{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2013:G2DJTYP2Y4RWKAUJX6KMVYHE3G","short_pith_number":"pith:G2DJTYP2","canonical_record":{"source":{"id":"1309.4087","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2013-09-16T20:00:00Z","cross_cats_sorted":[],"title_canon_sha256":"72d01674841e8d47a2d048119777f9eee049b1c7912d7b87c905a9ba000b5ece","abstract_canon_sha256":"b65e03dd81291bc347a457e171de841d6be0cc0c6bea016c5cfee02203645ff1"},"schema_version":"1.0"},"canonical_sha256":"368699e1fac723650289bf94cae0e4d99389a2a572906d40881d5691c0c6d24b","source":{"kind":"arxiv","id":"1309.4087","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1309.4087","created_at":"2026-05-18T02:58:45Z"},{"alias_kind":"arxiv_version","alias_value":"1309.4087v1","created_at":"2026-05-18T02:58:45Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1309.4087","created_at":"2026-05-18T02:58:45Z"},{"alias_kind":"pith_short_12","alias_value":"G2DJTYP2Y4RW","created_at":"2026-05-18T12:27:45Z"},{"alias_kind":"pith_short_16","alias_value":"G2DJTYP2Y4RWKAUJ","created_at":"2026-05-18T12:27:45Z"},{"alias_kind":"pith_short_8","alias_value":"G2DJTYP2","created_at":"2026-05-18T12:27:45Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2013:G2DJTYP2Y4RWKAUJX6KMVYHE3G","target":"record","payload":{"canonical_record":{"source":{"id":"1309.4087","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2013-09-16T20:00:00Z","cross_cats_sorted":[],"title_canon_sha256":"72d01674841e8d47a2d048119777f9eee049b1c7912d7b87c905a9ba000b5ece","abstract_canon_sha256":"b65e03dd81291bc347a457e171de841d6be0cc0c6bea016c5cfee02203645ff1"},"schema_version":"1.0"},"canonical_sha256":"368699e1fac723650289bf94cae0e4d99389a2a572906d40881d5691c0c6d24b","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:58:45.719787Z","signature_b64":"kwftC3w1DbLTaqLWvDlGIC1fV+9oPOnhJgd2Q0RI1bvA7/F6agcBF0fDbJdzqKsexnCIjh1Szf//KE4JhMZYBQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"368699e1fac723650289bf94cae0e4d99389a2a572906d40881d5691c0c6d24b","last_reissued_at":"2026-05-18T02:58:45.719014Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:58:45.719014Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1309.4087","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":"2026-05-18T02:58:45Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Cc26LqaGGO6LfwT3zVAd365JZHS1ygwteDGGWL5RYIJ0yKNHqOUkWpJfrDRH33NSzacHvBWj2P6cBtLakjVsAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T20:01:06.967642Z"},"content_sha256":"852dc8bb7437e23dd08e5559a231b849132f7be75e49d386d695db1250418078","schema_version":"1.0","event_id":"sha256:852dc8bb7437e23dd08e5559a231b849132f7be75e49d386d695db1250418078"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2013:G2DJTYP2Y4RWKAUJX6KMVYHE3G","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Direct Detection of SDSS J0926+3624 Orbital Expansion with ARCONS","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"A. B. Walter, B. A. Mazin, B. Bumble, C. Stoughton, D. Marsden, G. E. Duggan, G. Ulbricht, J. C. van Eyken, K. O'Brien, M. J. Strader, P. Szypryt, S. R. Meeker, T. A. Prince","submitted_at":"2013-09-16T20:00:00Z","abstract_excerpt":"AM Canum Venaticorum (AM CVn) stars belong to a class of ultra-compact, short period binaries with spectra dominated largely by helium. SDSS J0926+3624 is of particular interest as it is the first observed eclipsing AM CVn system. We observed SDSS J0926+3624 with the \\textbf{Ar}ray \\textbf{C}amera for \\textbf{O}ptical to \\textbf{N}ear-IR \\textbf{S}pectrophotometry (ARCONS) at the Palomar 200\" telescope. ARCONS uses a relatively new type of energy-resolved photon counters called Microwave Kinetic Inductance Detectors (MKIDs). ARCONS, sensitive to radiation from 350 to 1100 nm, has a time resolu"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1309.4087","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":"2026-05-18T02:58:45Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"+91lj8EFsxOpio61475Rq1tnz1W0TsJjXpVYA4ro3tzp4qMNaSCjQV4nhf91w+WE+cMmjU4RUOg5XI/ziMqBAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T20:01:06.968327Z"},"content_sha256":"70b2fb1a937f2b3aede661ce20397ade67a2ebd71be6bfd0cec4684aee1bb674","schema_version":"1.0","event_id":"sha256:70b2fb1a937f2b3aede661ce20397ade67a2ebd71be6bfd0cec4684aee1bb674"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/G2DJTYP2Y4RWKAUJX6KMVYHE3G/bundle.json","state_url":"https://pith.science/pith/G2