{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2007:VPX445UTHFGOGJEG7B4BSNEHFS","short_pith_number":"pith:VPX445UT","canonical_record":{"source":{"id":"0706.3005","kind":"arxiv","version":3},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2007-06-20T14:39:53Z","cross_cats_sorted":[],"title_canon_sha256":"94428fffc3124e69f2e990223ab98bb3cd0e2880a30d895feeaed581008f4e60","abstract_canon_sha256":"338a68b188025e3c0b7f84a62543b727b349b5f70648426ef1ae02ae3d2aa917"},"schema_version":"1.0"},"canonical_sha256":"abefce7693394ce32486f8781934872cbeb5c4adc70e9eb09954ddafa1530c27","source":{"kind":"arxiv","id":"0706.3005","version":3},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0706.3005","created_at":"2026-07-04T15:31:15Z"},{"alias_kind":"arxiv_version","alias_value":"0706.3005v3","created_at":"2026-07-04T15:31:15Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0706.3005","created_at":"2026-07-04T15:31:15Z"},{"alias_kind":"pith_short_12","alias_value":"VPX445UTHFGO","created_at":"2026-07-04T15:31:15Z"},{"alias_kind":"pith_short_16","alias_value":"VPX445UTHFGOGJEG","created_at":"2026-07-04T15:31:15Z"},{"alias_kind":"pith_short_8","alias_value":"VPX445UT","created_at":"2026-07-04T15:31:15Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2007:VPX445UTHFGOGJEG7B4BSNEHFS","target":"record","payload":{"canonical_record":{"source":{"id":"0706.3005","kind":"arxiv","version":3},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2007-06-20T14:39:53Z","cross_cats_sorted":[],"title_canon_sha256":"94428fffc3124e69f2e990223ab98bb3cd0e2880a30d895feeaed581008f4e60","abstract_canon_sha256":"338a68b188025e3c0b7f84a62543b727b349b5f70648426ef1ae02ae3d2aa917"},"schema_version":"1.0"},"canonical_sha256":"abefce7693394ce32486f8781934872cbeb5c4adc70e9eb09954ddafa1530c27","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-04T15:31:15.958232Z","signature_b64":"6zDYCAwU+2n+Wrgy6dcz2WHZyP5tekJWa6lncr30QxlBgwTnnI/MWX8Rc3adVzvOybbem2mRzenFE+Tszc56DA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"abefce7693394ce32486f8781934872cbeb5c4adc70e9eb09954ddafa1530c27","last_reissued_at":"2026-07-04T15:31:15.957791Z","signature_status":"signed_v1","first_computed_at":"2026-07-04T15:31:15.957791Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"0706.3005","source_version":3,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-04T15:31:15Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"d75Szw13TcxBaibk7OjtoLlLnmkBAwdJzRcunhsWkNh1Gc3cPrZ19sTCInS7nlDYM/zECo7LcAbkFn+UwTwECw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-04T11:39:00.123377Z"},"content_sha256":"aded53634d84d53044e4eaf5d9970fc83adc59e8f6ac9e15109ff3f9afb80143","schema_version":"1.0","event_id":"sha256:aded53634d84d53044e4eaf5d9970fc83adc59e8f6ac9e15109ff3f9afb80143"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2007:VPX445UTHFGOGJEG7B4BSNEHFS","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Two Stellar Components in the Halo of the Milky Way","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"2, (2) Michigan State Univ., (3) Univ. of Tohoku, 4), (4) Australian National Univ., (5) Texas Tech Univ., (6) USNO, (7) MPIA, (8) Univ. of Chicago), B. Marsteller (2), C.A.L. Bailer-Jones (7), D. Carollo (1, D.G. York (8) ((1) Osservatorio Astronomico di Torino, Flagstaff, Germany, Heidelberg, Italy, J.A. Munn (6), Japan, J.E. Norris (4), JINA, M. Chiba (3), P. Re Fiorentin (7), R. Wilhelm (5), T.C. Beers (2), T. Sivarani (2), Y. S. Lee (2)","submitted_at":"2007-06-20T14:39:53Z","abstract_excerpt":"The halo of the Milky Way provides unique elemental abundance and kinematic information on the first objects to form in the Universe, which can be used to tightly constrain models of galaxy formation and evolution. Although the halo was once considered a single component, evidence for its dichotomy has slowly emerged in recent years from inspection of small samples of halo objects. Here we show that the halo is indeed clearly divisible into two broadly overlapping structural components -- an inner and an outer halo -- that exhibit different spatial density profiles, stellar orbits and stellar "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0706.3005","kind":"arxiv","version":3},"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/0706.3005/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":"2026-07-04T15:31:15Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"TSoYkM8rSqmALNeBAOe9HvzyPKU72LQx1i3O6bM4eEuy7DBsM8GPz1rqjq3ExcDmCqqLahfUCvHWoMftbVjaDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-04T11:39:00.124395Z"},"content_sha256":"728ac2ff1e8decd6f531fb38cc2982f1c1147545424a2331c42372cccafb6742","schema_version":"1.0","event_id":"sha256:728ac2ff1e8decd6f531fb38cc2982f1c1147545424a2331c42372cccafb6742"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/VPX445UTHFGOGJEG7B4BSNEHFS/bundle.json","state