{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2001:FQTQSKZS6RYN2QMBMLTWFVPVCA","short_pith_number":"pith:FQTQSKZS","canonical_record":{"source":{"id":"astro-ph/0107090","kind":"arxiv","version":2},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2001-07-05T09:54:05Z","cross_cats_sorted":[],"title_canon_sha256":"bc792ead6cd0339a9b70a4d4b70f759abe1dbaa7f86b83c64cbaca824a40156d","abstract_canon_sha256":"21df1809585a88f0e49989e4a94fbd303a7211849bd9fc80b6ffdf2c65957ac2"},"schema_version":"1.0"},"canonical_sha256":"2c27092b32f470dd418162e762d5f5103302cbb42b3d18190bbfc9a151431639","source":{"kind":"arxiv","id":"astro-ph/0107090","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/0107090","created_at":"2026-05-18T04:27:05Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0107090v2","created_at":"2026-05-18T04:27:05Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0107090","created_at":"2026-05-18T04:27:05Z"},{"alias_kind":"pith_short_12","alias_value":"FQTQSKZS6RYN","created_at":"2026-05-18T12:25:50Z"},{"alias_kind":"pith_short_16","alias_value":"FQTQSKZS6RYN2QMB","created_at":"2026-05-18T12:25:50Z"},{"alias_kind":"pith_short_8","alias_value":"FQTQSKZS","created_at":"2026-05-18T12:25:50Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2001:FQTQSKZS6RYN2QMBMLTWFVPVCA","target":"record","payload":{"canonical_record":{"source":{"id":"astro-ph/0107090","kind":"arxiv","version":2},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2001-07-05T09:54:05Z","cross_cats_sorted":[],"title_canon_sha256":"bc792ead6cd0339a9b70a4d4b70f759abe1dbaa7f86b83c64cbaca824a40156d","abstract_canon_sha256":"21df1809585a88f0e49989e4a94fbd303a7211849bd9fc80b6ffdf2c65957ac2"},"schema_version":"1.0"},"canonical_sha256":"2c27092b32f470dd418162e762d5f5103302cbb42b3d18190bbfc9a151431639","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T04:27:05.441692Z","signature_b64":"StC/X67NNs+rLf+mh8YOcwb7n+c8DNJyiCPCNCFzy5XmLfB5XGOICtI79XtFgkpHYAQKStKPwEMX38+53fx5BQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"2c27092b32f470dd418162e762d5f5103302cbb42b3d18190bbfc9a151431639","last_reissued_at":"2026-05-18T04:27:05.441017Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T04:27:05.441017Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"astro-ph/0107090","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":"2026-05-18T04:27:05Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"xbQqOYO84afNO8udrL1C8BneSoOEfQeVWbMpNi1AJIpV96gz3vTcC1pVMObG8jw0e2dmL8fI/k5bAci6nv2QAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-21T17:33:24.279010Z"},"content_sha256":"f3a62ccd2a3f274d927c27e920065bbc471d4391d1fa72839b5b6936bc6a18da","schema_version":"1.0","event_id":"sha256:f3a62ccd2a3f274d927c27e920065bbc471d4391d1fa72839b5b6936bc6a18da"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2001:FQTQSKZS6RYN2QMBMLTWFVPVCA","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"A giant stream of metal-rich stars in the halo of the galaxy M31","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"Annette Ferguson, Geraint Lewis, Michael Irwin, Nial Tanvir, Rodrigo Ibata","submitted_at":"2001-07-05T09:54:05Z","abstract_excerpt":"Recent observations have revealed streams of gas and stars in the halo of the Milky Way that are the debris from interactions between our Galaxy and some of its dwarf companion galaxies; the Sagittarius dwarf galaxy and the Magellanic clouds. Analysis of the material has shown that much of the halo is made up of cannibalized satellite galaxies, and that dark matter is distributed nearly spherically in the Milky Way. It remains unclear, however, whether cannibalized substructures are as common in the haloes of galaxies as predicted by galaxy-formation theory. Here we report the discovery of a g"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0107090","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":""},"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":"2026-05-18T04:27:05Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"L2OX88aR9qDOEUfHy1iEmmw+1IzYbyYrwWvjpX0fRPGRHOixGZEJPu9Uvl9mebFcGQ/vEHBSEG6gZXT0hv2tCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-21T17:33:24.279364Z"},"content_sha256":"388df03b8cd0d6356782c9b28f768df6fd3b6603dd34c0bed517bcdc4dbc06bc","schema_version":"1.0","event_id":"sha256:388df03b8cd0d6356782c9b28f768df6fd3b6603dd34c0bed517bcdc4dbc06bc"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/FQTQSKZS6RYN2QMBMLTWFVPVCA/bundle.json","state