DJTYP2Y4RWKAUJX6KMVYHE3G/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/G2DJTYP2Y4RWKAUJX6KMVYHE3G/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":"2026-05-26T20:01:06Z","links":{"resolver":"https://pith.science/pith/G2DJTYP2Y4RWKAUJX6KMVYHE3G","bundle":"https://pith.science/pith/G2DJTYP2Y4RWKAUJX6KMVYHE3G/bundle.json","state":"https://pith.science/pith/G2DJTYP2Y4RWKAUJX6KMVYHE3G/state.json","well_known_bundle":"https://pith.science/.well-known/pith/G2DJTYP2Y4RWKAUJX6KMVYHE3G/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:G2DJTYP2Y4RWKAUJX6KMVYHE3G","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":"b65e03dd81291bc347a457e171de841d6be0cc0c6bea016c5cfee02203645ff1","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2013-09-16T20:00:00Z","title_canon_sha256":"72d01674841e8d47a2d048119777f9eee049b1c7912d7b87c905a9ba000b5ece"},"schema_version":"1.0","source":{"id":"1309.4087","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1309.4087","created_at":"2026-05-18T02:58:45Z"},{"alias_kind":"arxiv_version","alias_value":"1309.4087v1","created_at":"2026-05-18T02:58:45Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1309.4087","created_at":"2026-05-18T02:58:45Z"},{"alias_kind":"pith_short_12","alias_value":"G2DJTYP2Y4RW","created_at":"2026-05-18T12:27:45Z"},{"alias_kind":"pith_short_16","alias_value":"G2DJTYP2Y4RWKAUJ","created_at":"2026-05-18T12:27:45Z"},{"alias_kind":"pith_short_8","alias_value":"G2DJTYP2","created_at":"2026-05-18T12:27:45Z"}],"graph_snapshots":[{"event_id":"sha256:70b2fb1a937f2b3aede661ce20397ade67a2ebd71be6bfd0cec4684aee1bb674","target":"graph","created_at":"2026-05-18T02:58:45Z","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":"AM Canum Venaticorum (AM CVn) stars belong to a class of ultra-compact, short period binaries with spectra dominated largely by helium. SDSS J0926+3624 is of particular interest as it is the first observed eclipsing AM CVn system. We observed SDSS J0926+3624 with the \\textbf{Ar}ray \\textbf{C}amera for \\textbf{O}ptical to \\textbf{N}ear-IR \\textbf{S}pectrophotometry (ARCONS) at the Palomar 200\" telescope. ARCONS uses a relatively new type of energy-resolved photon counters called Microwave Kinetic Inductance Detectors (MKIDs). ARCONS, sensitive to radiation from 350 to 1100 nm, has a time resolu","authors_text":"A. B. Walter, B. A. Mazin, B. Bumble, C. Stoughton, D. Marsden, G. E. Duggan, G. Ulbricht, J. C. van Eyken, K. O'Brien, M. J. Strader, P. Szypryt, S. R. Meeker, T. A. Prince","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2013-09-16T20:00:00Z","title":"Direct Detection of SDSS J0926+3624 Orbital Expansion with ARCONS"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1309.4087","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":"sha256:852dc8bb7437e23dd08e5559a231b849132f7be75e49d386d695db1250418078","target":"record","created_at":"2026-05-18T02:58:45Z","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":"b65e03dd81291bc347a457e171de841d6be0cc0c6bea016c5cfee02203645ff1","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2013-09-16T20:00:00Z","title_canon_sha256":"72d01674841e8d47a2d048119777f9eee049b1c7912d7b87c905a9ba000b5ece"},"schema_version":"1.0","source":{"id":"1309.4087","kind":"arxiv","version":1}},"canonical_sha256":"368699e1fac723650289bf94cae0e4d99389a2a572906d40881d5691c0c6d24b","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"368699e1fac723650289bf94cae0e4d99389a2a572906d40881d5691c0c6d24b","first_computed_at":"2026-05-18T02:58:45.719014Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:58:45.719014Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"kwftC3w1DbLTaqLWvDlGIC1fV+9oPOnhJgd2Q0RI1bvA7/F6agcBF0fDbJdzqKsexnCIjh1Szf//KE4JhMZYBQ==","signature_status":"signed_v1","signed_at":"2026-05-18T02:58:45.719787Z","signed_message":"canonical_sha256_bytes"},"source_id":"1309.4087","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:852dc8bb7437e23dd08e5559a231b849132f7be75e49d386d695db1250418078","sha256:70b2fb1a937f2b3aede661ce20397ade67a2ebd71be6bfd0cec4684aee1bb674"],"state_sha256":"5d33b9c2aad8131904316bac461134d88ec848b47f8f56a395db814b0c7e995f"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"eWl7bUKDzBBhY0qMF6shff1hn/F70EMcBBXxfSjZ9v4B1dZLj0/GpJm5As2x1lpNAY94DyJ34hJoP+63gKm8Dw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-26T20:01:06.971396Z","bundle_sha256":"737c18f668431c0fd2e6f50458db797137c914f07bf637821f9ecfaaecbba881"}}