{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2004:2ZTIIMP7ZKEEVOJK7TIDG67TDO","short_pith_number":"pith:2ZTIIMP7","canonical_record":{"source":{"id":"astro-ph/0403096","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2004-03-03T19:36:40Z","cross_cats_sorted":[],"title_canon_sha256":"dda1a86737604bd4383098af2928e47b2b1a945a6ce4b6da4ffe9ad01e306d72","abstract_canon_sha256":"f2890115b3dc796ee47a1af390e4b67902348e64457c6fd92f2fa305f17e8e69"},"schema_version":"1.0"},"canonical_sha256":"d6668431ffca884ab92afcd0337bf31b8464fe8f76560089e0720f21083a9cd9","source":{"kind":"arxiv","id":"astro-ph/0403096","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/0403096","created_at":"2026-05-18T00:59:51Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0403096v1","created_at":"2026-05-18T00:59:51Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0403096","created_at":"2026-05-18T00:59:51Z"},{"alias_kind":"pith_short_12","alias_value":"2ZTIIMP7ZKEE","created_at":"2026-05-18T12:25:52Z"},{"alias_kind":"pith_short_16","alias_value":"2ZTIIMP7ZKEEVOJK","created_at":"2026-05-18T12:25:52Z"},{"alias_kind":"pith_short_8","alias_value":"2ZTIIMP7","created_at":"2026-05-18T12:25:52Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2004:2ZTIIMP7ZKEEVOJK7TIDG67TDO","target":"record","payload":{"canonical_record":{"source":{"id":"astro-ph/0403096","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2004-03-03T19:36:40Z","cross_cats_sorted":[],"title_canon_sha256":"dda1a86737604bd4383098af2928e47b2b1a945a6ce4b6da4ffe9ad01e306d72","abstract_canon_sha256":"f2890115b3dc796ee47a1af390e4b67902348e64457c6fd92f2fa305f17e8e69"},"schema_version":"1.0"},"canonical_sha256":"d6668431ffca884ab92afcd0337bf31b8464fe8f76560089e0720f21083a9cd9","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:59:51.058540Z","signature_b64":"AWvfIlvfyKA2Iue5AQG3dfN2UaEJoMvpugJn6JgZAwnlJfcDu0nJOdS9M+4o3WtryhcRCpyyx1Xs0OxKTd45Bg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"d6668431ffca884ab92afcd0337bf31b8464fe8f76560089e0720f21083a9cd9","last_reissued_at":"2026-05-18T00:59:51.058043Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:59:51.058043Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"astro-ph/0403096","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":"2026-05-18T00:59:51Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Kzw7yIC9ZlWoZehYyNUjfTDqPJu3WR68sYXUmPRAYsKj2ucHCgtU+go5ZQ8ZZ9b6rK5m0EY3jJyYd/vQ7mYvBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-01T05:19:35.477859Z"},"content_sha256":"0b823987867828c8d8912f9fe6563004adc122e64a6ada49e6c3ef0ffc9caf36","schema_version":"1.0","event_id":"sha256:0b823987867828c8d8912f9fe6563004adc122e64a6ada49e6c3ef0ffc9caf36"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2004:2ZTIIMP7ZKEEVOJK7TIDG67TDO","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"HAWC: A Next Generation All-Sky VHE Gamma-Ray Telescope","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"A. Smith, G. Sinnis, J.E. McEnery","submitted_at":"2004-03-03T19:36:40Z","abstract_excerpt":"The study of the universe at energies above 100 GeV is a relatively new and exciting field. The current generation of pointed instruments have detected TeV gamma rays from at least 10 sources and the next generation of detectors promises a large increase in sensitivity. We have also seen the development of a new type of all-sky monitor in this energy regime based on water Cherenkov technology (Milagro). To fully understand the universe at these extreme energies requires a highly sensitive detector capable of continuously monitoring the entire overhead sky. Such an instrument could observe prom"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0403096","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":"2026-05-18T00:59:51Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"z9I4PmJ6gvzU4eVRmsVdAEtYGeeA4C72MzoPkGlb3Zqy0XS94RKXHAPSth7VFPxm1FvMs66gyAzDsZI1n56ECw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-01T05:19:35.478206Z"},"content_sha256":"863e6ce08fd79c94f8b078f5e9cec7811409061737d894bfebed807327eae51a","schema_version":"1.0","event_id":"sha256:863e6ce08fd79c94f8b078f5e9cec7811409061737d894bfebed807327eae51a"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/2ZTIIMP7ZKEEVOJK7TIDG67TDO/bundle.json","state_url":"https://pith.science/pith/2ZTIIMP7