{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2017:S4FQKW562FU2WV2A7PFM4V3HCS","short_pith_number":"pith:S4FQKW56","canonical_record":{"source":{"id":"1709.03751","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2017-09-12T09:15:24Z","cross_cats_sorted":[],"title_canon_sha256":"4ed60dc61de311d46907898393b43a8b743921224b5dc7c8d46b93d379f823a4","abstract_canon_sha256":"d461aa41d44f11b55662245f504027f7867583a9da61b74bce1a92917817c098"},"schema_version":"1.0"},"canonical_sha256":"970b055bbed169ab5740fbcace5767149a56492e469a1bd41f996596b551334c","source":{"kind":"arxiv","id":"1709.03751","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1709.03751","created_at":"2026-05-18T00:22:39Z"},{"alias_kind":"arxiv_version","alias_value":"1709.03751v2","created_at":"2026-05-18T00:22:39Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1709.03751","created_at":"2026-05-18T00:22:39Z"},{"alias_kind":"pith_short_12","alias_value":"S4FQKW562FU2","created_at":"2026-05-18T12:31:43Z"},{"alias_kind":"pith_short_16","alias_value":"S4FQKW562FU2WV2A","created_at":"2026-05-18T12:31:43Z"},{"alias_kind":"pith_short_8","alias_value":"S4FQKW56","created_at":"2026-05-18T12:31:43Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2017:S4FQKW562FU2WV2A7PFM4V3HCS","target":"record","payload":{"canonical_record":{"source":{"id":"1709.03751","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2017-09-12T09:15:24Z","cross_cats_sorted":[],"title_canon_sha256":"4ed60dc61de311d46907898393b43a8b743921224b5dc7c8d46b93d379f823a4","abstract_canon_sha256":"d461aa41d44f11b55662245f504027f7867583a9da61b74bce1a92917817c098"},"schema_version":"1.0"},"canonical_sha256":"970b055bbed169ab5740fbcace5767149a56492e469a1bd41f996596b551334c","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:22:39.565778Z","signature_b64":"n97p50IbQxQVMn9Ksl22pqzhDXjXb7hUI/HPPoHKQbia2kQZ/ri9sKQwrhTb9zJocTkGWnc4ePnyh1ZWEV+0BA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"970b055bbed169ab5740fbcace5767149a56492e469a1bd41f996596b551334c","last_reissued_at":"2026-05-18T00:22:39.565372Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:22:39.565372Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1709.03751","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":"2026-05-18T00:22:39Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"6i5PwBIbUxoCmRZBXKyb6+5c1dR8V/UWG5CTY59ki09m9BpfLRF7mkwxgo0tAGcWpYbSlNfz0uUtvqZkRxpVBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-31T02:29:48.073533Z"},"content_sha256":"7236edc0272ba4fa8fe01c53f31910ddcb239d84e0bcb4f6467ffc82ea568e0c","schema_version":"1.0","event_id":"sha256:7236edc0272ba4fa8fe01c53f31910ddcb239d84e0bcb4f6467ffc82ea568e0c"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2017:S4FQKW562FU2WV2A7PFM4V3HCS","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Data Acquisition Architecture and Online Processing System for the HAWC gamma-ray observatory","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.IM","authors_text":"A. Carrami\\~nana, A. Galindo, A. Imran, A. Iriarte, A. J. Smith, A. Lara, A. Marinelli, A. Sandoval, A. S. Barber, A. Zepeda, B. L. Dingus, B. M. Baughman, B. Patricelli, C. Alvarez, C. de Le\\'on, C. M. Hui, C. Rivi\\`ere, D. Berley, D. Kieda, D. Lennarz, D. Rosa-Gonz\\'alez, D. W. Fiorino, D. Zaborov, E. Belmont-Moreno, E. C. Linares, E. De la Fuente, E. G. P\\'erez-P\\'erez, E. Mendoza Torres, E. Moreno, E. Ruiz-Velasco, F. E. Sanchez, F. Garfias, F. Salesa Greus, G. B. Yodh, G. J. Kunde, G. Sinni, H. A. Ayala Solares, HAWC collaboration: A. U. Abeysekara, H. Le\\'on Vargas, H. Mart\\'inez-Huerta, H. Salazar, H. Zhou, I. G. Wisher, I. Taboada, I. Torres, J. A. Goodman, J. A. J. Matthews, J. Becerra Gonzalez, J. Braun, J. C. Arteaga-Vel\\'azquez, J. C. D\\'iaz-V\\'elez, J. Cotzomi, J. D. \\'Alvarez, J. Diaz-Cruz, J. Mart\\'inez-Castro, J. McEnery, J. P. Harding, J. Pretz, J. Ryan, J. T. Linnemann, J. Wood, K. Malone, K. S. Caballero-Mora, K. Sparks