{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2012:T5MMWFT5562WKKVLMR4HHNX7BJ","short_pith_number":"pith:T5MMWFT5","canonical_record":{"source":{"id":"1212.5120","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-ex","submitted_at":"2012-12-20T16:17:24Z","cross_cats_sorted":["nucl-th"],"title_canon_sha256":"7f14aa05fbc3dc9a9d465cab25d7ec3e181b3b769a7e771d4a8449ff9ff1931f","abstract_canon_sha256":"e72c7fba422cc09f1cad2b721a81f39d561e89e15c622461d4be3b9be05b3643"},"schema_version":"1.0"},"canonical_sha256":"9f58cb167defb5652aab647873b6ff0a6904e451fed7b9b4961afe3dfc07b227","source":{"kind":"arxiv","id":"1212.5120","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1212.5120","created_at":"2026-05-18T01:52:29Z"},{"alias_kind":"arxiv_version","alias_value":"1212.5120v1","created_at":"2026-05-18T01:52:29Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1212.5120","created_at":"2026-05-18T01:52:29Z"},{"alias_kind":"pith_short_12","alias_value":"T5MMWFT5562W","created_at":"2026-05-18T12:27:23Z"},{"alias_kind":"pith_short_16","alias_value":"T5MMWFT5562WKKVL","created_at":"2026-05-18T12:27:23Z"},{"alias_kind":"pith_short_8","alias_value":"T5MMWFT5","created_at":"2026-05-18T12:27:23Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2012:T5MMWFT5562WKKVLMR4HHNX7BJ","target":"record","payload":{"canonical_record":{"source":{"id":"1212.5120","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-ex","submitted_at":"2012-12-20T16:17:24Z","cross_cats_sorted":["nucl-th"],"title_canon_sha256":"7f14aa05fbc3dc9a9d465cab25d7ec3e181b3b769a7e771d4a8449ff9ff1931f","abstract_canon_sha256":"e72c7fba422cc09f1cad2b721a81f39d561e89e15c622461d4be3b9be05b3643"},"schema_version":"1.0"},"canonical_sha256":"9f58cb167defb5652aab647873b6ff0a6904e451fed7b9b4961afe3dfc07b227","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:52:29.739816Z","signature_b64":"rQd1eOADKUJsYimTrg6QEb3IFDqC7oVMr/OZGb/uTA5DLqKOzwSYqqnV5Q+dYF93WyT6+lI1RCSxUgmhRrnpDw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"9f58cb167defb5652aab647873b6ff0a6904e451fed7b9b4961afe3dfc07b227","last_reissued_at":"2026-05-18T01:52:29.739157Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:52:29.739157Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1212.5120","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":"2026-05-18T01:52:29Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"KXIUU2cUtZarHYAe5uc8zacdx2yZBqz0xCTpya2fYAVW1U7a6sS0zAtureWW6S5UiLx2XiZPe/2Yg/tPH5aXBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-07T07:19:53.375172Z"},"content_sha256":"f8cf9df4e96c7a436301ad96ebb63637e1b70e68ff320d732626591f9a22ca6c","schema_version":"1.0","event_id":"sha256:f8cf9df4e96c7a436301ad96ebb63637e1b70e68ff320d732626591f9a22ca6c"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2012:T5MMWFT5562WKKVLMR4HHNX7BJ","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"New Half-life Limits on Double Beta Decays of Pd110 and Pd102 into Excited States","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["nucl-th"],"primary_cat":"nucl-ex","authors_text":"Bjoern Lehnert, Erica Andreotti, Kai Zuber, Mikael Hult","submitted_at":"2012-12-20T16:17:24Z","abstract_excerpt":"A search for excited state transitions of double beta decay in Pd110 and double electron capture in Pd102 has been performed in the HADES underground laboratory with two low background HPGe detectors in sandwich configuration. After an exposure of 35.92 kg*d, no signal was found. The frequentist spectral analysis resulted in lower half-life limits of 1.98e20 yr and 1.72e20 yr (95% CL) for the first 0+ and 2+ excited state in Pd110 respectively. This is an improvement by more than a factor of 3 with respect to previous measurements. In Pd102, the lower half-life limit could be improved to 5.95e"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1212.5120","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":"2026-05-18T01:52:29Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"pt53Z8qCHuZC91nPtTJnfxaq1Xitd/piQxSJpLR1lawuVsIDtwNMFv6rXER8gin2R2QwL4SK9kl4TGAGiAfyBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-07T07:19:53.375535Z"},"content_sha256":"5831368372b0d28e0a711bef413409ac8be6a90fea2814e148202690dbac4e9b","schema_version":"1.0","event_id":"sha256:5831368372b0d28e0a711bef413409ac8be6a90fea2814e148202690dbac4e9b"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/T5MMWFT5562WKKVLMR4HHNX7BJ/bundle.json","state_url":"https://pith.science/pith/T5MMWFT5562