{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2015:QTOWH2KQ2VTFS5G6CEPDEZKPA2","short_pith_number":"pith:QTOWH2KQ","canonical_record":{"source":{"id":"1512.01620","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2015-12-05T03:53:51Z","cross_cats_sorted":[],"title_canon_sha256":"1aeb06b343781b450aeaf678705578ff84359329bd059283d07368da18e5c13d","abstract_canon_sha256":"2f17fe0d084269d6e2d315e32f5569fa14dded6ff1b7608fce1b07cf676da916"},"schema_version":"1.0"},"canonical_sha256":"84dd63e950d5665974de111e32654f068298574121ad8b101d54337319b63dca","source":{"kind":"arxiv","id":"1512.01620","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1512.01620","created_at":"2026-05-18T01:18:30Z"},{"alias_kind":"arxiv_version","alias_value":"1512.01620v2","created_at":"2026-05-18T01:18:30Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1512.01620","created_at":"2026-05-18T01:18:30Z"},{"alias_kind":"pith_short_12","alias_value":"QTOWH2KQ2VTF","created_at":"2026-05-18T12:29:37Z"},{"alias_kind":"pith_short_16","alias_value":"QTOWH2KQ2VTFS5G6","created_at":"2026-05-18T12:29:37Z"},{"alias_kind":"pith_short_8","alias_value":"QTOWH2KQ","created_at":"2026-05-18T12:29:37Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2015:QTOWH2KQ2VTFS5G6CEPDEZKPA2","target":"record","payload":{"canonical_record":{"source":{"id":"1512.01620","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2015-12-05T03:53:51Z","cross_cats_sorted":[],"title_canon_sha256":"1aeb06b343781b450aeaf678705578ff84359329bd059283d07368da18e5c13d","abstract_canon_sha256":"2f17fe0d084269d6e2d315e32f5569fa14dded6ff1b7608fce1b07cf676da916"},"schema_version":"1.0"},"canonical_sha256":"84dd63e950d5665974de111e32654f068298574121ad8b101d54337319b63dca","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:18:30.322412Z","signature_b64":"iJLXlOZ6Ff9nK2LE3SqjEoyJ3ZPbnlZUnrxahcBE+8mbhaSUQ1eo2aVNqTlnWu0HeEPS6CUaZkIKVAmkCVMECA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"84dd63e950d5665974de111e32654f068298574121ad8b101d54337319b63dca","last_reissued_at":"2026-05-18T01:18:30.321861Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:18:30.321861Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1512.01620","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":"2026-05-18T01:18:30Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"VeKKYZFD1yXhLqduttnQRfvjL4i0PiSEc7uMVEE9guUhmuugWcnK1iBlD9O1qNlWZ9SQhWB4byXEppnv3xFyDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-07T10:19:28.740345Z"},"content_sha256":"2071f3d294b694b13a30f3b6778d57a745ea4272598a03ddc6ec6e2b6dda28ac","schema_version":"1.0","event_id":"sha256:2071f3d294b694b13a30f3b6778d57a745ea4272598a03ddc6ec6e2b6dda28ac"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2015:QTOWH2KQ2VTFS5G6CEPDEZKPA2","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Modeling GD-1 Gaps in a Milky-Way Potential","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"Raymond G. Carlberg","submitted_at":"2015-12-05T03:53:51Z","abstract_excerpt":"The GD-1 star stream is currently the best available for identifying density fluctuations, \"gaps\", along its length as a test of the LCDM prediction of large numbers of dark matter sub-halos orbiting in the halo. Density variations of some form are present, since the variance of the density along the stream is three times that expected from the empirically estimated variation in the filtered mean star counts. The density variations are characterized with filters that approximate the shape of sub-halo gravitationally induced stream gaps. The filters locate gaps and measures their amplitude, lea"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1512.01620","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":"2026-05-18T01:18:30Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"PUjuyoMjjlPk0FNFgB9y3cDarXOxyph4KxiX+WOM8FciIsGuIs71SnrSVtOoHRdFBtMOkv+JwmURxBgluNINCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-07T10:19:28.740980Z"},"content_sha256":"278872600e64908328a6b4a3cec01a2f2ac313de7a6f46c61af4a6b6ad0d8bf3","schema_version":"1.0","event_id":"sha256:278872600e64908328a6b4a3cec01a2f2ac313de7a6f46c61af4a6b6ad0d8bf3"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/QTOWH2KQ2VTFS5G6CEPDEZKPA2/bundle.json","state_url":"https://pith.science/pith