{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2015:WQDTPYPIZFSR7FFWZFSHZNYPXC","short_pith_number":"pith:WQDTPYPI","canonical_record":{"source":{"id":"1502.05247","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-ex","submitted_at":"2015-02-09T22:53:22Z","cross_cats_sorted":["physics.ins-det"],"title_canon_sha256":"b2ece76d6700d601f8cd5a53c38fa3d9df78ac4f5285d593f213b7ef7a0b8786","abstract_canon_sha256":"4e70e5e1e0f996f9d463c020d7c70ffc4754c2001441c4e44da1343b2162be67"},"schema_version":"1.0"},"canonical_sha256":"b40737e1e8c9651f94b6c9647cb70fb88fe622faeaf5d0293eb5b90389239b86","source":{"kind":"arxiv","id":"1502.05247","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1502.05247","created_at":"2026-05-18T01:36:43Z"},{"alias_kind":"arxiv_version","alias_value":"1502.05247v2","created_at":"2026-05-18T01:36:43Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1502.05247","created_at":"2026-05-18T01:36:43Z"},{"alias_kind":"pith_short_12","alias_value":"WQDTPYPIZFSR","created_at":"2026-05-18T12:29:47Z"},{"alias_kind":"pith_short_16","alias_value":"WQDTPYPIZFSR7FFW","created_at":"2026-05-18T12:29:47Z"},{"alias_kind":"pith_short_8","alias_value":"WQDTPYPI","created_at":"2026-05-18T12:29:47Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2015:WQDTPYPIZFSR7FFWZFSHZNYPXC","target":"record","payload":{"canonical_record":{"source":{"id":"1502.05247","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-ex","submitted_at":"2015-02-09T22:53:22Z","cross_cats_sorted":["physics.ins-det"],"title_canon_sha256":"b2ece76d6700d601f8cd5a53c38fa3d9df78ac4f5285d593f213b7ef7a0b8786","abstract_canon_sha256":"4e70e5e1e0f996f9d463c020d7c70ffc4754c2001441c4e44da1343b2162be67"},"schema_version":"1.0"},"canonical_sha256":"b40737e1e8c9651f94b6c9647cb70fb88fe622faeaf5d0293eb5b90389239b86","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:36:43.345495Z","signature_b64":"Pu2b4v8NbRbaqnET8XnzL2FRUQTlEvZUUn7BMzLOf16SMkt8764drXnwpcQ+TVkb+UhoSWFVUhvPimUKUEh6Dg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"b40737e1e8c9651f94b6c9647cb70fb88fe622faeaf5d0293eb5b90389239b86","last_reissued_at":"2026-05-18T01:36:43.344730Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:36:43.344730Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1502.05247","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":"2026-05-18T01:36:43Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Zg2txW+20D5+RndqQNuIUDByBOHG6Id9/EZYxZU2kU6qTSZ6FyJ6BEBJ4NpL/h4QNRy31wjmBdoSJJ07QsZCCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T10:03:32.874156Z"},"content_sha256":"8519eb407f768302b1c68c747aa549d4d0be3d7d40282d6339027f74f56a904d","schema_version":"1.0","event_id":"sha256:8519eb407f768302b1c68c747aa549d4d0be3d7d40282d6339027f74f56a904d"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2015:WQDTPYPIZFSR7FFWZFSHZNYPXC","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Preliminary study of feasibility of an experiment looking for excited state double beta transitions in tin","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["physics.ins-det"],"primary_cat":"nucl-ex","authors_text":"A. K. Singh, F. Cappella, M. Laubenstein, P. Belli, P. K. Raina, P. K. Rath, R. Bernabei, R. Cerulli, S. K. Ghorui, Soumik Das","submitted_at":"2015-02-09T22:53:22Z","abstract_excerpt":"An attempt to study the feasibility of a new experiment to search for double beta decay in $^{112}$Sn and $^{124}$Sn was carried out by using ultra-low background HPGe detector (244 cm$^{3}$) inside the Gran Sasso National Laboratory (LNGS) of the INFN (Italy). A small sample of natural Sn was examined for 2367.5 h. The radioactive contamination of the sample has been estimated. The data has also been considered to calculate the present sensitivity for the proposed search; half-life limits $\\sim$ $10^{17} - 10^{18}$ years for $\\beta^{+}$EC and EC-EC processes in $^{112}$Sn and $\\sim$ $10^{18}$"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1502.05247","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":""},"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":"2026-05-18T01:36:43Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ihhPMl/yKhk/dzPARq49LV12xVKby9Xk7y+xWeGWDD4fni3lTI5Roo8gfmi7Vbr158HHWValhLBeFHsxRe6dCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T10:03:32.874822Z"},"content_sha256":"9e1ea1c4bc262a940a6b1bb4ba681dbee7f58bce438225afc1a75b50f831141d","schema_version":"1.0","event_id":"sha256:9e1ea1c4bc262a940a6b1bb4ba681dbee7f58bce438225afc1a75b50f831141d"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/WQDTPYPIZFSR7FFWZFSHZNYPXC/bundle.json","state_url":"https://pith.science