{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2004:QVFFB5VIEMRH5VHIZSS553BAKV","short_pith_number":"pith:QVFFB5VI","canonical_record":{"source":{"id":"astro-ph/0401364","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2004-01-19T15:15:55Z","cross_cats_sorted":[],"title_canon_sha256":"9146ad3ec8cbd2cb9ea7b25fdbb279a01e2be3e6362efdb587cde1ab0a859bdd","abstract_canon_sha256":"333a0c1f26d5d48c00eff78f6bd0e1f2b2b801d69dabe32548145d9c97d30bc2"},"schema_version":"1.0"},"canonical_sha256":"854a50f6a823227ed4e8cca5deec20557141375ac6e1a45c94c589b021827638","source":{"kind":"arxiv","id":"astro-ph/0401364","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/0401364","created_at":"2026-07-04T16:42:52Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0401364v1","created_at":"2026-07-04T16:42:52Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0401364","created_at":"2026-07-04T16:42:52Z"},{"alias_kind":"pith_short_12","alias_value":"QVFFB5VIEMRH","created_at":"2026-07-04T16:42:52Z"},{"alias_kind":"pith_short_16","alias_value":"QVFFB5VIEMRH5VHI","created_at":"2026-07-04T16:42:52Z"},{"alias_kind":"pith_short_8","alias_value":"QVFFB5VI","created_at":"2026-07-04T16:42:52Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2004:QVFFB5VIEMRH5VHIZSS553BAKV","target":"record","payload":{"canonical_record":{"source":{"id":"astro-ph/0401364","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2004-01-19T15:15:55Z","cross_cats_sorted":[],"title_canon_sha256":"9146ad3ec8cbd2cb9ea7b25fdbb279a01e2be3e6362efdb587cde1ab0a859bdd","abstract_canon_sha256":"333a0c1f26d5d48c00eff78f6bd0e1f2b2b801d69dabe32548145d9c97d30bc2"},"schema_version":"1.0"},"canonical_sha256":"854a50f6a823227ed4e8cca5deec20557141375ac6e1a45c94c589b021827638","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-04T16:42:52.155163Z","signature_b64":"qj/DEvN6mGo22ju/2cwAS05z6eX6Dcj0XLGduQJmqFj0+CZohyrwRhvK2qQDVGGLxObMVw/9V4RL7iXKM0WNCw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"854a50f6a823227ed4e8cca5deec20557141375ac6e1a45c94c589b021827638","last_reissued_at":"2026-07-04T16:42:52.154698Z","signature_status":"signed_v1","first_computed_at":"2026-07-04T16:42:52.154698Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"astro-ph/0401364","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":"2026-07-04T16:42:52Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"+u0RocDO1Io4s+qGilxfGwCChqtj6W/xeaSqoOBjoP6rHmVQzFKNKyBd+idxjs5S9xIZh8GhVHCsGjhgCWHqDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-08T10:17:54.866414Z"},"content_sha256":"392ccb7fd12cb3371be17d2926dd1a8c2c9995fc0e2a422cdcf4d48df2d9bdea","schema_version":"1.0","event_id":"sha256:392ccb7fd12cb3371be17d2926dd1a8c2c9995fc0e2a422cdcf4d48df2d9bdea"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2004:QVFFB5VIEMRH5VHIZSS553BAKV","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Chain Galaxies in the Tadpole ACS Field","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"(2) IBM T.J. Watson Research Center, (3) Haverford College), Bruce G. Elmegreen (2), Clara M. Sheets (3) ((1) Vassar College, Debra Meloy Elmegreen (1)","submitted_at":"2004-01-19T15:15:55Z","abstract_excerpt":"Colors and magnitudes were determined for 69 chain galaxies, 58 other linear structures, 32 normal edge-on galaxies, and all of their large star formation clumps in the HST ACS field of the Tadpole galaxy. Redshifts of 0.5 to 2 are inferred from comparisons with published color-evolution models. The linear galaxies have no red nuclear bulges like the normal disk galaxies in our field, but the star formation clumps in each have about the same colors and magnitudes. Light profiles along the linear galaxies tend to be flat, unlike the exponential profiles of normal galaxies. Although the most ext"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0401364","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/astro-ph/0401364/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":"2026-07-04T16:42:52Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Y2KV/U/26ecqZUQJRDis6UKiM6lZ8aKHYdKcQoyLmjcFGBlNdXEJgSGI/yXRlm+SzKgswufD1SS4sN88kDDZCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-08T10:17:54.867022Z"},"content_sha256":"cbf3bad8a1de0b2f4d246d95ca07738098f14b5e0318f53e7f4e336b69711120","schema_version":"1.0","event_id":"sha256:cbf3bad8a1de0b2f4d246d95ca07738098f14b5e0318f53e7f4e336b69711120"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/QVFFB5VIEMRH5VHIZSS553BAKV/bundle.json","state_url":"https://pith.science/pith/QVFFB5VIEMRH5VHIZSS553BAKV/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/QVFFB5VIEMRH5VHIZSS553BAKV/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":"2026-08-08T10:17:54Z","links":{"resolver":"https://pith.science/pith/QVFFB5VIEMRH5VHIZSS553BAKV","bundle":"https://pith.science/pith/QVFFB5VIEMRH5VHIZSS553BAKV/bundle.json","state":"https://pith.science/pith/QVFFB5VIEMRH5VHIZSS553BAKV/state.json","well_known_bundle":"https://pith.science/.well-known/pith/QVFFB5VIEMRH5VHIZSS553BAKV/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2004:QVFFB5VIEMRH5VHIZSS553BAKV","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":"333a0c1f26d5d48c00eff78f6bd0e1f2b2b801d69dabe32548145d9c97d30bc2","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2004-01-19T15:15:55Z","title_canon_sha256":"9146ad3ec8cbd2cb9ea7b25fdbb279a01e2be3e6362efdb587cde1ab0a859bdd"},"schema_version":"1.0","source":{"id":"astro-ph/0401364","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/0401364","created_at":"2026-07-04T16:42:52Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0401364v1","created_at":"2026-07-04T16:42:52Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0401364","created_at":"2026-07-04T16:42:52Z"},{"alias_kind":"pith_short_12","alias_value":"QVFFB5VIEMRH","created_at":"2026-07-04T16:42:52Z"},{"alias_kind":"pith_short_16","alias_value":"QVFFB5VIEMRH5VHI","created_at":"2026-07-04T16:42:52Z"},{"alias_kind":"pith_short_8","alias_value":"QVFFB5VI","created_at":"2026-07-04T16:42:52Z"}],"graph_snapshots":[{"event_id":"sha256:cbf3bad8a1de0b2f4d246d95ca07738098f14b5e0318f53e7f4e336b69711120","target":"graph","created_at":"2026-07-04T16:42:52Z","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/astro-ph/0401364/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Colors and magnitudes were determined for 69 chain galaxies, 58 other linear structures, 32 normal edge-on galaxies, and all of their large star formation clumps in the HST ACS field of the Tadpole galaxy. Redshifts of 0.5 to 2 are inferred from comparisons with published color-evolution models. The linear galaxies have no red nuclear bulges like the normal disk galaxies in our field, but the star formation clumps in each have about the same colors and magnitudes. Light profiles along the linear galaxies tend to be flat, unlike the exponential profiles of normal galaxies. Although the most ext","authors_text":"(2) IBM T.J. Watson Research Center, (3) Haverford College), Bruce G. Elmegreen (2), Clara M. Sheets (3) ((1) Vassar College, Debra Meloy Elmegreen (1)","cross_cats":[],"headline":"","license":"","primary_cat":"astro-ph","submitted_at":"2004-01-19T15:15:55Z","title":"Chain Galaxies in the Tadpole ACS Field"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0401364","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":"sha256:392ccb7fd12cb3371be17d2926dd1a8c2c9995fc0e2a422cdcf4d48df2d9bdea","target":"record","created_at":"2026-07-04T16:42:52Z","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":"333a0c1f26d5d48c00eff78f6bd0e1f2b2b801d69dabe32548145d9c97d30bc2","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2004-01-19T15:15:55Z","title_canon_sha256":"9146ad3ec8cbd2cb9ea7b25fdbb279a01e2be3e6362efdb587cde1ab0a859bdd"},"schema_version":"1.0","source":{"id":"astro-ph/0401364","kind":"arxiv","version":1}},"canonical_sha256":"854a50f6a823227ed4e8cca5deec20557141375ac6e1a45c94c589b021827638","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"854a50f6a823227ed4e8cca5deec20557141375ac6e1a45c94c589b021827638","first_computed_at":"2026-07-04T16:42:52.154698Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T16:42:52.154698Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"qj/DEvN6mGo22ju/2cwAS05z6eX6Dcj0XLGduQJmqFj0+CZohyrwRhvK2qQDVGGLxObMVw/9V4RL7iXKM0WNCw==","signature_status":"signed_v1","signed_at":"2026-07-04T16:42:52.155163Z","signed_message":"canonical_sha256_bytes"},"source_id":"astro-ph/0401364","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:392ccb7fd12cb3371be17d2926dd1a8c2c9995fc0e2a422cdcf4d48df2d9bdea","sha256:cbf3bad8a1de0b2f4d246d95ca07738098f14b5e0318f53e7f4e336b69711120"],"state_sha256":"c026ab66515991b0ee61d292515cd3b7ebcecb35f3983a2664f16c6d4d6d0749"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"n4FpAoXKSZe2jB8iQ3UOCOYOonIzmxCKHyxFqhWXWCU8nkVcm4n3e3I0g2g1c4GKafMMpXSbBvZySpDB/N4yAA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-08T10:17:54.871191Z","bundle_sha256":"da505d3873554ff3d42b239540aac0fac156e98682ad193a44ab277b1735fbbd"}}