{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2017:EUWZYARTFALWPIEDPOF7EHG3FZ","short_pith_number":"pith:EUWZYART","canonical_record":{"source":{"id":"1707.00244","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2017-07-02T06:10:41Z","cross_cats_sorted":[],"title_canon_sha256":"7448fc4740e796223b465585e8bc40d5bd644732f0b5991555bbc032c45413fa","abstract_canon_sha256":"7ecbd8bdc84ad8713e291d86d8459c7d4470383469aa792d5dcb3b61d05ef929"},"schema_version":"1.0"},"canonical_sha256":"252d9c0233281767a0837b8bf21cdb2e68d083baaa3bd21284b425092ad5b6bd","source":{"kind":"arxiv","id":"1707.00244","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1707.00244","created_at":"2026-05-18T00:41:03Z"},{"alias_kind":"arxiv_version","alias_value":"1707.00244v1","created_at":"2026-05-18T00:41:03Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1707.00244","created_at":"2026-05-18T00:41:03Z"},{"alias_kind":"pith_short_12","alias_value":"EUWZYARTFALW","created_at":"2026-05-18T12:31:12Z"},{"alias_kind":"pith_short_16","alias_value":"EUWZYARTFALWPIED","created_at":"2026-05-18T12:31:12Z"},{"alias_kind":"pith_short_8","alias_value":"EUWZYART","created_at":"2026-05-18T12:31:12Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2017:EUWZYARTFALWPIEDPOF7EHG3FZ","target":"record","payload":{"canonical_record":{"source":{"id":"1707.00244","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2017-07-02T06:10:41Z","cross_cats_sorted":[],"title_canon_sha256":"7448fc4740e796223b465585e8bc40d5bd644732f0b5991555bbc032c45413fa","abstract_canon_sha256":"7ecbd8bdc84ad8713e291d86d8459c7d4470383469aa792d5dcb3b61d05ef929"},"schema_version":"1.0"},"canonical_sha256":"252d9c0233281767a0837b8bf21cdb2e68d083baaa3bd21284b425092ad5b6bd","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:41:03.976612Z","signature_b64":"0RzqMtp7VXF3PX519QjH+KXpKtgjpzyRWdHG0vo38MqDI2oaMB/Ii9e2qOT6jFNyDV3MykzAVo9LcEKhYmP4AA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"252d9c0233281767a0837b8bf21cdb2e68d083baaa3bd21284b425092ad5b6bd","last_reissued_at":"2026-05-18T00:41:03.975986Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:41:03.975986Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1707.00244","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":"2026-05-18T00:41:03Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"aAjE+C/UV85u8fYFW3h5RGf4KjGhh3PNVUsrCI0aUHxsukl0F7Ks9+01bbsES3Kvu+gLA3/VK5fzwlxknhIXAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-02T10:50:30.177807Z"},"content_sha256":"74b056bfa3acdc4c445f170a179ca2048d040373395a16c6beee24afbe39bc02","schema_version":"1.0","event_id":"sha256:74b056bfa3acdc4c445f170a179ca2048d040373395a16c6beee24afbe39bc02"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2017:EUWZYARTFALWPIEDPOF7EHG3FZ","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Study of high energy phenomena from near space using low-cost meteorological balloons","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.IM","authors_text":"Arnab Bhattacharya, Debashis Bhowmick, Ritabrata Sarkar, Sandip K. Chakrabarti","submitted_at":"2017-07-02T06:10:41Z","abstract_excerpt":"Indian Centre for Space Physics has taken a novel strategy to study low energy cosmic rays and astrophysical X-ray sources which involve very light weight payloads up to about five kilograms on board a single or multiple balloons which are usually used for meteorological purposes. The mission duration could be anywhere from 3-12 hours. Our strategy provides extreme flexibility in mission preparation and its operation using a very economical budget. There are several limitations but our innovative approach has been able to extract significant amount of scientific data out of these missions. So "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1707.00244","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":"2026-05-18T00:41:03Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"+9eUmfoyAH0Map1gdig4tmXRqsMafGkjpAKGAXpAdYrucSr5E6rz1oL2pMN3r9ruBApCaVA1XMae8Pa5gMAVAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-02T10:50:30.178144Z"},"content_sha256":"a2ce6eee99181404817e6e0262fe799a567fa3ec9ea8759277fd47d0ec37c817","schema_version":"1.0","event_id":"sha256:a2ce6eee99181404817e6e0262fe799a567fa3ec9ea8759277fd47d0ec37c817"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/EUWZYARTFALWPIEDPOF7EHG3FZ/bundle.json","state_url":"https://pith.science