{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2007:R365XE7G3Y45K5J3WLIJOE4RGJ","short_pith_number":"pith:R365XE7G","canonical_record":{"source":{"id":"0706.2055","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2007-06-14T08:51:48Z","cross_cats_sorted":[],"title_canon_sha256":"3bf316de29e0a88f5caa92c9d552873a064e98a1ce60fc48bb2f049375f80383","abstract_canon_sha256":"edee681538f56fb00f433baef2597d51b2881459372d405c4da294b0c69b469d"},"schema_version":"1.0"},"canonical_sha256":"8efddb93e6de39d5753bb2d0971391324bceea41cece16bf5f497af1cdf1f1f8","source":{"kind":"arxiv","id":"0706.2055","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0706.2055","created_at":"2026-07-04T15:21:16Z"},{"alias_kind":"arxiv_version","alias_value":"0706.2055v1","created_at":"2026-07-04T15:21:16Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0706.2055","created_at":"2026-07-04T15:21:16Z"},{"alias_kind":"pith_short_12","alias_value":"R365XE7G3Y45","created_at":"2026-07-04T15:21:16Z"},{"alias_kind":"pith_short_16","alias_value":"R365XE7G3Y45K5J3","created_at":"2026-07-04T15:21:16Z"},{"alias_kind":"pith_short_8","alias_value":"R365XE7G","created_at":"2026-07-04T15:21:16Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2007:R365XE7G3Y45K5J3WLIJOE4RGJ","target":"record","payload":{"canonical_record":{"source":{"id":"0706.2055","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2007-06-14T08:51:48Z","cross_cats_sorted":[],"title_canon_sha256":"3bf316de29e0a88f5caa92c9d552873a064e98a1ce60fc48bb2f049375f80383","abstract_canon_sha256":"edee681538f56fb00f433baef2597d51b2881459372d405c4da294b0c69b469d"},"schema_version":"1.0"},"canonical_sha256":"8efddb93e6de39d5753bb2d0971391324bceea41cece16bf5f497af1cdf1f1f8","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-04T15:21:16.472658Z","signature_b64":"+yRGCOBLDic6B7DX+Lxtfa9cSJc0tWvSPvXi8jrTQEcqxXtx7IS5t7FbE6kfCZZUU8F1QCbP/+qkgkIPeWVXBA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"8efddb93e6de39d5753bb2d0971391324bceea41cece16bf5f497af1cdf1f1f8","last_reissued_at":"2026-07-04T15:21:16.472256Z","signature_status":"signed_v1","first_computed_at":"2026-07-04T15:21:16.472256Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"0706.2055","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":"2026-07-04T15:21:16Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"HLtPU5pqKgiVRBOCJ5tBqY7HuXjqjJaD8TA7lHiAjbkLFO8KbMTZ4TqXPqs+ZbhwzsoR0GX25EVhOjSnQ6WgAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-20T01:49:19.602688Z"},"content_sha256":"52f11f3c3b2b89419af788e01bc57c2a40854f766f641855db9f43109dc0b287","schema_version":"1.0","event_id":"sha256:52f11f3c3b2b89419af788e01bc57c2a40854f766f641855db9f43109dc0b287"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2007:R365XE7G3Y45K5J3WLIJOE4RGJ","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The TACTIC atmospheric Cherenkov Imaging telescope","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"A.K. Tickoo, H.C. Goyal, K. Chanchalani, K.K. Yadav, K. Venugopal, M.K. Koul, M. Kothari, M. Sharma, N. Bhatt, N. Chouhan, N. Kumar, P. Chandra, R.C. Rannot, R.K. Kaul, R. Koul, S. Bhattacharyya, S.K. Kaul, S. Kotwal, S.R. Kaul, S. Sahayanathan, S. Thoudam, V.K. Dhar","submitted_at":"2007-06-14T08:51:48Z","abstract_excerpt":"The TACTIC $\\gamma$-ray telescope, equipped with a light collector of area $\\sim$9.5m$^2$ and a medium resolution imaging camera of 349-pixels, has been in operation at Mt.Abu, India since 2001. This paper describes the main features of its various subsystems and its overall performance with regard to (a) tracking accuracy of its 2-axes drive system, (b) spot size of the light collector, (c) back-end signal processing electronics and topological trigger generation scheme, (d) data acquisition and control system and (e) relative and absolute gain calibration methodology. Using a trigger field o"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0706.2055","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/0706.2055/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":"2026-07-04T15:21:16Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"8R1ZahPEq+7dJsO06rGwewrhClS5WcM8TIaxQRTFb/2zYjoWFQd2rfgx5nxAkf/Ol85ZW/11+NgR+LuXP9GMBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-20T01:49:19.603468Z"},"content_sha256":"41d916ef594b269c75f7d22c7e0931df590c7f54b942eeaf3b7ab204269493d4","schema_version":"1.0","event_id":"sha256:41d916ef594b269c75f7d22c7e0931df590c7f54b942eeaf3b7ab204269493d4"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/R365XE7G3Y45K5J3WLIJOE4RGJ/bundle.json","state_url":"https://pith.science/pith/R365XE