{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2026:MG4B5VJD2QJGGKVNEBIWCTZXNR","short_pith_number":"pith:MG4B5VJD","canonical_record":{"source":{"id":"2607.06741","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2026-07-07T19:11:43Z","cross_cats_sorted":[],"title_canon_sha256":"a64eec9f0e25aeda3b436bc4dcf353b47b103a3822aa7d066eb2d8715bc97f72","abstract_canon_sha256":"252d79242d16d2ea5232a880328276eb19f2f441c0dcbd73758b4af8bc6cc8db"},"schema_version":"1.0"},"canonical_sha256":"61b81ed523d412632aad2051614f376c7bd04dfbc2264ee4d97e056b18971830","source":{"kind":"arxiv","id":"2607.06741","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2607.06741","created_at":"2026-07-09T00:19:24Z"},{"alias_kind":"arxiv_version","alias_value":"2607.06741v1","created_at":"2026-07-09T00:19:24Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2607.06741","created_at":"2026-07-09T00:19:24Z"},{"alias_kind":"pith_short_12","alias_value":"MG4B5VJD2QJG","created_at":"2026-07-09T00:19:24Z"},{"alias_kind":"pith_short_16","alias_value":"MG4B5VJD2QJGGKVN","created_at":"2026-07-09T00:19:24Z"},{"alias_kind":"pith_short_8","alias_value":"MG4B5VJD","created_at":"2026-07-09T00:19:24Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2026:MG4B5VJD2QJGGKVNEBIWCTZXNR","target":"record","payload":{"canonical_record":{"source":{"id":"2607.06741","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2026-07-07T19:11:43Z","cross_cats_sorted":[],"title_canon_sha256":"a64eec9f0e25aeda3b436bc4dcf353b47b103a3822aa7d066eb2d8715bc97f72","abstract_canon_sha256":"252d79242d16d2ea5232a880328276eb19f2f441c0dcbd73758b4af8bc6cc8db"},"schema_version":"1.0"},"canonical_sha256":"61b81ed523d412632aad2051614f376c7bd04dfbc2264ee4d97e056b18971830","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-09T00:19:24.930034Z","signature_b64":"zaFljwx6ZOFz6Q4p4hFgFKZVjKKKOhkHsZQ0uvU2WbmPp1mzeBb/G6gWk+UxAnos57308Cw1P0PL20AZ7XcFCA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"61b81ed523d412632aad2051614f376c7bd04dfbc2264ee4d97e056b18971830","last_reissued_at":"2026-07-09T00:19:24.929378Z","signature_status":"signed_v1","first_computed_at":"2026-07-09T00:19:24.929378Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2607.06741","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":"2026-07-09T00:19:24Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"I9cEsMCOpAqIGoAXeQflA2sKVbCwshOB9HmQWoap0OSNfunTnQZ9C/OJOTWc1TY9Qpxg8FfX7ehBvpXhl3svDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-17T12:29:53.103564Z"},"content_sha256":"bf92ea7da12047da3b247baf6a5fecbe85f8824b3b042aff74ab44d53812ea28","schema_version":"1.0","event_id":"sha256:bf92ea7da12047da3b247baf6a5fecbe85f8824b3b042aff74ab44d53812ea28"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2026:MG4B5VJD2QJGGKVNEBIWCTZXNR","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"First-Principles Investigation of the Al-V Phase Diagram","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.mtrl-sci","authors_text":"AKM Sadman Mahmud, Hassan AlBuhairan, Marek Mihalkovic, Michael Widom","submitted_at":"2026-07-07T19:11:43Z","abstract_excerpt":"The Al-V alloy system contains a number of phases including several with complex structures and at least two exhibiting sites of partial occupation. Through electronic density functional theory-based total energy calculations combined with methods of statistical mechanics, we examine the relative stability of phases at finite temperatures. We construct composition-continuous free energy models for the V-rich solid solution and for one of the complex intermetallic phases. In the V-rich region, we identify three ground states that transform to the solid solution at elevated temperatures. We also"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2607.06741","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2607.06741/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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":"2026-07-09T00:19:24Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"5fDTDFaxEypuIfhDwlDCGAh/XW7KUb8R7OFICkYWWZY4kzKFGzvwURabFIQtUsxpTCKrsnvZxkiX1JDSoq2VBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-17T12:29:53.105306Z"},"content_sha256":"2cfee6510ce92bafe3767f4d5309be8ffc0406337553299ba33e55d167519660","schema_version":"1.0","event_id":"sha256:2cfee6510ce92bafe3767f4d5309be8ffc0406337553299ba33e55d167519660"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/MG4B5VJD2QJGGKVNEBIWCTZXNR/bundle.json","state_url":"https://pith.science/pith/MG4B5VJD2QJGGKVNEBIWCTZXNR/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/MG4B5VJD2QJGGKVNEBIWCTZXNR/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":"2026-08-17T12:29:53Z","links":{"resolver":"https://pith.science/pith/MG4B5VJD2QJGGKVNEBIWCTZXNR","bundle":"https://pith.science/pith/MG4B5VJD2QJGGKVNEBIWCTZXNR/bundle.json","state":"https://pith.science/pith/MG4B5VJD2QJGGKVNEBIWCTZXNR/state.json","well_known_bundle":"https://pith.science/.well-known/pith/MG4B5VJD2QJGGKVNEBIWCTZXNR/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2026:MG4B5VJD2QJGGKVNEBIWCTZXNR","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":"252d79242d16d2ea5232a880328276eb19f2f441c0dcbd73758b4af8bc6cc8db","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2026-07-07T19:11:43Z","title_canon_sha256":"a64eec9f0e25aeda3b436bc4dcf353b47b103a3822aa7d066eb2d8715bc97f72"},"schema_version":"1.0","source":{"id":"2607.06741","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2607.06741","created_at":"2026-07-09T00:19:24Z"},{"alias_kind":"arxiv_version","alias_value":"2607.06741v1","created_at":"2026-07-09T00:19:24Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2607.06741","created_at":"2026-07-09T00:19:24Z"},{"alias_kind":"pith_short_12","alias_value":"MG4B5VJD2QJG","created_at":"2026-07-09T00:19:24Z"},{"alias_kind":"pith_short_16","alias_value":"MG4B5VJD2QJGGKVN","created_at":"2026-07-09T00:19:24Z"},{"alias_kind":"pith_short_8","alias_value":"MG4B5VJD","created_at":"2026-07-09T00:19:24Z"}],"graph_snapshots":[{"event_id":"sha256:2cfee6510ce92bafe3767f4d5309be8ffc0406337553299ba33e55d167519660","target":"graph","created_at":"2026-07-09T00:19:24Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/2607.06741/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"The Al-V alloy system contains a number of phases including several with complex structures and at least two exhibiting sites of partial occupation. Through electronic density functional theory-based total energy calculations combined with methods of statistical mechanics, we examine the relative stability of phases at finite temperatures. We construct composition-continuous free energy models for the V-rich solid solution and for one of the complex intermetallic phases. In the V-rich region, we identify three ground states that transform to the solid solution at elevated temperatures. We also","authors_text":"AKM Sadman Mahmud, Hassan AlBuhairan, Marek Mihalkovic, Michael Widom","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2026-07-07T19:11:43Z","title":"First-Principles Investigation of the Al-V Phase Diagram"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2607.06741","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:bf92ea7da12047da3b247baf6a5fecbe85f8824b3b042aff74ab44d53812ea28","target":"record","created_at":"2026-07-09T00:19:24Z","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":"252d79242d16d2ea5232a880328276eb19f2f441c0dcbd73758b4af8bc6cc8db","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2026-07-07T19:11:43Z","title_canon_sha256":"a64eec9f0e25aeda3b436bc4dcf353b47b103a3822aa7d066eb2d8715bc97f72"},"schema_version":"1.0","source":{"id":"2607.06741","kind":"arxiv","version":1}},"canonical_sha256":"61b81ed523d412632aad2051614f376c7bd04dfbc2264ee4d97e056b18971830","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"61b81ed523d412632aad2051614f376c7bd04dfbc2264ee4d97e056b18971830","first_computed_at":"2026-07-09T00:19:24.929378Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-09T00:19:24.929378Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"zaFljwx6ZOFz6Q4p4hFgFKZVjKKKOhkHsZQ0uvU2WbmPp1mzeBb/G6gWk+UxAnos57308Cw1P0PL20AZ7XcFCA==","signature_status":"signed_v1","signed_at":"2026-07-09T00:19:24.930034Z","signed_message":"canonical_sha256_bytes"},"source_id":"2607.06741","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:bf92ea7da12047da3b247baf6a5fecbe85f8824b3b042aff74ab44d53812ea28","sha256:2cfee6510ce92bafe3767f4d5309be8ffc0406337553299ba33e55d167519660"],"state_sha256":"bd3fa99a312edc8ef052eaefae3f9cfcd67aaf9512d14b013185318099de5d78"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"24OBqkwubI01Z7kY78TtIEenC8kmGLw+Z9Mk4432oqQRFjf394s3Cg95C4AIhc63rnm1sZMhh315Xab4ldWPDQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-17T12:29:53.114043Z","bundle_sha256":"13716447b8b682239279758bf442cbbfd80e8dfdf794d68d217f183ec48725f1"}}