{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2012:BLYJLDR4R5Z4P5XAJ3SFVYTQC5","short_pith_number":"pith:BLYJLDR4","canonical_record":{"source":{"id":"1207.2115","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2012-07-09T18:13:07Z","cross_cats_sorted":["astro-ph.CO"],"title_canon_sha256":"0fa2ca7c7a6f84000644a216b03600e4f467d304fe7be875487b4993d33b17d2","abstract_canon_sha256":"5d7842fd9800fb160f04616a72553f1b245b04c8f52c5c845d0ef04a3a700827"},"schema_version":"1.0"},"canonical_sha256":"0af0958e3c8f73c7f6e04ee45ae27017597cefd723bd5b8509f5f2dc950beea8","source":{"kind":"arxiv","id":"1207.2115","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1207.2115","created_at":"2026-05-18T03:51:26Z"},{"alias_kind":"arxiv_version","alias_value":"1207.2115v1","created_at":"2026-05-18T03:51:26Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1207.2115","created_at":"2026-05-18T03:51:26Z"},{"alias_kind":"pith_short_12","alias_value":"BLYJLDR4R5Z4","created_at":"2026-05-18T12:27:01Z"},{"alias_kind":"pith_short_16","alias_value":"BLYJLDR4R5Z4P5XA","created_at":"2026-05-18T12:27:01Z"},{"alias_kind":"pith_short_8","alias_value":"BLYJLDR4","created_at":"2026-05-18T12:27:01Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2012:BLYJLDR4R5Z4P5XAJ3SFVYTQC5","target":"record","payload":{"canonical_record":{"source":{"id":"1207.2115","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2012-07-09T18:13:07Z","cross_cats_sorted":["astro-ph.CO"],"title_canon_sha256":"0fa2ca7c7a6f84000644a216b03600e4f467d304fe7be875487b4993d33b17d2","abstract_canon_sha256":"5d7842fd9800fb160f04616a72553f1b245b04c8f52c5c845d0ef04a3a700827"},"schema_version":"1.0"},"canonical_sha256":"0af0958e3c8f73c7f6e04ee45ae27017597cefd723bd5b8509f5f2dc950beea8","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:51:26.078089Z","signature_b64":"qXpYWUj3yP7iyN6F3mb1kf+8/NfasAWkjF+JcHQdUcdpwK7JS30a1b//b25aFBK5azMbn82SkmcNLOi+qPliAQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"0af0958e3c8f73c7f6e04ee45ae27017597cefd723bd5b8509f5f2dc950beea8","last_reissued_at":"2026-05-18T03:51:26.077634Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:51:26.077634Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1207.2115","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":"2026-05-18T03:51:26Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"uVO1BzhpGdzIAly4MZ4ZP8iHnusglDfj2jSOXnCisLk1SaVvOcIzrUKdznfdwYaQI+vt9JutQHT+a2Is0hZiAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-31T16:59:50.838448Z"},"content_sha256":"ad3d03fc1adea314d01cb7671f99fb533c45a3e7862479b531dee5c71a11f16d","schema_version":"1.0","event_id":"sha256:ad3d03fc1adea314d01cb7671f99fb533c45a3e7862479b531dee5c71a11f16d"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2012:BLYJLDR4R5Z4P5XAJ3SFVYTQC5","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Photometry of the Stellar Tidal Stream in the Halo of Messier 63","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, R. Jay Gabany, Steven R. Majewski, Taylor S. Chonis","submitted_at":"2012-07-09T18:13:07Z","abstract_excerpt":"We present surface photometry of a giant, low surface brightness stellar arc in the halo of the nearby spiral galaxy M63 (NGC 5055) that is consistent with being a part of a stellar stream resulting from the disruption of a dwarf satellite galaxy. Using the stream's \"great-circle\" morphology and its photometric properties, we estimate that the stream originates from the accretion of a 10^8 M_sun satellite in the last few Gyr. The B-R color of the stream's stars is consistent with Local Group dwarfs and is also similar to the outer regions of M63's disk and stellar halo within our measurement u"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1207.2115","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":"2026-05-18T03:51:26Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"qWkDRc50UtaRErt1haeCH/TajbiaFQBDVvsMvtnfJIltLylzYJbUchtM4fFfKS97u7Q85lX5Vk0eTsFRyBoKDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-31T16:59:50.839250Z"},"content_sha256":"7a913da854779eefa0773b17bfa131b662c509f2bbce117231e4e76eec519001","schema_version":"1.0","event_id":"sha256:7a913da854779eefa0773b17bfa131b662c509f2bbce117231e4e76eec519001"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/BLYJLDR4R5Z4P5XAJ3SFVYTQC5/bundle.json","state_url":"https://pith.science/pith