{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2025:H2ZDWA24CNRQC3RBK5HEPLL2HM","short_pith_number":"pith:H2ZDWA24","canonical_record":{"source":{"id":"2506.16769","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2025-06-20T06:09:50Z","cross_cats_sorted":["astro-ph.HE"],"title_canon_sha256":"e90675702272e128f2c929b59d86c6d80b65b7a7b4d20daf33714625394f55f3","abstract_canon_sha256":"1eb1075981887a71711399239dba89cd4a889309a5b6e7c00174c4388f7081fe"},"schema_version":"1.0"},"canonical_sha256":"3eb23b035c1363016e21574e47ad7a3b12640bd2afff77eaa7dd8ba219a37b08","source":{"kind":"arxiv","id":"2506.16769","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2506.16769","created_at":"2026-07-05T11:37:23Z"},{"alias_kind":"arxiv_version","alias_value":"2506.16769v1","created_at":"2026-07-05T11:37:23Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2506.16769","created_at":"2026-07-05T11:37:23Z"},{"alias_kind":"pith_short_12","alias_value":"H2ZDWA24CNRQ","created_at":"2026-07-05T11:37:23Z"},{"alias_kind":"pith_short_16","alias_value":"H2ZDWA24CNRQC3RB","created_at":"2026-07-05T11:37:23Z"},{"alias_kind":"pith_short_8","alias_value":"H2ZDWA24","created_at":"2026-07-05T11:37:23Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2025:H2ZDWA24CNRQC3RBK5HEPLL2HM","target":"record","payload":{"canonical_record":{"source":{"id":"2506.16769","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2025-06-20T06:09:50Z","cross_cats_sorted":["astro-ph.HE"],"title_canon_sha256":"e90675702272e128f2c929b59d86c6d80b65b7a7b4d20daf33714625394f55f3","abstract_canon_sha256":"1eb1075981887a71711399239dba89cd4a889309a5b6e7c00174c4388f7081fe"},"schema_version":"1.0"},"canonical_sha256":"3eb23b035c1363016e21574e47ad7a3b12640bd2afff77eaa7dd8ba219a37b08","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T11:37:23.889520Z","signature_b64":"mqYoLDwWfN/G4oac4r84Per9R2CDx/if4m3ustPufbkd5bs54X6sQXtvdVQA1LIpCyf/JcA67o5SJR40O2K0DA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"3eb23b035c1363016e21574e47ad7a3b12640bd2afff77eaa7dd8ba219a37b08","last_reissued_at":"2026-07-05T11:37:23.889009Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T11:37:23.889009Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2506.16769","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":"2026-07-05T11:37:23Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"hSmkZsoLPlrcxjcyVduwPgE92dPFydlG8yTm/tqbKBzamuiXimBgJob5W3ql1lOHu6H/MuNyOlBo2JHWHnuvCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-17T22:29:22.483082Z"},"content_sha256":"8decfdc584464f15840ac13d43bd6c06b1965740803f2032e3bf141ec394f795","schema_version":"1.0","event_id":"sha256:8decfdc584464f15840ac13d43bd6c06b1965740803f2032e3bf141ec394f795"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2025:H2ZDWA24CNRQC3RBK5HEPLL2HM","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The Indian Pulsar Timing Array Data Release 2: I. Dataset and Timing Analysis","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.HE"],"primary_cat":"astro-ph.IM","authors_text":"Abhimanyu Susobhanan, Adya Shukla, A. Gopakumar, Aman Srivastava, Amarnath, Arul Pandian B, Avinash Kumar Paladi, Bhal Chandra Joshi, Churchil Dwivedi, Debabrata Deb, Deep Maity, Dhruv Kumar, Fazal Kareem, Hemanga Tahbildar, Himanshu Grover, Jaikhomba Singha, Jibin Jose, Kaustubh Rai, Kavya Shaji, Keitaro Takahashi, Kunjal Vara, M. A. Krishnakumar, Manjari Bagchi, Manoneeta Chakraborty, Manpreet Singh, Mayuresh Surnis, Neelam