{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2015:UJVZEBPEQKXZQ7REF7E4EHP7LF","short_pith_number":"pith:UJVZEBPE","canonical_record":{"source":{"id":"1503.03078","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2015-03-10T20:00:38Z","cross_cats_sorted":[],"title_canon_sha256":"cb3beaa7c0c579336cd01c89ef07213b7a9182b630ea1c2614dee9b367d45c77","abstract_canon_sha256":"fb90c746fcf2adb1a17f66207c3bb0e7b6752cfb24ee1dc3ba48d25453a5aa85"},"schema_version":"1.0"},"canonical_sha256":"a26b9205e482af987e242fc9c21dff594f9b80605e71d552cea537797c3cb0a3","source":{"kind":"arxiv","id":"1503.03078","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1503.03078","created_at":"2026-05-18T01:40:52Z"},{"alias_kind":"arxiv_version","alias_value":"1503.03078v2","created_at":"2026-05-18T01:40:52Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1503.03078","created_at":"2026-05-18T01:40:52Z"},{"alias_kind":"pith_short_12","alias_value":"UJVZEBPEQKXZ","created_at":"2026-05-18T12:29:44Z"},{"alias_kind":"pith_short_16","alias_value":"UJVZEBPEQKXZQ7RE","created_at":"2026-05-18T12:29:44Z"},{"alias_kind":"pith_short_8","alias_value":"UJVZEBPE","created_at":"2026-05-18T12:29:44Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2015:UJVZEBPEQKXZQ7REF7E4EHP7LF","target":"record","payload":{"canonical_record":{"source":{"id":"1503.03078","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2015-03-10T20:00:38Z","cross_cats_sorted":[],"title_canon_sha256":"cb3beaa7c0c579336cd01c89ef07213b7a9182b630ea1c2614dee9b367d45c77","abstract_canon_sha256":"fb90c746fcf2adb1a17f66207c3bb0e7b6752cfb24ee1dc3ba48d25453a5aa85"},"schema_version":"1.0"},"canonical_sha256":"a26b9205e482af987e242fc9c21dff594f9b80605e71d552cea537797c3cb0a3","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:40:52.553713Z","signature_b64":"yK88PZSqy46HaLTWbCyHOScxoBI7naBCa5ZHNbig9jkRl5e460NMW67xs+ZrWzktN7Obc6qyeoUm9OVhVk1xCA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"a26b9205e482af987e242fc9c21dff594f9b80605e71d552cea537797c3cb0a3","last_reissued_at":"2026-05-18T01:40:52.553044Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:40:52.553044Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1503.03078","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":"2026-05-18T01:40:52Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"SineJepGXZxIW9OBRAk5WD7hxSoNbt1fCxFL30q3Hwe305tlsF3ZsQDI6bPgLQaUloHQZdnuN+Dmzz7z8nebCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-31T13:57:31.330292Z"},"content_sha256":"d2822d811356c263a3cb6b41914228f3e8a175112e82ffda8bdc729f755f5420","schema_version":"1.0","event_id":"sha256:d2822d811356c263a3cb6b41914228f3e8a175112e82ffda8bdc729f755f5420"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2015:UJVZEBPEQKXZQ7REF7E4EHP7LF","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"A cosmological context for compact massive galaxies","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"Claudio Dalla Vecchia, Ignacio Trujillo, Inma Martinez-Valpuesta, Martin Stringer","submitted_at":"2015-03-10T20:00:38Z","abstract_excerpt":"To provide a quantitative cosmological context to ongoing observational work on the formation histories and location of compact massive galaxies, we locate and study a sample of exceptionally compact systems in the Bolshoi simulation, using the dark matter structural parameters from a real, compact massive galaxy (NGC 1277) as a basis for our working criteria. We find that over 80% of objects in this nominal compact category are substructures of more massive groups or clusters, and that the probability of a given massive substructure being this compact increases significantly with the mass of "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1503.03078","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":"2026-05-18T01:40:52Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"3t2U3ELLIUqSe20u9ANKq3bovImpm9oljJp8aZVZLx5ukzox/DGsjFdgjQHlbzCbWtddJKZQtzRJRB1UzczUAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-31T13:57:31.331040Z"},"content_sha256":"67f4cfe98988a75b97f4d5b15896c1c9bba67fa8b989c2f8979cccf988b2b25f","schema_version":"1.0","event_id":"sha256:67f4cfe98988a75b97f4d5b15896c1c9bba67fa8b989c2f8979cccf988b2b25f"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/UJVZEBPEQKXZQ7REF7E4EHP7LF/bundle.json","state_url":"https://pith.science