{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2011:WSNWJK6CZZGQMGD7YVH7M2RAAI","short_pith_number":"pith:WSNWJK6C","canonical_record":{"source":{"id":"1105.0637","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2011-05-03T17:21:42Z","cross_cats_sorted":["astro-ph.HE"],"title_canon_sha256":"3029889751d4fd20e5d45856275391a1eab7ebd77be40c52c5802222d6476847","abstract_canon_sha256":"ce327900a0a1a33587565bf88db9a33583a53942c666b1ab7278724a4c5cc9f9"},"schema_version":"1.0"},"canonical_sha256":"b49b64abc2ce4d06187fc54ff66a2002164c395c219cfd8113be4940412b5cb5","source":{"kind":"arxiv","id":"1105.0637","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1105.0637","created_at":"2026-05-18T04:23:02Z"},{"alias_kind":"arxiv_version","alias_value":"1105.0637v1","created_at":"2026-05-18T04:23:02Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1105.0637","created_at":"2026-05-18T04:23:02Z"},{"alias_kind":"pith_short_12","alias_value":"WSNWJK6CZZGQ","created_at":"2026-05-18T12:26:44Z"},{"alias_kind":"pith_short_16","alias_value":"WSNWJK6CZZGQMGD7","created_at":"2026-05-18T12:26:44Z"},{"alias_kind":"pith_short_8","alias_value":"WSNWJK6C","created_at":"2026-05-18T12:26:44Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2011:WSNWJK6CZZGQMGD7YVH7M2RAAI","target":"record","payload":{"canonical_record":{"source":{"id":"1105.0637","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2011-05-03T17:21:42Z","cross_cats_sorted":["astro-ph.HE"],"title_canon_sha256":"3029889751d4fd20e5d45856275391a1eab7ebd77be40c52c5802222d6476847","abstract_canon_sha256":"ce327900a0a1a33587565bf88db9a33583a53942c666b1ab7278724a4c5cc9f9"},"schema_version":"1.0"},"canonical_sha256":"b49b64abc2ce4d06187fc54ff66a2002164c395c219cfd8113be4940412b5cb5","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T04:23:02.043441Z","signature_b64":"grZgZtJq9RXs2L7SI2qDKmv8b/SISAMnuHVigCsG1SwgPjUbiaXrBj7gIPQ4F11HOn73KQrUyz9L24waEGtvBA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"b49b64abc2ce4d06187fc54ff66a2002164c395c219cfd8113be4940412b5cb5","last_reissued_at":"2026-05-18T04:23:02.042797Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T04:23:02.042797Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1105.0637","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":"2026-05-18T04:23:02Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"bGJe0J+Lq6S5ACOdFrlISnsdCiuXaQloPVTW1UP+1Q72VtSZxNblo+zMgAhtJ87XewY+k88gYOG3COLcvq2sAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T12:59:52.456762Z"},"content_sha256":"40df8036a1a1926f808da517c7466de6b7f34351419569b3b15753aff8c3d957","schema_version":"1.0","event_id":"sha256:40df8036a1a1926f808da517c7466de6b7f34351419569b3b15753aff8c3d957"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2011:WSNWJK6CZZGQMGD7YVH7M2RAAI","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"POLARIX: a pathfinder mission of X-ray polarimetry","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.HE"],"primary_cat":"astro-ph.IM","authors_text":"Alda Rubini, Alessandro Brez, Alessio Trois, Andrea Argan, Antonella Ferri, Antonio Maria Salonico, Carmelo Sgro', Daniele Spiga, Ennio Morelli, Enrico Costa, Fabio Muleri, Francesco Lazzarotto, Gianpiero Tagliaferri, Giorgio Matt, Giovanni Pareschi, Giuseppe Di Persio, Gloria Spandre, Luca Baldini, Luca Latronico, Lucio Nicolini, Luigia Reboa, Marco Feroci, Massimiliano Razzano, Massimo Minuti, Michele Pinchera, Oberto Citterio, Paolo Soffitta, Primo Attina', Ronaldo Bellazzini, Sergio Di Cosimo, Sergio Fabiani, Stefano Basso, Vincenzo Cotroneo","submitted_at":"2011-05-03T17:21:42Z","abstract_excerpt":"Since the birth of X-ray astronomy, spectral, spatial and timing observation improved dramatically, procuring a wealth of information on the majority of the classes of the celestial sources. Polarimetry, instead, remained basically unprobed. X-ray polarimetry promises to provide additional information procuring two new observable quantities, the degree and the angle of polarization. POLARIX is a mission dedicated to X-ray polarimetry. It exploits the polarimetric response of a Gas Pixel Detector, combined with position sensitivity, that, at the focus of a telescope, results in a huge increase "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1105.0637","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":"2026-05-18T04:23:02Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"iyolNCJif9eq/0utkV1q+huh84eNASmCaER/CPFpYr3wPxDKF1C3jSQlZqfKm34FzbFuHwIXmwPfvsT7mgxlCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T12:59:52.457126Z"},"content_sha256":"60a1ec938b8d6aa927c25166fad9266561298743ab3e30c31e404890a0abc6ad","schema_version":"1.0","event_id":"sha256:60a1ec938b8d6aa927c25166fad9266561298743ab3e30c31e404890a0abc6ad"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/WSNWJK6CZZGQMGD7YVH7M2RAAI/bundle.json","state_url":"https://pith.science/pith/WSNWJK6CZZGQMGD7YVH7M2RAAI/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/WSNWJK6CZZGQMGD7YVH7M2RAAI/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":"2026-05-28T12:59:52Z","links":{"resolver":"https://pith.science/pith/WSNWJK6CZZGQMGD7YVH7M2RAAI","bundle":"https://pith.science/pith/WSNWJK6CZZGQMGD7YVH7M2RAAI/bundle.json","state":"https://pith.science/pith/WSNWJK6CZZGQMGD7YVH7M2RAAI/state.json","well_known_bundle":"https://pith.science/.well-known/pith/WSNWJK6CZZGQMGD7YVH7M2RAAI/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2011:WSNWJK6CZZGQMGD7YVH7M2RAAI","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":"ce327900a0a1a33587565bf88db9a33583a53942c666b1ab7278724a4c5cc9f9","cross_cats_sorted":["astro-ph.HE"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2011-05-03T17:21:42Z","title_canon_sha256":"3029889751d4fd20e5d45856275391a1eab7ebd77be40c52c5802222d6476847"},"schema_version":"1.0","source":{"id":"1105.0637","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1105.0637","created_at":"2026-05-18T04:23:02Z"},{"alias_kind":"arxiv_version","alias_value":"1105.0637v1","created_at":"2026-05-18T04:23:02Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1105.0637","created_at":"2026-05-18T04:23:02Z"},{"alias_kind":"pith_short_12","alias_value":"WSNWJK6CZZGQ","created_at":"2026-05-18T12:26:44Z"},{"alias_kind":"pith_short_16","alias_value":"WSNWJK6CZZGQMGD7","created_at":"2026-05-18T12:26:44Z"},{"alias_kind":"pith_short_8","alias_value":"WSNWJK6C","created_at":"2026-05-18T12:26:44Z"}],"graph_snapshots":[{"event_id":"sha256:60a1ec938b8d6aa927c25166fad9266561298743ab3e30c31e404890a0abc6ad","target":"graph","created_at":"2026-05-18T04:23:02Z","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":"Since the birth of X-ray astronomy, spectral, spatial and timing observation improved dramatically, procuring a wealth of information on the majority of the classes of the celestial sources. Polarimetry, instead, remained basically unprobed. X-ray polarimetry promises to provide additional information procuring two new observable quantities, the degree and the angle of polarization. POLARIX is a mission dedicated to X-ray polarimetry. It exploits the polarimetric response of a Gas Pixel Detector, combined with position sensitivity, that, at the focus of a telescope, results in a huge increase ","authors_text":"Alda Rubini, Alessandro Brez, Alessio Trois, Andrea Argan, Antonella Ferri, Antonio Maria Salonico, Carmelo Sgro', Daniele Spiga, Ennio Morelli, Enrico Costa, Fabio Muleri, Francesco Lazzarotto, Gianpiero Tagliaferri, Giorgio Matt, Giovanni Pareschi, Giuseppe Di Persio, Gloria Spandre, Luca Baldini, Luca Latronico, Lucio Nicolini, Luigia Reboa, Marco Feroci, Massimiliano Razzano, Massimo Minuti, Michele Pinchera, Oberto Citterio, Paolo Soffitta, Primo Attina', Ronaldo Bellazzini, Sergio Di Cosimo, Sergio Fabiani, Stefano Basso, Vincenzo Cotroneo","cross_cats":["astro-ph.HE"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2011-05-03T17:21:42Z","title":"POLARIX: a pathfinder mission of X-ray polarimetry"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1105.0637","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":"sha256:40df8036a1a1926f808da517c7466de6b7f34351419569b3b15753aff8c3d957","target":"record","created_at":"2026-05-18T04:23:02Z","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":"ce327900a0a1a33587565bf88db9a33583a53942c666b1ab7278724a4c5cc9f9","cross_cats_sorted":["astro-ph.HE"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2011-05-03T17:21:42Z","title_canon_sha256":"3029889751d4fd20e5d45856275391a1eab7ebd77be40c52c5802222d6476847"},"schema_version":"1.0","source":{"id":"1105.0637","kind":"arxiv","version":1}},"canonical_sha256":"b49b64abc2ce4d06187fc54ff66a2002164c395c219cfd8113be4940412b5cb5","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"b49b64abc2ce4d06187fc54ff66a2002164c395c219cfd8113be4940412b5cb5","first_computed_at":"2026-05-18T04:23:02.042797Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T04:23:02.042797Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"grZgZtJq9RXs2L7SI2qDKmv8b/SISAMnuHVigCsG1SwgPjUbiaXrBj7gIPQ4F11HOn73KQrUyz9L24waEGtvBA==","signature_status":"signed_v1","signed_at":"2026-05-18T04:23:02.043441Z","signed_message":"canonical_sha256_bytes"},"source_id":"1105.0637","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:40df8036a1a1926f808da517c7466de6b7f34351419569b3b15753aff8c3d957","sha256:60a1ec938b8d6aa927c25166fad9266561298743ab3e30c31e404890a0abc6ad"],"state_sha256":"1eb386ef17818f516697388c8a019ed8ed9916d0b5a2f607a2136e6ae04cbfb8"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"p4hCKKr0yEens+QD13e0nlMVCs85dxl1PmsItMIVE4hnBiOn6iB9kHd4Ok36RVnfSQOs9ilj/4bYj+Y+18h2Bw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-28T12:59:52.459160Z","bundle_sha256":"74c9118401027967149c92e582c47454efbfbe6ea831174a50969e96bb38a513"}}