{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2024:4MIIQA3B7XPJZOGAL6SGZ7QPEB","short_pith_number":"pith:4MIIQA3B","canonical_record":{"source":{"id":"2409.08822","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2024-09-13T13:36:30Z","cross_cats_sorted":[],"title_canon_sha256":"39720a1a3586033a59561b9f463ce147eb3f043f34e70257a446fe6d645318d9","abstract_canon_sha256":"9d1fa54636d79990555a687a9a824e990d6e6b043f061e1900388b5f92aff16d"},"schema_version":"1.0"},"canonical_sha256":"e310880361fdde9cb8c05fa46cfe0f2059153f3caa041e1229ee0b09854242bb","source":{"kind":"arxiv","id":"2409.08822","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2409.08822","created_at":"2026-07-05T12:10:53Z"},{"alias_kind":"arxiv_version","alias_value":"2409.08822v2","created_at":"2026-07-05T12:10:53Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2409.08822","created_at":"2026-07-05T12:10:53Z"},{"alias_kind":"pith_short_12","alias_value":"4MIIQA3B7XPJ","created_at":"2026-07-05T12:10:53Z"},{"alias_kind":"pith_short_16","alias_value":"4MIIQA3B7XPJZOGA","created_at":"2026-07-05T12:10:53Z"},{"alias_kind":"pith_short_8","alias_value":"4MIIQA3B","created_at":"2026-07-05T12:10:53Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2024:4MIIQA3B7XPJZOGAL6SGZ7QPEB","target":"record","payload":{"canonical_record":{"source":{"id":"2409.08822","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2024-09-13T13:36:30Z","cross_cats_sorted":[],"title_canon_sha256":"39720a1a3586033a59561b9f463ce147eb3f043f34e70257a446fe6d645318d9","abstract_canon_sha256":"9d1fa54636d79990555a687a9a824e990d6e6b043f061e1900388b5f92aff16d"},"schema_version":"1.0"},"canonical_sha256":"e310880361fdde9cb8c05fa46cfe0f2059153f3caa041e1229ee0b09854242bb","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T12:10:53.347035Z","signature_b64":"tYGZZDeOxMhcMrYEGg2b6IcwPPrIVqYBtWgSNJOwyWjtTRSetjKP+K35uq7ONqxi1LTo+43ft81YJf7Uyt/HCA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"e310880361fdde9cb8c05fa46cfe0f2059153f3caa041e1229ee0b09854242bb","last_reissued_at":"2026-07-05T12:10:53.346430Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T12:10:53.346430Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2409.08822","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T12:10:53Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"tI5fY6W3mrmRCGAz56VBACAv6HGG+dwO/+b7DQ8C0kTOEwJzpyW5jM1bOmYsypbjAl89TMo9t64FpHeFlYpcCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-03T21:13:01.404384Z"},"content_sha256":"c49f44e7d692c8730467c725181b7871b2146025a564a9cb492f4fb3de19e7d0","schema_version":"1.0","event_id":"sha256:c49f44e7d692c8730467c725181b7871b2146025a564a9cb492f4fb3de19e7d0"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2024:4MIIQA3B7XPJZOGAL6SGZ7QPEB","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Development of a Compton Imager Setup","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.IM","authors_text":"Abhijeet Ghodgaonkar, Aditi Marathe, Amit Shetye, Anuraag Arya, Arpit Patel, Gaurav Waratkar, Harmanjeet Singh Bilkhu, Hrishikesh Belatikar, Jayprakash G. Koyande, N. P. S. Mithun, Pranav Page, Sandeep Vishwakarma, Sanjoli Narang, Santosh Vadawale, Shriharsh Tendulkar, Siddharth Tallur, Sourav Palit, Sudhanshu Nimbalkar, Varun Bhalerao","submitted_at":"2024-09-13T13:36:30Z","abstract_excerpt":"Hard X-ray photons with energies in the range of hundreds of keV typically undergo Compton scattering when they are incident on a detector. In this process, an incident photon deposits a fraction of its energy at the point of incidence and continues onwards with a change in direction that depends on the amount of energy deposited. By using a pair of detectors to detect the point of incidence and the direction of the scattered photon, we can calculate the scattering direction and angle. The position of a source in the sky can be reconstructed using many Compton photon pairs from a source. We de"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2409.08822","kind":"arxiv","version":2},"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/2409.08822/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":"2026-07-05T12:10:53Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"vnab6bFGToelEtHZyXccvTr7gEdpFLwNWBeMSr6Cx4wm2S3iIQjsuqDWZU1RisJIrBczrlrSSF6etrf4OJj2AA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-03T21:13:01.404906Z"},"content_sha256":"9be0c4e2629ea0ff1757398215191cef41140fe960fa4182b269ce25706d0d54","schema_version":"1.0","event_id":"sha256:9be0c4e2629ea0ff1757398215191cef41140fe960fa4182b269ce25706d0d54"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/4MIIQA3B7XPJZOGAL6SGZ7QPEB/bundle.json","state_url":"https://pith.science