aa011955cdac5b9145fe3516"},"schema_version":"1.0"},"canonical_sha256":"1cbe5740ca0069f1fd9fb3d985400171d137074134ac83fff8a6b29ea11918fa","source":{"kind":"arxiv","id":"astro-ph/0603233","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/0603233","created_at":"2026-07-04T14:53:05Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0603233v1","created_at":"2026-07-04T14:53:05Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0603233","created_at":"2026-07-04T14:53:05Z"},{"alias_kind":"pith_short_12","alias_value":"DS7FOQGKABU7","created_at":"2026-07-04T14:53:05Z"},{"alias_kind":"pith_short_16","alias_value":"DS7FOQGKABU7D7M7","created_at":"2026-07-04T14:53:05Z"},{"alias_kind":"pith_short_8","alias_value":"DS7FOQGK","created_at":"2026-07-04T14:53:05Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2006:DS7FOQGKABU7D7M7WPMYKQABOH","target":"record","payload":{"canonical_record":{"source":{"id":"astro-ph/0603233","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2006-03-09T13:43:44Z","cross_cats_sorted":[],"title_canon_sha256":"f93a72b17f180c3ec9dc0df1af3a112a77fb0c931bbced3fd3ce65bdc4c739e7","abstract_canon_sha256":"083b55969806e09100b502afe16e2b95636e6ee8aa011955cdac5b9145fe3516"},"schema_version":"1.0"},"canonical_sha256":"1cbe5740ca0069f1fd9fb3d985400171d137074134ac83fff8a6b29ea11918fa","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-04T14:53:05.920154Z","signature_b64":"l0NwXQktjh6SKa4qRicGKyOCEoRYhrNtF+u1MYe0uAFvfdXXRUQDJ0sejpd9qLNv/KUbNWxR961wl/4Eq+3dAg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"1cbe5740ca0069f1fd9fb3d985400171d137074134ac83fff8a6b29ea11918fa","last_reissued_at":"2026-07-04T14:53:05.919766Z","signature_status":"signed_v1","first_computed_at":"2026-07-04T14:53:05.919766Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"astro-ph/0603233","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":"2026-07-04T14:53:05Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"lMB82tMtWyuigySnrcs4aoAzov81WM25xfG6ug3H86YPnhkNG1CWDRJNwpFXvC5jjKXZ1zml0ZjlJe2YjJiFAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-12T03:31:23.014918Z"},"content_sha256":"88716b151bd11051fd6d7160c02bff4eb59edecf6cb641f8e0aabed82f01f88b","schema_version":"1.0","event_id":"sha256:88716b151bd11051fd6d7160c02bff4eb59edecf6cb641f8e0aabed82f01f88b"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2006:DS7FOQGKABU7D7M7WPMYKQABOH","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The Fragmentation of Cores and the Initial Binary Population","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"A. Goodman (3) & A. Burkert (4) (1. Sheffield; 2. Bonn; 3. CfA; 4. Munich), P. Kroupa (2), S. P. Goodwin (1)","submitted_at":"2006-03-09T13:43:44Z","abstract_excerpt":"Almost all young stars are found in multiple systems. This suggests that protostellar cores almost always fragment into multiple objects. The observed properties of multiple systems such as their separation distribution and mass ratios provide strong constraints on star formation theories. We review the observed properties of young and old multiple systems and find that the multiplicity of stars changes. Such an evolution is probably due to (a) the dynamical decay of small-N systems and/or (b) the destruction of multiple systems within dense clusters. We review simulations of the fragmentation"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0603233","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/astro-ph/0603233/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":"2026-07-04T14:53:05Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"MIsaCFJwFpF2BAPlrfAgKY12v8mIdRPFz3KGPfkpuQhOCvrtwNyBcpPOrdOBiPOrS+SS0buNzXgszqpGKUVUAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-12T03:31:23.015334Z"},"content_sha256":"ee2c7974c9bc44787023199d7aa375aba389ef044cb97405236ae2f2bf089c7a","schema_version":"1.0","event_id":"sha256:ee2c7974c9bc44787023199d7aa375aba389ef044cb97405236ae2f2bf089c7a"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/DS7FOQGKABU7D7M7WPMYKQABOH/bundle.json","state_url":"https://pith.science/pith/DS7FOQGKABU7D7M7WPMYKQABOH/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/DS7FOQGKABU7D7M7WPMYKQABOH/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":"2026-08-12T03:31:23Z","links":{"resolver":"https://pith.science/pith/DS7FOQGKABU7D7M7WPMYKQABOH","bundle":"https://pith.science/pith/DS7FOQGKABU7D7M7WPMYKQABOH/bundle.json","state":"https://pith.science/pith/DS7FOQGKABU7D7M7WPMYKQABOH/state.json","well_known_bundle":"https://pith.science/.well-known/pith/DS7FOQGKABU7D7M7WPMYKQABOH/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2006:DS7FOQGKABU7D7M7WPMYKQABOH","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":"083b55969806e09100b502afe16e2b95636e6ee8aa011955cdac5b9145fe3516","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2006-03-09T13:43:44Z","title_canon_sha256":"f93a72b17f180c3ec9dc0df1af3a112a77fb0c931bbced3fd3ce65bdc4c739e7"},"schema_version":"1.0","source":{"id":"astro-ph/0603233","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/0603233","created_at":"2026-07-04T14:53:05Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0603233v1","created_at":"2026-07-04T14:53:05Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0603233","created_at":"2026-07-04T14:53:05Z"},{"alias_kind":"pith_short_12","alias_value":"DS7FOQGKABU7","created_at":"2026-07-04T14:53:05Z"},{"alias_kind":"pith_short_16","alias_value":"DS7FOQGKABU7D7M7","created_at":"2026-07-04T14:53:05Z"},{"alias_kind":"pith_short_8","alias_value":"DS7FOQGK","created_at":"2026-07-04T14:53:05Z"}],"graph_snapshots":[{"event_id":"sha256:ee2c7974c9bc44787023199d7aa375aba389ef044cb97405236ae2f2bf089c7a","target":"graph","created_at":"2026-07-04T14:53:05Z","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/astro-ph/0603233/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Almost all young stars are found in multiple systems. This suggests that protostellar cores almost always fragment into multiple objects. The observed properties of multiple systems such as their separation distribution and mass ratios provide strong constraints on star formation theories. We review the observed properties of young and old multiple systems and find that the multiplicity of stars changes. Such an evolution is probably due to (a) the dynamical decay of small-N systems and/or (b) the destruction of multiple systems within dense clusters. We review simulations of the fragmentation","authors_text":"A. Goodman (3) & A. Burkert (4) (1. Sheffield; 2. Bonn; 3. CfA; 4. Munich), P. Kroupa (2), S. P. Goodwin (1)","cross_cats":[],"headline":"","license":"","primary_cat":"astro-ph","submitted_at":"2006-03-09T13:43:44Z","title":"The Fragmentation of Cores and the Initial Binary Population"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0603233","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":"sha256:88716b151bd11051fd6d7160c02bff4eb59edecf6cb641f8e0aabed82f01f88b","target":"record","created_at":"2026-07-04T14:53:05Z","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":"083b55969806e09100b502afe16e2b95636e6ee8aa011955cdac5b9145fe3516","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2006-03-09T13:43:44Z","title_canon_sha256":"f93a72b17f180c3ec9dc0df1af3a112a77fb0c931bbced3fd3ce65bdc4c739e7"},"schema_version":"1.0","source":{"id":"astro-ph/0603233","kind":"arxiv","version":1}},"canonical_sha256":"1cbe5740ca0069f1fd9fb3d985400171d137074134ac83fff8a6b29ea11918fa","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"1cbe5740ca0069f1fd9fb3d985400171d137074134ac83fff8a6b29ea11918fa","first_computed_at":"2026-07-04T14:53:05.919766Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T14:53:05.919766Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"l0NwXQktjh6SKa4qRicGKyOCEoRYhrNtF+u1MYe0uAFvfdXXRUQDJ0sejpd9qLNv/KUbNWxR961wl/4Eq+3dAg==","signature_status":"signed_v1","signed_at":"2026-07-04T14:53:05.920154Z","signed_message":"canonical_sha256_bytes"},"source_id":"astro-ph/0603233","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:88716b151bd11051fd6d7160c02bff4eb59edecf6cb641f8e0aabed82f01f88b","sha256:ee2c7974c9bc44787023199d7aa375aba389ef044cb97405236ae2f2bf089c7a"],"state_sha256":"46ccef108197893e815ab857177e4021502dfa3f8943f66d4479705dfb7acb43"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"qfdSyKSjHA0D3NMTDdK80k8P0ktz4IvTWdPdrEuIuk+uHeJsu4ZXa7naf0JseM2sEwBpPnwo2m3AOoBIskHRAQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-12T03:31:23.040991Z","bundle_sha256":"68ce979a473965e13e582064c8e3b6b8077bac223231788143ea3fb0f0f449de"}}