ZKEEVOJK7TIDG67TDO/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/2ZTIIMP7ZKEEVOJK7TIDG67TDO/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":"2026-06-01T05:19:35Z","links":{"resolver":"https://pith.science/pith/2ZTIIMP7ZKEEVOJK7TIDG67TDO","bundle":"https://pith.science/pith/2ZTIIMP7ZKEEVOJK7TIDG67TDO/bundle.json","state":"https://pith.science/pith/2ZTIIMP7ZKEEVOJK7TIDG67TDO/state.json","well_known_bundle":"https://pith.science/.well-known/pith/2ZTIIMP7ZKEEVOJK7TIDG67TDO/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2004:2ZTIIMP7ZKEEVOJK7TIDG67TDO","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":"f2890115b3dc796ee47a1af390e4b67902348e64457c6fd92f2fa305f17e8e69","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2004-03-03T19:36:40Z","title_canon_sha256":"dda1a86737604bd4383098af2928e47b2b1a945a6ce4b6da4ffe9ad01e306d72"},"schema_version":"1.0","source":{"id":"astro-ph/0403096","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/0403096","created_at":"2026-05-18T00:59:51Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0403096v1","created_at":"2026-05-18T00:59:51Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0403096","created_at":"2026-05-18T00:59:51Z"},{"alias_kind":"pith_short_12","alias_value":"2ZTIIMP7ZKEE","created_at":"2026-05-18T12:25:52Z"},{"alias_kind":"pith_short_16","alias_value":"2ZTIIMP7ZKEEVOJK","created_at":"2026-05-18T12:25:52Z"},{"alias_kind":"pith_short_8","alias_value":"2ZTIIMP7","created_at":"2026-05-18T12:25:52Z"}],"graph_snapshots":[{"event_id":"sha256:863e6ce08fd79c94f8b078f5e9cec7811409061737d894bfebed807327eae51a","target":"graph","created_at":"2026-05-18T00:59:51Z","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 study of the universe at energies above 100 GeV is a relatively new and exciting field. The current generation of pointed instruments have detected TeV gamma rays from at least 10 sources and the next generation of detectors promises a large increase in sensitivity. We have also seen the development of a new type of all-sky monitor in this energy regime based on water Cherenkov technology (Milagro). To fully understand the universe at these extreme energies requires a highly sensitive detector capable of continuously monitoring the entire overhead sky. Such an instrument could observe prom","authors_text":"A. Smith, G. Sinnis, J.E. McEnery","cross_cats":[],"headline":"","license":"","primary_cat":"astro-ph","submitted_at":"2004-03-03T19:36:40Z","title":"HAWC: A Next Generation All-Sky VHE Gamma-Ray Telescope"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0403096","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":"sha256:0b823987867828c8d8912f9fe6563004adc122e64a6ada49e6c3ef0ffc9caf36","target":"record","created_at":"2026-05-18T00:59:51Z","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":"f2890115b3dc796ee47a1af390e4b67902348e64457c6fd92f2fa305f17e8e69","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2004-03-03T19:36:40Z","title_canon_sha256":"dda1a86737604bd4383098af2928e47b2b1a945a6ce4b6da4ffe9ad01e306d72"},"schema_version":"1.0","source":{"id":"astro-ph/0403096","kind":"arxiv","version":1}},"canonical_sha256":"d6668431ffca884ab92afcd0337bf31b8464fe8f76560089e0720f21083a9cd9","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"d6668431ffca884ab92afcd0337bf31b8464fe8f76560089e0720f21083a9cd9","first_computed_at":"2026-05-18T00:59:51.058043Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:59:51.058043Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"AWvfIlvfyKA2Iue5AQG3dfN2UaEJoMvpugJn6JgZAwnlJfcDu0nJOdS9M+4o3WtryhcRCpyyx1Xs0OxKTd45Bg==","signature_status":"signed_v1","signed_at":"2026-05-18T00:59:51.058540Z","signed_message":"canonical_sha256_bytes"},"source_id":"astro-ph/0403096","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:0b823987867828c8d8912f9fe6563004adc122e64a6ada49e6c3ef0ffc9caf36","sha256:863e6ce08fd79c94f8b078f5e9cec7811409061737d894bfebed807327eae51a"],"state_sha256":"d292e670034479a132aeb5172673292b5e89111a51afb5a75e764d3e1e5ee389"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"8iYUiiyBi8tO8uqWWpbl3a6I/839V4UivxCzJeH25v9jsCPCN83WFX+yT9fXkh3C6GieJ1+WiFRHfNebY6lzBw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-01T05:19:35.480191Z","bundle_sha256":"a28b5078c923b03b9c1d883f6d9364d33bbe6e56f1538b5da999900f7470d5d1"}}