{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2010:UDKX6SGIEIMAYEH77NYPT54NQF","short_pith_number":"pith:UDKX6SGI","canonical_record":{"source":{"id":"1005.0409","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2010-05-03T22:02:27Z","cross_cats_sorted":["hep-ex"],"title_canon_sha256":"d483a55846849e07c8d2e677ab04cc91c1bd6f0a5b0d203fa8cb6c753a7b538f","abstract_canon_sha256":"95309162b28ee126cdd29451e4acbd26ffe9c54c04e3fa65874b07600058c163"},"schema_version":"1.0"},"canonical_sha256":"a0d57f48c822180c10fffb70f9f78d8147ba2e0da6a987ad0e8061fc2d72b8d9","source":{"kind":"arxiv","id":"1005.0409","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1005.0409","created_at":"2026-05-18T04:22:29Z"},{"alias_kind":"arxiv_version","alias_value":"1005.0409v1","created_at":"2026-05-18T04:22:29Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1005.0409","created_at":"2026-05-18T04:22:29Z"},{"alias_kind":"pith_short_12","alias_value":"UDKX6SGIEIMA","created_at":"2026-05-18T12:26:15Z"},{"alias_kind":"pith_short_16","alias_value":"UDKX6SGIEIMAYEH7","created_at":"2026-05-18T12:26:15Z"},{"alias_kind":"pith_short_8","alias_value":"UDKX6SGI","created_at":"2026-05-18T12:26:15Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2010:UDKX6SGIEIMAYEH77NYPT54NQF","target":"record","payload":{"canonical_record":{"source":{"id":"1005.0409","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2010-05-03T22:02:27Z","cross_cats_sorted":["hep-ex"],"title_canon_sha256":"d483a55846849e07c8d2e677ab04cc91c1bd6f0a5b0d203fa8cb6c753a7b538f","abstract_canon_sha256":"95309162b28ee126cdd29451e4acbd26ffe9c54c04e3fa65874b07600058c163"},"schema_version":"1.0"},"canonical_sha256":"a0d57f48c822180c10fffb70f9f78d8147ba2e0da6a987ad0e8061fc2d72b8d9","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T04:22:29.797729Z","signature_b64":"qow+CeW5rrwAkNwbQFy63NXPEYLWdiNikeB7f9laUnMJDVBWd0aXTxFm5jOzs94RTcm/HB1Llc6uOVAKrvlRBw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"a0d57f48c822180c10fffb70f9f78d8147ba2e0da6a987ad0e8061fc2d72b8d9","last_reissued_at":"2026-05-18T04:22:29.797261Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T04:22:29.797261Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1005.0409","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":"2026-05-18T04:22:29Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ZQUTFlA8t8cehDjBm9GtIOjQWPiruI//dl+G+vEzOgUc82x4lhV20XYS84Lt47kj/kFE6DN98rSCTVRgTMT1Cg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-09T06:39:48.968103Z"},"content_sha256":"5a13a1ac5bb9dcc5a7c6b9e81d946aaff5b5adb35c7a03c36577ff5e15f02cb6","schema_version":"1.0","event_id":"sha256:5a13a1ac5bb9dcc5a7c6b9e81d946aaff5b5adb35c7a03c36577ff5e15f02cb6"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2010:UDKX6SGIEIMAYEH77NYPT54NQF","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Tests of a Digital Hadron Calorimeter","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["hep-ex"],"primary_cat":"physics.ins-det","authors_text":"B.Bilki, David Underwood, Ed May, Edwin Norbeck, Georgios Mavromanolakis, John Butler, Jose Repond, Lei Xia, Qingmin Zhang","submitted_at":"2010-05-03T22:02:27Z","abstract_excerpt":"In the context of developing a hadron calorimeter with extremely fine granularity for the application of Particle Flow Algorithms to the measurement of jet energies at a future lepton collider, we report on extensive tests of a small scale prototype calorimeter. The calorimeter contained up to 10 layers of Resistive Plate Chambers (RPCs) with 2560 1 \\times 1 cm2 readout pads, interleaved with steel absorber plates. The tests included both long-term Cosmic Ray data taking and measurements in particle beams, where the response to broadband muons and to pions and positrons with energies in the ra"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1005.0409","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":"2026-05-18T04:22:29Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"KovTVKitWji+blCq7MJvuu7WFqvragtW56rhavIcu4GiQyMBZZnY3vOA9wHdCfehreoCVAgc9SdPWXEftGWRBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-09T06:39:48.968872Z"},"content_sha256":"b8a7b25255e1356f99da57798540f6787c3bd4fd474ace8f251e12e5926073f4","schema_version":"1.0","event_id":"sha256:b8a7b25255e1356f99da57798540f6787c3bd4fd474ace8f251e12e5926073f4"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/UDKX6SGIEIMAYEH77NYPT54NQF/bundle.json","state_url":"https://pith.science/pith