{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2015:FQFFCHW3NWYC3M3GUVSOVZQUJY","short_pith_number":"pith:FQFFCHW3","canonical_record":{"source":{"id":"1507.07564","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2015-07-27T20:00:58Z","cross_cats_sorted":[],"title_canon_sha256":"7c88a7c409a7a1933d7ac23d558a3bb5a06bfa409317ac5adc9ed8d30ed837c7","abstract_canon_sha256":"fbd6171a85641c841f6f5275d3e53584f0cd6f29f26c7a7f30bbef955b624d8e"},"schema_version":"1.0"},"canonical_sha256":"2c0a511edb6db02db366a564eae6144e2c08d76b1f6437697d5ad7d759278207","source":{"kind":"arxiv","id":"1507.07564","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1507.07564","created_at":"2026-05-18T01:28:03Z"},{"alias_kind":"arxiv_version","alias_value":"1507.07564v2","created_at":"2026-05-18T01:28:03Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1507.07564","created_at":"2026-05-18T01:28:03Z"},{"alias_kind":"pith_short_12","alias_value":"FQFFCHW3NWYC","created_at":"2026-05-18T12:29:19Z"},{"alias_kind":"pith_short_16","alias_value":"FQFFCHW3NWYC3M3G","created_at":"2026-05-18T12:29:19Z"},{"alias_kind":"pith_short_8","alias_value":"FQFFCHW3","created_at":"2026-05-18T12:29:19Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2015:FQFFCHW3NWYC3M3GUVSOVZQUJY","target":"record","payload":{"canonical_record":{"source":{"id":"1507.07564","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2015-07-27T20:00:58Z","cross_cats_sorted":[],"title_canon_sha256":"7c88a7c409a7a1933d7ac23d558a3bb5a06bfa409317ac5adc9ed8d30ed837c7","abstract_canon_sha256":"fbd6171a85641c841f6f5275d3e53584f0cd6f29f26c7a7f30bbef955b624d8e"},"schema_version":"1.0"},"canonical_sha256":"2c0a511edb6db02db366a564eae6144e2c08d76b1f6437697d5ad7d759278207","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:28:03.845811Z","signature_b64":"OGO78jL2PuO6zefMJEgoV9W84HV7gw7+MOkc/PunFBozOeK/YwiPxR8e6bRWLad67ed4W6kAbdMZhURCS7jwAg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"2c0a511edb6db02db366a564eae6144e2c08d76b1f6437697d5ad7d759278207","last_reissued_at":"2026-05-18T01:28:03.845052Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:28:03.845052Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1507.07564","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":"2026-05-18T01:28:03Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"l03VG7Gz2zutbgouzSYuFDQA9wJHFy6l28fnPrsWlroBC0Kl3FYYaw24XTA10qftccRKMIM2p1z2y6zADE7TBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-06T14:25:48.493455Z"},"content_sha256":"b2d90b53e65cfef3e352c52a30e60ec024e0f12c244d684fccc40bba98eaf297","schema_version":"1.0","event_id":"sha256:b2d90b53e65cfef3e352c52a30e60ec024e0f12c244d684fccc40bba98eaf297"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2015:FQFFCHW3NWYC3M3GUVSOVZQUJY","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Sagittarius II, Draco II and Laevens 3: three new Milky Way satellites discovered in the Pan-STARRS 1 3pi Survey","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"Annette M. N. Ferguson, Avon P. Huxor, Benjamin P. M. Laevens, Branimir Sesar, Christopher Waters, Colin T. Slater, Edouard J. Bernard, Edward F. Schlafly, Eric F. Bell, Eugene A. Magnier, Hans-Walter Rix, John L. Tonry, Kenneth C. Chambers, Nicolas F. Martin, Nigel Metcalfe, Peter W. Draper, Richard J. Wainscoat, Rosemary F. G. Wyse, William E. Sweeney, William S. Burgett","submitted_at":"2015-07-27T20:00:58Z","abstract_excerpt":"We present the discovery of three new Milky Way satellites from our search for compact stellar overdensities in the photometric catalog of the Panoramic Survey Telescope and Rapid Response System 1 (Pan-STARRS 1, or PS1) 3pi survey. The first satellite, Laevens 3, is located at a heliocentric distance of d=67+/-3 kpc. With a total magnitude of Mv=-4.4+/-0.3 and a half-light radius rh=7+/-2 pc, its properties resemble those of outer halo globular clusters. The second system, Draco II/Laevens 4 (Dra II), is a closer and fainter satellite (d~20 kpc, Mv =-2.9+/-0.8), whose uncertain size (rh = 19 "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1507.07564","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":"2026-05-18T01:28:03Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"hS0tr16soI0p+T5X73PoMuELjNWQifSCUyNyUMUvY6+I5YSEgLevHff735eUmpH0QdYrigazK9d3fUOex361Dg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-06T14:25:48.494152Z"},"content_sha256":"7a4521f597e6b92ad6dc7defe5e30a8637463f8315fc856f9502ce009df539f0","schema_version":"1.0","event_id":"sha256:7a4521f597e6b92ad6dc7defe5e30a8637463f8315fc856f9502ce009df539f0"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/FQFFCHW3NWYC3M3GUVSOVZQUJY/bundle.json","state_url":"https://pith.science/pith/FQFFCHW3NWYC3M3GUVSOVZQUJY/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/FQFFCHW3NWYC3M3GUVSOVZQUJY/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":"2026-06-06T14:25:48Z","links":{"resolver":"https://pith.science/pith/FQFFCHW3NWYC3M3GUVSOVZQUJY","bundle":"https://pith.science/pith/FQFFCHW3NWYC3M3GUVSOVZQUJY/bundle.json","state":"https://pith.science/pith/FQFFCHW3NWYC3M3GUVSOVZQUJY/state.json","well_known_bundle":"https://pith.science/.well-known/pith/FQFFCHW3NWYC3M3GUVSOVZQUJY/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:FQFFCHW3NWYC3M3GUVSOVZQUJY","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":"fbd6171a85641c841f6f5275d3e53584f0cd6f29f26c7a7f30bbef955b624d8e","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2015-07-27T20:00:58Z","title_canon_sha256":"7c88a7c409a7a1933d7ac23d558a3bb5a06bfa409317ac5adc9ed8d30ed837c7"},"schema_version":"1.0","source":{"id":"1507.07564","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1507.07564","created_at":"2026-05-18T01:28:03Z"},{"alias_kind":"arxiv_version","alias_value":"1507.07564v2","created_at":"2026-05-18T01:28:03Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1507.07564","created_at":"2026-05-18T01:28:03Z"},{"alias_kind":"pith_short_12","alias_value":"FQFFCHW3NWYC","created_at":"2026-05-18T12:29:19Z"},{"alias_kind":"pith_short_16","alias_value":"FQFFCHW3NWYC3M3G","created_at":"2026-05-18T12:29:19Z"},{"alias_kind":"pith_short_8","alias_value":"FQFFCHW3","created_at":"2026-05-18T12:29:19Z"}],"graph_snapshots":[{"event_id":"sha256:7a4521f597e6b92ad6dc7defe5e30a8637463f8315fc856f9502ce009df539f0","target":"graph","created_at":"2026-05-18T01:28:03Z","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 discovery of three new Milky Way satellites from our search for compact stellar overdensities in the photometric catalog of the Panoramic Survey Telescope and Rapid Response System 1 (Pan-STARRS 1, or PS1) 3pi survey. The first satellite, Laevens 3, is located at a heliocentric distance of d=67+/-3 kpc. With a total magnitude of Mv=-4.4+/-0.3 and a half-light radius rh=7+/-2 pc, its properties resemble those of outer halo globular clusters. The second system, Draco II/Laevens 4 (Dra II), is a closer and fainter satellite (d~20 kpc, Mv =-2.9+/-0.8), whose uncertain size (rh = 19 ","authors_text":"Annette M. N. Ferguson, Avon P. Huxor, Benjamin P. M. Laevens, Branimir Sesar, Christopher Waters, Colin T. Slater, Edouard J. Bernard, Edward F. Schlafly, Eric F. Bell, Eugene A. Magnier, Hans-Walter Rix, John L. Tonry, Kenneth C. Chambers, Nicolas F. Martin, Nigel Metcalfe, Peter W. Draper, Richard J. Wainscoat, Rosemary F. G. Wyse, William E. Sweeney, William S. Burgett","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2015-07-27T20:00:58Z","title":"Sagittarius II, Draco II and Laevens 3: three new Milky Way satellites discovered in the Pan-STARRS 1 3pi Survey"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1507.07564","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:b2d90b53e65cfef3e352c52a30e60ec024e0f12c244d684fccc40bba98eaf297","target":"record","created_at":"2026-05-18T01:28:03Z","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":"fbd6171a85641c841f6f5275d3e53584f0cd6f29f26c7a7f30bbef955b624d8e","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2015-07-27T20:00:58Z","title_canon_sha256":"7c88a7c409a7a1933d7ac23d558a3bb5a06bfa409317ac5adc9ed8d30ed837c7"},"schema_version":"1.0","source":{"id":"1507.07564","kind":"arxiv","version":2}},"canonical_sha256":"2c0a511edb6db02db366a564eae6144e2c08d76b1f6437697d5ad7d759278207","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"2c0a511edb6db02db366a564eae6144e2c08d76b1f6437697d5ad7d759278207","first_computed_at":"2026-05-18T01:28:03.845052Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:28:03.845052Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"OGO78jL2PuO6zefMJEgoV9W84HV7gw7+MOkc/PunFBozOeK/YwiPxR8e6bRWLad67ed4W6kAbdMZhURCS7jwAg==","signature_status":"signed_v1","signed_at":"2026-05-18T01:28:03.845811Z","signed_message":"canonical_sha256_bytes"},"source_id":"1507.07564","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:b2d90b53e65cfef3e352c52a30e60ec024e0f12c244d684fccc40bba98eaf297","sha256:7a4521f597e6b92ad6dc7defe5e30a8637463f8315fc856f9502ce009df539f0"],"state_sha256":"c442ac76045a0eb23e38bb900755deac61611e2b00badc21e9b47b5adc14079e"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"O2F360qhiV+fG5N2Vq0+u4NIEuAOW1/seFro69xq+1S8lYUUDEF5dPtv8TLaIJinXAxxdoAEB+RtNPXOsLw+Bw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-06T14:25:48.498214Z","bundle_sha256":"dbbce73cefd7a69963a7a27dc911e40d291573b1ffaecde8d7490df37476bd23"}}