{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2010:G7J34GC2DNRLNLSUQAUNUOG55U","short_pith_number":"pith:G7J34GC2","canonical_record":{"source":{"id":"1007.2320","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2010-07-14T13:03:14Z","cross_cats_sorted":[],"title_canon_sha256":"46da3b8d06e67fa144c96846092718efc6f1c4ec6f596a9dea620779bd945c72","abstract_canon_sha256":"52cb0cbe370190bee5a1c6b7eaf2e3985f393674da4ea2e460b4e70fd21021eb"},"schema_version":"1.0"},"canonical_sha256":"37d3be185a1b62b6ae548028da38dded23cb2d722ce5ab50713d0ce5d5076a87","source":{"kind":"arxiv","id":"1007.2320","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1007.2320","created_at":"2026-05-18T04:29:34Z"},{"alias_kind":"arxiv_version","alias_value":"1007.2320v2","created_at":"2026-05-18T04:29:34Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1007.2320","created_at":"2026-05-18T04:29:34Z"},{"alias_kind":"pith_short_12","alias_value":"G7J34GC2DNRL","created_at":"2026-05-18T12:26:07Z"},{"alias_kind":"pith_short_16","alias_value":"G7J34GC2DNRLNLSU","created_at":"2026-05-18T12:26:07Z"},{"alias_kind":"pith_short_8","alias_value":"G7J34GC2","created_at":"2026-05-18T12:26:07Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2010:G7J34GC2DNRLNLSUQAUNUOG55U","target":"record","payload":{"canonical_record":{"source":{"id":"1007.2320","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2010-07-14T13:03:14Z","cross_cats_sorted":[],"title_canon_sha256":"46da3b8d06e67fa144c96846092718efc6f1c4ec6f596a9dea620779bd945c72","abstract_canon_sha256":"52cb0cbe370190bee5a1c6b7eaf2e3985f393674da4ea2e460b4e70fd21021eb"},"schema_version":"1.0"},"canonical_sha256":"37d3be185a1b62b6ae548028da38dded23cb2d722ce5ab50713d0ce5d5076a87","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T04:29:34.869819Z","signature_b64":"HJQzJmEZ0zxppDlkSZDAKAFxmJ0Uoc5SZrDCMJud0pYogpHM5F8uMb2Am77JFRjcZ8QgfQW2t9ta79HkrRuGCw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"37d3be185a1b62b6ae548028da38dded23cb2d722ce5ab50713d0ce5d5076a87","last_reissued_at":"2026-05-18T04:29:34.869297Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T04:29:34.869297Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1007.2320","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":"2026-05-18T04:29:34Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"WMFv4iHYdIYIYKjTtgd12+XHVLnNfN28BJfXmlCoId3mm7yKRJKG79AgAWCQg9AydWaD8H2tTgfSaa1UlZenBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T17:58:20.586064Z"},"content_sha256":"0ec1ce7a2d1faa3b5a73c9666a6a91f8ddd22212f30ab229357d8fa6dac48771","schema_version":"1.0","event_id":"sha256:0ec1ce7a2d1faa3b5a73c9666a6a91f8ddd22212f30ab229357d8fa6dac48771"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2010:G7J34GC2DNRLNLSUQAUNUOG55U","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Synchrotron X-ray Diffraction Study of BaFe2As2 and CaFe2As2 at High Pressures up to 56 GPa: Ambient and Low-Temperatures Down to 33 K","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.supr-con","authors_text":"D. M. Trots, E. Greenberg, G. Garbarino, H. Hosono, L. Dubrovinsky, R. Mittal, S. K. Mishra, S. L. Chaplot, S. Matsuishi, S. V. Ovsyannikov, Th. Brueckel, Y. Su","submitted_at":"2010-07-14T13:03:14Z","abstract_excerpt":"We report high pressure powder synchrotron x-ray diffraction studies on MFe2As2 (M=Ba, Ca) over a range of temperatures and pressures up to about 56 GPa using a membrane diamond anvil cell. A phase transition to a collapsed tetragonal phase is observed in both compounds upon compression. However, at 300 (33) K in the Ba-compound the transition occurs at 26 (29) GPa, which is a much higher pressure than 1.7 (0.3) GPa at 300 (40) K in the Ca-compound, due to its larger volume. It is important to note that the transition in both compounds occurs when they are compressed to almost the same value