Dhanda Batra, Nobleson K, P. Arumugam, Prabu Thiagaraj, Pragna Mamidipaka, Pratik Tarafdar, Prerna Rana, Ryo Kato, Sarbartha Sengupta, Shantanu Desai, Shaswata Chowdhury, Shebin Jose Jacob, S Jagadeesh, Sushovan Mondal, Swetha Arumugam, Toki Ogi, Vaishnavi Vyasraj, Vinay Bharambe, Yashwant Gupta, Yogesh Maan, Zenia Zuraiq","submitted_at":"2025-06-20T06:09:50Z","abstract_excerpt":"The Indian Pulsar Timing Array (InPTA) employs unique features of the upgraded Giant Metrewave Radio Telescope (uGMRT) to monitor dozens of the International Pulsar Timing Array (IPTA) millisecond pulsars (MSPs), simultaneously in the 300-500 MHz and the 1260-1460 MHz bands. This dual-band approach ensures that any frequency-dependent delays are accurately characterized, significantly improving the timing precision for pulsar observations, which is crucial for pulsar timing arrays. We present details of InPTA's second data release that involves 7 yrs of data on 27 IPTA MSPs. This includes sub-"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2506.16769","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/2506.16769/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":"2026-07-05T11:37:23Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Hy2TmlERN89xmD/xIeK7qeAdRuCZBr4W7C5N/tAuFMqJKVu54m/Az8mll6wCFddxlo7SMSXd4wno1J5jnln8Dw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-17T22:29:22.484041Z"},"content_sha256":"1cf6a75d6c3861bb8bf59de1f534a00174b71796d66544c6dcdad68d77e02a9f","schema_version":"1.0","event_id":"sha256:1cf6a75d6c3861bb8bf59de1f534a00174b71796d66544c6dcdad68d77e02a9f"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/H2ZDWA24CNRQC3RBK5HEPLL2HM/bundle.json","state_url":"https://pith.science/pith/H2ZDWA24CNRQC3RBK5HEPLL2HM/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/H2ZDWA24CNRQC3RBK5HEPLL2HM/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":"2026-08-17T22:29:22Z","links":{"resolver":"https://pith.science/pith/H2ZDWA24CNRQC3RBK5HEPLL2HM","bundle":"https://pith.science/pith/H2ZDWA24CNRQC3RBK5HEPLL2HM/bundle.json","state":"https://pith.science/pith/H2ZDWA24CNRQC3RBK5HEPLL2HM/state.json","well_known_bundle":"https://pith.science/.well-known/pith/H2ZDWA24CNRQC3RBK5HEPLL2HM/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2025:H2ZDWA24CNRQC3RBK5HEPLL2HM","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":"1eb1075981887a71711399239dba89cd4a889309a5b6e7c00174c4388f7081fe","cross_cats_sorted":["astro-ph.HE"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2025-06-20T06:09:50Z","title_canon_sha256":"e90675702272e128f2c929b59d86c6d80b65b7a7b4d20daf33714625394f55f3"},"schema_version":"1.0","source":{"id":"2506.16769","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2506.16769","created_at":"2026-07-05T11:37:23Z"},{"alias_kind":"arxiv_version","alias_value":"2506.16769v1","created_at":"2026-07-05T11:37:23Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2506.16769","created_at":"2026-07-05T11:37:23Z"},{"alias_kind":"pith_short_12","alias_value":"H2ZDWA24CNRQ","created_at":"2026-07-05T11:37:23Z"},{"alias_kind":"pith_short_16","alias_value":"H2ZDWA24CNRQC3RB","created_at":"2026-07-05T11:37:23Z"},{"alias_kind":"pith_short_8","alias_value":"H2ZDWA24","created_at":"2026-07-05T11:37:23Z"}],"graph_snapshots":[{"event_id":"sha256:1cf6a75d6c3861bb8bf59de1f534a00174b71796d66544c6dcdad68d77e02a9f","target":"graph","created_at":"2026-07-05T11:37:23Z","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/2506.16769/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"The