{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2006:2MF7Z3Y774SJIQZXQKD4LD3LZR","short_pith_number":"pith:2MF7Z3Y7","canonical_record":{"source":{"id":"physics/0605038","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"physics.hist-ph","submitted_at":"2006-05-04T07:44:47Z","cross_cats_sorted":["physics.gen-ph"],"title_canon_sha256":"0ec2a3bb22b5bf0fbf8b03d47b6624bd6621ec28ba12b663be8e1960780a4b51","abstract_canon_sha256":"d27c02eb3fff37ef2369f9ba9ba0d5a09cd119b40ddbae405bd81f8909b627d8"},"schema_version":"1.0"},"canonical_sha256":"d30bfcef1fff249443378287c58f6bcc61556ce1dfea7eb6ff5d8d49f812f5b6","source":{"kind":"arxiv","id":"physics/0605038","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"physics/0605038","created_at":"2026-07-04T14:55:09Z"},{"alias_kind":"arxiv_version","alias_value":"physics/0605038v1","created_at":"2026-07-04T14:55:09Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.physics/0605038","created_at":"2026-07-04T14:55:09Z"},{"alias_kind":"pith_short_12","alias_value":"2MF7Z3Y774SJ","created_at":"2026-07-04T14:55:09Z"},{"alias_kind":"pith_short_16","alias_value":"2MF7Z3Y774SJIQZX","created_at":"2026-07-04T14:55:09Z"},{"alias_kind":"pith_short_8","alias_value":"2MF7Z3Y7","created_at":"2026-07-04T14:55:09Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2006:2MF7Z3Y774SJIQZXQKD4LD3LZR","target":"record","payload":{"canonical_record":{"source":{"id":"physics/0605038","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"physics.hist-ph","submitted_at":"2006-05-04T07:44:47Z","cross_cats_sorted":["physics.gen-ph"],"title_canon_sha256":"0ec2a3bb22b5bf0fbf8b03d47b6624bd6621ec28ba12b663be8e1960780a4b51","abstract_canon_sha256":"d27c02eb3fff37ef2369f9ba9ba0d5a09cd119b40ddbae405bd81f8909b627d8"},"schema_version":"1.0"},"canonical_sha256":"d30bfcef1fff249443378287c58f6bcc61556ce1dfea7eb6ff5d8d49f812f5b6","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-04T14:55:09.223608Z","signature_b64":"41a+qnNstgY741qWZsqFQJpIKN90+/fGc6+JYj+aeiLsxbkluBxmLZKSmHJyiJOZiyK42kgaBJsi06QNxZc9CA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"d30bfcef1fff249443378287c58f6bcc61556ce1dfea7eb6ff5d8d49f812f5b6","last_reissued_at":"2026-07-04T14:55:09.223196Z","signature_status":"signed_v1","first_computed_at":"2026-07-04T14:55:09.223196Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"physics/0605038","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":"2026-07-04T14:55:09Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"cr82CkAxJeK7lb2SsxhRR5OaPahNerJPJeISxGHLCYLLLnWQoalbQ1SGrf1Xw67v8cH7oFGEEeWAc4ryOCTyAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-03T15:29:31.150020Z"},"content_sha256":"2e337a66fc749ff0cf45e1c714aa626ed1763f11cff614921b4595383350c77e","schema_version":"1.0","event_id":"sha256:2e337a66fc749ff0cf45e1c714aa626ed1763f11cff614921b4595383350c77e"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2006:2MF7Z3Y774SJIQZXQKD4LD3LZR","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Consequences of Dirac Theory of the Positron","license":"","headline":"","cross_cats":["physics.gen-ph"],"primary_cat":"physics.hist-ph","authors_text":"H. Euler, W. Heisenberg","submitted_at":"2006-05-04T07:44:47Z","abstract_excerpt":"According to Dirac's theory of the positron, an electromagnetic field tends to create pairs of particles which leads to a change of Maxwell's equations in the vacuum. These changes are calculated in the special case that no real electrons or positrons are present and the field varies little over a Compton wavelength."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"physics/0605038","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/physics/0605038/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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":"2026-07-04T14:55:09Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"V8RWekjHlB6BLv2XHjnPQiu6WQhqz2rR1QdQ83+a+YxGuzacSyA9Zt8IogHd0zTSYgJ2MeYXDDZQV4b3RGPfAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-03T15:29:31.150985Z"},"content_sha256":"450b4f1090dfc81f223d652306176991b39d4c9190d5c3bfdbecd788d9685926","schema_version":"1.0","event_id":"sha256:450b4f1090dfc81f223d652306176991b39d4c9190d5c3bfdbecd788d9685926"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/2MF7Z3Y774SJIQZXQKD4LD3LZR/bundle.json