{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2011:XPUIHLQ3SIW4ID5C3IXEYNKZ7W","short_pith_number":"pith:XPUIHLQ3","canonical_record":{"source":{"id":"1109.0019","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2011-08-31T20:06:41Z","cross_cats_sorted":["astro-ph.CO"],"title_canon_sha256":"afd28e4aa3a708d74fccd23fa92f043d5a528fa5799282694293be3bd39ed75a","abstract_canon_sha256":"f170665bbd98f0ec34d5f10872fb66a188bd5c867c03028327c922121ad73a26"},"schema_version":"1.0"},"canonical_sha256":"bbe883ae1b922dc40fa2da2e4c3559fdbe1882782ea36e647c5307d4aea6e3bc","source":{"kind":"arxiv","id":"1109.0019","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1109.0019","created_at":"2026-05-18T02:00:43Z"},{"alias_kind":"arxiv_version","alias_value":"1109.0019v2","created_at":"2026-05-18T02:00:43Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1109.0019","created_at":"2026-05-18T02:00:43Z"},{"alias_kind":"pith_short_12","alias_value":"XPUIHLQ3SIW4","created_at":"2026-05-18T12:26:47Z"},{"alias_kind":"pith_short_16","alias_value":"XPUIHLQ3SIW4ID5C","created_at":"2026-05-18T12:26:47Z"},{"alias_kind":"pith_short_8","alias_value":"XPUIHLQ3","created_at":"2026-05-18T12:26:47Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2011:XPUIHLQ3SIW4ID5C3IXEYNKZ7W","target":"record","payload":{"canonical_record":{"source":{"id":"1109.0019","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2011-08-31T20:06:41Z","cross_cats_sorted":["astro-ph.CO"],"title_canon_sha256":"afd28e4aa3a708d74fccd23fa92f043d5a528fa5799282694293be3bd39ed75a","abstract_canon_sha256":"f170665bbd98f0ec34d5f10872fb66a188bd5c867c03028327c922121ad73a26"},"schema_version":"1.0"},"canonical_sha256":"bbe883ae1b922dc40fa2da2e4c3559fdbe1882782ea36e647c5307d4aea6e3bc","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:00:43.712978Z","signature_b64":"2t8PrGcHuJ2oKAAlcIVEAyv4jlHkfUBEiOk9Y8ms9471OY7Il+9qL+NtIMiznVPEDxR3UEIUplHVAPBQGsNOBw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"bbe883ae1b922dc40fa2da2e4c3559fdbe1882782ea36e647c5307d4aea6e3bc","last_reissued_at":"2026-05-18T02:00:43.712334Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:00:43.712334Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1109.0019","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":"2026-05-18T02:00:43Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"K8I1UK+HN+Ylse+9sRLeNCIkI/KOKtQ0r4bK5uVKDEIJX66pzRf7ixqb5pJHcgqtUnBwqX2UZyTl6HIJUTPFCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-31T23:28:29.754894Z"},"content_sha256":"4d9cd442a71c75112352583d28f95786eb0c571c3d4b4bf9cca43e80f2ab886e","schema_version":"1.0","event_id":"sha256:4d9cd442a71c75112352583d28f95786eb0c571c3d4b4bf9cca43e80f2ab886e"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2011:XPUIHLQ3SIW4ID5C3IXEYNKZ7W","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"A Petal of the Sunflower: Photometry of the Stellar Tidal Stream in the Halo of Messier 63 (NGC 5055)","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.CO"],"primary_cat":"astro-ph.GA","authors_text":"David Martinez-Delgado, Gary J. Hill, Ignacio Trujillo, Ray Gralak, R. Jay Gabany, Steven R. Majewski, Taylor S. Chonis","submitted_at":"2011-08-31T20:06:41Z","abstract_excerpt":"We present surface photometry of a very faint, giant arc feature in the halo of the nearby spiral galaxy NGC 5055 (M63) that is consistent with being a part of a stellar stream resulting from the disruption of a dwarf satellite galaxy. This faint feature was first detected in early photographic studies by van der Kruit (1979); more recently by Mart\\'inez-Delgado et al. (2010) and as presented in this work, the loop has been realized to be the result of a recent minor merger through evidence obtained by deep images taken with a telescope of only 0.16 m aperture. The stellar stream is confirmed "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1109.0019","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":""},"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":"2026-05-18T02:00:43Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"xvaL5NIt++/d//GpGpbSkuhyxQ6aVAsuFVjZXM5CcKdERcJh4Hg0u6XPbaDD9FDTo8vYT7epHAWimcYCICleAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-31T23:28:29.755487Z"},"content_sha256":"2c6651a9e35cd2c734f2c77d386af5e2272fd4b6eea01050246ea9ce41957783","schema_version":"1.0","event_id":"sha256:2c6651a9e35cd2c734f2c77d386af5e2272fd4b6eea01050246ea9ce41957783"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/XPUIHLQ3SIW4ID5C3IXEYNKZ7W/bundle.json","state_url":"https