o"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1007.2320","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":"2026-05-18T04:29:34Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"hI8pYdQEjpL729zIOpx9BixhHWkfSYrxZPK/IBUYbgxJ1NJNQSm2AI8O0e8V+1fBZmR4nJAuoUAv2CiQ56ppBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T17:58:20.586626Z"},"content_sha256":"b222afa35b87a96e2bb6daee8f721d34cbf666e1b08f25ac3094956c77f62d65","schema_version":"1.0","event_id":"sha256:b222afa35b87a96e2bb6daee8f721d34cbf666e1b08f25ac3094956c77f62d65"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/G7J34GC2DNRLNLSUQAUNUOG55U/bundle.json","state_url":"https://pith.science/pith/G7J34GC2DNRLNLSUQAUNUOG55U/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/G7J34GC2DNRLNLSUQAUNUOG55U/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":"2026-05-25T17:58:20Z","links":{"resolver":"https://pith.science/pith/G7J34GC2DNRLNLSUQAUNUOG55U","bundle":"https://pith.science/pith/G7J34GC2DNRLNLSUQAUNUOG55U/bundle.json","state":"https://pith.science/pith/G7J34GC2DNRLNLSUQAUNUOG55U/state.json","well_known_bundle":"https://pith.science/.well-known/pith/G7J34GC2DNRLNLSUQAUNUOG55U/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2010:G7J34GC2DNRLNLSUQAUNUOG55U","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":"52cb0cbe370190bee5a1c6b7eaf2e3985f393674da4ea2e460b4e70fd21021eb","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2010-07-14T13:03:14Z","title_canon_sha256":"46da3b8d06e67fa144c96846092718efc6f1c4ec6f596a9dea620779bd945c72"},"schema_version":"1.0","source":{"id":"1007.2320","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1007.2320","created_at":"2026-05-18T04:29:34Z"},{"alias_kind":"arxiv_version","alias_value":"1007.2320v2","created_at":"2026-05-18T04:29:34Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1007.2320","created_at":"2026-05-18T04:29:34Z"},{"alias_kind":"pith_short_12","alias_value":"G7J34GC2DNRL","created_at":"2026-05-18T12:26:07Z"},{"alias_kind":"pith_short_16","alias_value":"G7J34GC2DNRLNLSU","created_at":"2026-05-18T12:26:07Z"},{"alias_kind":"pith_short_8","alias_value":"G7J34GC2","created_at":"2026-05-18T12:26:07Z"}],"graph_snapshots":[{"event_id":"sha256:b222afa35b87a96e2bb6daee8f721d34cbf666e1b08f25ac3094956c77f62d65","target":"graph","created_at":"2026-05-18T04:29:34Z","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":"We report high pressure powder synchrotron x-ray diffraction studies on MFe2As2 (M=Ba, Ca) over a range of temperatures and pressures up to about 56 GPa using a membrane diamond anvil cell. A phase transition to a collapsed tetragonal phase is observed in both compounds upon compression. However, at 300 (33) K in the Ba-compound the transition occurs at 26 (29) GPa, which is a much higher pressure than 1.7 (0.3) GPa at 300 (40) K in the Ca-compound, due to its larger volume. It is important to note that the transition in both compounds occurs when they are compressed to almost the same value o","authors_text":"D. M. Trots, E. Greenberg, G. Garbarino, H. Hosono, L. Dubrovinsky, R. Mittal, S. K. Mishra, S. L. Chaplot, S. Matsuishi, S. V. Ovsyannikov, Th. Brueckel, Y. Su","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2010-07-14T13:03:14Z","title":"Synchrotron X-ray Diffraction Study of BaFe2As2 and CaFe2As2 at High Pressures up to 56 GPa: Ambient and Low-Temperatures Down to 33 K"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1007.2320","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":"sha256:0ec1ce7a2d1faa3b5a73c9666a6a91f8ddd22212f30ab229357d8fa6dac48771","target":"record","created_at":"2026-05-18T04:29:34Z","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":"52cb0cbe370190bee5a1c6b7eaf2e3985f393674da4ea2e460b4e70fd21021eb","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2010-07-14T13:03:14Z","title_canon_sha256":"46da3b8d06e67fa144c96846092718efc6f1c4ec6f596a9dea620779bd945c72"},"schema_version":"1.0","source":{"id":"1007.2320","kind":"arxiv","version":2}},"canonical_sha256":"37d3be185a1b62b6ae548028da38dded23cb2d722ce5ab50713d0ce5d5076a87","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"37d3be185a1b62b6ae548028da38dded23cb2d722ce5ab50713d0ce5d5076a87","first_computed_at":"2026-05-18T04:29:34.869297Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T04:29:34.869297Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"HJQzJmEZ0zxppDlkSZDAKAFxmJ0Uoc5SZrDCMJud0pYogpHM5F8uMb2Am77JFRjcZ8QgfQW2t9ta79HkrRuGCw==","signature_status":"signed_v1","signed_at":"2026-05-18T04:29:34.869819Z","signed_message":"canonical_sha256_bytes"},"source_id":"1007.2320","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:0ec1ce7a2d1faa3b5a73c9666a6a91f8ddd22212f30ab229357d8fa6dac48771","sha256:b222afa35b87a96e2bb6daee8f721d34cbf666e1b08f25ac3094956c77f62d65"],"state_sha256":"82c8ddbcae5f882fd2e3fb7633f3af351db88f22af47bbfaef1769ebfa60ff28"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"n1RUUv9nofYqrZmX2DFuONKUEq+Xvb8dnMzdoqQ1X2LY2x4RJF8am92J+sVuX3tIH5HbwY7Kn/tt2G3XTLwNBA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-25T17:58:20.590045Z","bundle_sha256":"0f85d6ca96d93ae0e8d36eada9cdee060a4d99fc1a7d00be3d11bd433bdc1494"}}