/pith/EUWZYARTFALWPIEDPOF7EHG3FZ/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/EUWZYARTFALWPIEDPOF7EHG3FZ/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":"2026-06-02T10:50:30Z","links":{"resolver":"https://pith.science/pith/EUWZYARTFALWPIEDPOF7EHG3FZ","bundle":"https://pith.science/pith/EUWZYARTFALWPIEDPOF7EHG3FZ/bundle.json","state":"https://pith.science/pith/EUWZYARTFALWPIEDPOF7EHG3FZ/state.json","well_known_bundle":"https://pith.science/.well-known/pith/EUWZYARTFALWPIEDPOF7EHG3FZ/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:EUWZYARTFALWPIEDPOF7EHG3FZ","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":"7ecbd8bdc84ad8713e291d86d8459c7d4470383469aa792d5dcb3b61d05ef929","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2017-07-02T06:10:41Z","title_canon_sha256":"7448fc4740e796223b465585e8bc40d5bd644732f0b5991555bbc032c45413fa"},"schema_version":"1.0","source":{"id":"1707.00244","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1707.00244","created_at":"2026-05-18T00:41:03Z"},{"alias_kind":"arxiv_version","alias_value":"1707.00244v1","created_at":"2026-05-18T00:41:03Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1707.00244","created_at":"2026-05-18T00:41:03Z"},{"alias_kind":"pith_short_12","alias_value":"EUWZYARTFALW","created_at":"2026-05-18T12:31:12Z"},{"alias_kind":"pith_short_16","alias_value":"EUWZYARTFALWPIED","created_at":"2026-05-18T12:31:12Z"},{"alias_kind":"pith_short_8","alias_value":"EUWZYART","created_at":"2026-05-18T12:31:12Z"}],"graph_snapshots":[{"event_id":"sha256:a2ce6eee99181404817e6e0262fe799a567fa3ec9ea8759277fd47d0ec37c817","target":"graph","created_at":"2026-05-18T00:41:03Z","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":"Indian Centre for Space Physics has taken a novel strategy to study low energy cosmic rays and astrophysical X-ray sources which involve very light weight payloads up to about five kilograms on board a single or multiple balloons which are usually used for meteorological purposes. The mission duration could be anywhere from 3-12 hours. Our strategy provides extreme flexibility in mission preparation and its operation using a very economical budget. There are several limitations but our innovative approach has been able to extract significant amount of scientific data out of these missions. So ","authors_text":"Arnab Bhattacharya, Debashis Bhowmick, Ritabrata Sarkar, Sandip K. Chakrabarti","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2017-07-02T06:10:41Z","title":"Study of high energy phenomena from near space using low-cost meteorological balloons"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1707.00244","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":"sha256:74b056bfa3acdc4c445f170a179ca2048d040373395a16c6beee24afbe39bc02","target":"record","created_at":"2026-05-18T00:41:03Z","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":"7ecbd8bdc84ad8713e291d86d8459c7d4470383469aa792d5dcb3b61d05ef929","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2017-07-02T06:10:41Z","title_canon_sha256":"7448fc4740e796223b465585e8bc40d5bd644732f0b5991555bbc032c45413fa"},"schema_version":"1.0","source":{"id":"1707.00244","kind":"arxiv","version":1}},"canonical_sha256":"252d9c0233281767a0837b8bf21cdb2e68d083baaa3bd21284b425092ad5b6bd","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"252d9c0233281767a0837b8bf21cdb2e68d083baaa3bd21284b425092ad5b6bd","first_computed_at":"2026-05-18T00:41:03.975986Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:41:03.975986Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"0RzqMtp7VXF3PX519QjH+KXpKtgjpzyRWdHG0vo38MqDI2oaMB/Ii9e2qOT6jFNyDV3MykzAVo9LcEKhYmP4AA==","signature_status":"signed_v1","signed_at":"2026-05-18T00:41:03.976612Z","signed_message":"canonical_sha256_bytes"},"source_id":"1707.00244","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:74b056bfa3acdc4c445f170a179ca2048d040373395a16c6beee24afbe39bc02","sha256:a2ce6eee99181404817e6e0262fe799a567fa3ec9ea8759277fd47d0ec37c817"],"state_sha256":"9ed569649d2e2d312ca13e2476f579207e27a2d288cf61ef8ffb8059884f4527"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"iHTGgy5o3UqBbqSfnQscljiCvhkEtonIdcucY4A3OGlN4/5DToKfRh6pI5J659UGxSr3lJvDazJhFZJugM3mDg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-02T10:50:30.179962Z","bundle_sha256":"9f24c3f057868213d2a38cf5697f8ea26ee2ab3ea25d444b0114f20e23031b95"}}