{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2015:H6L2K3EVSNP6SMNXIEQ5JNMDNI","short_pith_number":"pith:H6L2K3EV","canonical_record":{"source":{"id":"1502.01132","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/publicdomain/","primary_cat":"physics.ins-det","submitted_at":"2015-02-04T09:13:24Z","cross_cats_sorted":["hep-ex","nucl-ex"],"title_canon_sha256":"4bf6ae0596f592124cfbb95447311e84b78508f58ac7e4e2808f87a6f42cf07e","abstract_canon_sha256":"c4b39c8962336eddbd047c046d31b0eaaaf0fc6b267b2ecd8fa8f7f24f899b00"},"schema_version":"1.0"},"canonical_sha256":"3f97a56c95935fe931b74121d4b5836a3fc2576372a274f05cc5f59b552be167","source":{"kind":"arxiv","id":"1502.01132","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1502.01132","created_at":"2026-05-18T02:27:57Z"},{"alias_kind":"arxiv_version","alias_value":"1502.01132v1","created_at":"2026-05-18T02:27:57Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1502.01132","created_at":"2026-05-18T02:27:57Z"},{"alias_kind":"pith_short_12","alias_value":"H6L2K3EVSNP6","created_at":"2026-05-18T12:29:22Z"},{"alias_kind":"pith_short_16","alias_value":"H6L2K3EVSNP6SMNX","created_at":"2026-05-18T12:29:22Z"},{"alias_kind":"pith_short_8","alias_value":"H6L2K3EV","created_at":"2026-05-18T12:29:22Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2015:H6L2K3EVSNP6SMNXIEQ5JNMDNI","target":"record","payload":{"canonical_record":{"source":{"id":"1502.01132","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/publicdomain/","primary_cat":"physics.ins-det","submitted_at":"2015-02-04T09:13:24Z","cross_cats_sorted":["hep-ex","nucl-ex"],"title_canon_sha256":"4bf6ae0596f592124cfbb95447311e84b78508f58ac7e4e2808f87a6f42cf07e","abstract_canon_sha256":"c4b39c8962336eddbd047c046d31b0eaaaf0fc6b267b2ecd8fa8f7f24f899b00"},"schema_version":"1.0"},"canonical_sha256":"3f97a56c95935fe931b74121d4b5836a3fc2576372a274f05cc5f59b552be167","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:27:57.946570Z","signature_b64":"UzVpuzZcCJNSF+BPPnbw2Dq7/10ws2KiybnaMVkbwrEjLHR4KGWeHc6Soq4yd4WsceF+QOcchpWtgAq7n9iQDA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"3f97a56c95935fe931b74121d4b5836a3fc2576372a274f05cc5f59b552be167","last_reissued_at":"2026-05-18T02:27:57.945844Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:27:57.945844Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1502.01132","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":"2026-05-18T02:27:57Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"DAiXFPKhhbJqGCHwf8vaBnFxUhLQBAVsQcrwgWG2NnbuTl4b0lsuBEi3ci2jXDeUMG25Wtmcxfszvvjy3nADAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T12:56:04.728764Z"},"content_sha256":"3a00361b0e8b377280fc0082c6b9462ece8359321c608db7d8437125384dfc1f","schema_version":"1.0","event_id":"sha256:3a00361b0e8b377280fc0082c6b9462ece8359321c608db7d8437125384dfc1f"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2015:H6L2K3EVSNP6SMNXIEQ5JNMDNI","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The Physics and Nuclear Nonproliferation Goals of WATCHMAN: A WAter CHerenkov Monitor for ANtineutrinos","license":"http://creativecommons.org/licenses/publicdomain/","headline":"","cross_cats":["hep-ex","nucl-ex"],"primary_cat":"physics.ins-det","authors_text":"A. Bernstein, A. Hatzikoutelis, B. J. Land, C. Mauger, C. Roecker, D. Hellfeld, G. D. Orebi Gann, J. G. Learned, K. A. van Bibber, M. Askins, M. Bergevin, M. B. Smy, M. J. Wetstein, M. R. Vagins, M. Sweany, M. Yeh, P. Jaffke, P. Marleau, R. B. Vogelaar, R. Svoboda, S. Dazeley, S. D. Rountree, S. T. Dye, T. Handler, T. M. Shokair, Y. Kamyshkov","submitted_at":"2015-02-04T09:13:24Z","abstract_excerpt":"This article describes the physics and nonproliferation goals of WATCHMAN, the WAter Cherenkov Monitor for ANtineutrinos. The baseline WATCHMAN design is a kiloton scale gadolinium-doped (Gd) light water Cherenkov detector, placed 13 kilometers from a civil nuclear reactor in the United States. In its first deployment phase, WATCHMAN will be used to remotely detect a change in the operational status of the reactor, providing a first- ever demonstration of the potential of large Gd-doped water detectors for remote reactor monitoring for future international nuclear nonproliferation