{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2011:EIGI7HRWRZUJKGYZJHTIXCVQL7","short_pith_number":"pith:EIGI7HRW","canonical_record":{"source":{"id":"1112.5686","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.hist-ph","submitted_at":"2011-12-24T02:25:53Z","cross_cats_sorted":["astro-ph.HE"],"title_canon_sha256":"dcc5a2d77cffcd7330670894f1c149aa0f466c5f4e0e9fbfc076c9cb883ede5c","abstract_canon_sha256":"266fb30c20f6a2ff3604cff4cb533b736cd69256498cbb7bab8fdb247ed221d8"},"schema_version":"1.0"},"canonical_sha256":"220c8f9e368e68951b1949e68b8ab05fcc4fb1b7c5df5aa50c5dae477ec08b67","source":{"kind":"arxiv","id":"1112.5686","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1112.5686","created_at":"2026-05-18T04:05:37Z"},{"alias_kind":"arxiv_version","alias_value":"1112.5686v1","created_at":"2026-05-18T04:05:37Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1112.5686","created_at":"2026-05-18T04:05:37Z"},{"alias_kind":"pith_short_12","alias_value":"EIGI7HRWRZUJ","created_at":"2026-05-18T12:26:28Z"},{"alias_kind":"pith_short_16","alias_value":"EIGI7HRWRZUJKGYZ","created_at":"2026-05-18T12:26:28Z"},{"alias_kind":"pith_short_8","alias_value":"EIGI7HRW","created_at":"2026-05-18T12:26:28Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2011:EIGI7HRWRZUJKGYZJHTIXCVQL7","target":"record","payload":{"canonical_record":{"source":{"id":"1112.5686","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.hist-ph","submitted_at":"2011-12-24T02:25:53Z","cross_cats_sorted":["astro-ph.HE"],"title_canon_sha256":"dcc5a2d77cffcd7330670894f1c149aa0f466c5f4e0e9fbfc076c9cb883ede5c","abstract_canon_sha256":"266fb30c20f6a2ff3604cff4cb533b736cd69256498cbb7bab8fdb247ed221d8"},"schema_version":"1.0"},"canonical_sha256":"220c8f9e368e68951b1949e68b8ab05fcc4fb1b7c5df5aa50c5dae477ec08b67","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T04:05:37.814597Z","signature_b64":"tl3D11+T36LBGlR/RBXd+VLR24eD4XrGkRBfrPxZMl05aoqzZSPTVcYOU7CI3iXuzfWSWbd4IKlkK4WT3yJlDA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"220c8f9e368e68951b1949e68b8ab05fcc4fb1b7c5df5aa50c5dae477ec08b67","last_reissued_at":"2026-05-18T04:05:37.814217Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T04:05:37.814217Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1112.5686","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":"2026-05-18T04:05:37Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"c9IlJk8JHPgqgHUw1JZna5jExRo8JUEJkgGmdwFEPKzKVuRPEumWR5917Rzs3U/o1mKVoMivEV+mpIDqe+VzCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-02T02:26:30.097631Z"},"content_sha256":"577330b0d520f99b727df9d53233fec1b300031c9f64442f2ddcc359dbc6784f","schema_version":"1.0","event_id":"sha256:577330b0d520f99b727df9d53233fec1b300031c9f64442f2ddcc359dbc6784f"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2011:EIGI7HRWRZUJKGYZJHTIXCVQL7","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Comment on Japanese Detection of Air Fluorescence Light from a Cosmic Ray Shower in 1969","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.HE"],"primary_cat":"physics.hist-ph","authors_text":"Bruce R. Dawson","submitted_at":"2011-12-24T02:25:53Z","abstract_excerpt":"We examine the claim made by Hara et al. in 1969 of the observation of a 10^19 eV cosmic ray extensive air shower using the air fluorescence technique. We find that it is likely that fluorescence light was observed, confirming this as the first such observation. The work of Hara et al. and their friendly competitors at Cornell University paved the way for modern experiments like the Pierre Auger Observatory and the Telescope Array."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1112.5686","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":"2026-05-18T04:05:37Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"sV8874+tPoKkbiuKPXvUABZCb4bFAmfedQ+wKEOwzzh6OiC3+dZOTT4oOxXc3DXSSD9CjvBU/DV1O/17WRJ6Cg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-02T02:26:30.097980Z"},"content_sha256":"9607e2a97493621eaac4a734aedff5094546a1c7270d484853e64f2bad63c985","schema_version":"1.0","event_id":"sha256:9607e2a97493621eaac4a734aedff5094546a1c7270d484853e64f2bad63c985"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/EIGI7HRWRZUJKGYZJHTIXCVQL7/bundle.json","state_url":"https://pith.science/pith/EIGI7HRWRZUJKGYZJHTIXCVQL7/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/EIGI7HRWRZUJKGYZJHTIXCVQL7/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":"2026-06-02T02:26:30Z","links":{"resolver":"https://pith.science/pith/EIGI7HRWRZUJKGYZJHTIXCVQL7","bundle":"https://pith.science/pith/EIGI7HRWRZUJKGYZJHTIXCVQL7/bundle.json","state":"https://pith.science/pith/EIGI7HRWRZUJKGYZJHTIXCVQL7/state.json","well_known_bundle":"https://pith.science/.well-known/pith/EIGI7HRWRZUJKGYZJHTIXCVQL7/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2011:EIGI7HRWRZUJKGYZJHTIXCVQL7","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":"266fb30c20f6a2ff3604cff4cb533b736cd69256498cbb7bab8fdb247ed221d8","cross_cats_sorted":["astro-ph.HE"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.hist-ph","submitted_at":"2011-12-24T02:25:53Z","title_canon_sha256":"dcc5a2d77cffcd7330670894f1c149aa0f466c5f4e0e9fbfc076c9cb883ede5c"},"schema_version":"1.0","source":{"id":"1112.5686","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1112.5686","created_at":"2026-05-18T04:05:37Z"},{"alias_kind":"arxiv_version","alias_value":"1112.5686v1","created_at":"2026-05-18T04:05:37Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1112.5686","created_at":"2026-05-18T04:05:37Z"},{"alias_kind":"pith_short_12","alias_value":"EIGI7HRWRZUJ","created_at":"2026-05-18T12:26:28Z"},{"alias_kind":"pith_short_16","alias_value":"EIGI7HRWRZUJKGYZ","created_at":"2026-05-18T12:26:28Z"},{"alias_kind":"pith_short_8","alias_value":"EIGI7HRW","created_at":"2026-05-18T12:26:28Z"}],"graph_snapshots":[{"event_id":"sha256:9607e2a97493621eaac4a734aedff5094546a1c7270d484853e64f2bad63c985","target":"graph","created_at":"2026-05-18T04:05:37Z","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 examine the claim made by Hara et al. in 1969 of the observation of a 10^19 eV cosmic ray extensive air shower using the air fluorescence technique. We find that it is likely that fluorescence light was observed, confirming this as the first such observation. The work of Hara et al. and their friendly competitors at Cornell University paved the way for modern experiments like the Pierre Auger Observatory and the Telescope Array.","authors_text":"Bruce R. Dawson","cross_cats":["astro-ph.HE"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.hist-ph","submitted_at":"2011-12-24T02:25:53Z","title":"Comment on Japanese Detection of Air Fluorescence Light from a Cosmic Ray Shower in 1969"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1112.5686","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":"sha256:577330b0d520f99b727df9d53233fec1b300031c9f64442f2ddcc359dbc6784f","target":"record","created_at":"2026-05-18T04:05:37Z","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":"266fb30c20f6a2ff3604cff4cb533b736cd69256498cbb7bab8fdb247ed221d8","cross_cats_sorted":["astro-ph.HE"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.hist-ph","submitted_at":"2011-12-24T02:25:53Z","title_canon_sha256":"dcc5a2d77cffcd7330670894f1c149aa0f466c5f4e0e9fbfc076c9cb883ede5c"},"schema_version":"1.0","source":{"id":"1112.5686","kind":"arxiv","version":1}},"canonical_sha256":"220c8f9e368e68951b1949e68b8ab05fcc4fb1b7c5df5aa50c5dae477ec08b67","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"220c8f9e368e68951b1949e68b8ab05fcc4fb1b7c5df5aa50c5dae477ec08b67","first_computed_at":"2026-05-18T04:05:37.814217Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T04:05:37.814217Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"tl3D11+T36LBGlR/RBXd+VLR24eD4XrGkRBfrPxZMl05aoqzZSPTVcYOU7CI3iXuzfWSWbd4IKlkK4WT3yJlDA==","signature_status":"signed_v1","signed_at":"2026-05-18T04:05:37.814597Z","signed_message":"canonical_sha256_bytes"},"source_id":"1112.5686","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:577330b0d520f99b727df9d53233fec1b300031c9f64442f2ddcc359dbc6784f","sha256:9607e2a97493621eaac4a734aedff5094546a1c7270d484853e64f2bad63c985"],"state_sha256":"4ea875758ba20acf29714ad9af93bee9a616c088554ae898d99ffb49a5473ecc"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"g81Ew1Rw+91HHUdxz6KSepPRRyb33M6SHCe1ZXmyXCXUO1/D8ASX6LqwL8uWRloX2PeMV8oVc4wFMNxDh8B+CQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-02T02:26:30.100201Z","bundle_sha256":"8ca4f241fba3ed2b11fae39df04f0aceadc5358ef7fae1a6f2e7101f7ab229a9"}}