Woodle, K. Tollefson, L. Nellen, L. Villase\\~nor, M. A. DuVernois, M. Bonilla Rosales, M. Castillo, M. Gussert, M. Longo Proper, M. M. Gonz\\'alez, M. Mostaf\\'a, M. Newbold, M. Schneider, N. Bautista-Elivar, N. Fraija, O. Martinez, P. A. Toale, P. H\\\"untemeyer, P. Karn, P. Miranda-Romagnoli, P. W. Younk, R. A. Caballero-Lopez, R. Alfaro, R. Arceo, R. Diaz Hernandez, R. J. Lauer, R. Luna-Garc\\'ia, R. Noriega-Papaqui, R. Pelayo, R. W. Ellsworth, R. W. Springer, S. Silich, S. S. Marinelli, S. Westerhoff, S. Y. BenZvi, T. DeYoung, T. N. Ukwatta, T. Oceguera-Becerra, T. Weisgarber, T. Yapici, U. Cotti, V. Grabski, W. H. Lee, Z. Hampel-Arias","submitted_at":"2017-09-12T09:15:24Z","abstract_excerpt":"The High Altitude Water Cherenkov observatory (HAWC) is an air shower array devised for TeV gamma-ray astronomy. HAWC is located at an altitude of 4100 m a.s.l. in Sierra Negra, Mexico. HAWC consists of 300 Water Cherenkov Detectors, each instrumented with 4 photomultiplier tubes (PMTs). HAWC re-uses the Front-End Boards from the Milagro experiment to receive the PMT signals. These boards are used in combination with Time to Digital Converters (TDCs) to record the time and the amount of light in each PMT hit (light flash). A set of VME TDC modules (128 channels each) is operated in a continuou"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1709.03751","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":"2026-05-18T00:22:39Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"tNE0tM4KZmLNkgoMgnsE+YlD9QaDZ9R5BJ0yrUCFMNzT+GAg9ZyxdK2+XegRLfrGlAMMhGXKr6MCqEXkHXbDAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-31T02:29:48.074257Z"},"content_sha256":"db5bf799a0a3b4f33f6a70309276ca69f2e453d2bfd5e9cd46e0a3a3ed43c8d5","schema_version":"1.0","event_id":"sha256:db5bf799a0a3b4f33f6a70309276ca69f2e453d2bfd5e9cd46e0a3a3ed43c8d5"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/S4FQKW562FU2WV2A7PFM4V3HCS/bundle.json","state_url":"https://pith.science/pith/S4FQKW562FU2WV2A7PFM4V3HCS/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/S4FQKW562FU2WV2A7PFM4V3HCS/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":"2026-05-31T02:29:48Z","links":{"resolver":"https://pith.science/pith/S4FQKW562FU2WV2A7PFM4V3HCS","bundle":"https://pith.science/pith/S4FQKW562FU2WV2A7PFM4V3HCS/bundle.json","state":"https://pith.science/pith/S4FQKW562FU2WV2A7PFM4V3HCS/state.json","well_known_bundle":"https://pith.science/.well-known/pith/S4FQKW562FU2WV2A7PFM4V3HCS/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:S4FQKW562FU2WV2A7PFM4V3HCS","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":"d461aa41d44f11b55662245f504027f7867583a9da61b74bce1a92917817c098","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2017-09-12T09:15:24Z","title_canon_sha256":"4ed60dc61de311d46907898393b43a8b743921224b5dc7c8d46b93d379f823a4"},"schema_version":"1.0","source":{"id":"1709.03751","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1709.03751","created_at":"2026-05-18T00:22:39Z"},{"alias_kind":"arxiv_version","alias_value":"1709.03751v2","created_at":"2026-05-18T00:22:39Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1709.03751","created_at":"2026-05-18T00:22:39Z"},{"alias_kind":"pith_short_12","alias_value":"S4FQKW562FU2","created_at":"2026-05-18T12:31:43Z"},{"alias_kind":"pith_short_16","alias_value":"S4FQKW562FU2WV2A","created_at":"2026-05-18T12:31:43Z"},{"alias_kind":"pith_short_8","alias_value":"S4FQKW56","created_at":"2026-05-18T12:31:43Z"}],"graph_snapshots":[{"event_id":"sha256:db5bf799a0a3b4f33f6a70309276ca69f2e453d2bfd5e9cd46e0a3a3ed43c8d5","target":"graph","created_at":"2026-05-18T00:22:39Z","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 High Altitude Water Cherenkov observatory (HAWC) is an air shower array devised for TeV gamma-ray astronomy. HAWC is located at an altitude of 4100 m a.s.l. in Sierra Negra, Mexico. HAWC consists of 300 Water Cherenkov Detectors, each instrumented