{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2019:SR5HDGFYQLAGGSSLCGY4ZTZOI3","short_pith_number":"pith:SR5HDGFY","canonical_record":{"source":{"id":"1910.07544","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2019-10-16T18:00:08Z","cross_cats_sorted":[],"title_canon_sha256":"a0b153dea6fc20fa1e408addb764847694261b104dbc5de506c0ae3e76114114","abstract_canon_sha256":"044dc3bb88b1faabd96646a32c8db450fdf34fea6e09cf9378366aee55a93a7c"},"schema_version":"1.0"},"canonical_sha256":"947a7198b882c0634a4b11b1cccf2e46cc37838de6da1c6fe27f83c87170cb38","source":{"kind":"arxiv","id":"1910.07544","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1910.07544","created_at":"2026-07-05T00:23:45Z"},{"alias_kind":"arxiv_version","alias_value":"1910.07544v2","created_at":"2026-07-05T00:23:45Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1910.07544","created_at":"2026-07-05T00:23:45Z"},{"alias_kind":"pith_short_12","alias_value":"SR5HDGFYQLAG","created_at":"2026-07-05T00:23:45Z"},{"alias_kind":"pith_short_16","alias_value":"SR5HDGFYQLAGGSSL","created_at":"2026-07-05T00:23:45Z"},{"alias_kind":"pith_short_8","alias_value":"SR5HDGFY","created_at":"2026-07-05T00:23:45Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2019:SR5HDGFYQLAGGSSLCGY4ZTZOI3","target":"record","payload":{"canonical_record":{"source":{"id":"1910.07544","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2019-10-16T18:00:08Z","cross_cats_sorted":[],"title_canon_sha256":"a0b153dea6fc20fa1e408addb764847694261b104dbc5de506c0ae3e76114114","abstract_canon_sha256":"044dc3bb88b1faabd96646a32c8db450fdf34fea6e09cf9378366aee55a93a7c"},"schema_version":"1.0"},"canonical_sha256":"947a7198b882c0634a4b11b1cccf2e46cc37838de6da1c6fe27f83c87170cb38","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T00:23:45.515289Z","signature_b64":"UqSMZi7nBJxdMYC1OTFtG+wsMoaKcVLlKU/baY3DyYKCfYlT0uGpfNPLk1EC2eAgUFLx7a2R027A5J3hAC/NDQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"947a7198b882c0634a4b11b1cccf2e46cc37838de6da1c6fe27f83c87170cb38","last_reissued_at":"2026-07-05T00:23:45.514762Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T00:23:45.514762Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1910.07544","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":"2026-07-05T00:23:45Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"oQbFQfkbwUdwzxM/q6tiAlNX6x4gKs2zF5r/HXNpQKDO/5Lnep9T2zwEMgzD92b5qQPS41QRydyKZ3KJyyyACQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-03T19:40:10.257059Z"},"content_sha256":"0d1cbc2787a390683a94e97b12d0f6ee3cbbb92dc41e2e88efead34a6c504256","schema_version":"1.0","event_id":"sha256:0d1cbc2787a390683a94e97b12d0f6ee3cbbb92dc41e2e88efead34a6c504256"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2019:SR5HDGFYQLAGGSSLCGY4ZTZOI3","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Massive and old quiescent galaxies at high redshift","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"Andrea Cimatti, Giacomo Girelli, Micol Bolzonella","submitted_at":"2019-10-16T18:00:08Z","abstract_excerpt":"Massive quiescent galaxies at high redshift can shed light on the processes of galaxy mass assembly and quenching of the star formation at early epochs. We present observer-frame color-color diagrams designed to identify candidate quiescent galaxies from z=2.5 up to the highest redshifts, that can be then be selected for spectroscopic follow-up observations. The application to the COSMOS2015 catalog shows that, after refining the selection with SED fitting, the number of massive old quiescent galaxies exceeds the forecast of state-of-the-art semi-analytic models, pointing out the need of an im"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1910.07544","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/1910.07544/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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":"2026-07-05T00:23:45Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"5chxWquCxrlRxy0tOtNeyB43mlwCLfNwefM7MtYKj8eQF9E6rf2GX2F+TTSkxmPapiSoCYIeSgjUM30A3N7ODg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-03T19:40:10.257931Z"},"content_sha256":"b1005584852461e4225acf1e282206a5872cf00474d88959c2df02f5d54b1259","schema_version":"1.0","event_id":"sha256:b1005584852461e4225acf1e282206a5872cf00474d88959c2df02f5d54b1259"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/SR5HDGFYQLAGGSSLCGY4ZTZOI3/bundle.json","state