{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2016:C4JYPYI4IPCGPMDIIH6UDAO36L","short_pith_number":"pith:C4JYPYI4","canonical_record":{"source":{"id":"1610.06677","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2016-10-21T06:04:25Z","cross_cats_sorted":["astro-ph.HE"],"title_canon_sha256":"3d64ab219be45d4ec42537daa5bc94bb2f8bdcc48b4052982539d7902767591e","abstract_canon_sha256":"e10f836ca9d59d587bee072451bfe3b5c32d076e48baefb913661085117ad983"},"schema_version":"1.0"},"canonical_sha256":"171387e11c43c467b06841fd4181dbf2f2f21493bb39969cc4de4fb43a564c98","source":{"kind":"arxiv","id":"1610.06677","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1610.06677","created_at":"2026-05-18T01:01:37Z"},{"alias_kind":"arxiv_version","alias_value":"1610.06677v1","created_at":"2026-05-18T01:01:37Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1610.06677","created_at":"2026-05-18T01:01:37Z"},{"alias_kind":"pith_short_12","alias_value":"C4JYPYI4IPCG","created_at":"2026-05-18T12:30:09Z"},{"alias_kind":"pith_short_16","alias_value":"C4JYPYI4IPCGPMDI","created_at":"2026-05-18T12:30:09Z"},{"alias_kind":"pith_short_8","alias_value":"C4JYPYI4","created_at":"2026-05-18T12:30:09Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2016:C4JYPYI4IPCGPMDIIH6UDAO36L","target":"record","payload":{"canonical_record":{"source":{"id":"1610.06677","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2016-10-21T06:04:25Z","cross_cats_sorted":["astro-ph.HE"],"title_canon_sha256":"3d64ab219be45d4ec42537daa5bc94bb2f8bdcc48b4052982539d7902767591e","abstract_canon_sha256":"e10f836ca9d59d587bee072451bfe3b5c32d076e48baefb913661085117ad983"},"schema_version":"1.0"},"canonical_sha256":"171387e11c43c467b06841fd4181dbf2f2f21493bb39969cc4de4fb43a564c98","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:01:37.005107Z","signature_b64":"F3rqyZ51ajinuH2LBBqv2OW+OeRWgpPRxqThxvS5n00tTc+lXHM0hlvtk9d2B5UeIsEOMDetv59M2qdmvI/RDA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"171387e11c43c467b06841fd4181dbf2f2f21493bb39969cc4de4fb43a564c98","last_reissued_at":"2026-05-18T01:01:37.004486Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:01:37.004486Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1610.06677","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":"2026-05-18T01:01:37Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Qm73tgxeMAJCsC78zsNh3dLE18Y9gODlW+TTuaVHZe5lvw6xrDaBx2soGCNSDW3sbkriE1g4RCFjoD4qfoWUBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-19T10:15:59.954247Z"},"content_sha256":"4b0381d87104027293d55d4a14146abf5162a5267967583ecd8c88e41944590a","schema_version":"1.0","event_id":"sha256:4b0381d87104027293d55d4a14146abf5162a5267967583ecd8c88e41944590a"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2016:C4JYPYI4IPCGPMDIIH6UDAO36L","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Performance of the PRAXyS X-ray Polarimeter","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.HE"],"primary_cat":"astro-ph.IM","authors_text":"A. Hayato, H. Marlowe, J.E. Hill, J.K. Black, K. Jahoda, M. Kubota, P. Kaaret, R. Cole, R. McCurdy, T. Enoto, T. Kitaguchi, T. Tamagawa, W.B. Iwakiri, Y. Takeuchi","submitted_at":"2016-10-21T06:04:25Z","abstract_excerpt":"The performance of the Time Projection Chamber (TPC) polarimeter for the Polarimeter for Relativistic Astrophysical X-ray Sources (PRAXyS) Small Explorer was evaluated using polarized and unpolarized X-ray sources. The PRAXyS mission will enable exploration of the universe through X-ray polarimetry in the 2-10 keV energy band. We carried out performance tests of the polarimeter at the Brookhaven National Laboratory, National Synchrotron Light Source (BNL-NSLS) and at NASA's Goddard Space Flight Center. The polarimeter was tested with linearly polarized, monochromatic X-rays at 11 different ene"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1610.06677","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":"2026-05-18T01:01:37Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"r+ol1vPm156UscTYYYyNc+wM8HE9LN78UMfg67MZZ1jUNadpzZ8xvDfPLgRPosc4pBEUKiJMt0TwarLejyZiAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-19T10:15:59.954602Z"},"content_sha256":"12cd4cbc9d8de5ca7fa6826fbcfc7fbb77f553d63717202f1355e655f80a30f0","schema_version":"1.0","event_id":"sha256:12cd4cbc9d8de5ca7fa6826fbcfc7fbb77f553d63717202f1355e655f80a30f0"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/C4JYPYI4IPCGPMDIIH6UDAO36L/bundle.json","state_url":"https://pith.science/pith/C4JYPYI4