Indian Pulsar Timing Array (InPTA) employs unique features of the upgraded Giant Metrewave Radio Telescope (uGMRT) to monitor dozens of the International Pulsar Timing Array (IPTA) millisecond pulsars (MSPs), simultaneously in the 300-500 MHz and the 1260-1460 MHz bands. This dual-band approach ensures that any frequency-dependent delays are accurately characterized, significantly improving the timing precision for pulsar observations, which is crucial for pulsar timing arrays. We present details of InPTA's second data release that involves 7 yrs of data on 27 IPTA MSPs. This includes sub-","authors_text":"Abhimanyu Susobhanan, Adya Shukla, A. Gopakumar, Aman Srivastava, Amarnath, Arul Pandian B, Avinash Kumar Paladi, Bhal Chandra Joshi, Churchil Dwivedi, Debabrata Deb, Deep Maity, Dhruv Kumar, Fazal Kareem, Hemanga Tahbildar, Himanshu Grover, Jaikhomba Singha, Jibin Jose, Kaustubh Rai, Kavya Shaji, Keitaro Takahashi, Kunjal Vara, M. A. Krishnakumar, Manjari Bagchi, Manoneeta Chakraborty, Manpreet Singh, Mayuresh Surnis, Neelam Dhanda Batra, Nobleson K, P. Arumugam, Prabu Thiagaraj, Pragna Mamidipaka, Pratik Tarafdar, Prerna Rana, Ryo Kato, Sarbartha Sengupta, Shantanu Desai, Shaswata Chowdhury, Shebin Jose Jacob, S Jagadeesh, Sushovan Mondal, Swetha Arumugam, Toki Ogi, Vaishnavi Vyasraj, Vinay Bharambe, Yashwant Gupta, Yogesh Maan, Zenia Zuraiq","cross_cats":["astro-ph.HE"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2025-06-20T06:09:50Z","title":"The Indian Pulsar Timing Array Data Release 2: I. Dataset and Timing Analysis"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2506.16769","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":"sha256:8decfdc584464f15840ac13d43bd6c06b1965740803f2032e3bf141ec394f795","target":"record","created_at":"2026-07-05T11:37:23Z","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":"1eb1075981887a71711399239dba89cd4a889309a5b6e7c00174c4388f7081fe","cross_cats_sorted":["astro-ph.HE"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2025-06-20T06:09:50Z","title_canon_sha256":"e90675702272e128f2c929b59d86c6d80b65b7a7b4d20daf33714625394f55f3"},"schema_version":"1.0","source":{"id":"2506.16769","kind":"arxiv","version":1}},"canonical_sha256":"3eb23b035c1363016e21574e47ad7a3b12640bd2afff77eaa7dd8ba219a37b08","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"3eb23b035c1363016e21574e47ad7a3b12640bd2afff77eaa7dd8ba219a37b08","first_computed_at":"2026-07-05T11:37:23.889009Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T11:37:23.889009Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"mqYoLDwWfN/G4oac4r84Per9R2CDx/if4m3ustPufbkd5bs54X6sQXtvdVQA1LIpCyf/JcA67o5SJR40O2K0DA==","signature_status":"signed_v1","signed_at":"2026-07-05T11:37:23.889520Z","signed_message":"canonical_sha256_bytes"},"source_id":"2506.16769","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:8decfdc584464f15840ac13d43bd6c06b1965740803f2032e3bf141ec394f795","sha256:1cf6a75d6c3861bb8bf59de1f534a00174b71796d66544c6dcdad68d77e02a9f"],"state_sha256":"d46787c9d02159ba18ac46cca1f5497dbe52ab38d2c13e29d308b630051b5410"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"eoc1bVOnSGVblUSg7pQE8ZVkIncaQvmaceVe72UcbaZYWPI421LrkHi8szkgi/eso5JWaxvNjsJvsCZJRuMBAg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-17T22:29:22.773233Z","bundle_sha256":"441590508912300ea9aac30013d4f8a0bf2f23ff01190b9eef63de8dc50f7644"}}