/UDKX6SGIEIMAYEH77NYPT54NQF/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/UDKX6SGIEIMAYEH77NYPT54NQF/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":"2026-06-09T06:39:48Z","links":{"resolver":"https://pith.science/pith/UDKX6SGIEIMAYEH77NYPT54NQF","bundle":"https://pith.science/pith/UDKX6SGIEIMAYEH77NYPT54NQF/bundle.json","state":"https://pith.science/pith/UDKX6SGIEIMAYEH77NYPT54NQF/state.json","well_known_bundle":"https://pith.science/.well-known/pith/UDKX6SGIEIMAYEH77NYPT54NQF/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2010:UDKX6SGIEIMAYEH77NYPT54NQF","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":"95309162b28ee126cdd29451e4acbd26ffe9c54c04e3fa65874b07600058c163","cross_cats_sorted":["hep-ex"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2010-05-03T22:02:27Z","title_canon_sha256":"d483a55846849e07c8d2e677ab04cc91c1bd6f0a5b0d203fa8cb6c753a7b538f"},"schema_version":"1.0","source":{"id":"1005.0409","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1005.0409","created_at":"2026-05-18T04:22:29Z"},{"alias_kind":"arxiv_version","alias_value":"1005.0409v1","created_at":"2026-05-18T04:22:29Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1005.0409","created_at":"2026-05-18T04:22:29Z"},{"alias_kind":"pith_short_12","alias_value":"UDKX6SGIEIMA","created_at":"2026-05-18T12:26:15Z"},{"alias_kind":"pith_short_16","alias_value":"UDKX6SGIEIMAYEH7","created_at":"2026-05-18T12:26:15Z"},{"alias_kind":"pith_short_8","alias_value":"UDKX6SGI","created_at":"2026-05-18T12:26:15Z"}],"graph_snapshots":[{"event_id":"sha256:b8a7b25255e1356f99da57798540f6787c3bd4fd474ace8f251e12e5926073f4","target":"graph","created_at":"2026-05-18T04:22:29Z","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 the context of developing a hadron calorimeter with extremely fine granularity for the application of Particle Flow Algorithms to the measurement of jet energies at a future lepton collider, we report on extensive tests of a small scale prototype calorimeter. The calorimeter contained up to 10 layers of Resistive Plate Chambers (RPCs) with 2560 1 \\times 1 cm2 readout pads, interleaved with steel absorber plates. The tests included both long-term Cosmic Ray data taking and measurements in particle beams, where the response to broadband muons and to pions and positrons with energies in the ra","authors_text":"B.Bilki, David Underwood, Ed May, Edwin Norbeck, Georgios Mavromanolakis, John Butler, Jose Repond, Lei Xia, Qingmin Zhang","cross_cats":["hep-ex"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2010-05-03T22:02:27Z","title":"Tests of a Digital Hadron Calorimeter"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1005.0409","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":"sha256:5a13a1ac5bb9dcc5a7c6b9e81d946aaff5b5adb35c7a03c36577ff5e15f02cb6","target":"record","created_at":"2026-05-18T04:22:29Z","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":"95309162b28ee126cdd29451e4acbd26ffe9c54c04e3fa65874b07600058c163","cross_cats_sorted":["hep-ex"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2010-05-03T22:02:27Z","title_canon_sha256":"d483a55846849e07c8d2e677ab04cc91c1bd6f0a5b0d203fa8cb6c753a7b538f"},"schema_version":"1.0","source":{"id":"1005.0409","kind":"arxiv","version":1}},"canonical_sha256":"a0d57f48c822180c10fffb70f9f78d8147ba2e0da6a987ad0e8061fc2d72b8d9","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"a0d57f48c822180c10fffb70f9f78d8147ba2e0da6a987ad0e8061fc2d72b8d9","first_computed_at":"2026-05-18T04:22:29.797261Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T04:22:29.797261Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"qow+CeW5rrwAkNwbQFy63NXPEYLWdiNikeB7f9laUnMJDVBWd0aXTxFm5jOzs94RTcm/HB1Llc6uOVAKrvlRBw==","signature_status":"signed_v1","signed_at":"2026-05-18T04:22:29.797729Z","signed_message":"canonical_sha256_bytes"},"source_id":"1005.0409","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:5a13a1ac5bb9dcc5a7c6b9e81d946aaff5b5adb35c7a03c36577ff5e15f02cb6","sha256:b8a7b25255e1356f99da57798540f6787c3bd4fd474ace8f251e12e5926073f4"],"state_sha256":"b72ef1be108802b849ffe55f9d6d85945cf0e27930de60329e274e64f5c58764"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"WiojZExnqJWEt8oYSTUc46VyP9ep+GRJqQIL5z9RbdIrsRWbnU3Fs6mL7Q18fHD1fNDH5kaWY6r/n2GCI9zpBg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-09T06:39:48.973259Z","bundle_sha256":"220f8d572f89f313efc974e76d2fb0d298152935b5cd1b9c70580cc61c52552a"}}