{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2009:NGT3ZL3ZBHTQ36BS754OOZC6CW","short_pith_number":"pith:NGT3ZL3Z","canonical_record":{"source":{"id":"0907.4183","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ex","submitted_at":"2009-07-23T22:21:43Z","cross_cats_sorted":["physics.ins-det"],"title_canon_sha256":"e3782996b818cf8a6cfc3cd1ebc134624f1fe87a31ea210b7c05f55aff65bed1","abstract_canon_sha256":"558ae523e74674d56ffa56e92ded0595821a36a53c9805ac0ecaeb34821f1a31"},"schema_version":"1.0"},"canonical_sha256":"69a7bcaf7909e70df832ff78e7645e158664c477eb17ca16e17b0903d36e59b8","source":{"kind":"arxiv","id":"0907.4183","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0907.4183","created_at":"2026-07-04T15:47:31Z"},{"alias_kind":"arxiv_version","alias_value":"0907.4183v2","created_at":"2026-07-04T15:47:31Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0907.4183","created_at":"2026-07-04T15:47:31Z"},{"alias_kind":"pith_short_12","alias_value":"NGT3ZL3ZBHTQ","created_at":"2026-07-04T15:47:31Z"},{"alias_kind":"pith_short_16","alias_value":"NGT3ZL3ZBHTQ36BS","created_at":"2026-07-04T15:47:31Z"},{"alias_kind":"pith_short_8","alias_value":"NGT3ZL3Z","created_at":"2026-07-04T15:47:31Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2009:NGT3ZL3ZBHTQ36BS754OOZC6CW","target":"record","payload":{"canonical_record":{"source":{"id":"0907.4183","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ex","submitted_at":"2009-07-23T22:21:43Z","cross_cats_sorted":["physics.ins-det"],"title_canon_sha256":"e3782996b818cf8a6cfc3cd1ebc134624f1fe87a31ea210b7c05f55aff65bed1","abstract_canon_sha256":"558ae523e74674d56ffa56e92ded0595821a36a53c9805ac0ecaeb34821f1a31"},"schema_version":"1.0"},"canonical_sha256":"69a7bcaf7909e70df832ff78e7645e158664c477eb17ca16e17b0903d36e59b8","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-04T15:47:31.799140Z","signature_b64":"X0EisV9omxhPM0Sd8Bkh4QuB6wWjltxi4tWliL4SPs1jyPLK1BW8H4r2VZ59gTH9/2eI5H8D7UOOcjFnXG9KDQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"69a7bcaf7909e70df832ff78e7645e158664c477eb17ca16e17b0903d36e59b8","last_reissued_at":"2026-07-04T15:47:31.798718Z","signature_status":"signed_v1","first_computed_at":"2026-07-04T15:47:31.798718Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"0907.4183","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":"2026-07-04T15:47:31Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"EwGzEInrh9GAF2OD9LnNXF8jYXoPcMIWL6GO4Nibk9BjUD46+tymXBWmIquj1IW+us0EyngeYMq3BRo9vfztBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-11T20:09:47.261950Z"},"content_sha256":"f2c4f65c057b249084892144a4ddbaa38676ba1ac767c32613dc9be134b3145a","schema_version":"1.0","event_id":"sha256:f2c4f65c057b249084892144a4ddbaa38676ba1ac767c32613dc9be134b3145a"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2009:NGT3ZL3ZBHTQ36BS754OOZC6CW","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Report on the Depth Requirements for a Massive Detector at Homestake","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["physics.ins-det"],"primary_cat":"hep-ex","authors_text":"Adam Bernstein, Bonnie Fleming, Brett Viren, Christopher Walter, David B. Cline, David Lissauer, Edward Blucher, Edward Kearns, Francesco Lanni, Gregory Sullivan, Henry Sobel, James Stewart, Joshua Klein, Kate Scholberg, Kenneth Lande, Mark Vagins, Mary Bishai, Maury Goodman, Michael Smy, Milind V. Diwan, Regina Rameika, Richard Kadel, Robert McKeown, Robert Svoboda, Robert Zwaska, Steve Marks, William Morse, William M. Roggenthen, Zbigniew J. Hladysz","submitted_at":"2009-07-23T22:21:43Z","abstract_excerpt":"This report provides the technical justification for locating a large detector underground in a US based Deep Underground Science and Engineering Laboratory. A large detector with a fiducial mass in the mega-ton scale will most likely be a multipurpose facility. The main physics justification for such a device is detection of accelerator generated neutrinos, nucleon decay, and natural sources of neutrinos such as solar, atmospheric and supernova neutrinos. In addition to the physics justification there are practical issues regarding the existing infrastructure at Homestake, and the stress char"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0907.4183","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/0907.4183/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":"2026-07-04T15:47:31Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"SAK8HbTb8+mqsnnffgrNaPlT08zdiWIDoYodKMW4UnA1NWasdUqy6zbPQu0VR6OQU11Uas+710fdp2a397xTDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-11T20:09:47.262430Z"},"content_sha256":"2bb8be3efba3eaffceda1905cb336bd4c51e603ff9d159ce84f9dfe5de1f8b31","schema_version":"1.0","event_id":"sha256:2bb8be3efba3eaffceda1905cb336bd4c51e603ff9d159ce84f9dfe5de1f8b31"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/NGT3ZL3ZBHTQ36BS754OOZC6CW/bundle.json","state_url":"https://pith.science/pith/NGT3ZL3ZBHTQ36BS754OOZC6CW/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/NGT3ZL3ZBHTQ36BS754OOZC6CW/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":"2026-08-11T20:09:47Z","links":{"resolver":"https://pith.science/pith/NGT3ZL3ZBHTQ36BS754OOZC6CW","bundle":"https://pith.science/pith/NGT3ZL3ZBHTQ36BS754OOZC6CW/bundle.json","state":"https://pith.science/pith/NGT3ZL3ZBHTQ36BS754OOZC6CW/state.json","well_known_bundle":"https://pith.science/.well-known/pith/NGT3ZL3ZBHTQ36BS754OOZC6CW/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2009:NGT3ZL3ZBHTQ36BS754OOZC6CW","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":"558ae523e74674d56ffa56e92ded0595821a36a53c9805ac0ecaeb34821f1a31","cross_cats_sorted":["physics.ins-det"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ex","submitted_at":"2009-07-23T22:21:43Z","title_canon_sha256":"e3782996b818cf8a6cfc3cd1ebc134624f1fe87a31ea210b7c05f55aff65bed1"},"schema_version":"1.0","source":{"id":"0907.4183","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0907.4183","created_at":"2026-07-04T15:47:31Z"},{"alias_kind":"arxiv_version","alias_value":"0907.4183v2","created_at":"2026-07-04T15:47:31Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0907.4183","created_at":"2026-07-04T15:47:31Z"},{"alias_kind":"pith_short_12","alias_value":"NGT3ZL3ZBHTQ","created_at":"2026-07-04T15:47:31Z"},{"alias_kind":"pith_short_16","alias_value":"NGT3ZL3ZBHTQ36BS","created_at":"2026-07-04T15:47:31Z"},{"alias_kind":"pith_short_8","alias_value":"NGT3ZL3Z","created_at":"2026-07-04T15:47:31Z"}],"graph_snapshots":[{"event_id":"sha256:2bb8be3efba3eaffceda1905cb336bd4c51e603ff9d159ce84f9dfe5de1f8b31","target":"graph","created_at":"2026-07-04T15:47:31Z","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/0907.4183/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"This report provides the technical justification for locating a large detector underground in a US based Deep Underground Science and Engineering Laboratory. A large detector with a fiducial mass in the mega-ton scale will most likely be a multipurpose facility. The main physics justification for such a device is detection of accelerator generated neutrinos, nucleon decay, and natural sources of neutrinos such as solar, atmospheric and supernova neutrinos. In addition to the physics justification there are practical issues regarding the existing infrastructure at Homestake, and the stress char","authors_text":"Adam Bernstein, Bonnie Fleming, Brett Viren, Christopher Walter, David B. Cline, David Lissauer, Edward Blucher, Edward Kearns, Francesco Lanni, Gregory Sullivan, Henry Sobel, James Stewart, Joshua Klein, Kate Scholberg, Kenneth Lande, Mark Vagins, Mary Bishai, Maury Goodman, Michael Smy, Milind V. Diwan, Regina Rameika, Richard Kadel, Robert McKeown, Robert Svoboda, Robert Zwaska, Steve Marks, William Morse, William M. Roggenthen, Zbigniew J. Hladysz","cross_cats":["physics.ins-det"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ex","submitted_at":"2009-07-23T22:21:43Z","title":"Report on the Depth Requirements for a Massive Detector at Homestake"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0907.4183","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:f2c4f65c057b249084892144a4ddbaa38676ba1ac767c32613dc9be134b3145a","target":"record","created_at":"2026-07-04T15:47:31Z","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":"558ae523e74674d56ffa56e92ded0595821a36a53c9805ac0ecaeb34821f1a31","cross_cats_sorted":["physics.ins-det"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ex","submitted_at":"2009-07-23T22:21:43Z","title_canon_sha256":"e3782996b818cf8a6cfc3cd1ebc134624f1fe87a31ea210b7c05f55aff65bed1"},"schema_version":"1.0","source":{"id":"0907.4183","kind":"arxiv","version":2}},"canonical_sha256":"69a7bcaf7909e70df832ff78e7645e158664c477eb17ca16e17b0903d36e59b8","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"69a7bcaf7909e70df832ff78e7645e158664c477eb17ca16e17b0903d36e59b8","first_computed_at":"2026-07-04T15:47:31.798718Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T15:47:31.798718Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"X0EisV9omxhPM0Sd8Bkh4QuB6wWjltxi4tWliL4SPs1jyPLK1BW8H4r2VZ59gTH9/2eI5H8D7UOOcjFnXG9KDQ==","signature_status":"signed_v1","signed_at":"2026-07-04T15:47:31.799140Z","signed_message":"canonical_sha256_bytes"},"source_id":"0907.4183","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:f2c4f65c057b249084892144a4ddbaa38676ba1ac767c32613dc9be134b3145a","sha256:2bb8be3efba3eaffceda1905cb336bd4c51e603ff9d159ce84f9dfe5de1f8b31"],"state_sha256":"f6ec158c344860948f54443478757232993eba440674eb8385bd4c07e1160c31"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"OQqMx5j/m5N6SVDD5DbiL0Ia08+XlgJTKet4zabfAOeeTLysayhK1kDFOqRo644uazAzsR++/SJlRAFGjuHSBw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-11T20:09:47.265705Z","bundle_sha256":"1bb122763b2a6c6ebfde23fbad928bb11e63297498ca22e2689598a96aaf5976"}}