{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2011:E6HZYM4PQWHVUVQSJ7JUYZZC2Q","short_pith_number":"pith:E6HZYM4P","canonical_record":{"source":{"id":"1109.1208","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.other","submitted_at":"2011-09-06T15:09:30Z","cross_cats_sorted":[],"title_canon_sha256":"abab02bd954c019f11dceb99404a3e4b8b8d18e5d797fbf74704d3efd62bcc95","abstract_canon_sha256":"b8aa3dfb213ac5e442319b9e73715f0a8e89ea7a7c7c6b892db6a4f95e32330a"},"schema_version":"1.0"},"canonical_sha256":"278f9c338f858f5a56124fd34c6722d43aef033c51603d98b3364d9f3de168ba","source":{"kind":"arxiv","id":"1109.1208","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1109.1208","created_at":"2026-05-18T04:10:46Z"},{"alias_kind":"arxiv_version","alias_value":"1109.1208v2","created_at":"2026-05-18T04:10:46Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1109.1208","created_at":"2026-05-18T04:10:46Z"},{"alias_kind":"pith_short_12","alias_value":"E6HZYM4PQWHV","created_at":"2026-05-18T12:26:26Z"},{"alias_kind":"pith_short_16","alias_value":"E6HZYM4PQWHVUVQS","created_at":"2026-05-18T12:26:26Z"},{"alias_kind":"pith_short_8","alias_value":"E6HZYM4P","created_at":"2026-05-18T12:26:26Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2011:E6HZYM4PQWHVUVQSJ7JUYZZC2Q","target":"record","payload":{"canonical_record":{"source":{"id":"1109.1208","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.other","submitted_at":"2011-09-06T15:09:30Z","cross_cats_sorted":[],"title_canon_sha256":"abab02bd954c019f11dceb99404a3e4b8b8d18e5d797fbf74704d3efd62bcc95","abstract_canon_sha256":"b8aa3dfb213ac5e442319b9e73715f0a8e89ea7a7c7c6b892db6a4f95e32330a"},"schema_version":"1.0"},"canonical_sha256":"278f9c338f858f5a56124fd34c6722d43aef033c51603d98b3364d9f3de168ba","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T04:10:46.817941Z","signature_b64":"k4nxe1EAWAnafWjxZqGfbjcABLsbwTedwUX9Tf4cg3af3uZC0fREc/MnE/EKT7ZzeCx1Q6H8ce39sAZJHqj8DA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"278f9c338f858f5a56124fd34c6722d43aef033c51603d98b3364d9f3de168ba","last_reissued_at":"2026-05-18T04:10:46.817551Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T04:10:46.817551Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1109.1208","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":"2026-05-18T04:10:46Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"qJyDZary8SOF6IssOK06QX5MP4rtM3Fl25KFQudd6AP9pyzISUzU6tmFYdNkKFI4pwn2X/3UTum4XiHVTc+IDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-04T09:09:38.959996Z"},"content_sha256":"fecb145f70f4b1d9b82136be7e19b334b9418bc07c72cb53311e04ab52c524bf","schema_version":"1.0","event_id":"sha256:fecb145f70f4b1d9b82136be7e19b334b9418bc07c72cb53311e04ab52c524bf"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2011:E6HZYM4PQWHVUVQSJ7JUYZZC2Q","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Microscopic approach to the bcc phase of solid 4He","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.other","authors_text":"Jordi Boronat, Riccardo Rota","submitted_at":"2011-09-06T15:09:30Z","abstract_excerpt":"The coexistence between the hcp and bcc phases of solid 4He at fixed pressure, and at three different temperatures, is studied by means of the path integral Monte Carlo method. Microscopic results for the main energetic and structure properties of the two phases are reported. The differences between hcp and bcc 4He are shown to be small with the obvious exception of the static structure factor. When crossing the phase transition line, the most significant changes are observed in the kinetic energy per particle and in the Lindemann ratio, both pointing to a less correlated quantum solid in the "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1109.1208","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":"2026-05-18T04:10:46Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"nkXo/KTXfTppOE03DJRSk32ftuu9zVIgburoediWONtudtSUak9O3WNVqyv9hK5gFNYKMk+Xw6TB9evotnlDDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-04T09:09:38.960404Z"},"content_sha256":"bda8d68b5d6a5aaa6d79ea1304a97a253f6ee892e88ab305de987cc53ecb1d7a","schema_version":"1.0","event_id":"sha256:bda8d68b5d6a5aaa6d79ea1304a97a253f6ee892e88ab305de987cc53ecb1d7a"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/E6HZYM4PQWHVUVQSJ7JUYZZC2Q/bundle.json","state_url":"https://pith.science/pith/E6HZYM4PQWHVUVQSJ7JUYZZC2Q/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/E6HZYM4PQWHVUVQSJ7JUYZZC2Q/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":"2026-07-04T09:09:38Z","links":{"resolver":"https://pith.science/pith/E6HZYM4PQWHVUVQSJ7JUYZZC2Q","bundle":"https://pith.science/pith/E6HZYM4PQWHVUVQSJ7JUYZZC2Q/bundle.json","state":"https://pith.science/pith/E6HZYM4PQWHVUVQSJ7JUYZZC2Q/state.json","well_known_bundle":"https://pith.science/.well-known/pith/E6HZYM4PQWHVUVQSJ7JUYZZC2Q/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2011:E6HZYM4PQWHVUVQSJ7JUYZZC2Q","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":"b8aa3dfb213ac5e442319b9e73715f0a8e89ea7a7c7c6b892db6a4f95e32330a","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.other","submitted_at":"2011-09-06T15:09:30Z","title_canon_sha256":"abab02bd954c019f11dceb99404a3e4b8b8d18e5d797fbf74704d3efd62bcc95"},"schema_version":"1.0","source":{"id":"1109.1208","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1109.1208","created_at":"2026-05-18T04:10:46Z"},{"alias_kind":"arxiv_version","alias_value":"1109.1208v2","created_at":"2026-05-18T04:10:46Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1109.1208","created_at":"2026-05-18T04:10:46Z"},{"alias_kind":"pith_short_12","alias_value":"E6HZYM4PQWHV","created_at":"2026-05-18T12:26:26Z"},{"alias_kind":"pith_short_16","alias_value":"E6HZYM4PQWHVUVQS","created_at":"2026-05-18T12:26:26Z"},{"alias_kind":"pith_short_8","alias_value":"E6HZYM4P","created_at":"2026-05-18T12:26:26Z"}],"graph_snapshots":[{"event_id":"sha256:bda8d68b5d6a5aaa6d79ea1304a97a253f6ee892e88ab305de987cc53ecb1d7a","target":"graph","created_at":"2026-05-18T04:10:46Z","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":"The coexistence between the hcp and bcc phases of solid 4He at fixed pressure, and at three different temperatures, is studied by means of the path integral Monte Carlo method. Microscopic results for the main energetic and structure properties of the two phases are reported. The differences between hcp and bcc 4He are shown to be small with the obvious exception of the static structure factor. When crossing the phase transition line, the most significant changes are observed in the kinetic energy per particle and in the Lindemann ratio, both pointing to a less correlated quantum solid in the ","authors_text":"Jordi Boronat, Riccardo Rota","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.other","submitted_at":"2011-09-06T15:09:30Z","title":"Microscopic approach to the bcc phase of solid 4He"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1109.1208","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:fecb145f70f4b1d9b82136be7e19b334b9418bc07c72cb53311e04ab52c524bf","target":"record","created_at":"2026-05-18T04:10:46Z","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":"b8aa3dfb213ac5e442319b9e73715f0a8e89ea7a7c7c6b892db6a4f95e32330a","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.other","submitted_at":"2011-09-06T15:09:30Z","title_canon_sha256":"abab02bd954c019f11dceb99404a3e4b8b8d18e5d797fbf74704d3efd62bcc95"},"schema_version":"1.0","source":{"id":"1109.1208","kind":"arxiv","version":2}},"canonical_sha256":"278f9c338f858f5a56124fd34c6722d43aef033c51603d98b3364d9f3de168ba","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"278f9c338f858f5a56124fd34c6722d43aef033c51603d98b3364d9f3de168ba","first_computed_at":"2026-05-18T04:10:46.817551Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T04:10:46.817551Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"k4nxe1EAWAnafWjxZqGfbjcABLsbwTedwUX9Tf4cg3af3uZC0fREc/MnE/EKT7ZzeCx1Q6H8ce39sAZJHqj8DA==","signature_status":"signed_v1","signed_at":"2026-05-18T04:10:46.817941Z","signed_message":"canonical_sha256_bytes"},"source_id":"1109.1208","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:fecb145f70f4b1d9b82136be7e19b334b9418bc07c72cb53311e04ab52c524bf","sha256:bda8d68b5d6a5aaa6d79ea1304a97a253f6ee892e88ab305de987cc53ecb1d7a"],"state_sha256":"b7761826ed8b03c27de58fa244ca3fcf86837acd608865d4298f9197c19f7b2c"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"uyZWPZVIqkVN5TJ1RiaM/yKX0t3uoLhdRJbGRcpiojD4duKaUtX4qVfrQeocYluZQkDA5CsdRg/TJ0fwZik2DQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-04T09:09:38.962527Z","bundle_sha256":"62fd7496a5a3f7b4b707b9bf018a28a6de63f9ca84457e3e7b23ac3e46e765a8"}}