{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2003:B3DST674UJEQKD7ZRNUVXQGXVH","short_pith_number":"pith:B3DST674","canonical_record":{"source":{"id":"physics/0303075","kind":"arxiv","version":2},"metadata":{"license":"","primary_cat":"physics.geo-ph","submitted_at":"2003-03-19T20:18:12Z","cross_cats_sorted":[],"title_canon_sha256":"7b4115510c36337e125aab3af4235f3f30510dd4e6e391b4d6beb8e25e61df4d","abstract_canon_sha256":"1e31e6de44ad4e765f4fbe737b4fa46a4a27a7c8aff598546d2ab9403963e2c6"},"schema_version":"1.0"},"canonical_sha256":"0ec729fbfca249050ff98b695bc0d7a9c2dc690a9420e99050fdd7c45c6be583","source":{"kind":"arxiv","id":"physics/0303075","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"physics/0303075","created_at":"2026-05-18T01:38:08Z"},{"alias_kind":"arxiv_version","alias_value":"physics/0303075v2","created_at":"2026-05-18T01:38:08Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.physics/0303075","created_at":"2026-05-18T01:38:08Z"},{"alias_kind":"pith_short_12","alias_value":"B3DST674UJEQ","created_at":"2026-05-18T12:25:51Z"},{"alias_kind":"pith_short_16","alias_value":"B3DST674UJEQKD7Z","created_at":"2026-05-18T12:25:51Z"},{"alias_kind":"pith_short_8","alias_value":"B3DST674","created_at":"2026-05-18T12:25:51Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2003:B3DST674UJEQKD7ZRNUVXQGXVH","target":"record","payload":{"canonical_record":{"source":{"id":"physics/0303075","kind":"arxiv","version":2},"metadata":{"license":"","primary_cat":"physics.geo-ph","submitted_at":"2003-03-19T20:18:12Z","cross_cats_sorted":[],"title_canon_sha256":"7b4115510c36337e125aab3af4235f3f30510dd4e6e391b4d6beb8e25e61df4d","abstract_canon_sha256":"1e31e6de44ad4e765f4fbe737b4fa46a4a27a7c8aff598546d2ab9403963e2c6"},"schema_version":"1.0"},"canonical_sha256":"0ec729fbfca249050ff98b695bc0d7a9c2dc690a9420e99050fdd7c45c6be583","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:38:08.962837Z","signature_b64":"LhZpgUP4lDlwfFoqz6DI99HP/BTdQSq9jyGnjeXDdqDVV94gKQhz9Tcxw6MXZSgXd2VriwzlJBucoxdH9LFOCQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"0ec729fbfca249050ff98b695bc0d7a9c2dc690a9420e99050fdd7c45c6be583","last_reissued_at":"2026-05-18T01:38:08.962225Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:38:08.962225Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"physics/0303075","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":"2026-05-18T01:38:08Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Wnyo5WnttbKuoPnMexiy8tJlOaKalEYkfkqB6hWKMQHb1LKFBQf/lo1tADvyzUoPfoOXtJjn8/kWs1nzFj4cBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-08T11:22:34.681647Z"},"content_sha256":"88ffdf56182e013a42ecbf71e8df281a897d88c72fa486007f37585f44c7d499","schema_version":"1.0","event_id":"sha256:88ffdf56182e013a42ecbf71e8df281a897d88c72fa486007f37585f44c7d499"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2003:B3DST674UJEQKD7ZRNUVXQGXVH","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Are Aftershocks of Large Californian Earthquakes Diffusing?","license":"","headline":"","cross_cats":[],"primary_cat":"physics.geo-ph","authors_text":"Agnes Helmstetter (UCLA), CNRS-Univ. Nice), Didier Sornette (UCLA, Guy Ouillon (CNRS-Univ. Nice)","submitted_at":"2003-03-19T20:18:12Z","abstract_excerpt":"We analyze 21 aftershock sequences of California to test for evidence of space-time diffusion. Aftershock diffusion may result from stress diffusion and is also predicted by any mechanism of stress weakening. Here, we test an alternative mechanism to explain aftershock diffusion, based on multiple cascades of triggering. In order to characterize aftershock diffusion, we develop two methods, one based on a suitable time and space windowing, the other using a wavelet transform adapted to the removal of background seismicity. Both methods confirm that diffusion of seismic activity is very