/pith/WQDTPYPIZFSR7FFWZFSHZNYPXC/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/WQDTPYPIZFSR7FFWZFSHZNYPXC/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":"2026-05-25T10:03:32Z","links":{"resolver":"https://pith.science/pith/WQDTPYPIZFSR7FFWZFSHZNYPXC","bundle":"https://pith.science/pith/WQDTPYPIZFSR7FFWZFSHZNYPXC/bundle.json","state":"https://pith.science/pith/WQDTPYPIZFSR7FFWZFSHZNYPXC/state.json","well_known_bundle":"https://pith.science/.well-known/pith/WQDTPYPIZFSR7FFWZFSHZNYPXC/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:WQDTPYPIZFSR7FFWZFSHZNYPXC","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":"4e70e5e1e0f996f9d463c020d7c70ffc4754c2001441c4e44da1343b2162be67","cross_cats_sorted":["physics.ins-det"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-ex","submitted_at":"2015-02-09T22:53:22Z","title_canon_sha256":"b2ece76d6700d601f8cd5a53c38fa3d9df78ac4f5285d593f213b7ef7a0b8786"},"schema_version":"1.0","source":{"id":"1502.05247","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1502.05247","created_at":"2026-05-18T01:36:43Z"},{"alias_kind":"arxiv_version","alias_value":"1502.05247v2","created_at":"2026-05-18T01:36:43Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1502.05247","created_at":"2026-05-18T01:36:43Z"},{"alias_kind":"pith_short_12","alias_value":"WQDTPYPIZFSR","created_at":"2026-05-18T12:29:47Z"},{"alias_kind":"pith_short_16","alias_value":"WQDTPYPIZFSR7FFW","created_at":"2026-05-18T12:29:47Z"},{"alias_kind":"pith_short_8","alias_value":"WQDTPYPI","created_at":"2026-05-18T12:29:47Z"}],"graph_snapshots":[{"event_id":"sha256:9e1ea1c4bc262a940a6b1bb4ba681dbee7f58bce438225afc1a75b50f831141d","target":"graph","created_at":"2026-05-18T01:36:43Z","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":"An attempt to study the feasibility of a new experiment to search for double beta decay in $^{112}$Sn and $^{124}$Sn was carried out by using ultra-low background HPGe detector (244 cm$^{3}$) inside the Gran Sasso National Laboratory (LNGS) of the INFN (Italy). A small sample of natural Sn was examined for 2367.5 h. The radioactive contamination of the sample has been estimated. The data has also been considered to calculate the present sensitivity for the proposed search; half-life limits $\\sim$ $10^{17} - 10^{18}$ years for $\\beta^{+}$EC and EC-EC processes in $^{112}$Sn and $\\sim$ $10^{18}$","authors_text":"A. K. Singh, F. Cappella, M. Laubenstein, P. Belli, P. K. Raina, P. K. Rath, R. Bernabei, R. Cerulli, S. K. Ghorui, Soumik Das","cross_cats":["physics.ins-det"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-ex","submitted_at":"2015-02-09T22:53:22Z","title":"Preliminary study of feasibility of an experiment looking for excited state double beta transitions in tin"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1502.05247","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":"sha256:8519eb407f768302b1c68c747aa549d4d0be3d7d40282d6339027f74f56a904d","target":"record","created_at":"2026-05-18T01:36:43Z","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":"4e70e5e1e0f996f9d463c020d7c70ffc4754c2001441c4e44da1343b2162be67","cross_cats_sorted":["physics.ins-det"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-ex","submitted_at":"2015-02-09T22:53:22Z","title_canon_sha256":"b2ece76d6700d601f8cd5a53c38fa3d9df78ac4f5285d593f213b7ef7a0b8786"},"schema_version":"1.0","source":{"id":"1502.05247","kind":"arxiv","version":2}},"canonical_sha256":"b40737e1e8c9651f94b6c9647cb70fb88fe622faeaf5d0293eb5b90389239b86","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"b40737e1e8c9651f94b6c9647cb70fb88fe622faeaf5d0293eb5b90389239b86","first_computed_at":"2026-05-18T01:36:43.344730Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:36:43.344730Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Pu2b4v8NbRbaqnET8XnzL2FRUQTlEvZUUn7BMzLOf16SMkt8764drXnwpcQ+TVkb+UhoSWFVUhvPimUKUEh6Dg==","signature_status":"signed_v1","signed_at":"2026-05-18T01:36:43.345495Z","signed_message":"canonical_sha256_bytes"},"source_id":"1502.05247","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:8519eb407f768302b1c68c747aa549d4d0be3d7d40282d6339027f74f56a904d","sha256:9e1ea1c4bc262a940a6b1bb4ba681dbee7f58bce438225afc1a75b50f831141d"],"state_sha256":"e79cebb6507154499cbc33f92d13cadda36a97a115c4be1f01aecdac1fececa1"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"3tCNWHa7358PsaczsXlkaKAiWDCwzIAtWljZHgS0S+sk9FUH1dDMLqtpbcQLpGm8CKK5QMy+GY6Jm7VpdQK3AQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-25T10:03:32.878231Z","bundle_sha256":"d1518561e13f64b41d5da3a6e545a5805ee943a9a959966d6d4ae34ac354c201"}}