/pith/4MIIQA3B7XPJZOGAL6SGZ7QPEB/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/4MIIQA3B7XPJZOGAL6SGZ7QPEB/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":"2026-08-03T21:13:01Z","links":{"resolver":"https://pith.science/pith/4MIIQA3B7XPJZOGAL6SGZ7QPEB","bundle":"https://pith.science/pith/4MIIQA3B7XPJZOGAL6SGZ7QPEB/bundle.json","state":"https://pith.science/pith/4MIIQA3B7XPJZOGAL6SGZ7QPEB/state.json","well_known_bundle":"https://pith.science/.well-known/pith/4MIIQA3B7XPJZOGAL6SGZ7QPEB/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2024:4MIIQA3B7XPJZOGAL6SGZ7QPEB","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":"9d1fa54636d79990555a687a9a824e990d6e6b043f061e1900388b5f92aff16d","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2024-09-13T13:36:30Z","title_canon_sha256":"39720a1a3586033a59561b9f463ce147eb3f043f34e70257a446fe6d645318d9"},"schema_version":"1.0","source":{"id":"2409.08822","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2409.08822","created_at":"2026-07-05T12:10:53Z"},{"alias_kind":"arxiv_version","alias_value":"2409.08822v2","created_at":"2026-07-05T12:10:53Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2409.08822","created_at":"2026-07-05T12:10:53Z"},{"alias_kind":"pith_short_12","alias_value":"4MIIQA3B7XPJ","created_at":"2026-07-05T12:10:53Z"},{"alias_kind":"pith_short_16","alias_value":"4MIIQA3B7XPJZOGA","created_at":"2026-07-05T12:10:53Z"},{"alias_kind":"pith_short_8","alias_value":"4MIIQA3B","created_at":"2026-07-05T12:10:53Z"}],"graph_snapshots":[{"event_id":"sha256:9be0c4e2629ea0ff1757398215191cef41140fe960fa4182b269ce25706d0d54","target":"graph","created_at":"2026-07-05T12:10:53Z","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/2409.08822/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Hard X-ray photons with energies in the range of hundreds of keV typically undergo Compton scattering when they are incident on a detector. In this process, an incident photon deposits a fraction of its energy at the point of incidence and continues onwards with a change in direction that depends on the amount of energy deposited. By using a pair of detectors to detect the point of incidence and the direction of the scattered photon, we can calculate the scattering direction and angle. The position of a source in the sky can be reconstructed using many Compton photon pairs from a source. We de","authors_text":"Abhijeet Ghodgaonkar, Aditi Marathe, Amit Shetye, Anuraag Arya, Arpit Patel, Gaurav Waratkar, Harmanjeet Singh Bilkhu, Hrishikesh Belatikar, Jayprakash G. Koyande, N. P. S. Mithun, Pranav Page, Sandeep Vishwakarma, Sanjoli Narang, Santosh Vadawale, Shriharsh Tendulkar, Siddharth Tallur, Sourav Palit, Sudhanshu Nimbalkar, Varun Bhalerao","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2024-09-13T13:36:30Z","title":"Development of a Compton Imager Setup"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2409.08822","kind":"arxiv","version":2},"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:c49f44e7d692c8730467c725181b7871b2146025a564a9cb492f4fb3de19e7d0","target":"record","created_at":"2026-07-05T12:10:53Z","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":"9d1fa54636d79990555a687a9a824e990d6e6b043f061e1900388b5f92aff16d","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2024-09-13T13:36:30Z","title_canon_sha256":"39720a1a3586033a59561b9f463ce147eb3f043f34e70257a446fe6d645318d9"},"schema_version":"1.0","source":{"id":"2409.08822","kind":"arxiv","version":2}},"canonical_sha256":"e310880361fdde9cb8c05fa46cfe0f2059153f3caa041e1229ee0b09854242bb","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"e310880361fdde9cb8c05fa46cfe0f2059153f3caa041e1229ee0b09854242bb","first_computed_at":"2026-07-05T12:10:53.346430Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T12:10:53.346430Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"tYGZZDeOxMhcMrYEGg2b6IcwPPrIVqYBtWgSNJOwyWjtTRSetjKP+K35uq7ONqxi1LTo+43ft81YJf7Uyt/HCA==","signature_status":"signed_v1","signed_at":"2026-07-05T12:10:53.347035Z","signed_message":"canonical_sha256_bytes"},"source_id":"2409.08822","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:c49f44e7d692c8730467c725181b7871b2146025a564a9cb492f4fb3de19e7d0","sha256:9be0c4e2629ea0ff1757398215191cef41140fe960fa4182b269ce25706d0d54"],"state_sha256":"270d72e1f2650eefb65206b36d1c897864e76ed660abb5c8385139bb9ae8150e"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"E6gvX48x4zZjdyjpP4VJc8MdHKIe2igTIkcvBBIR5S72E9IM2kKduRiEKoWKGb8lA7F3+hfn1YX/h2TqyxN5CA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-03T21:13:01.409855Z","bundle_sha256":"943300c8e48f9e0cea446fa6c59ba86a15b7759bf7945fdf389fb88940120579"}}