{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2007:BQGECHRYMMU6LHXT6TWSQDI7S6","short_pith_number":"pith:BQGECHRY","canonical_record":{"source":{"id":"0707.2756","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"nucl-ex","submitted_at":"2007-07-18T16:20:26Z","cross_cats_sorted":["hep-ph","nucl-th"],"title_canon_sha256":"5249c3cdb37193856ad0603a145f0a27ce05d1190a37be2448776890c5d4b4e5","abstract_canon_sha256":"8b1b8ca6939809d033e6e89a48358660dd40a02fdeca6a4040d08cbe8231a8f9"},"schema_version":"1.0"},"canonical_sha256":"0c0c411e386329e59ef3f4ed280d1f97b6bdef78aa844b0f38ac7ed331983a81","source":{"kind":"arxiv","id":"0707.2756","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0707.2756","created_at":"2026-07-04T15:21:21Z"},{"alias_kind":"arxiv_version","alias_value":"0707.2756v1","created_at":"2026-07-04T15:21:21Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0707.2756","created_at":"2026-07-04T15:21:21Z"},{"alias_kind":"pith_short_12","alias_value":"BQGECHRYMMU6","created_at":"2026-07-04T15:21:21Z"},{"alias_kind":"pith_short_16","alias_value":"BQGECHRYMMU6LHXT","created_at":"2026-07-04T15:21:21Z"},{"alias_kind":"pith_short_8","alias_value":"BQGECHRY","created_at":"2026-07-04T15:21:21Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2007:BQGECHRYMMU6LHXT6TWSQDI7S6","target":"record","payload":{"canonical_record":{"source":{"id":"0707.2756","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"nucl-ex","submitted_at":"2007-07-18T16:20:26Z","cross_cats_sorted":["hep-ph","nucl-th"],"title_canon_sha256":"5249c3cdb37193856ad0603a145f0a27ce05d1190a37be2448776890c5d4b4e5","abstract_canon_sha256":"8b1b8ca6939809d033e6e89a48358660dd40a02fdeca6a4040d08cbe8231a8f9"},"schema_version":"1.0"},"canonical_sha256":"0c0c411e386329e59ef3f4ed280d1f97b6bdef78aa844b0f38ac7ed331983a81","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-04T15:21:21.649644Z","signature_b64":"8WetSwZOOMnSIJYRVTTwrehGm1ND9Doq0XPN/jPDG1e7P7YAt8YCkria7vq/Nq4SVYWBPHoN6leajBYARUSSDA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"0c0c411e386329e59ef3f4ed280d1f97b6bdef78aa844b0f38ac7ed331983a81","last_reissued_at":"2026-07-04T15:21:21.649236Z","signature_status":"signed_v1","first_computed_at":"2026-07-04T15:21:21.649236Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"0707.2756","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":"2026-07-04T15:21:21Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Mtmvkowemi9YhAK76xXULat/bpCtdbTM9T4CaIouHI1vqTga/RsWK4DIOh0T/m7sgBEJMTlAiy0Rx8Ld4MS/Bw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-11T09:21:50.398329Z"},"content_sha256":"15adecfa41beafa98c6068c7eeb3eefad61d67a7c86c9c9cd8c93664d0bffd46","schema_version":"1.0","event_id":"sha256:15adecfa41beafa98c6068c7eeb3eefad61d67a7c86c9c9cd8c93664d0bffd46"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2007:BQGECHRYMMU6LHXT6TWSQDI7S6","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"First results on double beta decay modes of Cd, Te and Zn isotopes with the COBRA experiment","license":"","headline":"","cross_cats":["hep-ph","nucl-th"],"primary_cat":"nucl-ex","authors_text":"A. Boston, B. Morgan, B. R. Fulton, C. G\\\"o{\\ss}ling, C. Reeve, D. Dobos, D. M\\\"unstermann, D. Stewart, H. Kiel, J. Dawson, J. McGrath, J.R. Wilson, K. Zuber, M. Freer, M. Junker, P.F. Harrison, P. Nolan, R. Wadsworth, S. Oehl, S. P. Fox, The COBRA collaboration: T. Bloxham, Y. Ramachers","submitted_at":"2007-07-18T16:20:26Z","abstract_excerpt":"Four 1cm^3 CdZnTe semiconductor detectors were operated in the Gran Sasso National Laboratory to explore the feasibility of such devices for double beta decay searches as proposed for the COBRA experiment. The research involved background studies accompanied by measurements of energy resolution performed at the surface. Energy resolutions sufficient to reduce the contribution of two-neutrino double beta decay events to a negligible level for a large scale experiment have already been achieved and further improvements are expected. Using activity measurements of contaminants in all construction"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0707.2756","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/0707.2756/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":"2026-07-04T15:21:21Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"8piaxLGYu2hIPFLmYeL3Ppu7kQk5OQ82cze3uLpojcicElVhBktDaJouyPl6euJJEk/pi+jLyqoI67t16J5oBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-11T09:21:50.398723Z"},"content_sha256":"f7c4fc4d9659f8c69548cf0e6538401a7686a5ef8b3798815f198a66e4af8d10","schema_version":"1.0","event_id":"sha256:f7c4fc4d9659f8c69548cf0e6538401a7686a5ef8b3798815f198a66e4af8d10"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/BQGECHRYMMU6LHXT6TWSQDI7S6/bundle.json","state_url":"https://pith