weak, m"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"physics/0303075","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":"2026-05-18T01:38:08Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"lB/q5Jgupom7IWHmCbtUq8wODN8OvucqKnRv7r9Fu/wLChEHDAb6FljaUXAJwgwinJj4M1t1BxnuhwiXQUQOAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-08T11:22:34.682002Z"},"content_sha256":"187df37d02b3b89b9859ffca9c021d7ad6a8338d7949aaa58679d89c7023ad92","schema_version":"1.0","event_id":"sha256:187df37d02b3b89b9859ffca9c021d7ad6a8338d7949aaa58679d89c7023ad92"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/B3DST674UJEQKD7ZRNUVXQGXVH/bundle.json","state_url":"https://pith.science/pith/B3DST674UJEQKD7ZRNUVXQGXVH/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/B3DST674UJEQKD7ZRNUVXQGXVH/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":"2026-06-08T11:22:34Z","links":{"resolver":"https://pith.science/pith/B3DST674UJEQKD7ZRNUVXQGXVH","bundle":"https://pith.science/pith/B3DST674UJEQKD7ZRNUVXQGXVH/bundle.json","state":"https://pith.science/pith/B3DST674UJEQKD7ZRNUVXQGXVH/state.json","well_known_bundle":"https://pith.science/.well-known/pith/B3DST674UJEQKD7ZRNUVXQGXVH/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2003:B3DST674UJEQKD7ZRNUVXQGXVH","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":"1e31e6de44ad4e765f4fbe737b4fa46a4a27a7c8aff598546d2ab9403963e2c6","cross_cats_sorted":[],"license":"","primary_cat":"physics.geo-ph","submitted_at":"2003-03-19T20:18:12Z","title_canon_sha256":"7b4115510c36337e125aab3af4235f3f30510dd4e6e391b4d6beb8e25e61df4d"},"schema_version":"1.0","source":{"id":"physics/0303075","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"physics/0303075","created_at":"2026-05-18T01:38:08Z"},{"alias_kind":"arxiv_version","alias_value":"physics/0303075v2","created_at":"2026-05-18T01:38:08Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.physics/0303075","created_at":"2026-05-18T01:38:08Z"},{"alias_kind":"pith_short_12","alias_value":"B3DST674UJEQ","created_at":"2026-05-18T12:25:51Z"},{"alias_kind":"pith_short_16","alias_value":"B3DST674UJEQKD7Z","created_at":"2026-05-18T12:25:51Z"},{"alias_kind":"pith_short_8","alias_value":"B3DST674","created_at":"2026-05-18T12:25:51Z"}],"graph_snapshots":[{"event_id":"sha256:187df37d02b3b89b9859ffca9c021d7ad6a8338d7949aaa58679d89c7023ad92","target":"graph","created_at":"2026-05-18T01:38:08Z","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 analyze 21 aftershock sequences of California to test for evidence of space-time diffusion. Aftershock diffusion may result from stress diffusion and is also predicted by any mechanism of stress weakening. Here, we test an alternative mechanism to explain aftershock diffusion, based on multiple cascades of triggering. In order to characterize aftershock diffusion, we develop two methods, one based on a suitable time and space windowing, the other using a wavelet transform adapted to the removal of background seismicity. Both methods confirm that diffusion of seismic activity is very weak, m","authors_text":"Agnes Helmstetter (UCLA), CNRS-Univ. Nice), Didier Sornette (UCLA, Guy Ouillon (CNRS-Univ. Nice)","cross_cats":[],"headline":"","license":"","primary_cat":"physics.geo-ph","submitted_at":"2003-03-19T20:18:12Z","title":"Are Aftershocks of Large Californian Earthquakes Diffusing?"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"physics/0303075","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":"sha256:88ffdf56182e013a42ecbf71e8df281a897d88c72fa486007f37585f44c7d499","target":"record","created_at":"2026-05-18T01:38:08Z","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":"1e31e6de44ad4e765f4fbe737b4fa46a4a27a7c8aff598546d2ab9403963e2c6","cross_cats_sorted":[],"license":"","primary_cat":"physics.geo-ph","submitted_at":"2003-03-19T20:18:12Z","title_canon_sha256":"7b4115510c36337e125aab3af4235f3f30510dd4e6e391b4d6beb8e25e61df4d"},"schema_version":"1.0","source":{"id":"physics/0303075","kind":"arxiv","version":2}},"canonical_sha256":"0ec729fbfca249050ff98b695bc0d7a9c2dc690a9420e99050fdd7c45c6be583","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"0ec729fbfca249050ff98b695bc0d7a9c2dc690a9420e99050fdd7c45c6be583","first_computed_at":"2026-05-18T01:38:08.962225Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:38:08.962225Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"LhZpgUP4lDlwfFoqz6DI99HP/BTdQSq9jyGnjeXDdqDVV94gKQhz9Tcxw6MXZSgXd2VriwzlJBucoxdH9LFOCQ==","signature_status":"signed_v1","signed_at":"2026-05-18T01:38:08.962837Z","signed_message":"canonical_sha256_bytes"},"source_id":"physics/0303075","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:88ffdf56182e013a42ecbf71e8df281a897d88c72fa486007f37585f44c7d499","sha256:187df37d02b3b89b9859ffca9c021d7ad6a8338d7949aaa58679d89c7023ad92"],"state_sha256":"259feab63426a47b92dd374dc46870558aebf9a031f6a184d54c17b18eefaae5"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"rYpUxhy/ZddQS02+a64JqY8E8TgZvHRKs1R16WcKxysmYfp7ybhiJSz3QhW+OOm127py+NryjizPSlP+yHDxBg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-08T11:22:34.683980Z","bundle_sha256":"d07efad7c4c7b58de999c4524ec5ccca938a5603c04ed27c607404d124bba25a"}}