://pith.science/pith/XPUIHLQ3SIW4ID5C3IXEYNKZ7W/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/XPUIHLQ3SIW4ID5C3IXEYNKZ7W/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":"2026-05-31T23:28:29Z","links":{"resolver":"https://pith.science/pith/XPUIHLQ3SIW4ID5C3IXEYNKZ7W","bundle":"https://pith.science/pith/XPUIHLQ3SIW4ID5C3IXEYNKZ7W/bundle.json","state":"https://pith.science/pith/XPUIHLQ3SIW4ID5C3IXEYNKZ7W/state.json","well_known_bundle":"https://pith.science/.well-known/pith/XPUIHLQ3SIW4ID5C3IXEYNKZ7W/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2011:XPUIHLQ3SIW4ID5C3IXEYNKZ7W","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":"f170665bbd98f0ec34d5f10872fb66a188bd5c867c03028327c922121ad73a26","cross_cats_sorted":["astro-ph.CO"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2011-08-31T20:06:41Z","title_canon_sha256":"afd28e4aa3a708d74fccd23fa92f043d5a528fa5799282694293be3bd39ed75a"},"schema_version":"1.0","source":{"id":"1109.0019","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1109.0019","created_at":"2026-05-18T02:00:43Z"},{"alias_kind":"arxiv_version","alias_value":"1109.0019v2","created_at":"2026-05-18T02:00:43Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1109.0019","created_at":"2026-05-18T02:00:43Z"},{"alias_kind":"pith_short_12","alias_value":"XPUIHLQ3SIW4","created_at":"2026-05-18T12:26:47Z"},{"alias_kind":"pith_short_16","alias_value":"XPUIHLQ3SIW4ID5C","created_at":"2026-05-18T12:26:47Z"},{"alias_kind":"pith_short_8","alias_value":"XPUIHLQ3","created_at":"2026-05-18T12:26:47Z"}],"graph_snapshots":[{"event_id":"sha256:2c6651a9e35cd2c734f2c77d386af5e2272fd4b6eea01050246ea9ce41957783","target":"graph","created_at":"2026-05-18T02:00:43Z","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":"We present surface photometry of a very faint, giant arc feature in the halo of the nearby spiral galaxy NGC 5055 (M63) that is consistent with being a part of a stellar stream resulting from the disruption of a dwarf satellite galaxy. This faint feature was first detected in early photographic studies by van der Kruit (1979); more recently by Mart\\'inez-Delgado et al. (2010) and as presented in this work, the loop has been realized to be the result of a recent minor merger through evidence obtained by deep images taken with a telescope of only 0.16 m aperture. The stellar stream is confirmed ","authors_text":"David Martinez-Delgado, Gary J. Hill, Ignacio Trujillo, Ray Gralak, R. Jay Gabany, Steven R. Majewski, Taylor S. Chonis","cross_cats":["astro-ph.CO"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2011-08-31T20:06:41Z","title":"A Petal of the Sunflower: Photometry of the Stellar Tidal Stream in the Halo of Messier 63 (NGC 5055)"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1109.0019","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":"sha256:4d9cd442a71c75112352583d28f95786eb0c571c3d4b4bf9cca43e80f2ab886e","target":"record","created_at":"2026-05-18T02:00:43Z","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":"f170665bbd98f0ec34d5f10872fb66a188bd5c867c03028327c922121ad73a26","cross_cats_sorted":["astro-ph.CO"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2011-08-31T20:06:41Z","title_canon_sha256":"afd28e4aa3a708d74fccd23fa92f043d5a528fa5799282694293be3bd39ed75a"},"schema_version":"1.0","source":{"id":"1109.0019","kind":"arxiv","version":2}},"canonical_sha256":"bbe883ae1b922dc40fa2da2e4c3559fdbe1882782ea36e647c5307d4aea6e3bc","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"bbe883ae1b922dc40fa2da2e4c3559fdbe1882782ea36e647c5307d4aea6e3bc","first_computed_at":"2026-05-18T02:00:43.712334Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:00:43.712334Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"2t8PrGcHuJ2oKAAlcIVEAyv4jlHkfUBEiOk9Y8ms9471OY7Il+9qL+NtIMiznVPEDxR3UEIUplHVAPBQGsNOBw==","signature_status":"signed_v1","signed_at":"2026-05-18T02:00:43.712978Z","signed_message":"canonical_sha256_bytes"},"source_id":"1109.0019","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:4d9cd442a71c75112352583d28f95786eb0c571c3d4b4bf9cca43e80f2ab886e","sha256:2c6651a9e35cd2c734f2c77d386af5e2272fd4b6eea01050246ea9ce41957783"],"state_sha256":"bd624afd037ae8c72c37fb504d6dd50ea09629a9463f9c103b412d1c57dd0770"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"IcyJcyI6vhI8UlryYrQV5qALQAlj+KnNBPqzBdjvuUbeuFxOgb5V9zxi4v0TIUBYYsX4E1uCsNThf18fyymbAQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-31T23:28:29.759200Z","bundle_sha256":"c66559aa28af58e750f48ac4a32b06057601aeed5c7d36c730575d513f22dbbb"}}