7G3Y45K5J3WLIJOE4RGJ/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/R365XE7G3Y45K5J3WLIJOE4RGJ/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":"2026-08-20T01:49:19Z","links":{"resolver":"https://pith.science/pith/R365XE7G3Y45K5J3WLIJOE4RGJ","bundle":"https://pith.science/pith/R365XE7G3Y45K5J3WLIJOE4RGJ/bundle.json","state":"https://pith.science/pith/R365XE7G3Y45K5J3WLIJOE4RGJ/state.json","well_known_bundle":"https://pith.science/.well-known/pith/R365XE7G3Y45K5J3WLIJOE4RGJ/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2007:R365XE7G3Y45K5J3WLIJOE4RGJ","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":"edee681538f56fb00f433baef2597d51b2881459372d405c4da294b0c69b469d","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2007-06-14T08:51:48Z","title_canon_sha256":"3bf316de29e0a88f5caa92c9d552873a064e98a1ce60fc48bb2f049375f80383"},"schema_version":"1.0","source":{"id":"0706.2055","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0706.2055","created_at":"2026-07-04T15:21:16Z"},{"alias_kind":"arxiv_version","alias_value":"0706.2055v1","created_at":"2026-07-04T15:21:16Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0706.2055","created_at":"2026-07-04T15:21:16Z"},{"alias_kind":"pith_short_12","alias_value":"R365XE7G3Y45","created_at":"2026-07-04T15:21:16Z"},{"alias_kind":"pith_short_16","alias_value":"R365XE7G3Y45K5J3","created_at":"2026-07-04T15:21:16Z"},{"alias_kind":"pith_short_8","alias_value":"R365XE7G","created_at":"2026-07-04T15:21:16Z"}],"graph_snapshots":[{"event_id":"sha256:41d916ef594b269c75f7d22c7e0931df590c7f54b942eeaf3b7ab204269493d4","target":"graph","created_at":"2026-07-04T15:21:16Z","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/0706.2055/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"The TACTIC $\\gamma$-ray telescope, equipped with a light collector of area $\\sim$9.5m$^2$ and a medium resolution imaging camera of 349-pixels, has been in operation at Mt.Abu, India since 2001. This paper describes the main features of its various subsystems and its overall performance with regard to (a) tracking accuracy of its 2-axes drive system, (b) spot size of the light collector, (c) back-end signal processing electronics and topological trigger generation scheme, (d) data acquisition and control system and (e) relative and absolute gain calibration methodology. Using a trigger field o","authors_text":"A.K. Tickoo, H.C. Goyal, K. Chanchalani, K.K. Yadav, K. Venugopal, M.K. Koul, M. Kothari, M. Sharma, N. Bhatt, N. Chouhan, N. Kumar, P. Chandra, R.C. Rannot, R.K. Kaul, R. Koul, S. Bhattacharyya, S.K. Kaul, S. Kotwal, S.R. Kaul, S. Sahayanathan, S. Thoudam, V.K. Dhar","cross_cats":[],"headline":"","license":"","primary_cat":"astro-ph","submitted_at":"2007-06-14T08:51:48Z","title":"The TACTIC atmospheric Cherenkov Imaging telescope"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0706.2055","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":"sha256:52f11f3c3b2b89419af788e01bc57c2a40854f766f641855db9f43109dc0b287","target":"record","created_at":"2026-07-04T15:21:16Z","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":"edee681538f56fb00f433baef2597d51b2881459372d405c4da294b0c69b469d","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2007-06-14T08:51:48Z","title_canon_sha256":"3bf316de29e0a88f5caa92c9d552873a064e98a1ce60fc48bb2f049375f80383"},"schema_version":"1.0","source":{"id":"0706.2055","kind":"arxiv","version":1}},"canonical_sha256":"8efddb93e6de39d5753bb2d0971391324bceea41cece16bf5f497af1cdf1f1f8","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"8efddb93e6de39d5753bb2d0971391324bceea41cece16bf5f497af1cdf1f1f8","first_computed_at":"2026-07-04T15:21:16.472256Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T15:21:16.472256Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"+yRGCOBLDic6B7DX+Lxtfa9cSJc0tWvSPvXi8jrTQEcqxXtx7IS5t7FbE6kfCZZUU8F1QCbP/+qkgkIPeWVXBA==","signature_status":"signed_v1","signed_at":"2026-07-04T15:21:16.472658Z","signed_message":"canonical_sha256_bytes"},"source_id":"0706.2055","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:52f11f3c3b2b89419af788e01bc57c2a40854f766f641855db9f43109dc0b287","sha256:41d916ef594b269c75f7d22c7e0931df590c7f54b942eeaf3b7ab204269493d4"],"state_sha256":"891e1b64767632297b305a260e2e4b71f7eb54e39719faf5118df9a1b3b73067"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"RMEf2EGletgNXRtk5KpffoXvR4/QjPCsTn4yWEuIJe75IflPvNYZ1aD96Y2FfJm7E5XhHye3Bdr1OXk+ivrHCw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-20T01:49:19.611871Z","bundle_sha256":"676e80ad1af8a9a846df536f3ce6fdfad3a20922f835dc6d85f07c554c8a364f"}}