{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2023:PUTHWT5744HF4BHMZZPRAVJ46D","short_pith_number":"pith:PUTHWT57","canonical_record":{"source":{"id":"2301.02832","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2023-01-07T11:40:47Z","cross_cats_sorted":[],"title_canon_sha256":"b69e078100c64f5588aea6a4d16af5c1939cc51b684c3d83a054c5dbac9ec6ac","abstract_canon_sha256":"a9fc5dcd820548bba54998b003aba237e47901884c9b9b64c1393a17f38080d8"},"schema_version":"1.0"},"canonical_sha256":"7d267b4fbfe70e5e04ecce5f10553cf0e6eac01aea6125e7dc71ce12d2c3252a","source":{"kind":"arxiv","id":"2301.02832","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2301.02832","created_at":"2026-07-05T05:46:34Z"},{"alias_kind":"arxiv_version","alias_value":"2301.02832v1","created_at":"2026-07-05T05:46:34Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2301.02832","created_at":"2026-07-05T05:46:34Z"},{"alias_kind":"pith_short_12","alias_value":"PUTHWT5744HF","created_at":"2026-07-05T05:46:34Z"},{"alias_kind":"pith_short_16","alias_value":"PUTHWT5744HF4BHM","created_at":"2026-07-05T05:46:34Z"},{"alias_kind":"pith_short_8","alias_value":"PUTHWT57","created_at":"2026-07-05T05:46:34Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2023:PUTHWT5744HF4BHMZZPRAVJ46D","target":"record","payload":{"canonical_record":{"source":{"id":"2301.02832","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2023-01-07T11:40:47Z","cross_cats_sorted":[],"title_canon_sha256":"b69e078100c64f5588aea6a4d16af5c1939cc51b684c3d83a054c5dbac9ec6ac","abstract_canon_sha256":"a9fc5dcd820548bba54998b003aba237e47901884c9b9b64c1393a17f38080d8"},"schema_version":"1.0"},"canonical_sha256":"7d267b4fbfe70e5e04ecce5f10553cf0e6eac01aea6125e7dc71ce12d2c3252a","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T05:46:34.534557Z","signature_b64":"edp93xGQPhERgnPVVfnm0TiczGbzRCFfTTZlBURib90LUGhqSH7r8HVL3Zp3CtGFOjRzWu73UWFwdGQEmhbtCA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"7d267b4fbfe70e5e04ecce5f10553cf0e6eac01aea6125e7dc71ce12d2c3252a","last_reissued_at":"2026-07-05T05:46:34.534041Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T05:46:34.534041Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2301.02832","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":"2026-07-05T05:46:34Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"0G8GlsaLGCP0enrE4th5m1jOcFIW1oar9Zt5wE7elsg2+Kmk9w7vE8i6LMrzMn9N/IyqDOlKVpgx9nDhb14NDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-21T06:06:23.566334Z"},"content_sha256":"c26f498bb026e65da14631416250fc0b2bddd787afb4df604e7031b6ba31d859","schema_version":"1.0","event_id":"sha256:c26f498bb026e65da14631416250fc0b2bddd787afb4df604e7031b6ba31d859"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2023:PUTHWT5744HF4BHMZZPRAVJ46D","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"J-PET detection modules based on plastic scintillators for performing studies with positron and positronium beams","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"physics.ins-det","authors_text":"A. Coussat, A. Gajos, B.C. Hiesmayr, C. Curceanu, D. Kumar, E. Czerwinski, E.L. Stepien, E. Perez del Rio, F. Tayefi, G. Korcyl, J. Baran, K. Dulski, K. Eliyan, K. Kacprzak, K. Klimaszewski, K. Tayefi, L. Kaplon, L. Panasa, L. Povolo, L. Raczynski, M. Dadgar, M. Skurzok, N. Chug, P. Konieczka, P. Moskal, R. Caravita, R.S. Brusa, R.Y. Shopa, Shivani, S. Mariazzi, S. Niedzwiecki, S. Parzych, S. Sharma, T. Kozik, W. Krzemien, W. Wislicki","submitted_at":"2023-01-07T11:40:47Z","abstract_excerpt":"The J-PET detector, which consists of inexpensive plastic scintillators, has demonstrated its potential in the study of fundamental physics. In recent years, a prototype with 192 plastic scintillators arranged in 3 layers has been optimized for the study of positronium decays. This allows performing precision tests of discrete symmetries (C, P, T) in the decays of positronium atoms. Moreover, thanks to the possibility of measuring the polarization direction of the photon based on Compton scattering, the predicted entanglement between the linear polarization of annihilation photons in positroni"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2301.02832","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2301.02832/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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":"2026-07-05T05:46:34Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"1uCoV79CCDiYjb1tV+6VEC+4jU4Re7G7FqK88/Ubk59meZxGS7qScqUzfSR7jOVMxZYBef8QmSzh2Abjkc7vDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-21T06:06:23.566692Z"},"content_sha256":"8e504b3b0baf71d5c30656405c220dd79ff925aa7de27217614625d982295269","schema_version":"1.0","event_id":"sha256:8e504b3b0baf71d5c30656405c220dd79ff925aa7de27217614625d982295269"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/PUTHWT5744HF4BHMZZPRAVJ46D/bundle.json","state_url":"https://pith.science/pith/PUTHWT5744HF4BHMZZPRAVJ46D/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/PUTHWT5744HF4BHMZZPRAVJ46D/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":"2026-08-21T06:06:23Z","links":{"resolver":"https://pith.science/pith/PUTHWT5744HF4BHMZZPRAVJ46D","bundle":"https://pith.science/pith/PUTHWT5744HF4BHMZZPRAVJ46D/bundle.json","state":"https://pith.science/pith/PUTHWT5744HF4BHMZZPRAVJ46D/state.json","well_known_bundle":"https://pith.science/.well-known/pith/PUTHWT5744HF4BHMZZPRAVJ46D/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2023:PUTHWT5744HF4BHMZZPRAVJ46D","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":"a9fc5dcd820548bba54998b003aba237e47901884c9b9b64c1393a17f38080d8","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2023-01-07T11:40:47Z","title_canon_sha256":"b69e078100c64f5588aea6a4d16af5c1939cc51b684c3d83a054c5dbac9ec6ac"},"schema_version":"1.0","source":{"id":"2301.02832","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2301.02832","created_at":"2026-07-05T05:46:34Z"},{"alias_kind":"arxiv_version","alias_value":"2301.02832v1","created_at":"2026-07-05T05:46:34Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2301.02832","created_at":"2026-07-05T05:46:34Z"},{"alias_kind":"pith_short_12","alias_value":"PUTHWT5744HF","created_at":"2026-07-05T05:46:34Z"},{"alias_kind":"pith_short_16","alias_value":"PUTHWT5744HF4BHM","created_at":"2026-07-05T05:46:34Z"},{"alias_kind":"pith_short_8","alias_value":"PUTHWT57","created_at":"2026-07-05T05:46:34Z"}],"graph_snapshots":[{"event_id":"sha256:8e504b3b0baf71d5c30656405c220dd79ff925aa7de27217614625d982295269","target":"graph","created_at":"2026-07-05T05:46:34Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/2301.02832/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"The J-PET detector, which consists of inexpensive plastic scintillators, has demonstrated its potential in the study of fundamental physics. In recent years, a prototype with 192 plastic scintillators arranged in 3 layers has been optimized for the study of positronium decays. This allows performing precision tests of discrete symmetries (C, P, T) in the decays of positronium atoms. Moreover, thanks to the possibility of measuring the polarization direction of the photon based on Compton scattering, the predicted entanglement between the linear polarization of annihilation photons in positroni","authors_text":"A. Coussat, A. Gajos, B.C. Hiesmayr, C. Curceanu, D. Kumar, E. Czerwinski, E.L. Stepien, E. Perez del Rio, F. Tayefi, G. Korcyl, J. Baran, K. Dulski, K. Eliyan, K. Kacprzak, K. Klimaszewski, K. Tayefi, L. Kaplon, L. Panasa, L. Povolo, L. Raczynski, M. Dadgar, M. Skurzok, N. Chug, P. Konieczka, P. Moskal, R. Caravita, R.S. Brusa, R.Y. Shopa, Shivani, S. Mariazzi, S. Niedzwiecki, S. Parzych, S. Sharma, T. Kozik, W. Krzemien, W. Wislicki","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2023-01-07T11:40:47Z","title":"J-PET detection modules based on plastic scintillators for performing studies with positron and positronium beams"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2301.02832","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:c26f498bb026e65da14631416250fc0b2bddd787afb4df604e7031b6ba31d859","target":"record","created_at":"2026-07-05T05:46:34Z","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":"a9fc5dcd820548bba54998b003aba237e47901884c9b9b64c1393a17f38080d8","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2023-01-07T11:40:47Z","title_canon_sha256":"b69e078100c64f5588aea6a4d16af5c1939cc51b684c3d83a054c5dbac9ec6ac"},"schema_version":"1.0","source":{"id":"2301.02832","kind":"arxiv","version":1}},"canonical_sha256":"7d267b4fbfe70e5e04ecce5f10553cf0e6eac01aea6125e7dc71ce12d2c3252a","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"7d267b4fbfe70e5e04ecce5f10553cf0e6eac01aea6125e7dc71ce12d2c3252a","first_computed_at":"2026-07-05T05:46:34.534041Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T05:46:34.534041Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"edp93xGQPhERgnPVVfnm0TiczGbzRCFfTTZlBURib90LUGhqSH7r8HVL3Zp3CtGFOjRzWu73UWFwdGQEmhbtCA==","signature_status":"signed_v1","signed_at":"2026-07-05T05:46:34.534557Z","signed_message":"canonical_sha256_bytes"},"source_id":"2301.02832","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:c26f498bb026e65da14631416250fc0b2bddd787afb4df604e7031b6ba31d859","sha256:8e504b3b0baf71d5c30656405c220dd79ff925aa7de27217614625d982295269"],"state_sha256":"af2fc88e6636e4f2f6b6f5836391f502e42237a520b1b970ec6553391ffa4063"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"HkNuVjQOyxBrg/M5zqB2vCZNt6Gonw/K5wQHc8O2nZQDz76+801foyrWSoVSmfXJlvCeOkoXwOBrK9PSg1eNCA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-21T06:06:23.570102Z","bundle_sha256":"fd27b363196e1a81bc13fbac10ba1da7cfc7f5f170ec33fd9aebd1c3dcc7e5f4"}}