.science/pith/BQGECHRYMMU6LHXT6TWSQDI7S6/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/BQGECHRYMMU6LHXT6TWSQDI7S6/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":"2026-07-11T09:21:50Z","links":{"resolver":"https://pith.science/pith/BQGECHRYMMU6LHXT6TWSQDI7S6","bundle":"https://pith.science/pith/BQGECHRYMMU6LHXT6TWSQDI7S6/bundle.json","state":"https://pith.science/pith/BQGECHRYMMU6LHXT6TWSQDI7S6/state.json","well_known_bundle":"https://pith.science/.well-known/pith/BQGECHRYMMU6LHXT6TWSQDI7S6/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2007:BQGECHRYMMU6LHXT6TWSQDI7S6","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":"8b1b8ca6939809d033e6e89a48358660dd40a02fdeca6a4040d08cbe8231a8f9","cross_cats_sorted":["hep-ph","nucl-th"],"license":"","primary_cat":"nucl-ex","submitted_at":"2007-07-18T16:20:26Z","title_canon_sha256":"5249c3cdb37193856ad0603a145f0a27ce05d1190a37be2448776890c5d4b4e5"},"schema_version":"1.0","source":{"id":"0707.2756","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0707.2756","created_at":"2026-07-04T15:21:21Z"},{"alias_kind":"arxiv_version","alias_value":"0707.2756v1","created_at":"2026-07-04T15:21:21Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0707.2756","created_at":"2026-07-04T15:21:21Z"},{"alias_kind":"pith_short_12","alias_value":"BQGECHRYMMU6","created_at":"2026-07-04T15:21:21Z"},{"alias_kind":"pith_short_16","alias_value":"BQGECHRYMMU6LHXT","created_at":"2026-07-04T15:21:21Z"},{"alias_kind":"pith_short_8","alias_value":"BQGECHRY","created_at":"2026-07-04T15:21:21Z"}],"graph_snapshots":[{"event_id":"sha256:f7c4fc4d9659f8c69548cf0e6538401a7686a5ef8b3798815f198a66e4af8d10","target":"graph","created_at":"2026-07-04T15:21:21Z","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/0707.2756/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Four 1cm^3 CdZnTe semiconductor detectors were operated in the Gran Sasso National Laboratory to explore the feasibility of such devices for double beta decay searches as proposed for the COBRA experiment. The research involved background studies accompanied by measurements of energy resolution performed at the surface. Energy resolutions sufficient to reduce the contribution of two-neutrino double beta decay events to a negligible level for a large scale experiment have already been achieved and further improvements are expected. Using activity measurements of contaminants in all construction","authors_text":"A. Boston, B. Morgan, B. R. Fulton, C. G\\\"o{\\ss}ling, C. Reeve, D. Dobos, D. M\\\"unstermann, D. Stewart, H. Kiel, J. Dawson, J. McGrath, J.R. Wilson, K. Zuber, M. Freer, M. Junker, P.F. Harrison, P. Nolan, R. Wadsworth, S. Oehl, S. P. Fox, The COBRA collaboration: T. Bloxham, Y. Ramachers","cross_cats":["hep-ph","nucl-th"],"headline":"","license":"","primary_cat":"nucl-ex","submitted_at":"2007-07-18T16:20:26Z","title":"First results on double beta decay modes of Cd, Te and Zn isotopes with the COBRA experiment"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0707.2756","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":"sha256:15adecfa41beafa98c6068c7eeb3eefad61d67a7c86c9c9cd8c93664d0bffd46","target":"record","created_at":"2026-07-04T15:21:21Z","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":"8b1b8ca6939809d033e6e89a48358660dd40a02fdeca6a4040d08cbe8231a8f9","cross_cats_sorted":["hep-ph","nucl-th"],"license":"","primary_cat":"nucl-ex","submitted_at":"2007-07-18T16:20:26Z","title_canon_sha256":"5249c3cdb37193856ad0603a145f0a27ce05d1190a37be2448776890c5d4b4e5"},"schema_version":"1.0","source":{"id":"0707.2756","kind":"arxiv","version":1}},"canonical_sha256":"0c0c411e386329e59ef3f4ed280d1f97b6bdef78aa844b0f38ac7ed331983a81","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"0c0c411e386329e59ef3f4ed280d1f97b6bdef78aa844b0f38ac7ed331983a81","first_computed_at":"2026-07-04T15:21:21.649236Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T15:21:21.649236Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"8WetSwZOOMnSIJYRVTTwrehGm1ND9Doq0XPN/jPDG1e7P7YAt8YCkria7vq/Nq4SVYWBPHoN6leajBYARUSSDA==","signature_status":"signed_v1","signed_at":"2026-07-04T15:21:21.649644Z","signed_message":"canonical_sha256_bytes"},"source_id":"0707.2756","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:15adecfa41beafa98c6068c7eeb3eefad61d67a7c86c9c9cd8c93664d0bffd46","sha256:f7c4fc4d9659f8c69548cf0e6538401a7686a5ef8b3798815f198a66e4af8d10"],"state_sha256":"65efc2544a8e9411bd993a2c394675bd06d33abbb7036ff9d0d5a460793b4621"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"6Aq5iFltbbNf/X5Mpnyca9lXDJ76y5BSbRz9A+coKETjrqoXnGSU+wBo/jSXxqu5EsA1s3YVfzjc3EKYSjCiBA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-11T09:21:50.403307Z","bundle_sha256":"8608fd842552254907f84639a0e593799b5344785e30d4f765168f7c298d8bad"}}