_url":"https://pith.science/pith/FQTQSKZS6RYN2QMBMLTWFVPVCA/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/FQTQSKZS6RYN2QMBMLTWFVPVCA/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":"2026-05-21T17:33:24Z","links":{"resolver":"https://pith.science/pith/FQTQSKZS6RYN2QMBMLTWFVPVCA","bundle":"https://pith.science/pith/FQTQSKZS6RYN2QMBMLTWFVPVCA/bundle.json","state":"https://pith.science/pith/FQTQSKZS6RYN2QMBMLTWFVPVCA/state.json","well_known_bundle":"https://pith.science/.well-known/pith/FQTQSKZS6RYN2QMBMLTWFVPVCA/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2001:FQTQSKZS6RYN2QMBMLTWFVPVCA","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":"21df1809585a88f0e49989e4a94fbd303a7211849bd9fc80b6ffdf2c65957ac2","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2001-07-05T09:54:05Z","title_canon_sha256":"bc792ead6cd0339a9b70a4d4b70f759abe1dbaa7f86b83c64cbaca824a40156d"},"schema_version":"1.0","source":{"id":"astro-ph/0107090","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/0107090","created_at":"2026-05-18T04:27:05Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0107090v2","created_at":"2026-05-18T04:27:05Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0107090","created_at":"2026-05-18T04:27:05Z"},{"alias_kind":"pith_short_12","alias_value":"FQTQSKZS6RYN","created_at":"2026-05-18T12:25:50Z"},{"alias_kind":"pith_short_16","alias_value":"FQTQSKZS6RYN2QMB","created_at":"2026-05-18T12:25:50Z"},{"alias_kind":"pith_short_8","alias_value":"FQTQSKZS","created_at":"2026-05-18T12:25:50Z"}],"graph_snapshots":[{"event_id":"sha256:388df03b8cd0d6356782c9b28f768df6fd3b6603dd34c0bed517bcdc4dbc06bc","target":"graph","created_at":"2026-05-18T04:27:05Z","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"},"paper":{"abstract_excerpt":"Recent observations have revealed streams of gas and stars in the halo of the Milky Way that are the debris from interactions between our Galaxy and some of its dwarf companion galaxies; the Sagittarius dwarf galaxy and the Magellanic clouds. Analysis of the material has shown that much of the halo is made up of cannibalized satellite galaxies, and that dark matter is distributed nearly spherically in the Milky Way. It remains unclear, however, whether cannibalized substructures are as common in the haloes of galaxies as predicted by galaxy-formation theory. Here we report the discovery of a g","authors_text":"Annette Ferguson, Geraint Lewis, Michael Irwin, Nial Tanvir, Rodrigo Ibata","cross_cats":[],"headline":"","license":"","primary_cat":"astro-ph","submitted_at":"2001-07-05T09:54:05Z","title":"A giant stream of metal-rich stars in the halo of the galaxy M31"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0107090","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:f3a62ccd2a3f274d927c27e920065bbc471d4391d1fa72839b5b6936bc6a18da","target":"record","created_at":"2026-05-18T04:27:05Z","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":"21df1809585a88f0e49989e4a94fbd303a7211849bd9fc80b6ffdf2c65957ac2","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2001-07-05T09:54:05Z","title_canon_sha256":"bc792ead6cd0339a9b70a4d4b70f759abe1dbaa7f86b83c64cbaca824a40156d"},"schema_version":"1.0","source":{"id":"astro-ph/0107090","kind":"arxiv","version":2}},"canonical_sha256":"2c27092b32f470dd418162e762d5f5103302cbb42b3d18190bbfc9a151431639","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"2c27092b32f470dd418162e762d5f5103302cbb42b3d18190bbfc9a151431639","first_computed_at":"2026-05-18T04:27:05.441017Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T04:27:05.441017Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"StC/X67NNs+rLf+mh8YOcwb7n+c8DNJyiCPCNCFzy5XmLfB5XGOICtI79XtFgkpHYAQKStKPwEMX38+53fx5BQ==","signature_status":"signed_v1","signed_at":"2026-05-18T04:27:05.441692Z","signed_message":"canonical_sha256_bytes"},"source_id":"astro-ph/0107090","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:f3a62ccd2a3f274d927c27e920065bbc471d4391d1fa72839b5b6936bc6a18da","sha256:388df03b8cd0d6356782c9b28f768df6fd3b6603dd34c0bed517bcdc4dbc06bc"],"state_sha256":"eebfba0cea017f56f0300e6e593b22a4d38e785cb1fd936cb191239e6b8f8753"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"5mXUlAbusi1nCbq7IYjB+oCrUIDmMOd7d3OvTbCjd1y/HZoUwEBSwbLN6o2M1i6tboSztogVFJQoky8yts/1Bg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-21T17:33:24.282108Z","bundle_sha256":"850a33ab112ca3b7120aefe138f9a3de51215b648b44b4b96087cb487d59a156"}}