_url":"https://pith.science/pith/VPX445UTHFGOGJEG7B4BSNEHFS/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/VPX445UTHFGOGJEG7B4BSNEHFS/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":"2026-08-04T11:39:00Z","links":{"resolver":"https://pith.science/pith/VPX445UTHFGOGJEG7B4BSNEHFS","bundle":"https://pith.science/pith/VPX445UTHFGOGJEG7B4BSNEHFS/bundle.json","state":"https://pith.science/pith/VPX445UTHFGOGJEG7B4BSNEHFS/state.json","well_known_bundle":"https://pith.science/.well-known/pith/VPX445UTHFGOGJEG7B4BSNEHFS/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2007:VPX445UTHFGOGJEG7B4BSNEHFS","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":"338a68b188025e3c0b7f84a62543b727b349b5f70648426ef1ae02ae3d2aa917","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2007-06-20T14:39:53Z","title_canon_sha256":"94428fffc3124e69f2e990223ab98bb3cd0e2880a30d895feeaed581008f4e60"},"schema_version":"1.0","source":{"id":"0706.3005","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0706.3005","created_at":"2026-07-04T15:31:15Z"},{"alias_kind":"arxiv_version","alias_value":"0706.3005v3","created_at":"2026-07-04T15:31:15Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0706.3005","created_at":"2026-07-04T15:31:15Z"},{"alias_kind":"pith_short_12","alias_value":"VPX445UTHFGO","created_at":"2026-07-04T15:31:15Z"},{"alias_kind":"pith_short_16","alias_value":"VPX445UTHFGOGJEG","created_at":"2026-07-04T15:31:15Z"},{"alias_kind":"pith_short_8","alias_value":"VPX445UT","created_at":"2026-07-04T15:31:15Z"}],"graph_snapshots":[{"event_id":"sha256:728ac2ff1e8decd6f531fb38cc2982f1c1147545424a2331c42372cccafb6742","target":"graph","created_at":"2026-07-04T15:31:15Z","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/0706.3005/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"The halo of the Milky Way provides unique elemental abundance and kinematic information on the first objects to form in the Universe, which can be used to tightly constrain models of galaxy formation and evolution. Although the halo was once considered a single component, evidence for its dichotomy has slowly emerged in recent years from inspection of small samples of halo objects. Here we show that the halo is indeed clearly divisible into two broadly overlapping structural components -- an inner and an outer halo -- that exhibit different spatial density profiles, stellar orbits and stellar ","authors_text":"2, (2) Michigan State Univ., (3) Univ. of Tohoku, 4), (4) Australian National Univ., (5) Texas Tech Univ., (6) USNO, (7) MPIA, (8) Univ. of Chicago), B. Marsteller (2), C.A.L. Bailer-Jones (7), D. Carollo (1, D.G. York (8) ((1) Osservatorio Astronomico di Torino, Flagstaff, Germany, Heidelberg, Italy, J.A. Munn (6), Japan, J.E. Norris (4), JINA, M. Chiba (3), P. Re Fiorentin (7), R. Wilhelm (5), T.C. Beers (2), T. Sivarani (2), Y. S. Lee (2)","cross_cats":[],"headline":"","license":"","primary_cat":"astro-ph","submitted_at":"2007-06-20T14:39:53Z","title":"Two Stellar Components in the Halo of the Milky Way"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0706.3005","kind":"arxiv","version":3},"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:aded53634d84d53044e4eaf5d9970fc83adc59e8f6ac9e15109ff3f9afb80143","target":"record","created_at":"2026-07-04T15:31:15Z","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":"338a68b188025e3c0b7f84a62543b727b349b5f70648426ef1ae02ae3d2aa917","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2007-06-20T14:39:53Z","title_canon_sha256":"94428fffc3124e69f2e990223ab98bb3cd0e2880a30d895feeaed581008f4e60"},"schema_version":"1.0","source":{"id":"0706.3005","kind":"arxiv","version":3}},"canonical_sha256":"abefce7693394ce32486f8781934872cbeb5c4adc70e9eb09954ddafa1530c27","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"abefce7693394ce32486f8781934872cbeb5c4adc70e9eb09954ddafa1530c27","first_computed_at":"2026-07-04T15:31:15.957791Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T15:31:15.957791Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"6zDYCAwU+2n+Wrgy6dcz2WHZyP5tekJWa6lncr30QxlBgwTnnI/MWX8Rc3adVzvOybbem2mRzenFE+Tszc56DA==","signature_status":"signed_v1","signed_at":"2026-07-04T15:31:15.958232Z","signed_message":"canonical_sha256_bytes"},"source_id":"0706.3005","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:aded53634d84d53044e4eaf5d9970fc83adc59e8f6ac9e15109ff3f9afb80143","sha256:728ac2ff1e8decd6f531fb38cc2982f1c1147545424a2331c42372cccafb6742"],"state_sha256":"eec6b63924b0c4bcf76e7f395da20edbe2ea8876e986338c30f46a7b67664825"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"LpEjlnmpvYGBKZhNvKv85ptINgHfPvRix2FAd6TwfRf8b/tU9/FGRV590n8cNXw04QWH4kb/PeXJDbAN5QQLCg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-04T11:39:00.134357Z","bundle_sha256":"b5157b7343149c7e54a65fa1a7306fcf8c2d881b0ee4e6e69922704643146e02"}}