{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2015:LZI46ZZQHSCVILPPYD46ZB6KTE","short_pith_number":"pith:LZI46ZZQ","canonical_record":{"source":{"id":"1511.04793","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2015-11-16T01:11:54Z","cross_cats_sorted":[],"title_canon_sha256":"4c4ca3e840b7c81813f648f6f2f0b709fba720a5bddb9c2caa0af7c365e7417c","abstract_canon_sha256":"bc18b019aa2c354d4cd62fa5c5c3f1e3e8c41b00aa918977eb2738662674faaf"},"schema_version":"1.0"},"canonical_sha256":"5e51cf67303c85542defc0f9ec87ca9935f46cde537f4fdee00ed8447b220330","source":{"kind":"arxiv","id":"1511.04793","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1511.04793","created_at":"2026-05-18T01:23:54Z"},{"alias_kind":"arxiv_version","alias_value":"1511.04793v1","created_at":"2026-05-18T01:23:54Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1511.04793","created_at":"2026-05-18T01:23:54Z"},{"alias_kind":"pith_short_12","alias_value":"LZI46ZZQHSCV","created_at":"2026-05-18T12:29:29Z"},{"alias_kind":"pith_short_16","alias_value":"LZI46ZZQHSCVILPP","created_at":"2026-05-18T12:29:29Z"},{"alias_kind":"pith_short_8","alias_value":"LZI46ZZQ","created_at":"2026-05-18T12:29:29Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2015:LZI46ZZQHSCVILPPYD46ZB6KTE","target":"record","payload":{"canonical_record":{"source":{"id":"1511.04793","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2015-11-16T01:11:54Z","cross_cats_sorted":[],"title_canon_sha256":"4c4ca3e840b7c81813f648f6f2f0b709fba720a5bddb9c2caa0af7c365e7417c","abstract_canon_sha256":"bc18b019aa2c354d4cd62fa5c5c3f1e3e8c41b00aa918977eb2738662674faaf"},"schema_version":"1.0"},"canonical_sha256":"5e51cf67303c85542defc0f9ec87ca9935f46cde537f4fdee00ed8447b220330","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:23:54.178749Z","signature_b64":"Hs3lKB3igHfwWWNJGbykVxPDDSKM+vjnpVxGxarzi5h94C2oVujWLYgBLdDJJ8P7FTvtIYKcKIWCwPDGLXNeBw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"5e51cf67303c85542defc0f9ec87ca9935f46cde537f4fdee00ed8447b220330","last_reissued_at":"2026-05-18T01:23:54.178105Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:23:54.178105Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1511.04793","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":"2026-05-18T01:23:54Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"GNARop5r26fj2p0MMfbo9IwAY5XTPLaDPMiZ3793ACyvWhJboxIIUuDd/tscsdm6DwdKK474DrVdOsfu14sXDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-02T12:09:42.067648Z"},"content_sha256":"83df9c2bb62bd63bf43577b49644340e0ba7462f0b751a5446823845654fd3ef","schema_version":"1.0","event_id":"sha256:83df9c2bb62bd63bf43577b49644340e0ba7462f0b751a5446823845654fd3ef"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2015:LZI46ZZQHSCVILPPYD46ZB6KTE","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Major Substructure in the M31 Outer Halo: the East Cloud","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"A. D. Mackey, A. M. N. Ferguson, A. P. Huxor, A. R. Conn, A. W. McConnachie, B. McMonigal, G. F. Lewis, M. J. Irwin, N. F. Bate, N. F. Martin, R. A. Ibata","submitted_at":"2015-11-16T01:11:54Z","abstract_excerpt":"We present the first detailed analysis of the East Cloud, a highly disrupted diffuse stellar substructure in the outer halo of M31. The core of the substructure lies at a projected distance of $\\sim100$ kpc from the centre of M31 in the outer halo, with possible extensions reaching right into the inner halo. Using Pan-Andromeda Archaeological Survey photometry of red giant branch stars, we measure the distance, metallicity and brightness of the cloud. Using Hubble Space Telescope data, we independently measure the distance and metallicity to the two globular clusters coincident with the East C"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1511.04793","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":"2026-05-18T01:23:54Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"w8TFxIL6t1yyJFZiShQhtze2srLzemTd9QZbAnJRhWhOvUMQJ5xB55ePc0roxP/+lnrtSBX34C/zmTzkinSbCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-02T12:09:42.067986Z"},"content_sha256":"6689b92ea15358d69cf3d99ada8d80654475ecf3729e94ac1b192507ddd786df","schema_version":"1.0","event_id":"sha256:6689b92ea15358d69cf3d99ada8d80654475ecf3729e94ac1b192507ddd786df"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/LZI46ZZQHSCVILPPYD46ZB6KTE/bundle.json","state_url":"https://pith.science