WKKVLMR4HHNX7BJ/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/T5MMWFT5562WKKVLMR4HHNX7BJ/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":"2026-07-07T07:19:53Z","links":{"resolver":"https://pith.science/pith/T5MMWFT5562WKKVLMR4HHNX7BJ","bundle":"https://pith.science/pith/T5MMWFT5562WKKVLMR4HHNX7BJ/bundle.json","state":"https://pith.science/pith/T5MMWFT5562WKKVLMR4HHNX7BJ/state.json","well_known_bundle":"https://pith.science/.well-known/pith/T5MMWFT5562WKKVLMR4HHNX7BJ/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:T5MMWFT5562WKKVLMR4HHNX7BJ","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":"e72c7fba422cc09f1cad2b721a81f39d561e89e15c622461d4be3b9be05b3643","cross_cats_sorted":["nucl-th"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-ex","submitted_at":"2012-12-20T16:17:24Z","title_canon_sha256":"7f14aa05fbc3dc9a9d465cab25d7ec3e181b3b769a7e771d4a8449ff9ff1931f"},"schema_version":"1.0","source":{"id":"1212.5120","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1212.5120","created_at":"2026-05-18T01:52:29Z"},{"alias_kind":"arxiv_version","alias_value":"1212.5120v1","created_at":"2026-05-18T01:52:29Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1212.5120","created_at":"2026-05-18T01:52:29Z"},{"alias_kind":"pith_short_12","alias_value":"T5MMWFT5562W","created_at":"2026-05-18T12:27:23Z"},{"alias_kind":"pith_short_16","alias_value":"T5MMWFT5562WKKVL","created_at":"2026-05-18T12:27:23Z"},{"alias_kind":"pith_short_8","alias_value":"T5MMWFT5","created_at":"2026-05-18T12:27:23Z"}],"graph_snapshots":[{"event_id":"sha256:5831368372b0d28e0a711bef413409ac8be6a90fea2814e148202690dbac4e9b","target":"graph","created_at":"2026-05-18T01:52:29Z","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":"A search for excited state transitions of double beta decay in Pd110 and double electron capture in Pd102 has been performed in the HADES underground laboratory with two low background HPGe detectors in sandwich configuration. After an exposure of 35.92 kg*d, no signal was found. The frequentist spectral analysis resulted in lower half-life limits of 1.98e20 yr and 1.72e20 yr (95% CL) for the first 0+ and 2+ excited state in Pd110 respectively. This is an improvement by more than a factor of 3 with respect to previous measurements. In Pd102, the lower half-life limit could be improved to 5.95e","authors_text":"Bjoern Lehnert, Erica Andreotti, Kai Zuber, Mikael Hult","cross_cats":["nucl-th"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-ex","submitted_at":"2012-12-20T16:17:24Z","title":"New Half-life Limits on Double Beta Decays of Pd110 and Pd102 into Excited States"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1212.5120","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:f8cf9df4e96c7a436301ad96ebb63637e1b70e68ff320d732626591f9a22ca6c","target":"record","created_at":"2026-05-18T01:52:29Z","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":"e72c7fba422cc09f1cad2b721a81f39d561e89e15c622461d4be3b9be05b3643","cross_cats_sorted":["nucl-th"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-ex","submitted_at":"2012-12-20T16:17:24Z","title_canon_sha256":"7f14aa05fbc3dc9a9d465cab25d7ec3e181b3b769a7e771d4a8449ff9ff1931f"},"schema_version":"1.0","source":{"id":"1212.5120","kind":"arxiv","version":1}},"canonical_sha256":"9f58cb167defb5652aab647873b6ff0a6904e451fed7b9b4961afe3dfc07b227","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"9f58cb167defb5652aab647873b6ff0a6904e451fed7b9b4961afe3dfc07b227","first_computed_at":"2026-05-18T01:52:29.739157Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:52:29.739157Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"rQd1eOADKUJsYimTrg6QEb3IFDqC7oVMr/OZGb/uTA5DLqKOzwSYqqnV5Q+dYF93WyT6+lI1RCSxUgmhRrnpDw==","signature_status":"signed_v1","signed_at":"2026-05-18T01:52:29.739816Z","signed_message":"canonical_sha256_bytes"},"source_id":"1212.5120","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:f8cf9df4e96c7a436301ad96ebb63637e1b70e68ff320d732626591f9a22ca6c","sha256:5831368372b0d28e0a711bef413409ac8be6a90fea2814e148202690dbac4e9b"],"state_sha256":"596dac2b05f09866a07117ee69b3c9bc9751d77ceec1f65a049f7cd4fcac5c42"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"gegs4Fdw8DTaYa0G2/3C6M6cDHnKNql3kys2iq/IG9p/aSoFodfGfBiUXfo34oBN2pub9eYcsS/oqmWX9HbUCw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-07T07:19:53.377871Z","bundle_sha256":"5c39f17c6134ba5b057d383d4f9eb1b9cb0edbe07d7c082b4f03f345630166df"}}