applications"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1502.01132","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":"2026-05-18T02:27:57Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"4YZQt1NBA9iTHjPyLU9FpOtXPYeGYEjpGxRDqubO//16NiynHRTCH2QtufGc4LygboHoMgg1kALQThwZE4/JCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T12:56:04.729126Z"},"content_sha256":"55744ebba029d48ab9e13720de828feb5da2126fe351f555b7c4b893ab736dd9","schema_version":"1.0","event_id":"sha256:55744ebba029d48ab9e13720de828feb5da2126fe351f555b7c4b893ab736dd9"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/H6L2K3EVSNP6SMNXIEQ5JNMDNI/bundle.json","state_url":"https://pith.science/pith/H6L2K3EVSNP6SMNXIEQ5JNMDNI/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/H6L2K3EVSNP6SMNXIEQ5JNMDNI/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":"2026-05-28T12:56:04Z","links":{"resolver":"https://pith.science/pith/H6L2K3EVSNP6SMNXIEQ5JNMDNI","bundle":"https://pith.science/pith/H6L2K3EVSNP6SMNXIEQ5JNMDNI/bundle.json","state":"https://pith.science/pith/H6L2K3EVSNP6SMNXIEQ5JNMDNI/state.json","well_known_bundle":"https://pith.science/.well-known/pith/H6L2K3EVSNP6SMNXIEQ5JNMDNI/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:H6L2K3EVSNP6SMNXIEQ5JNMDNI","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":"c4b39c8962336eddbd047c046d31b0eaaaf0fc6b267b2ecd8fa8f7f24f899b00","cross_cats_sorted":["hep-ex","nucl-ex"],"license":"http://creativecommons.org/licenses/publicdomain/","primary_cat":"physics.ins-det","submitted_at":"2015-02-04T09:13:24Z","title_canon_sha256":"4bf6ae0596f592124cfbb95447311e84b78508f58ac7e4e2808f87a6f42cf07e"},"schema_version":"1.0","source":{"id":"1502.01132","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1502.01132","created_at":"2026-05-18T02:27:57Z"},{"alias_kind":"arxiv_version","alias_value":"1502.01132v1","created_at":"2026-05-18T02:27:57Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1502.01132","created_at":"2026-05-18T02:27:57Z"},{"alias_kind":"pith_short_12","alias_value":"H6L2K3EVSNP6","created_at":"2026-05-18T12:29:22Z"},{"alias_kind":"pith_short_16","alias_value":"H6L2K3EVSNP6SMNX","created_at":"2026-05-18T12:29:22Z"},{"alias_kind":"pith_short_8","alias_value":"H6L2K3EV","created_at":"2026-05-18T12:29:22Z"}],"graph_snapshots":[{"event_id":"sha256:55744ebba029d48ab9e13720de828feb5da2126fe351f555b7c4b893ab736dd9","target":"graph","created_at":"2026-05-18T02:27:57Z","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":"This article describes the physics and nonproliferation goals of WATCHMAN, the WAter Cherenkov Monitor for ANtineutrinos. The baseline WATCHMAN design is a kiloton scale gadolinium-doped (Gd) light water Cherenkov detector, placed 13 kilometers from a civil nuclear reactor in the United States. In its first deployment phase, WATCHMAN will be used to remotely detect a change in the operational status of the reactor, providing a first- ever demonstration of the potential of large Gd-doped water detectors for remote reactor monitoring for future international nuclear nonproliferation applications","authors_text":"A. Bernstein, A. Hatzikoutelis, B. J. Land, C. Mauger, C. Roecker, D. Hellfeld, G. D. Orebi Gann, J. G. Learned, K. A. van Bibber, M. Askins, M. Bergevin, M. B. Smy, M. J. Wetstein, M. R. Vagins, M. Sweany, M. Yeh, P. Jaffke, P. Marleau, R. B. Vogelaar, R. Svoboda, S. Dazeley, S. D. Rountree, S. T. Dye, T. Handler, T. M. Shokair, Y. Kamyshkov","cross_cats":["hep-ex","nucl-ex"],"headline":"","license":"http://creativecommons.org/licenses/publicdomain/","primary_cat":"physics.ins-det","submitted_at":"2015-02-04T09:13:24Z","title":"The Physics and Nuclear Nonproliferation Goals of WATCHMAN: A WAter CHerenkov Monitor for ANtineutrinos"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1502.01132","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":"sha256:3a00361b0e8b377280fc0082c6b9462ece8359321c608db7d8437125384dfc1f","target":"record","created_at":"2026-05-18T02:27:57Z","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":"c4b39c8962336eddbd047c046d31b0eaaaf0fc6b267b2ecd8fa8f7f24f899b00","cross_cats_sorted":["hep-ex","nucl-ex"],"license":"http://creativecommons.org/licenses/publicdomain/","primary_cat":"physics.ins-det","submitted_at":"2015-02-04T09:13:24Z","title_canon_sha256":"4bf6ae0596f592124cfbb95447311e84b78508f58ac7e4e2808f87a6f42cf07e"},"schema_version":"1.0","source":{"id":"1502.01132","kind":"arxiv","version":1}},"canonical_sha256":"3f97a56c95935fe931b74121d4b5836a3fc2576372a274f05cc5f59b552be167","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"3f97a56c95935fe931b74121d4b5836a3fc2576372a274f05cc5f59b552be167","first_computed_at":"2026-05-18T02:27:57.945844Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:27:57.945844Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"UzVpuzZcCJNSF+BPPnbw2Dq7/10ws2KiybnaMVkbwrEjLHR4KGWeHc6Soq4yd4WsceF+QOcchpWtgAq7n9iQDA==","signature_status":"signed_v1","signed_at":"2026-05-18T02:27:57.946570Z","signed_message":"canonical_sha256_bytes"},"source_id":"1502.01132","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:3a00361b0e8b377280fc0082c6b9462ece8359321c608db7d8437125384dfc1f","sha256:55744ebba029d48ab9e13720de828feb5da2126fe351f555b7c4b893ab736dd9"],"state_sha256":"8ccae6d0bb2d05d13d148b23e3a38456c46a69d34002a4987acbb4a396536507"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ZxuCiJY6hZ9ih0n16pamYWuqEjCvLG1gKNxOkPqDupLslw5y2wqAiBjFtW6W4gQf6u5eAfIGaVnF8xUbnf58Ag==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-28T12:56:04.731296Z","bundle_sha256":"d7e60c6c915fb4ffb2238e706a6bf701bb2b6adf3c1112dc7c0d91805f31ea2d"}}