/pith/LZI46ZZQHSCVILPPYD46ZB6KTE/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/LZI46ZZQHSCVILPPYD46ZB6KTE/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":"2026-06-02T12:09:42Z","links":{"resolver":"https://pith.science/pith/LZI46ZZQHSCVILPPYD46ZB6KTE","bundle":"https://pith.science/pith/LZI46ZZQHSCVILPPYD46ZB6KTE/bundle.json","state":"https://pith.science/pith/LZI46ZZQHSCVILPPYD46ZB6KTE/state.json","well_known_bundle":"https://pith.science/.well-known/pith/LZI46ZZQHSCVILPPYD46ZB6KTE/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:LZI46ZZQHSCVILPPYD46ZB6KTE","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":"bc18b019aa2c354d4cd62fa5c5c3f1e3e8c41b00aa918977eb2738662674faaf","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2015-11-16T01:11:54Z","title_canon_sha256":"4c4ca3e840b7c81813f648f6f2f0b709fba720a5bddb9c2caa0af7c365e7417c"},"schema_version":"1.0","source":{"id":"1511.04793","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1511.04793","created_at":"2026-05-18T01:23:54Z"},{"alias_kind":"arxiv_version","alias_value":"1511.04793v1","created_at":"2026-05-18T01:23:54Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1511.04793","created_at":"2026-05-18T01:23:54Z"},{"alias_kind":"pith_short_12","alias_value":"LZI46ZZQHSCV","created_at":"2026-05-18T12:29:29Z"},{"alias_kind":"pith_short_16","alias_value":"LZI46ZZQHSCVILPP","created_at":"2026-05-18T12:29:29Z"},{"alias_kind":"pith_short_8","alias_value":"LZI46ZZQ","created_at":"2026-05-18T12:29:29Z"}],"graph_snapshots":[{"event_id":"sha256:6689b92ea15358d69cf3d99ada8d80654475ecf3729e94ac1b192507ddd786df","target":"graph","created_at":"2026-05-18T01:23:54Z","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 the first detailed analysis of the East Cloud, a highly disrupted diffuse stellar substructure in the outer halo of M31. The core of the substructure lies at a projected distance of $\\sim100$ kpc from the centre of M31 in the outer halo, with possible extensions reaching right into the inner halo. Using Pan-Andromeda Archaeological Survey photometry of red giant branch stars, we measure the distance, metallicity and brightness of the cloud. Using Hubble Space Telescope data, we independently measure the distance and metallicity to the two globular clusters coincident with the East C","authors_text":"A. D. Mackey, A. M. N. Ferguson, A. P. Huxor, A. R. Conn, A. W. McConnachie, B. McMonigal, G. F. Lewis, M. J. Irwin, N. F. Bate, N. F. Martin, R. A. Ibata","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2015-11-16T01:11:54Z","title":"Major Substructure in the M31 Outer Halo: the East Cloud"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1511.04793","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":"sha256:83df9c2bb62bd63bf43577b49644340e0ba7462f0b751a5446823845654fd3ef","target":"record","created_at":"2026-05-18T01:23:54Z","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":"bc18b019aa2c354d4cd62fa5c5c3f1e3e8c41b00aa918977eb2738662674faaf","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2015-11-16T01:11:54Z","title_canon_sha256":"4c4ca3e840b7c81813f648f6f2f0b709fba720a5bddb9c2caa0af7c365e7417c"},"schema_version":"1.0","source":{"id":"1511.04793","kind":"arxiv","version":1}},"canonical_sha256":"5e51cf67303c85542defc0f9ec87ca9935f46cde537f4fdee00ed8447b220330","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"5e51cf67303c85542defc0f9ec87ca9935f46cde537f4fdee00ed8447b220330","first_computed_at":"2026-05-18T01:23:54.178105Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:23:54.178105Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Hs3lKB3igHfwWWNJGbykVxPDDSKM+vjnpVxGxarzi5h94C2oVujWLYgBLdDJJ8P7FTvtIYKcKIWCwPDGLXNeBw==","signature_status":"signed_v1","signed_at":"2026-05-18T01:23:54.178749Z","signed_message":"canonical_sha256_bytes"},"source_id":"1511.04793","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:83df9c2bb62bd63bf43577b49644340e0ba7462f0b751a5446823845654fd3ef","sha256:6689b92ea15358d69cf3d99ada8d80654475ecf3729e94ac1b192507ddd786df"],"state_sha256":"9f305d7be0f8a96db4247a9a8c98ff1e2100011863fa9f6124f573c2e5ca0e27"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"31eNXN14KwLf2FZ7dX48Bbn3eLsdhJWyBbGXgOZdYRcdWOtJg+8xU4hUks8HMJgTRe9z6zmTMgzsnP/EDZYxAA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-02T12:09:42.069763Z","bundle_sha256":"608b8cbdb8a25bae5d3c019bffbcd8a42500eb0fa0bcc72dfc2c6413ae4602c7"}}