{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:ZGRQOQHIME76PLT7DFWDJ7BZIQ","short_pith_number":"pith:ZGRQOQHI","canonical_record":{"source":{"id":"1802.08257","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2018-02-22T19:00:01Z","cross_cats_sorted":["astro-ph.SR"],"title_canon_sha256":"6ca0b38cd3ce3b04f195023bd7172745e3cf4ee8d88199a66529ca97a3cba752","abstract_canon_sha256":"08a4fcc683f47af96472adab731ea8780e96ce6f1301539c49e63743654410ca"},"schema_version":"1.0"},"canonical_sha256":"c9a30740e8613fe7ae7f196c34fc39441023257e9562782a7e212da57688bda4","source":{"kind":"arxiv","id":"1802.08257","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1802.08257","created_at":"2026-05-18T00:21:05Z"},{"alias_kind":"arxiv_version","alias_value":"1802.08257v1","created_at":"2026-05-18T00:21:05Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1802.08257","created_at":"2026-05-18T00:21:05Z"},{"alias_kind":"pith_short_12","alias_value":"ZGRQOQHIME76","created_at":"2026-05-18T12:33:07Z"},{"alias_kind":"pith_short_16","alias_value":"ZGRQOQHIME76PLT7","created_at":"2026-05-18T12:33:07Z"},{"alias_kind":"pith_short_8","alias_value":"ZGRQOQHI","created_at":"2026-05-18T12:33:07Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:ZGRQOQHIME76PLT7DFWDJ7BZIQ","target":"record","payload":{"canonical_record":{"source":{"id":"1802.08257","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2018-02-22T19:00:01Z","cross_cats_sorted":["astro-ph.SR"],"title_canon_sha256":"6ca0b38cd3ce3b04f195023bd7172745e3cf4ee8d88199a66529ca97a3cba752","abstract_canon_sha256":"08a4fcc683f47af96472adab731ea8780e96ce6f1301539c49e63743654410ca"},"schema_version":"1.0"},"canonical_sha256":"c9a30740e8613fe7ae7f196c34fc39441023257e9562782a7e212da57688bda4","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:21:05.743910Z","signature_b64":"tDNO7OzzFEgJEGCayHNvgtg7plQplYAEKc5IMv0gyxUeOER8u1pjVWcD8BMYLt92UD7I3wGhk7drpwonCy6BAA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"c9a30740e8613fe7ae7f196c34fc39441023257e9562782a7e212da57688bda4","last_reissued_at":"2026-05-18T00:21:05.743249Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:21:05.743249Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1802.08257","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":"2026-05-18T00:21:05Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"DxOrmPuW363yWm7a1RnrDP957Si6aJF1C7RQvaeUNVbDOGV83QfV6WYoYSdwrLGBSDAK8HKknMkl+l3g1V3bBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-03T16:10:24.650708Z"},"content_sha256":"5e52c482be09dbfe795e2eca365f672cb86f1a3cffe2eb82adb1ab4c29fa3c29","schema_version":"1.0","event_id":"sha256:5e52c482be09dbfe795e2eca365f672cb86f1a3cffe2eb82adb1ab4c29fa3c29"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:ZGRQOQHIME76PLT7DFWDJ7BZIQ","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Detection of a Millimeter Flare From Proxima Centauri","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.SR"],"primary_cat":"astro-ph.EP","authors_text":"Adam F. Kowalski, Alycia J. Weinberger, David J. Wilner, Meredith A. MacGregor, Steven R. Cranmer","submitted_at":"2018-02-22T19:00:01Z","abstract_excerpt":"We present new analyses of ALMA 12-m and ACA observations at 233 GHz (1.3 mm) of the Proxima Centauri system with sensitivities of 9.5 and 47 $\\mu$Jy beam$^{-1}$, respectively, taken from 2017 January 21 through 2017 April 25. These analyses reveal that the star underwent a significant flaring event during one of the ACA observations on 2017 March 24. The complete event lasted for approximately 1 minute and reached a peak flux density of $100\\pm4$ mJy, nearly a factor of $1000\\times$ brighter than the star's quiescent emission. At the flare peak, the continuum emission is characterized by a st"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1802.08257","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":"2026-05-18T00:21:05Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"LwibgLxdZ7egO+VcRycjYK1VZXczO6rA/KezXUPV1Pkw19+jh01RoDnkw7BFnb7/NMgMUQNqDN4KigSCGMnICA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-03T16:10:24.651057Z"},"content_sha256":"d2f5db09967acba2192e0934a6707385418be49284a9314064580c930a77a403","schema_version":"1.0","event_id":"sha256:d2f5db09967acba2192e0934a6707385418be49284a9314064580c930a77a403"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/ZGRQOQHIME76PLT7DFWDJ7BZIQ/bundle.json","state_url":"https://pith.science/pith/ZGRQOQHIME76PLT7DFWDJ7BZIQ/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/ZGRQOQHIME76PLT7DFWDJ7BZIQ/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":"2026-06-03T16:10:24Z","links":{"resolver":"https://pith.science/pith/ZGRQOQHIME76PLT7DFWDJ7BZIQ","bundle":"https://pith.science/pith/ZGRQOQHIME76PLT7DFWDJ7BZIQ/bundle.json","state":"https://pith.science/pith/ZGRQOQHIME76PLT7DFWDJ7BZIQ/state.json","well_known_bundle":"https://pith.science/.well-known/pith/ZGRQOQHIME76PLT7DFWDJ7BZIQ/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:ZGRQOQHIME76PLT7DFWDJ7BZIQ","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":"08a4fcc683f47af96472adab731ea8780e96ce6f1301539c49e63743654410ca","cross_cats_sorted":["astro-ph.SR"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2018-02-22T19:00:01Z","title_canon_sha256":"6ca0b38cd3ce3b04f195023bd7172745e3cf4ee8d88199a66529ca97a3cba752"},"schema_version":"1.0","source":{"id":"1802.08257","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1802.08257","created_at":"2026-05-18T00:21:05Z"},{"alias_kind":"arxiv_version","alias_value":"1802.08257v1","created_at":"2026-05-18T00:21:05Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1802.08257","created_at":"2026-05-18T00:21:05Z"},{"alias_kind":"pith_short_12","alias_value":"ZGRQOQHIME76","created_at":"2026-05-18T12:33:07Z"},{"alias_kind":"pith_short_16","alias_value":"ZGRQOQHIME76PLT7","created_at":"2026-05-18T12:33:07Z"},{"alias_kind":"pith_short_8","alias_value":"ZGRQOQHI","created_at":"2026-05-18T12:33:07Z"}],"graph_snapshots":[{"event_id":"sha256:d2f5db09967acba2192e0934a6707385418be49284a9314064580c930a77a403","target":"graph","created_at":"2026-05-18T00:21:05Z","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 new analyses of ALMA 12-m and ACA observations at 233 GHz (1.3 mm) of the Proxima Centauri system with sensitivities of 9.5 and 47 $\\mu$Jy beam$^{-1}$, respectively, taken from 2017 January 21 through 2017 April 25. These analyses reveal that the star underwent a significant flaring event during one of the ACA observations on 2017 March 24. The complete event lasted for approximately 1 minute and reached a peak flux density of $100\\pm4$ mJy, nearly a factor of $1000\\times$ brighter than the star's quiescent emission. At the flare peak, the continuum emission is characterized by a st","authors_text":"Adam F. Kowalski, Alycia J. Weinberger, David J. Wilner, Meredith A. MacGregor, Steven R. Cranmer","cross_cats":["astro-ph.SR"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2018-02-22T19:00:01Z","title":"Detection of a Millimeter Flare From Proxima Centauri"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1802.08257","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":"sha256:5e52c482be09dbfe795e2eca365f672cb86f1a3cffe2eb82adb1ab4c29fa3c29","target":"record","created_at":"2026-05-18T00:21:05Z","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":"08a4fcc683f47af96472adab731ea8780e96ce6f1301539c49e63743654410ca","cross_cats_sorted":["astro-ph.SR"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2018-02-22T19:00:01Z","title_canon_sha256":"6ca0b38cd3ce3b04f195023bd7172745e3cf4ee8d88199a66529ca97a3cba752"},"schema_version":"1.0","source":{"id":"1802.08257","kind":"arxiv","version":1}},"canonical_sha256":"c9a30740e8613fe7ae7f196c34fc39441023257e9562782a7e212da57688bda4","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"c9a30740e8613fe7ae7f196c34fc39441023257e9562782a7e212da57688bda4","first_computed_at":"2026-05-18T00:21:05.743249Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:21:05.743249Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"tDNO7OzzFEgJEGCayHNvgtg7plQplYAEKc5IMv0gyxUeOER8u1pjVWcD8BMYLt92UD7I3wGhk7drpwonCy6BAA==","signature_status":"signed_v1","signed_at":"2026-05-18T00:21:05.743910Z","signed_message":"canonical_sha256_bytes"},"source_id":"1802.08257","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:5e52c482be09dbfe795e2eca365f672cb86f1a3cffe2eb82adb1ab4c29fa3c29","sha256:d2f5db09967acba2192e0934a6707385418be49284a9314064580c930a77a403"],"state_sha256":"7f3d4a833fe14211a0b9457aac7ee845ae4cd3dd2b5b04aa3eef6ae08dd4d6bc"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"UDqqejYEibhWvktKO2tItlMKP9Bk6RAsXMP3kC8RUZgp23knIgHPn4POmTq5Yh/Md+ZX8CEvr5ytmWBGGG9mAQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-03T16:10:24.653048Z","bundle_sha256":"b90e9934515549a5a18f8c630743727cec97fef2ca84e2532869def8cea40116"}}