with 4 photomultiplier tubes (PMTs). HAWC re-uses the Front-End Boards from the Milagro experiment to receive the PMT signals. These boards are used in combination with Time to Digital Converters (TDCs) to record the time and the amount of light in each PMT hit (light flash). A set of VME TDC modules (128 channels each) is operated in a continuou","authors_text":"A. Carrami\\~nana, A. Galindo, A. Imran, A. Iriarte, A. J. Smith, A. Lara, A. Marinelli, A. Sandoval, A. S. Barber, A. Zepeda, B. L. Dingus, B. M. Baughman, B. Patricelli, C. Alvarez, C. de Le\\'on, C. M. Hui, C. Rivi\\`ere, D. Berley, D. Kieda, D. Lennarz, D. Rosa-Gonz\\'alez, D. W. Fiorino, D. Zaborov, E. Belmont-Moreno, E. C. Linares, E. De la Fuente, E. G. P\\'erez-P\\'erez, E. Mendoza Torres, E. Moreno, E. Ruiz-Velasco, F. E. Sanchez, F. Garfias, F. Salesa Greus, G. B. Yodh, G. J. Kunde, G. Sinni, H. A. Ayala Solares, HAWC collaboration: A. U. Abeysekara, H. Le\\'on Vargas, H. Mart\\'inez-Huerta, H. Salazar, H. Zhou, I. G. Wisher, I. Taboada, I. Torres, J. A. Goodman, J. A. J. Matthews, J. Becerra Gonzalez, J. Braun, J. C. Arteaga-Vel\\'azquez, J. C. D\\'iaz-V\\'elez, J. Cotzomi, J. D. \\'Alvarez, J. Diaz-Cruz, J. Mart\\'inez-Castro, J. McEnery, J. P. Harding, J. Pretz, J. Ryan, J. T. Linnemann, J. Wood, K. Malone, K. S. Caballero-Mora, K. Sparks Woodle, K. Tollefson, L. Nellen, L. Villase\\~nor, M. A. DuVernois, M. Bonilla Rosales, M. Castillo, M. Gussert, M. Longo Proper, M. M. Gonz\\'alez, M. Mostaf\\'a, M. Newbold, M. Schneider, N. Bautista-Elivar, N. Fraija, O. Martinez, P. A. Toale, P. H\\\"untemeyer, P. Karn, P. Miranda-Romagnoli, P. W. Younk, R. A. Caballero-Lopez, R. Alfaro, R. Arceo, R. Diaz Hernandez, R. J. Lauer, R. Luna-Garc\\'ia, R. Noriega-Papaqui, R. Pelayo, R. W. Ellsworth, R. W. Springer, S. Silich, S. S. Marinelli, S. Westerhoff, S. Y. BenZvi, T. DeYoung, T. N. Ukwatta, T. Oceguera-Becerra, T. Weisgarber, T. Yapici, U. Cotti, V. Grabski, W. H. Lee, Z. Hampel-Arias","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2017-09-12T09:15:24Z","title":"Data Acquisition Architecture and Online Processing System for the HAWC gamma-ray observatory"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1709.03751","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":"sha256:7236edc0272ba4fa8fe01c53f31910ddcb239d84e0bcb4f6467ffc82ea568e0c","target":"record","created_at":"2026-05-18T00:22:39Z","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":"d461aa41d44f11b55662245f504027f7867583a9da61b74bce1a92917817c098","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2017-09-12T09:15:24Z","title_canon_sha256":"4ed60dc61de311d46907898393b43a8b743921224b5dc7c8d46b93d379f823a4"},"schema_version":"1.0","source":{"id":"1709.03751","kind":"arxiv","version":2}},"canonical_sha256":"970b055bbed169ab5740fbcace5767149a56492e469a1bd41f996596b551334c","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"970b055bbed169ab5740fbcace5767149a56492e469a1bd41f996596b551334c","first_computed_at":"2026-05-18T00:22:39.565372Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:22:39.565372Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"n97p50IbQxQVMn9Ksl22pqzhDXjXb7hUI/HPPoHKQbia2kQZ/ri9sKQwrhTb9zJocTkGWnc4ePnyh1ZWEV+0BA==","signature_status":"signed_v1","signed_at":"2026-05-18T00:22:39.565778Z","signed_message":"canonical_sha256_bytes"},"source_id":"1709.03751","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:7236edc0272ba4fa8fe01c53f31910ddcb239d84e0bcb4f6467ffc82ea568e0c","sha256:db5bf799a0a3b4f33f6a70309276ca69f2e453d2bfd5e9cd46e0a3a3ed43c8d5"],"state_sha256":"e10d1bcfef0d7321d06290022f6ce70959c6553bfd04fd91442afe48ced249b0"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"XYTcjJRHRJSHUs82ZvJ31UVYwdpGCIthIsQCR0lfmIo37DJJwIeRfpx87dhxEDPZ99MJyDP8SD1s7IKCz2oJBQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-31T02:29:48.078288Z","bundle_sha256":"9b5ade327c00ff5564903200c64714b9083d0ce91036f4703297ff7ea30cd51a"}}