{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2014:PKGB7KLXGCQO2WI6RKQP35EOKQ","short_pith_number":"pith:PKGB7KLX","canonical_record":{"source":{"id":"1401.1510","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2014-01-07T21:10:16Z","cross_cats_sorted":["astro-ph.CO"],"title_canon_sha256":"179492067bd28c51ba8fc2c411b6fead4b9e34f83d914d980c9c530477f74b31","abstract_canon_sha256":"b7da0ca6e0c2204f3ba34eb34a396c3e05ee1f2c58cb63541d08b5aadf3f05f0"},"schema_version":"1.0"},"canonical_sha256":"7a8c1fa97730a0ed591e8aa0fdf48e540ed01b03ad420f73a0c88e32ef0355cf","source":{"kind":"arxiv","id":"1401.1510","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1401.1510","created_at":"2026-05-18T01:45:33Z"},{"alias_kind":"arxiv_version","alias_value":"1401.1510v1","created_at":"2026-05-18T01:45:33Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1401.1510","created_at":"2026-05-18T01:45:33Z"},{"alias_kind":"pith_short_12","alias_value":"PKGB7KLXGCQO","created_at":"2026-05-18T12:28:43Z"},{"alias_kind":"pith_short_16","alias_value":"PKGB7KLXGCQO2WI6","created_at":"2026-05-18T12:28:43Z"},{"alias_kind":"pith_short_8","alias_value":"PKGB7KLX","created_at":"2026-05-18T12:28:43Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2014:PKGB7KLXGCQO2WI6RKQP35EOKQ","target":"record","payload":{"canonical_record":{"source":{"id":"1401.1510","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2014-01-07T21:10:16Z","cross_cats_sorted":["astro-ph.CO"],"title_canon_sha256":"179492067bd28c51ba8fc2c411b6fead4b9e34f83d914d980c9c530477f74b31","abstract_canon_sha256":"b7da0ca6e0c2204f3ba34eb34a396c3e05ee1f2c58cb63541d08b5aadf3f05f0"},"schema_version":"1.0"},"canonical_sha256":"7a8c1fa97730a0ed591e8aa0fdf48e540ed01b03ad420f73a0c88e32ef0355cf","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:45:33.104051Z","signature_b64":"HnQ+K6KIhQCGjZcTeIL1Z+gWENQ7/QFWav0EXSyk470QDlsSdyZKiIXhcxdWzeyOzkbluzS7wxESHJGYUwANAg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"7a8c1fa97730a0ed591e8aa0fdf48e540ed01b03ad420f73a0c88e32ef0355cf","last_reissued_at":"2026-05-18T01:45:33.103531Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:45:33.103531Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1401.1510","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":"2026-05-18T01:45:33Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"JM5+WXjElwRNSSSR8EzVtCVbhuSUsQ8qsR4l7O8VmB330ab1qQ2KjHvs1EFx6HktFV6zHHtbLgtX3sn1v7TdAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-19T09:03:10.412455Z"},"content_sha256":"a18e1407154b479405da5d9ea4c695d84ab00f200876f3e85bfca8ea69ec7b30","schema_version":"1.0","event_id":"sha256:a18e1407154b479405da5d9ea4c695d84ab00f200876f3e85bfca8ea69ec7b30"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2014:PKGB7KLXGCQO2WI6RKQP35EOKQ","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Sub-millimeter galaxies as progenitors of compact quiescent galaxies","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.CO"],"primary_cat":"astro-ph.GA","authors_text":"A. Karim, A. W. S. Man, A. Zirm, B. Magnelli, D. Lutz, D. Riechers, D. Sanders, H. McCracken, J.-K. Krogager, J. Krpan, J. Staguhn, K. Schawinski, K. Sheth, M. Michalowski, P. Capak, S. Berta, S. Toft, S. Wuyts, V. Smolcic","submitted_at":"2014-01-07T21:10:16Z","abstract_excerpt":"Three billion years after the big bang (at redshift z=2), half of the most massive galaxies were already old, quiescent systems with little to no residual star formation and extremely compact with stellar mass densities at least an order of magnitude larger than in low redshift ellipticals, their descendants. Little is known about how they formed, but their evolved, dense stellar populations suggest formation within intense, compact starbursts 1-2 Gyr earlier (at 3<z<6). Simulations show that gas-rich major mergers can give rise to such starbursts which produce dense remnants. Sub-millimeter