/QTOWH2KQ2VTFS5G6CEPDEZKPA2/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/QTOWH2KQ2VTFS5G6CEPDEZKPA2/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":"2026-06-07T10:19:28Z","links":{"resolver":"https://pith.science/pith/QTOWH2KQ2VTFS5G6CEPDEZKPA2","bundle":"https://pith.science/pith/QTOWH2KQ2VTFS5G6CEPDEZKPA2/bundle.json","state":"https://pith.science/pith/QTOWH2KQ2VTFS5G6CEPDEZKPA2/state.json","well_known_bundle":"https://pith.science/.well-known/pith/QTOWH2KQ2VTFS5G6CEPDEZKPA2/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:QTOWH2KQ2VTFS5G6CEPDEZKPA2","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":"2f17fe0d084269d6e2d315e32f5569fa14dded6ff1b7608fce1b07cf676da916","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2015-12-05T03:53:51Z","title_canon_sha256":"1aeb06b343781b450aeaf678705578ff84359329bd059283d07368da18e5c13d"},"schema_version":"1.0","source":{"id":"1512.01620","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1512.01620","created_at":"2026-05-18T01:18:30Z"},{"alias_kind":"arxiv_version","alias_value":"1512.01620v2","created_at":"2026-05-18T01:18:30Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1512.01620","created_at":"2026-05-18T01:18:30Z"},{"alias_kind":"pith_short_12","alias_value":"QTOWH2KQ2VTF","created_at":"2026-05-18T12:29:37Z"},{"alias_kind":"pith_short_16","alias_value":"QTOWH2KQ2VTFS5G6","created_at":"2026-05-18T12:29:37Z"},{"alias_kind":"pith_short_8","alias_value":"QTOWH2KQ","created_at":"2026-05-18T12:29:37Z"}],"graph_snapshots":[{"event_id":"sha256:278872600e64908328a6b4a3cec01a2f2ac313de7a6f46c61af4a6b6ad0d8bf3","target":"graph","created_at":"2026-05-18T01:18:30Z","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":"The GD-1 star stream is currently the best available for identifying density fluctuations, \"gaps\", along its length as a test of the LCDM prediction of large numbers of dark matter sub-halos orbiting in the halo. Density variations of some form are present, since the variance of the density along the stream is three times that expected from the empirically estimated variation in the filtered mean star counts. The density variations are characterized with filters that approximate the shape of sub-halo gravitationally induced stream gaps. The filters locate gaps and measures their amplitude, lea","authors_text":"Raymond G. Carlberg","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2015-12-05T03:53:51Z","title":"Modeling GD-1 Gaps in a Milky-Way Potential"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1512.01620","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":"sha256:2071f3d294b694b13a30f3b6778d57a745ea4272598a03ddc6ec6e2b6dda28ac","target":"record","created_at":"2026-05-18T01:18:30Z","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":"2f17fe0d084269d6e2d315e32f5569fa14dded6ff1b7608fce1b07cf676da916","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2015-12-05T03:53:51Z","title_canon_sha256":"1aeb06b343781b450aeaf678705578ff84359329bd059283d07368da18e5c13d"},"schema_version":"1.0","source":{"id":"1512.01620","kind":"arxiv","version":2}},"canonical_sha256":"84dd63e950d5665974de111e32654f068298574121ad8b101d54337319b63dca","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"84dd63e950d5665974de111e32654f068298574121ad8b101d54337319b63dca","first_computed_at":"2026-05-18T01:18:30.321861Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:18:30.321861Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"iJLXlOZ6Ff9nK2LE3SqjEoyJ3ZPbnlZUnrxahcBE+8mbhaSUQ1eo2aVNqTlnWu0HeEPS6CUaZkIKVAmkCVMECA==","signature_status":"signed_v1","signed_at":"2026-05-18T01:18:30.322412Z","signed_message":"canonical_sha256_bytes"},"source_id":"1512.01620","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:2071f3d294b694b13a30f3b6778d57a745ea4272598a03ddc6ec6e2b6dda28ac","sha256:278872600e64908328a6b4a3cec01a2f2ac313de7a6f46c61af4a6b6ad0d8bf3"],"state_sha256":"5af3569b3d73c0dc52343b1c227edb12411401e0cf4f7ffb8de3c44facc96dca"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"/uwd08bhtgD3BbsttA8rhQvas2TDJhywc7jmVMOP7rsDKugf0uoBxFDTzUkgBg9YflQ2/cDwpAjGDxxCFK5rCw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-07T10:19:28.743828Z","bundle_sha256":"079ad1e7f151947d4ab3620d4089d6d1afb36687322ed568c0c897af6ac8f5dc"}}