IPCGPMDIIH6UDAO36L/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/C4JYPYI4IPCGPMDIIH6UDAO36L/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":"2026-05-19T10:15:59Z","links":{"resolver":"https://pith.science/pith/C4JYPYI4IPCGPMDIIH6UDAO36L","bundle":"https://pith.science/pith/C4JYPYI4IPCGPMDIIH6UDAO36L/bundle.json","state":"https://pith.science/pith/C4JYPYI4IPCGPMDIIH6UDAO36L/state.json","well_known_bundle":"https://pith.science/.well-known/pith/C4JYPYI4IPCGPMDIIH6UDAO36L/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:C4JYPYI4IPCGPMDIIH6UDAO36L","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":"e10f836ca9d59d587bee072451bfe3b5c32d076e48baefb913661085117ad983","cross_cats_sorted":["astro-ph.HE"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2016-10-21T06:04:25Z","title_canon_sha256":"3d64ab219be45d4ec42537daa5bc94bb2f8bdcc48b4052982539d7902767591e"},"schema_version":"1.0","source":{"id":"1610.06677","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1610.06677","created_at":"2026-05-18T01:01:37Z"},{"alias_kind":"arxiv_version","alias_value":"1610.06677v1","created_at":"2026-05-18T01:01:37Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1610.06677","created_at":"2026-05-18T01:01:37Z"},{"alias_kind":"pith_short_12","alias_value":"C4JYPYI4IPCG","created_at":"2026-05-18T12:30:09Z"},{"alias_kind":"pith_short_16","alias_value":"C4JYPYI4IPCGPMDI","created_at":"2026-05-18T12:30:09Z"},{"alias_kind":"pith_short_8","alias_value":"C4JYPYI4","created_at":"2026-05-18T12:30:09Z"}],"graph_snapshots":[{"event_id":"sha256:12cd4cbc9d8de5ca7fa6826fbcfc7fbb77f553d63717202f1355e655f80a30f0","target":"graph","created_at":"2026-05-18T01:01:37Z","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":"The performance of the Time Projection Chamber (TPC) polarimeter for the Polarimeter for Relativistic Astrophysical X-ray Sources (PRAXyS) Small Explorer was evaluated using polarized and unpolarized X-ray sources. The PRAXyS mission will enable exploration of the universe through X-ray polarimetry in the 2-10 keV energy band. We carried out performance tests of the polarimeter at the Brookhaven National Laboratory, National Synchrotron Light Source (BNL-NSLS) and at NASA's Goddard Space Flight Center. The polarimeter was tested with linearly polarized, monochromatic X-rays at 11 different ene","authors_text":"A. Hayato, H. Marlowe, J.E. Hill, J.K. Black, K. Jahoda, M. Kubota, P. Kaaret, R. Cole, R. McCurdy, T. Enoto, T. Kitaguchi, T. Tamagawa, W.B. Iwakiri, Y. Takeuchi","cross_cats":["astro-ph.HE"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2016-10-21T06:04:25Z","title":"Performance of the PRAXyS X-ray Polarimeter"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1610.06677","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":"sha256:4b0381d87104027293d55d4a14146abf5162a5267967583ecd8c88e41944590a","target":"record","created_at":"2026-05-18T01:01:37Z","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":"e10f836ca9d59d587bee072451bfe3b5c32d076e48baefb913661085117ad983","cross_cats_sorted":["astro-ph.HE"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2016-10-21T06:04:25Z","title_canon_sha256":"3d64ab219be45d4ec42537daa5bc94bb2f8bdcc48b4052982539d7902767591e"},"schema_version":"1.0","source":{"id":"1610.06677","kind":"arxiv","version":1}},"canonical_sha256":"171387e11c43c467b06841fd4181dbf2f2f21493bb39969cc4de4fb43a564c98","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"171387e11c43c467b06841fd4181dbf2f2f21493bb39969cc4de4fb43a564c98","first_computed_at":"2026-05-18T01:01:37.004486Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:01:37.004486Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"F3rqyZ51ajinuH2LBBqv2OW+OeRWgpPRxqThxvS5n00tTc+lXHM0hlvtk9d2B5UeIsEOMDetv59M2qdmvI/RDA==","signature_status":"signed_v1","signed_at":"2026-05-18T01:01:37.005107Z","signed_message":"canonical_sha256_bytes"},"source_id":"1610.06677","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:4b0381d87104027293d55d4a14146abf5162a5267967583ecd8c88e41944590a","sha256:12cd4cbc9d8de5ca7fa6826fbcfc7fbb77f553d63717202f1355e655f80a30f0"],"state_sha256":"e60725968b5e8d081dc038a6d007ad17968c3b7348ca9c9d6e5c5c78802d99a7"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"HnpH8ld8JZsEab1Gq0EowEGVdxUxnzJTVFDGaC0tGBsz31Ul3zuCHR4W9UNWWDpM4cE00Gbzjv+954L4QF3EDQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-19T10:15:59.956179Z","bundle_sha256":"826ca8a83aecd617fc53b3d3129eab6adb53e3aec2789d044fed5d7026c375de"}}