{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2026:MXHPG3JOS2VFNMH2XVKFO7DSSH","short_pith_number":"pith:MXHPG3JO","canonical_record":{"source":{"id":"2606.28489","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.GA","submitted_at":"2026-06-26T18:00:02Z","cross_cats_sorted":["astro-ph.CO"],"title_canon_sha256":"0d49062c9cd56af88a5c90b5636f6b4d47f784bcfe9249fad502bd0b27b5eb28","abstract_canon_sha256":"214b05a2a2ecd3ea1ac9f4ec2436b9bb78e877456449a51c1f8daedb40d7dafe"},"schema_version":"1.0"},"canonical_sha256":"65cef36d2e96aa56b0fabd54577c7291dea196e9029228c4cb18196e4c611d01","source":{"kind":"arxiv","id":"2606.28489","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2606.28489","created_at":"2026-06-30T00:15:15Z"},{"alias_kind":"arxiv_version","alias_value":"2606.28489v1","created_at":"2026-06-30T00:15:15Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2606.28489","created_at":"2026-06-30T00:15:15Z"},{"alias_kind":"pith_short_12","alias_value":"MXHPG3JOS2VF","created_at":"2026-06-30T00:15:15Z"},{"alias_kind":"pith_short_16","alias_value":"MXHPG3JOS2VFNMH2","created_at":"2026-06-30T00:15:15Z"},{"alias_kind":"pith_short_8","alias_value":"MXHPG3JO","created_at":"2026-06-30T00:15:15Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2026:MXHPG3JOS2VFNMH2XVKFO7DSSH","target":"record","payload":{"canonical_record":{"source":{"id":"2606.28489","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.GA","submitted_at":"2026-06-26T18:00:02Z","cross_cats_sorted":["astro-ph.CO"],"title_canon_sha256":"0d49062c9cd56af88a5c90b5636f6b4d47f784bcfe9249fad502bd0b27b5eb28","abstract_canon_sha256":"214b05a2a2ecd3ea1ac9f4ec2436b9bb78e877456449a51c1f8daedb40d7dafe"},"schema_version":"1.0"},"canonical_sha256":"65cef36d2e96aa56b0fabd54577c7291dea196e9029228c4cb18196e4c611d01","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-06-30T00:15:15.722396Z","signature_b64":"t8Mk6mffH7r0j3ViiDkwPodgvOHfQs4BTAJe+VqvYp+AbOkQpdUdRg7XX52M+PWaYJQli594BSw6nhJfR2f1AA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"65cef36d2e96aa56b0fabd54577c7291dea196e9029228c4cb18196e4c611d01","last_reissued_at":"2026-06-30T00:15:15.721785Z","signature_status":"signed_v1","first_computed_at":"2026-06-30T00:15:15.721785Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2606.28489","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":"2026-06-30T00:15:15Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"eNSQoJOuet47Cd+WDk8GYzAZmw3aPkMd7znmp1D/Xr7e4IJKZqCk42BOlAqMQmPDkokalXbdP/Nb1abb7xYZBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-30T05:31:32.521529Z"},"content_sha256":"c7e046749b75a705f48c856cc2524355e74777a7a641d15682ea527f0ae76b37","schema_version":"1.0","event_id":"sha256:c7e046749b75a705f48c856cc2524355e74777a7a641d15682ea527f0ae76b37"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2026:MXHPG3JOS2VFNMH2XVKFO7DSSH","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"pop-cosmos: Galaxy size evolution across structural and star-formation classifications in COSMOS-Web","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["astro-ph.CO"],"primary_cat":"astro-ph.GA","authors_text":"Anik Halder, Benedict Van den Bussche, Boris Leistedt, Daniel J. Mortlock, Gurjeet Jagwani, Hiranya V. Peiris, Joel Leja, Madalina N. Tudorache, Sinan Deger, Stephen Thorp","submitted_at":"2026-06-26T18:00:02Z","abstract_excerpt":"Galaxy sizes are correlated with stellar mass and redshift, as characterised by size scaling relations. The inferred forms of these scaling relations are sensitive to how galaxies are classified -- either by their star formation activity (e.g. specific star-formation rate, sSFR) or by their morphology markers (e.g. bulge-to-total ratio, S\\'{e}rsic index). We combine stellar mass and sSFR estimates from pop-cosmos (a generative model trained on COSMOS2020 Spitzer IRAC $\\textit{Ch.1} <26$) with size and morphology measurements from COSMOS-Web, obtaining $99,369$ galaxies. By investigating the si"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2606.28489","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2606.28489/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":"2026-06-30T00:15:15Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"XkhTif2J9Q5+yFW4r5Wry1h3hwcEoTSignofKCIaHW9GCfAZ8KejxtAhH9SwhNguhUK/q08TszZzT/HFCUsZBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-30T05:31:32.521921Z"},"content_sha256":"1ed5b19a87c94774c3488601ff181503cdee6461989dc7dd8aca029e0ff10f10","schema_version":"1.0","event_id":"sha256:1ed5b19a87c94774c3488601ff181503cdee6461989dc7dd8aca029e0ff10f10"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/MXHPG3JOS2VFNMH2XVKFO7DSSH/bundle.json","state_url":"https://pith.science/pith/MXHPG3JOS2VFNMH2XVKFO7DSSH/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/MXHPG3JOS2VFNMH2XVKFO7DSSH/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":"2026-06-30T05:31:32Z","links":{"resolver":"https://pith.science/pith/MXHPG3JOS2VFNMH2XVKFO7DSSH","bundle":"https://pith.science/pith/MXHPG3JOS2VFNMH2XVKFO7DSSH/bundle.json","state":"https://pith.science/pith/MXHPG3JOS2VFNMH2XVKFO7DSSH/state.json","well_known_bundle":"https://pith.science/.well-known/pith/MXHPG3JOS2VFNMH2XVKFO7DSSH/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2026:MXHPG3JOS2VFNMH2XVKFO7DSSH","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":"214b05a2a2ecd3ea1ac9f4ec2436b9bb78e877456449a51c1f8daedb40d7dafe","cross_cats_sorted":["astro-ph.CO"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.GA","submitted_at":"2026-06-26T18:00:02Z","title_canon_sha256":"0d49062c9cd56af88a5c90b5636f6b4d47f784bcfe9249fad502bd0b27b5eb28"},"schema_version":"1.0","source":{"id":"2606.28489","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2606.28489","created_at":"2026-06-30T00:15:15Z"},{"alias_kind":"arxiv_version","alias_value":"2606.28489v1","created_at":"2026-06-30T00:15:15Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2606.28489","created_at":"2026-06-30T00:15:15Z"},{"alias_kind":"pith_short_12","alias_value":"MXHPG3JOS2VF","created_at":"2026-06-30T00:15:15Z"},{"alias_kind":"pith_short_16","alias_value":"MXHPG3JOS2VFNMH2","created_at":"2026-06-30T00:15:15Z"},{"alias_kind":"pith_short_8","alias_value":"MXHPG3JO","created_at":"2026-06-30T00:15:15Z"}],"graph_snapshots":[{"event_id":"sha256:1ed5b19a87c94774c3488601ff181503cdee6461989dc7dd8aca029e0ff10f10","target":"graph","created_at":"2026-06-30T00:15:15Z","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/2606.28489/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Galaxy sizes are correlated with stellar mass and redshift, as characterised by size scaling relations. The inferred forms of these scaling relations are sensitive to how galaxies are classified -- either by their star formation activity (e.g. specific star-formation rate, sSFR) or by their morphology markers (e.g. bulge-to-total ratio, S\\'{e}rsic index). We combine stellar mass and sSFR estimates from pop-cosmos (a generative model trained on COSMOS2020 Spitzer IRAC $\\textit{Ch.1} <26$) with size and morphology measurements from COSMOS-Web, obtaining $99,369$ galaxies. By investigating the si","authors_text":"Anik Halder, Benedict Van den Bussche, Boris Leistedt, Daniel J. Mortlock, Gurjeet Jagwani, Hiranya V. Peiris, Joel Leja, Madalina N. Tudorache, Sinan Deger, Stephen Thorp","cross_cats":["astro-ph.CO"],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.GA","submitted_at":"2026-06-26T18:00:02Z","title":"pop-cosmos: Galaxy size evolution across structural and star-formation classifications in COSMOS-Web"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2606.28489","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:c7e046749b75a705f48c856cc2524355e74777a7a641d15682ea527f0ae76b37","target":"record","created_at":"2026-06-30T00:15:15Z","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":"214b05a2a2ecd3ea1ac9f4ec2436b9bb78e877456449a51c1f8daedb40d7dafe","cross_cats_sorted":["astro-ph.CO"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.GA","submitted_at":"2026-06-26T18:00:02Z","title_canon_sha256":"0d49062c9cd56af88a5c90b5636f6b4d47f784bcfe9249fad502bd0b27b5eb28"},"schema_version":"1.0","source":{"id":"2606.28489","kind":"arxiv","version":1}},"canonical_sha256":"65cef36d2e96aa56b0fabd54577c7291dea196e9029228c4cb18196e4c611d01","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"65cef36d2e96aa56b0fabd54577c7291dea196e9029228c4cb18196e4c611d01","first_computed_at":"2026-06-30T00:15:15.721785Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-06-30T00:15:15.721785Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"t8Mk6mffH7r0j3ViiDkwPodgvOHfQs4BTAJe+VqvYp+AbOkQpdUdRg7XX52M+PWaYJQli594BSw6nhJfR2f1AA==","signature_status":"signed_v1","signed_at":"2026-06-30T00:15:15.722396Z","signed_message":"canonical_sha256_bytes"},"source_id":"2606.28489","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:c7e046749b75a705f48c856cc2524355e74777a7a641d15682ea527f0ae76b37","sha256:1ed5b19a87c94774c3488601ff181503cdee6461989dc7dd8aca029e0ff10f10"],"state_sha256":"f40e5d20dfff53ddb4af903249428f920ba7ad5b82293282dfe64d759d07af0d"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"uE9WFDciRV1W6eQhyZXBfB6Vn7ewrpZQtCOTBQaumD/tKyCwlVpgGn2VsOj5MDQdxLRLCiyVwN2k+TY4IYiGAg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-30T05:31:32.524753Z","bundle_sha256":"7e6d57b786716469bc50fda90c16748ca908290c8a10c6f7d72e691e3504aebf"}}