{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:35QSYQX3FUM2MBWVNSVNFM5RQ2","short_pith_number":"pith:35QSYQX3","canonical_record":{"source":{"id":"1811.08978","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-th","submitted_at":"2018-11-22T00:41:16Z","cross_cats_sorted":["hep-th"],"title_canon_sha256":"01daa3f7015354be1507df458b45f5b50053e7c15761d308956b30515de77888","abstract_canon_sha256":"939177456f582e09ef056bb17d90886690fbaea440d8b4886e93e7a363710f36"},"schema_version":"1.0"},"canonical_sha256":"df612c42fb2d19a606d56caad2b3b18683a35abc63fb73efa322dd03f754e377","source":{"kind":"arxiv","id":"1811.08978","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1811.08978","created_at":"2026-05-17T23:59:48Z"},{"alias_kind":"arxiv_version","alias_value":"1811.08978v2","created_at":"2026-05-17T23:59:48Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1811.08978","created_at":"2026-05-17T23:59:48Z"},{"alias_kind":"pith_short_12","alias_value":"35QSYQX3FUM2","created_at":"2026-05-18T12:32:02Z"},{"alias_kind":"pith_short_16","alias_value":"35QSYQX3FUM2MBWV","created_at":"2026-05-18T12:32:02Z"},{"alias_kind":"pith_short_8","alias_value":"35QSYQX3","created_at":"2026-05-18T12:32:02Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:35QSYQX3FUM2MBWVNSVNFM5RQ2","target":"record","payload":{"canonical_record":{"source":{"id":"1811.08978","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-th","submitted_at":"2018-11-22T00:41:16Z","cross_cats_sorted":["hep-th"],"title_canon_sha256":"01daa3f7015354be1507df458b45f5b50053e7c15761d308956b30515de77888","abstract_canon_sha256":"939177456f582e09ef056bb17d90886690fbaea440d8b4886e93e7a363710f36"},"schema_version":"1.0"},"canonical_sha256":"df612c42fb2d19a606d56caad2b3b18683a35abc63fb73efa322dd03f754e377","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:59:48.102782Z","signature_b64":"4M6aG2qQhY5CdPceYtTuoHH/P33XP+d42UZxBx1w4Fml+N/+rjNAO4+XPURJrjXVgYH0MALSVmScE7bALD83BQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"df612c42fb2d19a606d56caad2b3b18683a35abc63fb73efa322dd03f754e377","last_reissued_at":"2026-05-17T23:59:48.102253Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:59:48.102253Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1811.08978","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":"2026-05-17T23:59:48Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"pDA0cqPCV2J2C/XmErkd2WGhf39b54KUi7+N3lvogad2gSptlvBPe22rtMtqtMphRNZzk1Qipw5wyXrpMeqPAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T12:41:43.358372Z"},"content_sha256":"daf8a634fde1349eabe88a8d6099f80d45c4b3bf9ec9ffca2d01ff22f6c9c5b0","schema_version":"1.0","event_id":"sha256:daf8a634fde1349eabe88a8d6099f80d45c4b3bf9ec9ffca2d01ff22f6c9c5b0"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:35QSYQX3FUM2MBWVNSVNFM5RQ2","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"An Elementary End of the Periodic Table","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["hep-th"],"primary_cat":"nucl-th","authors_text":"Stavros Garoufalidis, Yang-Hui He","submitted_at":"2018-11-22T00:41:16Z","abstract_excerpt":"Using the Planck scale as an absolute bound of half-life, we give a quick estimate, in the manner of Feynman's fine-structure method, of the highest possible atomic number. We find, upon simple extrapolation, that element 168 would constitute the end of the Periodic Table and its isotope with atomic weight 411, being the most stable. These are remarkably close to current best estimates obtained from sophisticated and much more involved Hartree-Fock calculations."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1811.08978","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":"2026-05-17T23:59:48Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"MdBeK+joO8r4LfRhnUPreOs+jZXNHrN3xjYFIHTcdsWofPSwX6nnX2ldYO+F13X2wgV0t3KHI0/UWZMfn0DSBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T12:41:43.359034Z"},"content_sha256":"13706c07741e6c26f44af72220ee4d155967691778e0cd3135590203ff88c52c","schema_version":"1.0","event_id":"sha256:13706c07741e6c26f44af72220ee4d155967691778e0cd3135590203ff88c52c"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/35QSYQX3FUM2MBWVNSVNFM5RQ2/bundle.json","state_url":"https://pith.science/pith/35QSYQX3FUM2MBWVNSVNFM5RQ2/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/35QSYQX3FUM2MBWVNSVNFM5RQ2/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":"2026-05-26T12:41:43Z","links":{"resolver":"https://pith.science/pith/35QSYQX3FUM2MBWVNSVNFM5RQ2","bundle":"https://pith.science/pith/35QSYQX3FUM2MBWVNSVNFM5RQ2/bundle.json","state":"https://pith.science/pith/35QSYQX3FUM2MBWVNSVNFM5RQ2/state.json","well_known_bundle":"https://pith.science/.well-known/pith/35QSYQX3FUM2MBWVNSVNFM5RQ2/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:35QSYQX3FUM2MBWVNSVNFM5RQ2","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":"939177456f582e09ef056bb17d90886690fbaea440d8b4886e93e7a363710f36","cross_cats_sorted":["hep-th"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-th","submitted_at":"2018-11-22T00:41:16Z","title_canon_sha256":"01daa3f7015354be1507df458b45f5b50053e7c15761d308956b30515de77888"},"schema_version":"1.0","source":{"id":"1811.08978","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1811.08978","created_at":"2026-05-17T23:59:48Z"},{"alias_kind":"arxiv_version","alias_value":"1811.08978v2","created_at":"2026-05-17T23:59:48Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1811.08978","created_at":"2026-05-17T23:59:48Z"},{"alias_kind":"pith_short_12","alias_value":"35QSYQX3FUM2","created_at":"2026-05-18T12:32:02Z"},{"alias_kind":"pith_short_16","alias_value":"35QSYQX3FUM2MBWV","created_at":"2026-05-18T12:32:02Z"},{"alias_kind":"pith_short_8","alias_value":"35QSYQX3","created_at":"2026-05-18T12:32:02Z"}],"graph_snapshots":[{"event_id":"sha256:13706c07741e6c26f44af72220ee4d155967691778e0cd3135590203ff88c52c","target":"graph","created_at":"2026-05-17T23:59:48Z","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":"Using the Planck scale as an absolute bound of half-life, we give a quick estimate, in the manner of Feynman's fine-structure method, of the highest possible atomic number. We find, upon simple extrapolation, that element 168 would constitute the end of the Periodic Table and its isotope with atomic weight 411, being the most stable. These are remarkably close to current best estimates obtained from sophisticated and much more involved Hartree-Fock calculations.","authors_text":"Stavros Garoufalidis, Yang-Hui He","cross_cats":["hep-th"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-th","submitted_at":"2018-11-22T00:41:16Z","title":"An Elementary End of the Periodic Table"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1811.08978","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:daf8a634fde1349eabe88a8d6099f80d45c4b3bf9ec9ffca2d01ff22f6c9c5b0","target":"record","created_at":"2026-05-17T23:59:48Z","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":"939177456f582e09ef056bb17d90886690fbaea440d8b4886e93e7a363710f36","cross_cats_sorted":["hep-th"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-th","submitted_at":"2018-11-22T00:41:16Z","title_canon_sha256":"01daa3f7015354be1507df458b45f5b50053e7c15761d308956b30515de77888"},"schema_version":"1.0","source":{"id":"1811.08978","kind":"arxiv","version":2}},"canonical_sha256":"df612c42fb2d19a606d56caad2b3b18683a35abc63fb73efa322dd03f754e377","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"df612c42fb2d19a606d56caad2b3b18683a35abc63fb73efa322dd03f754e377","first_computed_at":"2026-05-17T23:59:48.102253Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:59:48.102253Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"4M6aG2qQhY5CdPceYtTuoHH/P33XP+d42UZxBx1w4Fml+N/+rjNAO4+XPURJrjXVgYH0MALSVmScE7bALD83BQ==","signature_status":"signed_v1","signed_at":"2026-05-17T23:59:48.102782Z","signed_message":"canonical_sha256_bytes"},"source_id":"1811.08978","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:daf8a634fde1349eabe88a8d6099f80d45c4b3bf9ec9ffca2d01ff22f6c9c5b0","sha256:13706c07741e6c26f44af72220ee4d155967691778e0cd3135590203ff88c52c"],"state_sha256":"5b38421a93befbeae87fa1215bb3311d5913523d8d9308a40af90ce5cc242661"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"r87OB9rped4oso/katPqJHCk+J7M2SEHW1seYxVTkhXK/K4+pmAzzHHTGG2hgm+ZS/Bqret+A+h3dMNxb/RYAg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-26T12:41:43.362610Z","bundle_sha256":"0abb02d7ad9e29fc76130021158242c0670fa10bf16388cba5be4c03366bc53f"}}