{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2015:TW3BFNSVA5U5IPKEK3VJBXYMW6","short_pith_number":"pith:TW3BFNSV","canonical_record":{"source":{"id":"1502.07024","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2015-02-25T01:17:39Z","cross_cats_sorted":["astro-ph.CO"],"title_canon_sha256":"9e1b8a568728496c5a455a400ad042260d811f55cd9d30d5b28e09bed98afbf3","abstract_canon_sha256":"7417813cb453266a04a8600bef86938a71828d42b295e04d576b481864ff3fb0"},"schema_version":"1.0"},"canonical_sha256":"9db612b6550769d43d4456ea90df0cb7aee7e3f2f1656da9377eb4562b03a56a","source":{"kind":"arxiv","id":"1502.07024","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1502.07024","created_at":"2026-05-18T01:40:54Z"},{"alias_kind":"arxiv_version","alias_value":"1502.07024v2","created_at":"2026-05-18T01:40:54Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1502.07024","created_at":"2026-05-18T01:40:54Z"},{"alias_kind":"pith_short_12","alias_value":"TW3BFNSVA5U5","created_at":"2026-05-18T12:29:42Z"},{"alias_kind":"pith_short_16","alias_value":"TW3BFNSVA5U5IPKE","created_at":"2026-05-18T12:29:42Z"},{"alias_kind":"pith_short_8","alias_value":"TW3BFNSV","created_at":"2026-05-18T12:29:42Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2015:TW3BFNSVA5U5IPKEK3VJBXYMW6","target":"record","payload":{"canonical_record":{"source":{"id":"1502.07024","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2015-02-25T01:17:39Z","cross_cats_sorted":["astro-ph.CO"],"title_canon_sha256":"9e1b8a568728496c5a455a400ad042260d811f55cd9d30d5b28e09bed98afbf3","abstract_canon_sha256":"7417813cb453266a04a8600bef86938a71828d42b295e04d576b481864ff3fb0"},"schema_version":"1.0"},"canonical_sha256":"9db612b6550769d43d4456ea90df0cb7aee7e3f2f1656da9377eb4562b03a56a","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:40:54.666019Z","signature_b64":"S71UzKPOkVE1EAXpQ2JgpoFYG/9AwHUmrWDaxkRBVJOm4UWHNHzvFxwgPms1Ef9JmZzedAw8s82UA0a1g2bwDA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"9db612b6550769d43d4456ea90df0cb7aee7e3f2f1656da9377eb4562b03a56a","last_reissued_at":"2026-05-18T01:40:54.665309Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:40:54.665309Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1502.07024","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":"2026-05-18T01:40:54Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"GiBmEcvhe5UqpJHaExO9+VOg+/c6KISdklp1RhDwbRStM/qzDWMD8lsaRjQTJKu7GhUhdINi7L0Xr0MMw3KfCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T19:39:56.207532Z"},"content_sha256":"c91171058e50497d718bc6254e9e87dadee415c5b90f6d6aac68ea6b694a5d23","schema_version":"1.0","event_id":"sha256:c91171058e50497d718bc6254e9e87dadee415c5b90f6d6aac68ea6b694a5d23"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2015:TW3BFNSVA5U5IPKEK3VJBXYMW6","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Hiding in plain sight: An abundance of compact massive spheroids in the local Universe","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.CO"],"primary_cat":"astro-ph.GA","authors_text":"Alister W. Graham, Bililign T. Dullo, Giulia A. D. Savorgnan","submitted_at":"2015-02-25T01:17:39Z","abstract_excerpt":"It has been widely remarked that compact, massive, elliptical-like galaxies are abundant at high redshifts but exceedingly rare in the Universe today, implying significant evolution such that their sizes at z ~ 2+/-0.6 have increased by factors of 3 to 6 to become today's massive elliptical galaxies. These claims have been based on studies which measured the half-light radii of galaxies as though they are all single component systems. Here we identify 21 spheroidal stellar systems within 90 Mpc that have half-light, major-axis radii R_e < ~2 kpc, stellar masses 0.7x10^{11} < M_*/M_Sun < 1.4x10"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1502.07024","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":"2026-05-18T01:40:54Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"4Lay4VcAY1zIb5YqHZzI4SQ49PYgHYL/VQPTYEOo5PcMMP8KO2SWWVTiT3eR9fXfZms72YvhNEBz7zvb5E0aAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T19:39:56.208250Z"},"content_sha256":"8ef5191f8aedd729a9da5d7f22d0d110826aa6fbf97a60628d2f36f2876b010d","schema_version":"1.0","event_id":"sha256:8ef5191f8aedd729a9da5d7f22d0d110826aa6fbf97a60628d2f36f2876b010d"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/TW3BFNSVA5U5IPKEK3VJBXYMW6/bundle.json","state_url":"https://pith.science/pith/TW3BFNSVA5U5IPKEK3VJBXYMW6/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/TW3BFNSVA5U5IPKEK3VJBXYMW6/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":"2026-05-25T19:39:56Z","links":{"resolver":"https://pith.science/pith/TW3BFNSVA5U5IPKEK3VJBXYMW6","bundle":"https://pith.science/pith/TW3BFNSVA5U5IPKEK3VJBXYMW6/bundle.json","state":"https://pith.science/pith/TW3BFNSVA5U5IPKEK3VJBXYMW6/state.json","well_known_bundle":"https://pith.science/.well-known/pith/TW3BFNSVA5U5IPKEK3VJBXYMW6/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:TW3BFNSVA5U5IPKEK3VJBXYMW6","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":"7417813cb453266a04a8600bef86938a71828d42b295e04d576b481864ff3fb0","cross_cats_sorted":["astro-ph.CO"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2015-02-25T01:17:39Z","title_canon_sha256":"9e1b8a568728496c5a455a400ad042260d811f55cd9d30d5b28e09bed98afbf3"},"schema_version":"1.0","source":{"id":"1502.07024","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1502.07024","created_at":"2026-05-18T01:40:54Z"},{"alias_kind":"arxiv_version","alias_value":"1502.07024v2","created_at":"2026-05-18T01:40:54Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1502.07024","created_at":"2026-05-18T01:40:54Z"},{"alias_kind":"pith_short_12","alias_value":"TW3BFNSVA5U5","created_at":"2026-05-18T12:29:42Z"},{"alias_kind":"pith_short_16","alias_value":"TW3BFNSVA5U5IPKE","created_at":"2026-05-18T12:29:42Z"},{"alias_kind":"pith_short_8","alias_value":"TW3BFNSV","created_at":"2026-05-18T12:29:42Z"}],"graph_snapshots":[{"event_id":"sha256:8ef5191f8aedd729a9da5d7f22d0d110826aa6fbf97a60628d2f36f2876b010d","target":"graph","created_at":"2026-05-18T01:40:54Z","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":"It has been widely remarked that compact, massive, elliptical-like galaxies are abundant at high redshifts but exceedingly rare in the Universe today, implying significant evolution such that their sizes at z ~ 2+/-0.6 have increased by factors of 3 to 6 to become today's massive elliptical galaxies. These claims have been based on studies which measured the half-light radii of galaxies as though they are all single component systems. Here we identify 21 spheroidal stellar systems within 90 Mpc that have half-light, major-axis radii R_e < ~2 kpc, stellar masses 0.7x10^{11} < M_*/M_Sun < 1.4x10","authors_text":"Alister W. Graham, Bililign T. Dullo, Giulia A. D. Savorgnan","cross_cats":["astro-ph.CO"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2015-02-25T01:17:39Z","title":"Hiding in plain sight: An abundance of compact massive spheroids in the local Universe"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1502.07024","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:c91171058e50497d718bc6254e9e87dadee415c5b90f6d6aac68ea6b694a5d23","target":"record","created_at":"2026-05-18T01:40:54Z","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":"7417813cb453266a04a8600bef86938a71828d42b295e04d576b481864ff3fb0","cross_cats_sorted":["astro-ph.CO"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2015-02-25T01:17:39Z","title_canon_sha256":"9e1b8a568728496c5a455a400ad042260d811f55cd9d30d5b28e09bed98afbf3"},"schema_version":"1.0","source":{"id":"1502.07024","kind":"arxiv","version":2}},"canonical_sha256":"9db612b6550769d43d4456ea90df0cb7aee7e3f2f1656da9377eb4562b03a56a","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"9db612b6550769d43d4456ea90df0cb7aee7e3f2f1656da9377eb4562b03a56a","first_computed_at":"2026-05-18T01:40:54.665309Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:40:54.665309Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"S71UzKPOkVE1EAXpQ2JgpoFYG/9AwHUmrWDaxkRBVJOm4UWHNHzvFxwgPms1Ef9JmZzedAw8s82UA0a1g2bwDA==","signature_status":"signed_v1","signed_at":"2026-05-18T01:40:54.666019Z","signed_message":"canonical_sha256_bytes"},"source_id":"1502.07024","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:c91171058e50497d718bc6254e9e87dadee415c5b90f6d6aac68ea6b694a5d23","sha256:8ef5191f8aedd729a9da5d7f22d0d110826aa6fbf97a60628d2f36f2876b010d"],"state_sha256":"a6cf4653958eb9cf472b9bf9bf2150ee55aa44c902dc025ad4cd677c2c34d15f"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"nzzrb7yNmPgSc+KIkcX60ZrEuEi7qNIhJbfb42nxn4duhnkXsH+C0Hx12WAI155mq4+4SvKX0FXYOOiGwij/Cw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-25T19:39:56.211060Z","bundle_sha256":"ed9cefb036dabbf9348a0054ae7c17796d15d2b9e3fc92887102e6134f415b94"}}