{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2014:MMATG2UMHOIUV57EMO5RK5M4YY","short_pith_number":"pith:MMATG2UM","canonical_record":{"source":{"id":"1401.6474","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2014-01-24T23:57:44Z","cross_cats_sorted":[],"title_canon_sha256":"ed4af2161f0b87c9e2d15df4f39027f4efd0ea88f894760f4069276db5f837db","abstract_canon_sha256":"a02d940f6d66ca4c27fd75deb10fabcbd2af3d620439a9d5427a35e60fda1802"},"schema_version":"1.0"},"canonical_sha256":"6301336a8c3b914af7e463bb15759cc6144915e1537819eaff72f535da6055a5","source":{"kind":"arxiv","id":"1401.6474","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1401.6474","created_at":"2026-05-18T03:01:01Z"},{"alias_kind":"arxiv_version","alias_value":"1401.6474v1","created_at":"2026-05-18T03:01:01Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1401.6474","created_at":"2026-05-18T03:01:01Z"},{"alias_kind":"pith_short_12","alias_value":"MMATG2UMHOIU","created_at":"2026-05-18T12:28:38Z"},{"alias_kind":"pith_short_16","alias_value":"MMATG2UMHOIUV57E","created_at":"2026-05-18T12:28:38Z"},{"alias_kind":"pith_short_8","alias_value":"MMATG2UM","created_at":"2026-05-18T12:28:38Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2014:MMATG2UMHOIUV57EMO5RK5M4YY","target":"record","payload":{"canonical_record":{"source":{"id":"1401.6474","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2014-01-24T23:57:44Z","cross_cats_sorted":[],"title_canon_sha256":"ed4af2161f0b87c9e2d15df4f39027f4efd0ea88f894760f4069276db5f837db","abstract_canon_sha256":"a02d940f6d66ca4c27fd75deb10fabcbd2af3d620439a9d5427a35e60fda1802"},"schema_version":"1.0"},"canonical_sha256":"6301336a8c3b914af7e463bb15759cc6144915e1537819eaff72f535da6055a5","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:01:01.732447Z","signature_b64":"WiDPZm17NTqtFxoVc59ijB+VsYzcLHuTh5iQfzHouolBfPbNFw2FXbt3KugBzTFZ4TxwwBRyXDtu2BFkitjlDQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"6301336a8c3b914af7e463bb15759cc6144915e1537819eaff72f535da6055a5","last_reissued_at":"2026-05-18T03:01:01.731735Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:01:01.731735Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1401.6474","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":"2026-05-18T03:01:01Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"IRftpJtEE/hRw6wbB05ST3IhBdFIF51JWy5dIr66+X0L2fdgI5QTbRY826rek2DxYaAip/BVa93KqceZZgxmCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-05T01:41:32.036891Z"},"content_sha256":"77683dca534df86da12e41421fa22f4d96aab8486d3d7cc58ee237aaecc78b86","schema_version":"1.0","event_id":"sha256:77683dca534df86da12e41421fa22f4d96aab8486d3d7cc58ee237aaecc78b86"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2014:MMATG2UMHOIUV57EMO5RK5M4YY","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Cycle 23 Variation in Solar Flare Productivity","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"Hugh Hudson, Jim McTiernan, Lyndsay Fletcher","submitted_at":"2014-01-24T23:57:44Z","abstract_excerpt":"The NOAA listings of solar flares in cycles 21-24, including the GOES soft X-ray magnitudes, enable a simple determination of the number of flares each flaring active region produces over its lifetime. We have studied this measure of flare productivity over the interval 1975-2012. The annual averages of flare productivity remained approximately constant during cycles 21 and 22, at about two reported M or X flares per region, but then increased significantly in the declining phase of cycle 23 (the years 2004-2005). We have confirmed this by using the independent RHESSI flare catalog to check th"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1401.6474","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":"2026-05-18T03:01:01Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"99VehcgDyJ2Z2PPJiSBN29LxKrYG2v7xXnyW2R/Y+aOsJW5BuFNMb/11Lki37PNHYid+vBtTdt2x5uUJt6cdBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-05T01:41:32.037549Z"},"content_sha256":"710336e94ae7c58dd103fc83cde19bce41bcff9874f4360b5a270032d4e940ca","schema_version":"1.0","event_id":"sha256:710336e94ae7c58dd103fc83cde19bce41bcff9874f4360b5a270032d4e940ca"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/MMATG2UMHOIUV57EMO5RK5M4YY/bundle.json","state_url":"https://pith.science/pith/MMATG2UMHOIUV57EMO5RK5M4YY/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/MMATG2UMHOIUV57EMO5RK5M4YY/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":"2026-06-05T01:41:32Z","links":{"resolver":"https://pith.science/pith/MMATG2UMHOIUV57EMO5RK5M4YY","bundle":"https://pith.science/pith/MMATG2UMHOIUV57EMO5RK5M4YY/bundle.json","state":"https://pith.science/pith/MMATG2UMHOIUV57EMO5RK5M4YY/state.json","well_known_bundle":"https://pith.science/.well-known/pith/MMATG2UMHOIUV57EMO5RK5M4YY/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2014:MMATG2UMHOIUV57EMO5RK5M4YY","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":"a02d940f6d66ca4c27fd75deb10fabcbd2af3d620439a9d5427a35e60fda1802","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2014-01-24T23:57:44Z","title_canon_sha256":"ed4af2161f0b87c9e2d15df4f39027f4efd0ea88f894760f4069276db5f837db"},"schema_version":"1.0","source":{"id":"1401.6474","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1401.6474","created_at":"2026-05-18T03:01:01Z"},{"alias_kind":"arxiv_version","alias_value":"1401.6474v1","created_at":"2026-05-18T03:01:01Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1401.6474","created_at":"2026-05-18T03:01:01Z"},{"alias_kind":"pith_short_12","alias_value":"MMATG2UMHOIU","created_at":"2026-05-18T12:28:38Z"},{"alias_kind":"pith_short_16","alias_value":"MMATG2UMHOIUV57E","created_at":"2026-05-18T12:28:38Z"},{"alias_kind":"pith_short_8","alias_value":"MMATG2UM","created_at":"2026-05-18T12:28:38Z"}],"graph_snapshots":[{"event_id":"sha256:710336e94ae7c58dd103fc83cde19bce41bcff9874f4360b5a270032d4e940ca","target":"graph","created_at":"2026-05-18T03:01:01Z","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":"The NOAA listings of solar flares in cycles 21-24, including the GOES soft X-ray magnitudes, enable a simple determination of the number of flares each flaring active region produces over its lifetime. We have studied this measure of flare productivity over the interval 1975-2012. The annual averages of flare productivity remained approximately constant during cycles 21 and 22, at about two reported M or X flares per region, but then increased significantly in the declining phase of cycle 23 (the years 2004-2005). We have confirmed this by using the independent RHESSI flare catalog to check th","authors_text":"Hugh Hudson, Jim McTiernan, Lyndsay Fletcher","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2014-01-24T23:57:44Z","title":"Cycle 23 Variation in Solar Flare Productivity"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1401.6474","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":"sha256:77683dca534df86da12e41421fa22f4d96aab8486d3d7cc58ee237aaecc78b86","target":"record","created_at":"2026-05-18T03:01:01Z","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":"a02d940f6d66ca4c27fd75deb10fabcbd2af3d620439a9d5427a35e60fda1802","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2014-01-24T23:57:44Z","title_canon_sha256":"ed4af2161f0b87c9e2d15df4f39027f4efd0ea88f894760f4069276db5f837db"},"schema_version":"1.0","source":{"id":"1401.6474","kind":"arxiv","version":1}},"canonical_sha256":"6301336a8c3b914af7e463bb15759cc6144915e1537819eaff72f535da6055a5","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"6301336a8c3b914af7e463bb15759cc6144915e1537819eaff72f535da6055a5","first_computed_at":"2026-05-18T03:01:01.731735Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:01:01.731735Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"WiDPZm17NTqtFxoVc59ijB+VsYzcLHuTh5iQfzHouolBfPbNFw2FXbt3KugBzTFZ4TxwwBRyXDtu2BFkitjlDQ==","signature_status":"signed_v1","signed_at":"2026-05-18T03:01:01.732447Z","signed_message":"canonical_sha256_bytes"},"source_id":"1401.6474","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:77683dca534df86da12e41421fa22f4d96aab8486d3d7cc58ee237aaecc78b86","sha256:710336e94ae7c58dd103fc83cde19bce41bcff9874f4360b5a270032d4e940ca"],"state_sha256":"5f94032bf2721017b2ec83cb04655070bea5c02a0d5ca5c833cd968f447860e4"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"27AO5L9BMo69F55VaBt+B+RwL7sLuSmA8bfDEGC4IWnMky/Kq0v3eFsM1kqWKJsw2OCMBFQyIojtOxIjDA3UBw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-05T01:41:32.041306Z","bundle_sha256":"18cebae55c499840da96ae5d6893b8448240b34aef6070e2faf72b6d84400e85"}}