","state_url":"https://pith.science/pith/2MF7Z3Y774SJIQZXQKD4LD3LZR/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/2MF7Z3Y774SJIQZXQKD4LD3LZR/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":"2026-08-03T15:29:31Z","links":{"resolver":"https://pith.science/pith/2MF7Z3Y774SJIQZXQKD4LD3LZR","bundle":"https://pith.science/pith/2MF7Z3Y774SJIQZXQKD4LD3LZR/bundle.json","state":"https://pith.science/pith/2MF7Z3Y774SJIQZXQKD4LD3LZR/state.json","well_known_bundle":"https://pith.science/.well-known/pith/2MF7Z3Y774SJIQZXQKD4LD3LZR/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2006:2MF7Z3Y774SJIQZXQKD4LD3LZR","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":"d27c02eb3fff37ef2369f9ba9ba0d5a09cd119b40ddbae405bd81f8909b627d8","cross_cats_sorted":["physics.gen-ph"],"license":"","primary_cat":"physics.hist-ph","submitted_at":"2006-05-04T07:44:47Z","title_canon_sha256":"0ec2a3bb22b5bf0fbf8b03d47b6624bd6621ec28ba12b663be8e1960780a4b51"},"schema_version":"1.0","source":{"id":"physics/0605038","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"physics/0605038","created_at":"2026-07-04T14:55:09Z"},{"alias_kind":"arxiv_version","alias_value":"physics/0605038v1","created_at":"2026-07-04T14:55:09Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.physics/0605038","created_at":"2026-07-04T14:55:09Z"},{"alias_kind":"pith_short_12","alias_value":"2MF7Z3Y774SJ","created_at":"2026-07-04T14:55:09Z"},{"alias_kind":"pith_short_16","alias_value":"2MF7Z3Y774SJIQZX","created_at":"2026-07-04T14:55:09Z"},{"alias_kind":"pith_short_8","alias_value":"2MF7Z3Y7","created_at":"2026-07-04T14:55:09Z"}],"graph_snapshots":[{"event_id":"sha256:450b4f1090dfc81f223d652306176991b39d4c9190d5c3bfdbecd788d9685926","target":"graph","created_at":"2026-07-04T14:55:09Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/physics/0605038/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"According to Dirac's theory of the positron, an electromagnetic field tends to create pairs of particles which leads to a change of Maxwell's equations in the vacuum. These changes are calculated in the special case that no real electrons or positrons are present and the field varies little over a Compton wavelength.","authors_text":"H. Euler, W. Heisenberg","cross_cats":["physics.gen-ph"],"headline":"","license":"","primary_cat":"physics.hist-ph","submitted_at":"2006-05-04T07:44:47Z","title":"Consequences of Dirac Theory of the Positron"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"physics/0605038","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":"sha256:2e337a66fc749ff0cf45e1c714aa626ed1763f11cff614921b4595383350c77e","target":"record","created_at":"2026-07-04T14:55:09Z","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":"d27c02eb3fff37ef2369f9ba9ba0d5a09cd119b40ddbae405bd81f8909b627d8","cross_cats_sorted":["physics.gen-ph"],"license":"","primary_cat":"physics.hist-ph","submitted_at":"2006-05-04T07:44:47Z","title_canon_sha256":"0ec2a3bb22b5bf0fbf8b03d47b6624bd6621ec28ba12b663be8e1960780a4b51"},"schema_version":"1.0","source":{"id":"physics/0605038","kind":"arxiv","version":1}},"canonical_sha256":"d30bfcef1fff249443378287c58f6bcc61556ce1dfea7eb6ff5d8d49f812f5b6","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"d30bfcef1fff249443378287c58f6bcc61556ce1dfea7eb6ff5d8d49f812f5b6","first_computed_at":"2026-07-04T14:55:09.223196Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T14:55:09.223196Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"41a+qnNstgY741qWZsqFQJpIKN90+/fGc6+JYj+aeiLsxbkluBxmLZKSmHJyiJOZiyK42kgaBJsi06QNxZc9CA==","signature_status":"signed_v1","signed_at":"2026-07-04T14:55:09.223608Z","signed_message":"canonical_sha256_bytes"},"source_id":"physics/0605038","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:2e337a66fc749ff0cf45e1c714aa626ed1763f11cff614921b4595383350c77e","sha256:450b4f1090dfc81f223d652306176991b39d4c9190d5c3bfdbecd788d9685926"],"state_sha256":"7dc0873e13ed18e237d9d079c8f34cebb0d0bc48f98d9820a05587281d706b41"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"jnmfWp3hCdFJW7CJ40nVQ7AE+Ja1NByC6ih6nbYQ/HrN6Bm/vh77fYjXZ9E8krSJB6mwwdhoKc37pDe+3U16CA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-03T15:29:31.166340Z","bundle_sha256":"8d76046bb315d91b424df56d12043758ef088ed8e34db9f62daea6abb8f97a0c"}}