{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2017:K3NPK72H6GXZYEDKKWOPJ6LFF2","short_pith_number":"pith:K3NPK72H","canonical_record":{"source":{"id":"1707.04415","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2017-07-14T08:39:08Z","cross_cats_sorted":["hep-ex"],"title_canon_sha256":"b26ef8fc2906df645565a544a5f4d065e314bb13d086620e2ba31d6c135e5edb","abstract_canon_sha256":"c6849092d0889186c4de76ea6249152cb094339ab84c04d858a0a0dac9b620f3"},"schema_version":"1.0"},"canonical_sha256":"56daf57f47f1af9c106a559cf4f9652e9e0b7d62f72e95cf39551ebb535b91a8","source":{"kind":"arxiv","id":"1707.04415","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1707.04415","created_at":"2026-05-18T00:01:30Z"},{"alias_kind":"arxiv_version","alias_value":"1707.04415v1","created_at":"2026-05-18T00:01:30Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1707.04415","created_at":"2026-05-18T00:01:30Z"},{"alias_kind":"pith_short_12","alias_value":"K3NPK72H6GXZ","created_at":"2026-05-18T12:31:24Z"},{"alias_kind":"pith_short_16","alias_value":"K3NPK72H6GXZYEDK","created_at":"2026-05-18T12:31:24Z"},{"alias_kind":"pith_short_8","alias_value":"K3NPK72H","created_at":"2026-05-18T12:31:24Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2017:K3NPK72H6GXZYEDKKWOPJ6LFF2","target":"record","payload":{"canonical_record":{"source":{"id":"1707.04415","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2017-07-14T08:39:08Z","cross_cats_sorted":["hep-ex"],"title_canon_sha256":"b26ef8fc2906df645565a544a5f4d065e314bb13d086620e2ba31d6c135e5edb","abstract_canon_sha256":"c6849092d0889186c4de76ea6249152cb094339ab84c04d858a0a0dac9b620f3"},"schema_version":"1.0"},"canonical_sha256":"56daf57f47f1af9c106a559cf4f9652e9e0b7d62f72e95cf39551ebb535b91a8","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:01:30.490976Z","signature_b64":"ew7Imgy8RYEBc27kWEOwVT+HRdpztqgGd4vLMQCmXjIJKUadUyQATtbF2w1XDJu2gPABsqB88fdF0e7LDVQSBQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"56daf57f47f1af9c106a559cf4f9652e9e0b7d62f72e95cf39551ebb535b91a8","last_reissued_at":"2026-05-18T00:01:30.490513Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:01:30.490513Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1707.04415","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":"2026-05-18T00:01:30Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"0cBR/fmgfWWu9x9n7rSSghflDZSr+1jLZCBQhIg8nUYQ9nQAoqULvTEIbeAEjcVwRiNq7NZ4HfLJCmf9U1oICw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T21:49:17.198690Z"},"content_sha256":"5223d50e8b62299a459c8aabe80df6c022b9b2095242e7ac73b5c0f791d71dd0","schema_version":"1.0","event_id":"sha256:5223d50e8b62299a459c8aabe80df6c022b9b2095242e7ac73b5c0f791d71dd0"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2017:K3NPK72H6GXZYEDKKWOPJ6LFF2","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Hardware and software architecture of the upgraded H.E.S.S. cameras","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["hep-ex"],"primary_cat":"astro-ph.IM","authors_text":"A. Balzer, A. Jahnke, A. Kretzschmann, B. Giebels, C. Stegmann, C. Steppa, D. Berge, D. Ross, D. Salek, E. Delagnes, E. Moulin, F. Brun, F. Toussenel, G. Fontaine, G. Giavitto, H. Leich, H. L\\\"udecke, I. Lypova, J.A. Hinton, J.F. Glicenstein, J.P. Lenain, J. Thornhill, K. Shiningayamwe, M. Backes, M. de Naurois, M. F\\\"u{\\ss}ling, M. Kossatz, M. Penno, M. Schade, P. Manigot, P. Nayman, S. Bonnefoy, S. Klepser, S. Ohm, T. Ashton, T. Chaminade, T. Gr\\\"aber, T. Schwab, V. Lefranc, V. Marandon","submitted_at":"2017-07-14T08:39:08Z","abstract_excerpt":"In 2015/16, the photomultiplier cameras of the H.E.S.S. Cherenkov telescopes CT1-4 have undergone a major upgrade. The entire electronics has been replaced, using NECTAr chips for the front-end readout. A new ventilation system has been installed and several auxiliary components have been replaced. Besides this, the internal control and readout software was rewritten from scratch in a modern and modular way. Ethernet technology was used wherever possible to ensure both flexibility, stability and high bandwidth. An overview of the installed components will be given."