_url":"https://pith.science/pith/SR5HDGFYQLAGGSSLCGY4ZTZOI3/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/SR5HDGFYQLAGGSSLCGY4ZTZOI3/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":"2026-08-03T19:40:10Z","links":{"resolver":"https://pith.science/pith/SR5HDGFYQLAGGSSLCGY4ZTZOI3","bundle":"https://pith.science/pith/SR5HDGFYQLAGGSSLCGY4ZTZOI3/bundle.json","state":"https://pith.science/pith/SR5HDGFYQLAGGSSLCGY4ZTZOI3/state.json","well_known_bundle":"https://pith.science/.well-known/pith/SR5HDGFYQLAGGSSLCGY4ZTZOI3/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:SR5HDGFYQLAGGSSLCGY4ZTZOI3","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":"044dc3bb88b1faabd96646a32c8db450fdf34fea6e09cf9378366aee55a93a7c","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2019-10-16T18:00:08Z","title_canon_sha256":"a0b153dea6fc20fa1e408addb764847694261b104dbc5de506c0ae3e76114114"},"schema_version":"1.0","source":{"id":"1910.07544","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1910.07544","created_at":"2026-07-05T00:23:45Z"},{"alias_kind":"arxiv_version","alias_value":"1910.07544v2","created_at":"2026-07-05T00:23:45Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1910.07544","created_at":"2026-07-05T00:23:45Z"},{"alias_kind":"pith_short_12","alias_value":"SR5HDGFYQLAG","created_at":"2026-07-05T00:23:45Z"},{"alias_kind":"pith_short_16","alias_value":"SR5HDGFYQLAGGSSL","created_at":"2026-07-05T00:23:45Z"},{"alias_kind":"pith_short_8","alias_value":"SR5HDGFY","created_at":"2026-07-05T00:23:45Z"}],"graph_snapshots":[{"event_id":"sha256:b1005584852461e4225acf1e282206a5872cf00474d88959c2df02f5d54b1259","target":"graph","created_at":"2026-07-05T00:23:45Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/1910.07544/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Massive quiescent galaxies at high redshift can shed light on the processes of galaxy mass assembly and quenching of the star formation at early epochs. We present observer-frame color-color diagrams designed to identify candidate quiescent galaxies from z=2.5 up to the highest redshifts, that can be then be selected for spectroscopic follow-up observations. The application to the COSMOS2015 catalog shows that, after refining the selection with SED fitting, the number of massive old quiescent galaxies exceeds the forecast of state-of-the-art semi-analytic models, pointing out the need of an im","authors_text":"Andrea Cimatti, Giacomo Girelli, Micol Bolzonella","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2019-10-16T18:00:08Z","title":"Massive and old quiescent galaxies at high redshift"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1910.07544","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":"sha256:0d1cbc2787a390683a94e97b12d0f6ee3cbbb92dc41e2e88efead34a6c504256","target":"record","created_at":"2026-07-05T00:23:45Z","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":"044dc3bb88b1faabd96646a32c8db450fdf34fea6e09cf9378366aee55a93a7c","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2019-10-16T18:00:08Z","title_canon_sha256":"a0b153dea6fc20fa1e408addb764847694261b104dbc5de506c0ae3e76114114"},"schema_version":"1.0","source":{"id":"1910.07544","kind":"arxiv","version":2}},"canonical_sha256":"947a7198b882c0634a4b11b1cccf2e46cc37838de6da1c6fe27f83c87170cb38","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"947a7198b882c0634a4b11b1cccf2e46cc37838de6da1c6fe27f83c87170cb38","first_computed_at":"2026-07-05T00:23:45.514762Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T00:23:45.514762Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"UqSMZi7nBJxdMYC1OTFtG+wsMoaKcVLlKU/baY3DyYKCfYlT0uGpfNPLk1EC2eAgUFLx7a2R027A5J3hAC/NDQ==","signature_status":"signed_v1","signed_at":"2026-07-05T00:23:45.515289Z","signed_message":"canonical_sha256_bytes"},"source_id":"1910.07544","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:0d1cbc2787a390683a94e97b12d0f6ee3cbbb92dc41e2e88efead34a6c504256","sha256:b1005584852461e4225acf1e282206a5872cf00474d88959c2df02f5d54b1259"],"state_sha256":"6bca783645bc7dfb648815868fb7cdc0311f57f42be358d9bbf3e152cf32bc77"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"2FyDdGl0jtvdBtaU0gWRFwFJmdGMKdDeMOa7eZdPkbs+ijUCy2Delc9MmBxLyCfeFrVl19HPnpMWW2jBQjDCAQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-03T19:40:10.263158Z","bundle_sha256":"ab61d355459ceb39b6dac6eb74ca00722fa99da59bbc4892ba17e9e23cc49fa7"}}