{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2011:4WNFINJJYK3TZCEGA4JZLF6H3U","short_pith_number":"pith:4WNFINJJ","canonical_record":{"source":{"id":"1101.2544","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2011-01-13T12:36:57Z","cross_cats_sorted":[],"title_canon_sha256":"8cdbe39581630158a5ab0603cd69e89e4ecbbb622bf4cbe5e25f6c4888e50e44","abstract_canon_sha256":"ce64c3b39e5afba39f0454504ecd492931789eae1fdd8863639d7da7a5e3605c"},"schema_version":"1.0"},"canonical_sha256":"e59a543529c2b73c888607139597c7dd01c06e190f478db88526a3ea929ee9db","source":{"kind":"arxiv","id":"1101.2544","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1101.2544","created_at":"2026-05-18T02:03:40Z"},{"alias_kind":"arxiv_version","alias_value":"1101.2544v2","created_at":"2026-05-18T02:03:40Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1101.2544","created_at":"2026-05-18T02:03:40Z"},{"alias_kind":"pith_short_12","alias_value":"4WNFINJJYK3T","created_at":"2026-05-18T12:26:20Z"},{"alias_kind":"pith_short_16","alias_value":"4WNFINJJYK3TZCEG","created_at":"2026-05-18T12:26:20Z"},{"alias_kind":"pith_short_8","alias_value":"4WNFINJJ","created_at":"2026-05-18T12:26:20Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2011:4WNFINJJYK3TZCEGA4JZLF6H3U","target":"record","payload":{"canonical_record":{"source":{"id":"1101.2544","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2011-01-13T12:36:57Z","cross_cats_sorted":[],"title_canon_sha256":"8cdbe39581630158a5ab0603cd69e89e4ecbbb622bf4cbe5e25f6c4888e50e44","abstract_canon_sha256":"ce64c3b39e5afba39f0454504ecd492931789eae1fdd8863639d7da7a5e3605c"},"schema_version":"1.0"},"canonical_sha256":"e59a543529c2b73c888607139597c7dd01c06e190f478db88526a3ea929ee9db","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:03:40.491969Z","signature_b64":"IVR3nOr/D+oFezjhAQUkWrMJLkxi5+5FaUL9vM1AfAGJqxYHncZYUwA9wV2xgC7jL2yyS1mEZuPWed81GX0VDw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"e59a543529c2b73c888607139597c7dd01c06e190f478db88526a3ea929ee9db","last_reissued_at":"2026-05-18T02:03:40.491304Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:03:40.491304Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1101.2544","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":"2026-05-18T02:03:40Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Z/djbEubuCEjy8CwSbFhu8qBo2uJ1RRwzQ1BCuB+5nizB4xxNGsE50qrqCM3bLBOXM7SUkJucf1vaoPp2rHgCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T15:05:42.307417Z"},"content_sha256":"36840fef66f5843a39b4627490be771bcb1779095f05ad1347f5ebd235b6a8c1","schema_version":"1.0","event_id":"sha256:36840fef66f5843a39b4627490be771bcb1779095f05ad1347f5ebd235b6a8c1"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2011:4WNFINJJYK3TZCEGA4JZLF6H3U","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Substructure in the stellar halos of the Aquarius simulations","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"Amina Helmi, A. P. Cooper, C. S. Frenk, J. F. Navarro, S. Cole, S. D. M. White","submitted_at":"2011-01-13T12:36:57Z","abstract_excerpt":"We characterize substructure in the simulated stellar halos of Cooper et al. (2010) which were formed by the disruption of satellite galaxies within the cosmological N-body simulations of galactic halos of the Aquarius Project. These stellar halos exhibit a wealth of tidal features: broad overdensities and very narrow faint streams akin to those observed around the Milky Way. The substructures are distributed anisotropically on the sky, a characteristic that should become apparent in the next generation of photometric surveys. The normalized RMS of the density of stars on the sky appears to be"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1101.2544","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":"2026-05-18T02:03:40Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"uCJLpKiYaFqImAQmapzVQKQCgSnarlxo7EUIdHQ5ZGA+W4n1lasT+Mwc7Kc2RjTnL1i5jfQEnCClPkONiXzxAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T15:05:42.308117Z"},"content_sha256":"78ff493490fa03151a0ba2f6cf62f8dfbc965c23eef14242c41b870c308fe386","schema_version":"1.0","event_id":"sha256:78ff493490fa03151a0ba2f6cf62f8dfbc965c23eef14242c41b870c308fe386"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/4WNFINJJYK3TZCEGA4JZLF6H3U/bundle.json","state_url":"https://pith.science/pith/4WNFINJJYK3TZCEGA4JZLF6H3U/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/4WNFINJJYK3TZCEGA4JZLF6H3U/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":"2026-05-25T15:05:42Z","links":{"resolver":"https://pith.science/pith/4WNFINJJYK3TZCEGA4JZLF6H3U","bundle":"https://pith.science/pith/4WNFINJJYK3TZCEGA4JZLF6H3U/bundle.json","state":"https://pith.science/pith/4WNFINJJYK3TZCEGA4JZLF6H3U/state.json","well_known_bundle":"https://pith.science/.well-known/pith/4WNFINJJYK3TZCEGA4JZLF6H3U/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2011:4WNFINJJYK3TZCEGA4JZLF6H3U","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":"ce64c3b39e5afba39f0454504ecd492931789eae1fdd8863639d7da7a5e3605c","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2011-01-13T12:36:57Z","title_canon_sha256":"8cdbe39581630158a5ab0603cd69e89e4ecbbb622bf4cbe5e25f6c4888e50e44"},"schema_version":"1.0","source":{"id":"1101.2544","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1101.2544","created_at":"2026-05-18T02:03:40Z"},{"alias_kind":"arxiv_version","alias_value":"1101.2544v2","created_at":"2026-05-18T02:03:40Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1101.2544","created_at":"2026-05-18T02:03:40Z"},{"alias_kind":"pith_short_12","alias_value":"4WNFINJJYK3T","created_at":"2026-05-18T12:26:20Z"},{"alias_kind":"pith_short_16","alias_value":"4WNFINJJYK3TZCEG","created_at":"2026-05-18T12:26:20Z"},{"alias_kind":"pith_short_8","alias_value":"4WNFINJJ","created_at":"2026-05-18T12:26:20Z"}],"graph_snapshots":[{"event_id":"sha256:78ff493490fa03151a0ba2f6cf62f8dfbc965c23eef14242c41b870c308fe386","target":"graph","created_at":"2026-05-18T02:03:40Z","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":"We characterize substructure in the simulated stellar halos of Cooper et al. (2010) which were formed by the disruption of satellite galaxies within the cosmological N-body simulations of galactic halos of the Aquarius Project. These stellar halos exhibit a wealth of tidal features: broad overdensities and very narrow faint streams akin to those observed around the Milky Way. The substructures are distributed anisotropically on the sky, a characteristic that should become apparent in the next generation of photometric surveys. The normalized RMS of the density of stars on the sky appears to be","authors_text":"Amina Helmi, A. P. Cooper, C. S. Frenk, J. F. Navarro, S. Cole, S. D. M. White","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2011-01-13T12:36:57Z","title":"Substructure in the stellar halos of the Aquarius simulations"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1101.2544","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":"sha256:36840fef66f5843a39b4627490be771bcb1779095f05ad1347f5ebd235b6a8c1","target":"record","created_at":"2026-05-18T02:03:40Z","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":"ce64c3b39e5afba39f0454504ecd492931789eae1fdd8863639d7da7a5e3605c","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2011-01-13T12:36:57Z","title_canon_sha256":"8cdbe39581630158a5ab0603cd69e89e4ecbbb622bf4cbe5e25f6c4888e50e44"},"schema_version":"1.0","source":{"id":"1101.2544","kind":"arxiv","version":2}},"canonical_sha256":"e59a543529c2b73c888607139597c7dd01c06e190f478db88526a3ea929ee9db","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"e59a543529c2b73c888607139597c7dd01c06e190f478db88526a3ea929ee9db","first_computed_at":"2026-05-18T02:03:40.491304Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:03:40.491304Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"IVR3nOr/D+oFezjhAQUkWrMJLkxi5+5FaUL9vM1AfAGJqxYHncZYUwA9wV2xgC7jL2yyS1mEZuPWed81GX0VDw==","signature_status":"signed_v1","signed_at":"2026-05-18T02:03:40.491969Z","signed_message":"canonical_sha256_bytes"},"source_id":"1101.2544","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:36840fef66f5843a39b4627490be771bcb1779095f05ad1347f5ebd235b6a8c1","sha256:78ff493490fa03151a0ba2f6cf62f8dfbc965c23eef14242c41b870c308fe386"],"state_sha256":"9c2b768b4edd9921f470e81ccb3f2e01d22593a76f389b15d5b36120b246a15e"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"RmvvOmF3PexFWdzzPQ2LmUbUUeiHjecM+buXJtgwdJ5ARNl7GSuf7s1vNw3ci1Qf2NYG0tAB6rShv4BDZkkLAA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-25T15:05:42.311943Z","bundle_sha256":"49059aa97c66d5b0b30712bfc2e8f6645e9819a14636100884e11515005105a4"}}