s"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1401.1510","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":"2026-05-18T01:45:33Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"5zPtdyeajVvtge4otJklnGrDkphHuknDKpxaQhWR3kn7i/wM+nHXub9kVaU4PS6oZefbRRPxJjxc4Xuwu1aDBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-19T09:03:10.413118Z"},"content_sha256":"6360786907274bba9dc5ca1a948d0a25c6d42e7eaee1d04ee9b7f00eccba394f","schema_version":"1.0","event_id":"sha256:6360786907274bba9dc5ca1a948d0a25c6d42e7eaee1d04ee9b7f00eccba394f"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/PKGB7KLXGCQO2WI6RKQP35EOKQ/bundle.json","state_url":"https://pith.science/pith/PKGB7KLXGCQO2WI6RKQP35EOKQ/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/PKGB7KLXGCQO2WI6RKQP35EOKQ/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":"2026-05-19T09:03:10Z","links":{"resolver":"https://pith.science/pith/PKGB7KLXGCQO2WI6RKQP35EOKQ","bundle":"https://pith.science/pith/PKGB7KLXGCQO2WI6RKQP35EOKQ/bundle.json","state":"https://pith.science/pith/PKGB7KLXGCQO2WI6RKQP35EOKQ/state.json","well_known_bundle":"https://pith.science/.well-known/pith/PKGB7KLXGCQO2WI6RKQP35EOKQ/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2014:PKGB7KLXGCQO2WI6RKQP35EOKQ","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":"b7da0ca6e0c2204f3ba34eb34a396c3e05ee1f2c58cb63541d08b5aadf3f05f0","cross_cats_sorted":["astro-ph.CO"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2014-01-07T21:10:16Z","title_canon_sha256":"179492067bd28c51ba8fc2c411b6fead4b9e34f83d914d980c9c530477f74b31"},"schema_version":"1.0","source":{"id":"1401.1510","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1401.1510","created_at":"2026-05-18T01:45:33Z"},{"alias_kind":"arxiv_version","alias_value":"1401.1510v1","created_at":"2026-05-18T01:45:33Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1401.1510","created_at":"2026-05-18T01:45:33Z"},{"alias_kind":"pith_short_12","alias_value":"PKGB7KLXGCQO","created_at":"2026-05-18T12:28:43Z"},{"alias_kind":"pith_short_16","alias_value":"PKGB7KLXGCQO2WI6","created_at":"2026-05-18T12:28:43Z"},{"alias_kind":"pith_short_8","alias_value":"PKGB7KLX","created_at":"2026-05-18T12:28:43Z"}],"graph_snapshots":[{"event_id":"sha256:6360786907274bba9dc5ca1a948d0a25c6d42e7eaee1d04ee9b7f00eccba394f","target":"graph","created_at":"2026-05-18T01:45:33Z","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":"Three billion years after the big bang (at redshift z=2), half of the most massive galaxies were already old, quiescent systems with little to no residual star formation and extremely compact with stellar mass densities at least an order of magnitude larger than in low redshift ellipticals, their descendants. Little is known about how they formed, but their evolved, dense stellar populations suggest formation within intense, compact starbursts 1-2 Gyr earlier (at 3<z<6). Simulations show that gas-rich major mergers can give rise to such starbursts which produce dense remnants. Sub-millimeter s","authors_text":"A. Karim, A. W. S. Man, A. Zirm, B. Magnelli, D. Lutz, D. Riechers, D. Sanders, H. McCracken, J.-K. Krogager, J. Krpan, J. Staguhn, K. Schawinski, K. Sheth, M. Michalowski, P. Capak, S. Berta, S. Toft, S. Wuyts, V. Smolcic","cross_cats":["astro-ph.CO"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2014-01-07T21:10:16Z","title":"Sub-millimeter galaxies as progenitors of compact quiescent galaxies"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1401.1510","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:a18e1407154b479405da5d9ea4c695d84ab00f200876f3e85bfca8ea69ec7b30","target":"record","created_at":"2026-05-18T01:45:33Z","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":"b7da0ca6e0c2204f3ba34eb34a396c3e05ee1f2c58cb63541d08b5aadf3f05f0","cross_cats_sorted":["astro-ph.CO"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2014-01-07T21:10:16Z","title_canon_sha256":"179492067bd28c51ba8fc2c411b6fead4b9e34f83d914d980c9c530477f74b31"},"schema_version":"1.0","source":{"id":"1401.1510","kind":"arxiv","version":1}},"canonical_sha256":"7a8c1fa97730a0ed591e8aa0fdf48e540ed01b03ad420f73a0c88e32ef0355cf","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"7a8c1fa97730a0ed591e8aa0fdf48e540ed01b03ad420f73a0c88e32ef0355cf","first_computed_at":"2026-05-18T01:45:33.103531Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:45:33.103531Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"HnQ+K6KIhQCGjZcTeIL1Z+gWENQ7/QFWav0EXSyk470QDlsSdyZKiIXhcxdWzeyOzkbluzS7wxESHJGYUwANAg==","signature_status":"signed_v1","signed_at":"2026-05-18T01:45:33.104051Z","signed_message":"canonical_sha256_bytes"},"source_id":"1401.1510","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:a18e1407154b479405da5d9ea4c695d84ab00f200876f3e85bfca8ea69ec7b30","sha256:6360786907274bba9dc5ca1a948d0a25c6d42e7eaee1d04ee9b7f00eccba394f"],"state_sha256":"4410d3d37bc55f054cb6af71c391807d4f0944a0be4e2b5f5dc4197c44faff12"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"X1w+6MRK+y8ZbwLDPRS+bHTBomPHmebwEOHwXZJMrfs3APtSbhhjSbRuVHMR9tGjg65zv+WJwk2zLo5shpApBg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-19T09:03:10.416568Z","bundle_sha256":"469db3ee0c6929c93fd4e819db710e761975ff20f66723a278a80989420c4fc3"}}