/BLYJLDR4R5Z4P5XAJ3SFVYTQC5/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/BLYJLDR4R5Z4P5XAJ3SFVYTQC5/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":"2026-05-31T16:59:50Z","links":{"resolver":"https://pith.science/pith/BLYJLDR4R5Z4P5XAJ3SFVYTQC5","bundle":"https://pith.science/pith/BLYJLDR4R5Z4P5XAJ3SFVYTQC5/bundle.json","state":"https://pith.science/pith/BLYJLDR4R5Z4P5XAJ3SFVYTQC5/state.json","well_known_bundle":"https://pith.science/.well-known/pith/BLYJLDR4R5Z4P5XAJ3SFVYTQC5/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:BLYJLDR4R5Z4P5XAJ3SFVYTQC5","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":"5d7842fd9800fb160f04616a72553f1b245b04c8f52c5c845d0ef04a3a700827","cross_cats_sorted":["astro-ph.CO"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2012-07-09T18:13:07Z","title_canon_sha256":"0fa2ca7c7a6f84000644a216b03600e4f467d304fe7be875487b4993d33b17d2"},"schema_version":"1.0","source":{"id":"1207.2115","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1207.2115","created_at":"2026-05-18T03:51:26Z"},{"alias_kind":"arxiv_version","alias_value":"1207.2115v1","created_at":"2026-05-18T03:51:26Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1207.2115","created_at":"2026-05-18T03:51:26Z"},{"alias_kind":"pith_short_12","alias_value":"BLYJLDR4R5Z4","created_at":"2026-05-18T12:27:01Z"},{"alias_kind":"pith_short_16","alias_value":"BLYJLDR4R5Z4P5XA","created_at":"2026-05-18T12:27:01Z"},{"alias_kind":"pith_short_8","alias_value":"BLYJLDR4","created_at":"2026-05-18T12:27:01Z"}],"graph_snapshots":[{"event_id":"sha256:7a913da854779eefa0773b17bfa131b662c509f2bbce117231e4e76eec519001","target":"graph","created_at":"2026-05-18T03:51:26Z","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 giant, low surface brightness stellar arc in the halo of the nearby spiral galaxy M63 (NGC 5055) that is consistent with being a part of a stellar stream resulting from the disruption of a dwarf satellite galaxy. Using the stream's \"great-circle\" morphology and its photometric properties, we estimate that the stream originates from the accretion of a 10^8 M_sun satellite in the last few Gyr. The B-R color of the stream's stars is consistent with Local Group dwarfs and is also similar to the outer regions of M63's disk and stellar halo within our measurement u","authors_text":"David Martinez-Delgado, Gary J. Hill, Ignacio Trujillo, 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":"2012-07-09T18:13:07Z","title":"Photometry of the Stellar Tidal Stream in the Halo of Messier 63"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1207.2115","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:ad3d03fc1adea314d01cb7671f99fb533c45a3e7862479b531dee5c71a11f16d","target":"record","created_at":"2026-05-18T03:51:26Z","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":"5d7842fd9800fb160f04616a72553f1b245b04c8f52c5c845d0ef04a3a700827","cross_cats_sorted":["astro-ph.CO"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2012-07-09T18:13:07Z","title_canon_sha256":"0fa2ca7c7a6f84000644a216b03600e4f467d304fe7be875487b4993d33b17d2"},"schema_version":"1.0","source":{"id":"1207.2115","kind":"arxiv","version":1}},"canonical_sha256":"0af0958e3c8f73c7f6e04ee45ae27017597cefd723bd5b8509f5f2dc950beea8","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"0af0958e3c8f73c7f6e04ee45ae27017597cefd723bd5b8509f5f2dc950beea8","first_computed_at":"2026-05-18T03:51:26.077634Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:51:26.077634Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"qXpYWUj3yP7iyN6F3mb1kf+8/NfasAWkjF+JcHQdUcdpwK7JS30a1b//b25aFBK5azMbn82SkmcNLOi+qPliAQ==","signature_status":"signed_v1","signed_at":"2026-05-18T03:51:26.078089Z","signed_message":"canonical_sha256_bytes"},"source_id":"1207.2115","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:ad3d03fc1adea314d01cb7671f99fb533c45a3e7862479b531dee5c71a11f16d","sha256:7a913da854779eefa0773b17bfa131b662c509f2bbce117231e4e76eec519001"],"state_sha256":"2475a7300c89cd51f788f2ce16caf3c04afefc55e39d5584e7c94b19637ad4ff"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"szOyAmC+cRK/YQgBkgjqNQdp80+pT2/T+hR97lCqG9Rb9fYtYNd6jTbvooIl0YP0vLb5K5qfKtcT0K5rZBfPAA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-31T16:59:50.843081Z","bundle_sha256":"4db18486135f5857413933976c9b2bfe042faba1a500d82d249942405e6b8147"}}