{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2012:HBADDZTXWRMXZKA7M46BA2ARWX","short_pith_number":"pith:HBADDZTX","canonical_record":{"source":{"id":"1210.2710","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2012-10-09T19:55:38Z","cross_cats_sorted":[],"title_canon_sha256":"6f0f90a569ae61c6582f2869a2f8706c21b0d1117a1355633ca89bc7c68cb7e6","abstract_canon_sha256":"5f83d9684f769b89e2208edee894b86e44cf2b58e856c7015f3c93949549ed2a"},"schema_version":"1.0"},"canonical_sha256":"384031e677b4597ca81f673c106811b5cf72bad7c1558f5d2c5520067a7a4919","source":{"kind":"arxiv","id":"1210.2710","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1210.2710","created_at":"2026-05-18T01:54:03Z"},{"alias_kind":"arxiv_version","alias_value":"1210.2710v1","created_at":"2026-05-18T01:54:03Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1210.2710","created_at":"2026-05-18T01:54:03Z"},{"alias_kind":"pith_short_12","alias_value":"HBADDZTXWRMX","created_at":"2026-05-18T12:27:09Z"},{"alias_kind":"pith_short_16","alias_value":"HBADDZTXWRMXZKA7","created_at":"2026-05-18T12:27:09Z"},{"alias_kind":"pith_short_8","alias_value":"HBADDZTX","created_at":"2026-05-18T12:27:09Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2012:HBADDZTXWRMXZKA7M46BA2ARWX","target":"record","payload":{"canonical_record":{"source":{"id":"1210.2710","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2012-10-09T19:55:38Z","cross_cats_sorted":[],"title_canon_sha256":"6f0f90a569ae61c6582f2869a2f8706c21b0d1117a1355633ca89bc7c68cb7e6","abstract_canon_sha256":"5f83d9684f769b89e2208edee894b86e44cf2b58e856c7015f3c93949549ed2a"},"schema_version":"1.0"},"canonical_sha256":"384031e677b4597ca81f673c106811b5cf72bad7c1558f5d2c5520067a7a4919","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:54:03.898002Z","signature_b64":"psEkjo4HitfBtdPlSosDKLzF8P/G3EXWZPpUVSoyPTMjnpc6bH5yhSK/Ze2BR6b7W3uOF7Yp15zUdoSAT7v2BQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"384031e677b4597ca81f673c106811b5cf72bad7c1558f5d2c5520067a7a4919","last_reissued_at":"2026-05-18T01:54:03.897457Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:54:03.897457Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1210.2710","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T01:54:03Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"L/iChSjB7FUs8AK58CJJDn3zIytg1CkPXm8w5foRvy3f4A/WQDDbJoXsUZVRC/RerQqWEvADA8wysvUIw9DmCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-03T21:17:50.941802Z"},"content_sha256":"105958aba9ccf1f900e83ce616338fe4af5f6501b3cfc7806b6cc5a9d561b6e1","schema_version":"1.0","event_id":"sha256:105958aba9ccf1f900e83ce616338fe4af5f6501b3cfc7806b6cc5a9d561b6e1"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2012:HBADDZTXWRMXZKA7M46BA2ARWX","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The Size Difference Between Red And Blue Globular Clusters Is NOT Due To Projection Effects","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.CO","authors_text":"Alison Sills, Jeremy J. Webb, William E. Harris","submitted_at":"2012-10-09T19:55:38Z","abstract_excerpt":"Metal-rich (red) globular clusters in massive galaxies are, on average, smaller than metal-poor (blue) globular clusters. One of the possible explanations for this phenomenon is that the two populations of clusters have different spatial distributions. We test this idea by comparing clusters observed in unusually deep, high signal-to-noise images of M87 with a simulated globular cluster population in which the red and blue clusters have different spatial distributions, matching the observations. We compare the overall distribution of cluster effective radii as well as the relationship between "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1210.2710","kind":"arxiv","version":1},"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":"2026-05-18T01:54:03Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"+nvZ2Jn9cnimt/L4r409GmYrzXLo45nNZsapqu4BcZBOQ60a0JPSyyCZ2s2lENODCYKiNSjokLiWT5DvO7fAAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-03T21:17:50.942144Z"},"content_sha256":"ff8801aad2231c76858478a3f11e75859856e0c07436419ae0062ce6f04b7dbb","schema_version":"1.0","event_id":"sha256:ff8801aad2231c76858478a3f11e75859856e0c07436419ae0062ce6f04b7dbb"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/HBADDZTXWRMXZKA7M46BA2ARWX/bundle.json","state_url":"https://pith.science/pith/HBADDZTXWRMXZKA7M46BA2ARWX/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/HBADDZTXWRMXZKA7M46BA2ARWX/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":"2026-06-03T21:17:50Z","links":{"resolver":"https://pith.science/pith/HBADDZTXWRMXZKA7M46BA2ARWX","bundle":"https://pith.science/pith/HBADDZTXWRMXZKA7M46BA2ARWX/bundle.json","state":"https://pith.science/pith/HBADDZTXWRMXZKA7M46BA2ARWX/state.json","well_known_bundle":"https://pith.science/.well-known/pith/HBADDZTXWRMXZKA7M46BA2ARWX/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:HBADDZTXWRMXZKA7M46BA2ARWX","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":"5f83d9684f769b89e2208edee894b86e44cf2b58e856c7015f3c93949549ed2a","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2012-10-09T19:55:38Z","title_canon_sha256":"6f0f90a569ae61c6582f2869a2f8706c21b0d1117a1355633ca89bc7c68cb7e6"},"schema_version":"1.0","source":{"id":"1210.2710","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1210.2710","created_at":"2026-05-18T01:54:03Z"},{"alias_kind":"arxiv_version","alias_value":"1210.2710v1","created_at":"2026-05-18T01:54:03Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1210.2710","created_at":"2026-05-18T01:54:03Z"},{"alias_kind":"pith_short_12","alias_value":"HBADDZTXWRMX","created_at":"2026-05-18T12:27:09Z"},{"alias_kind":"pith_short_16","alias_value":"HBADDZTXWRMXZKA7","created_at":"2026-05-18T12:27:09Z"},{"alias_kind":"pith_short_8","alias_value":"HBADDZTX","created_at":"2026-05-18T12:27:09Z"}],"graph_snapshots":[{"event_id":"sha256:ff8801aad2231c76858478a3f11e75859856e0c07436419ae0062ce6f04b7dbb","target":"graph","created_at":"2026-05-18T01:54:03Z","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":"Metal-rich (red) globular clusters in massive galaxies are, on average, smaller than metal-poor (blue) globular clusters. One of the possible explanations for this phenomenon is that the two populations of clusters have different spatial distributions. We test this idea by comparing clusters observed in unusually deep, high signal-to-noise images of M87 with a simulated globular cluster population in which the red and blue clusters have different spatial distributions, matching the observations. We compare the overall distribution of cluster effective radii as well as the relationship between ","authors_text":"Alison Sills, Jeremy J. Webb, William E. Harris","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2012-10-09T19:55:38Z","title":"The Size Difference Between Red And Blue Globular Clusters Is NOT Due To Projection Effects"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1210.2710","kind":"arxiv","version":1},"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":"sha256:105958aba9ccf1f900e83ce616338fe4af5f6501b3cfc7806b6cc5a9d561b6e1","target":"record","created_at":"2026-05-18T01:54:03Z","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":"5f83d9684f769b89e2208edee894b86e44cf2b58e856c7015f3c93949549ed2a","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2012-10-09T19:55:38Z","title_canon_sha256":"6f0f90a569ae61c6582f2869a2f8706c21b0d1117a1355633ca89bc7c68cb7e6"},"schema_version":"1.0","source":{"id":"1210.2710","kind":"arxiv","version":1}},"canonical_sha256":"384031e677b4597ca81f673c106811b5cf72bad7c1558f5d2c5520067a7a4919","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"384031e677b4597ca81f673c106811b5cf72bad7c1558f5d2c5520067a7a4919","first_computed_at":"2026-05-18T01:54:03.897457Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:54:03.897457Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"psEkjo4HitfBtdPlSosDKLzF8P/G3EXWZPpUVSoyPTMjnpc6bH5yhSK/Ze2BR6b7W3uOF7Yp15zUdoSAT7v2BQ==","signature_status":"signed_v1","signed_at":"2026-05-18T01:54:03.898002Z","signed_message":"canonical_sha256_bytes"},"source_id":"1210.2710","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:105958aba9ccf1f900e83ce616338fe4af5f6501b3cfc7806b6cc5a9d561b6e1","sha256:ff8801aad2231c76858478a3f11e75859856e0c07436419ae0062ce6f04b7dbb"],"state_sha256":"6c4c4a269d87c9d349dc66275107110633bcb984b161aa5e382941b22e8ec183"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"3j9gfeGYkN1P2n+paz9NSrWUXIzac0UBfW30gZK0pgE1+/WI3KTt45/oEvy8NbwXiZFGeE2+EAlhq0h/Vdo6Dg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-03T21:17:50.944102Z","bundle_sha256":"61ab2f70fe870a48f77b2fc91c7295dadd334d3c92e92d8aebf757217032130a"}}