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1707.04415","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":"2026-05-18T00:01:30Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"whMxuR+j+cS8eP8+YHLOF0G9wo3wTCH66lZRwPMK4kkKpweps/ptRnmXTGRj0/n6nE3MQu4pYHB8jpDjBWCYDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T21:49:17.199474Z"},"content_sha256":"7b2a334e2e31eedb7c4e13ece249bcd7dc70dace0d26c7dae843f529ee4b2f3d","schema_version":"1.0","event_id":"sha256:7b2a334e2e31eedb7c4e13ece249bcd7dc70dace0d26c7dae843f529ee4b2f3d"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/K3NPK72H6GXZYEDKKWOPJ6LFF2/bundle.json","state_url":"https://pith.science/pith/K3NPK72H6GXZYEDKKWOPJ6LFF2/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/K3NPK72H6GXZYEDKKWOPJ6LFF2/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":"2026-05-28T21:49:17Z","links":{"resolver":"https://pith.science/pith/K3NPK72H6GXZYEDKKWOPJ6LFF2","bundle":"https://pith.science/pith/K3NPK72H6GXZYEDKKWOPJ6LFF2/bundle.json","state":"https://pith.science/pith/K3NPK72H6GXZYEDKKWOPJ6LFF2/state.json","well_known_bundle":"https://pith.science/.well-known/pith/K3NPK72H6GXZYEDKKWOPJ6LFF2/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:K3NPK72H6GXZYEDKKWOPJ6LFF2","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":"c6849092d0889186c4de76ea6249152cb094339ab84c04d858a0a0dac9b620f3","cross_cats_sorted":["hep-ex"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2017-07-14T08:39:08Z","title_canon_sha256":"b26ef8fc2906df645565a544a5f4d065e314bb13d086620e2ba31d6c135e5edb"},"schema_version":"1.0","source":{"id":"1707.04415","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1707.04415","created_at":"2026-05-18T00:01:30Z"},{"alias_kind":"arxiv_version","alias_value":"1707.04415v1","created_at":"2026-05-18T00:01:30Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1707.04415","created_at":"2026-05-18T00:01:30Z"},{"alias_kind":"pith_short_12","alias_value":"K3NPK72H6GXZ","created_at":"2026-05-18T12:31:24Z"},{"alias_kind":"pith_short_16","alias_value":"K3NPK72H6GXZYEDK","created_at":"2026-05-18T12:31:24Z"},{"alias_kind":"pith_short_8","alias_value":"K3NPK72H","created_at":"2026-05-18T12:31:24Z"}],"graph_snapshots":[{"event_id":"sha256:7b2a334e2e31eedb7c4e13ece249bcd7dc70dace0d26c7dae843f529ee4b2f3d","target":"graph","created_at":"2026-05-18T00:01:30Z","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":"In 2015/16, the photomultiplier cameras of the H.E.S.S. Cherenkov telescopes CT1-4 have undergone a major upgrade. The entire electronics has been replaced, using NECTAr chips for the front-end readout. A new ventilation system has been installed and several auxiliary components have been replaced. Besides this, the internal control and readout software was rewritten from scratch in a modern and modular way. Ethernet technology was used wherever possible to ensure both flexibility, stability and high bandwidth. An overview of the installed components will be given.","authors_text":"A. Balzer, A. Jahnke, A. Kretzschmann, B. Giebels, C. Stegmann, C. Steppa, D. Berge, D. Ross, D. Salek, E. Delagnes, E. Moulin, F. Brun, F. Toussenel, G. Fontaine, G. Giavitto, H. Leich, H. L\\\"udecke, I. Lypova, J.A. Hinton, J.F. Glicenstein, J.P. Lenain, J. Thornhill, K. Shiningayamwe, M. Backes, M. de Naurois, M. F\\\"u{\\ss}ling, M. Kossatz, M. Penno, M. Schade, P. Manigot, P. Nayman, S. Bonnefoy, S. Klepser, S. Ohm, T. Ashton, T. Chaminade, T. Gr\\\"aber, T. Schwab, V. Lefranc, V. Marandon","cross_cats":["hep-ex"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2017-07-14T08:39:08Z","title":"Hardware and software architecture of the upgraded H.E.S.S. cameras"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1707.04415","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":"sha256:5223d50e8b62299a459c8aabe80df6c022b9b2095242e7ac73b5c0f791d71dd0","target":"record","created_at":"2026-05-18T00:01:30Z","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":"c6849092d0889186c4de76ea6249152cb094339ab84c04d858a0a0dac9b620f3","cross_cats_sorted":["hep-ex"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2017-07-14T08:39:08Z","title_canon_sha256":"b26ef8fc2906df645565a544a5f4d065e314bb13d086620e2ba31d6c135e5edb"},"schema_version":"1.0","source":{"id":"1707.04415","kind":"arxiv","version":1}},"canonical_sha256":"56daf57f47f1af9c106a559cf4f9652e9e0b7d62f72e95cf39551ebb535b91a8","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"56daf57f47f1af9c106a559cf4f9652e9e0b7d62f72e95cf39551ebb535b91a8","first_computed_at":"2026-05-18T00:01:30.490513Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:01:30.490513Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"ew7Imgy8RYEBc27kWEOwVT+HRdpztqgGd4vLMQCmXjIJKUadUyQATtbF2w1XDJu2gPABsqB88fdF0e7LDVQSBQ==","signature_status":"signed_v1","signed_at":"2026-05-18T00:01:30.490976Z","signed_message":"canonical_sha256_bytes"},"source_id":"1707.04415","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:5223d50e8b62299a459c8aabe80df6c022b9b2095242e7ac73b5c0f791d71dd0","sha256:7b2a334e2e31eedb7c4e13ece249bcd7dc70dace0d26c7dae843f529ee4b2f3d"],"state_sha256":"3ac123580eb9f4ed07ccfb64f55f21cced2ae1d2277ae82caf2fcbf9a8b7ef6c"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"QzAAw0b6MnVBnKkc/90Bp/HDf1bjFb0elEZOHLAzHWMHrUe21OpS+VAqXXhFB5Xoe6BgE8YKISsgCAM1CsOgBA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-28T21:49:17.202929Z","bundle_sha256":"17650aaee6239470b7ae3eacd3ce7bf6d95d07f048cb64379fc353bf6b298548"}}