/pith/UJVZEBPEQKXZQ7REF7E4EHP7LF/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/UJVZEBPEQKXZQ7REF7E4EHP7LF/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":"2026-05-31T13:57:31Z","links":{"resolver":"https://pith.science/pith/UJVZEBPEQKXZQ7REF7E4EHP7LF","bundle":"https://pith.science/pith/UJVZEBPEQKXZQ7REF7E4EHP7LF/bundle.json","state":"https://pith.science/pith/UJVZEBPEQKXZQ7REF7E4EHP7LF/state.json","well_known_bundle":"https://pith.science/.well-known/pith/UJVZEBPEQKXZQ7REF7E4EHP7LF/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:UJVZEBPEQKXZQ7REF7E4EHP7LF","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":"fb90c746fcf2adb1a17f66207c3bb0e7b6752cfb24ee1dc3ba48d25453a5aa85","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2015-03-10T20:00:38Z","title_canon_sha256":"cb3beaa7c0c579336cd01c89ef07213b7a9182b630ea1c2614dee9b367d45c77"},"schema_version":"1.0","source":{"id":"1503.03078","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1503.03078","created_at":"2026-05-18T01:40:52Z"},{"alias_kind":"arxiv_version","alias_value":"1503.03078v2","created_at":"2026-05-18T01:40:52Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1503.03078","created_at":"2026-05-18T01:40:52Z"},{"alias_kind":"pith_short_12","alias_value":"UJVZEBPEQKXZ","created_at":"2026-05-18T12:29:44Z"},{"alias_kind":"pith_short_16","alias_value":"UJVZEBPEQKXZQ7RE","created_at":"2026-05-18T12:29:44Z"},{"alias_kind":"pith_short_8","alias_value":"UJVZEBPE","created_at":"2026-05-18T12:29:44Z"}],"graph_snapshots":[{"event_id":"sha256:67f4cfe98988a75b97f4d5b15896c1c9bba67fa8b989c2f8979cccf988b2b25f","target":"graph","created_at":"2026-05-18T01:40:52Z","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":"To provide a quantitative cosmological context to ongoing observational work on the formation histories and location of compact massive galaxies, we locate and study a sample of exceptionally compact systems in the Bolshoi simulation, using the dark matter structural parameters from a real, compact massive galaxy (NGC 1277) as a basis for our working criteria. We find that over 80% of objects in this nominal compact category are substructures of more massive groups or clusters, and that the probability of a given massive substructure being this compact increases significantly with the mass of ","authors_text":"Claudio Dalla Vecchia, Ignacio Trujillo, Inma Martinez-Valpuesta, Martin Stringer","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2015-03-10T20:00:38Z","title":"A cosmological context for compact massive galaxies"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1503.03078","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:d2822d811356c263a3cb6b41914228f3e8a175112e82ffda8bdc729f755f5420","target":"record","created_at":"2026-05-18T01:40:52Z","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":"fb90c746fcf2adb1a17f66207c3bb0e7b6752cfb24ee1dc3ba48d25453a5aa85","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2015-03-10T20:00:38Z","title_canon_sha256":"cb3beaa7c0c579336cd01c89ef07213b7a9182b630ea1c2614dee9b367d45c77"},"schema_version":"1.0","source":{"id":"1503.03078","kind":"arxiv","version":2}},"canonical_sha256":"a26b9205e482af987e242fc9c21dff594f9b80605e71d552cea537797c3cb0a3","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"a26b9205e482af987e242fc9c21dff594f9b80605e71d552cea537797c3cb0a3","first_computed_at":"2026-05-18T01:40:52.553044Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:40:52.553044Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"yK88PZSqy46HaLTWbCyHOScxoBI7naBCa5ZHNbig9jkRl5e460NMW67xs+ZrWzktN7Obc6qyeoUm9OVhVk1xCA==","signature_status":"signed_v1","signed_at":"2026-05-18T01:40:52.553713Z","signed_message":"canonical_sha256_bytes"},"source_id":"1503.03078","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:d2822d811356c263a3cb6b41914228f3e8a175112e82ffda8bdc729f755f5420","sha256:67f4cfe98988a75b97f4d5b15896c1c9bba67fa8b989c2f8979cccf988b2b25f"],"state_sha256":"167f7a3ce61a5c198aad97b90c694fae176883bb245bc8226d2668f86e16453a"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"542eDqnLQB1SBOOo4ct4DfG2Z32jhm2Bu14L/NDHvqPYCL4P1C3SJITKWrbv93ZNoKZajFxiM0xRCIyjpd2kCQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-31T13:57:31.334939Z","bundle_sha256":"434e40867220a5adc1af726d79314d3beb25ab5ffe49f6ddbc3a9a8f3c75487c"}}