{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2019:JSTX2COPUF67TN6L2O32DSDLKN","short_pith_number":"pith:JSTX2COP","canonical_record":{"source":{"id":"1908.08757","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.app-ph","submitted_at":"2019-08-23T10:55:18Z","cross_cats_sorted":["cond-mat.mtrl-sci"],"title_canon_sha256":"be035eaca1fd2c90ae68b99b59b7328334d40e348b7bbb4d639424cbba797948","abstract_canon_sha256":"6e361e76079e8562ebf5c046ef3874a583dbd84d8e3e6e9ef9c65971a31fe42f"},"schema_version":"1.0"},"canonical_sha256":"4ca77d09cfa17df9b7cbd3b7a1c86b53547d152763ea5d6ed99101de08c09b61","source":{"kind":"arxiv","id":"1908.08757","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1908.08757","created_at":"2026-07-04T23:59:23Z"},{"alias_kind":"arxiv_version","alias_value":"1908.08757v1","created_at":"2026-07-04T23:59:23Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1908.08757","created_at":"2026-07-04T23:59:23Z"},{"alias_kind":"pith_short_12","alias_value":"JSTX2COPUF67","created_at":"2026-07-04T23:59:23Z"},{"alias_kind":"pith_short_16","alias_value":"JSTX2COPUF67TN6L","created_at":"2026-07-04T23:59:23Z"},{"alias_kind":"pith_short_8","alias_value":"JSTX2COP","created_at":"2026-07-04T23:59:23Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2019:JSTX2COPUF67TN6L2O32DSDLKN","target":"record","payload":{"canonical_record":{"source":{"id":"1908.08757","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.app-ph","submitted_at":"2019-08-23T10:55:18Z","cross_cats_sorted":["cond-mat.mtrl-sci"],"title_canon_sha256":"be035eaca1fd2c90ae68b99b59b7328334d40e348b7bbb4d639424cbba797948","abstract_canon_sha256":"6e361e76079e8562ebf5c046ef3874a583dbd84d8e3e6e9ef9c65971a31fe42f"},"schema_version":"1.0"},"canonical_sha256":"4ca77d09cfa17df9b7cbd3b7a1c86b53547d152763ea5d6ed99101de08c09b61","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-04T23:59:23.902790Z","signature_b64":"Id3pVGZtzbDUkYKtqZMys+hxfqDEbWnnpcwaqRE6BJA8g8KcPrrvBiiSh1z7cYZSKDrxivYmipABoeuLYm8LAA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"4ca77d09cfa17df9b7cbd3b7a1c86b53547d152763ea5d6ed99101de08c09b61","last_reissued_at":"2026-07-04T23:59:23.902391Z","signature_status":"signed_v1","first_computed_at":"2026-07-04T23:59:23.902391Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1908.08757","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":"2026-07-04T23:59:23Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"FWyGBX9Rq+5AblrbJJbBY9fkaz88DCo/0624yP38h8/WLRKtoR4qCr1KHaItmoTdXOnpJmEZcDCnLtraNc1eAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-16T06:37:38.347884Z"},"content_sha256":"4f85e06801d54b0496ab3f9d9e1cfdce5967e02737476877f0dd965885dc8ab4","schema_version":"1.0","event_id":"sha256:4f85e06801d54b0496ab3f9d9e1cfdce5967e02737476877f0dd965885dc8ab4"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2019:JSTX2COPUF67TN6L2O32DSDLKN","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Compressive performance and crack propagation in Al alloy/Ti2AlC composites","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.mtrl-sci"],"primary_cat":"physics.app-ph","authors_text":"D.A.H.Hanaor, G.Proust, I.Karaman, L.Hu, M.Foley, M.Radovic, W.H.Kan","submitted_at":"2019-08-23T10:55:18Z","abstract_excerpt":"Composite materials comprising a porous Ti2AlC matrix and Al 6061 alloy were fabricated by a current-activated pressure assisted melt infiltration process. Coarse, medium and fine meso-structures were prepared with Al alloy filled pores of differing sizes. Materials were subjected to uniaxial compressive loading up to stresses of 668 MPa, leading to the failure of specimens through crack propagation in both phases. As-fabricated and post-failure specimens were analysed by X-ray microscopy and electron microscopy. Quasi-static mechanical testing results revealed that compressive strength was th"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1908.08757","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/1908.08757/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":"2026-07-04T23:59:23Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"T4pJ2fKjy+Ub350B8QD4M8muYGsWzRUF+TNeg3CItMUPZM6iJF1HqE4liQBO0iGxTa7DWBMMaXiMfW1SZimBCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-16T06:37:38.348468Z"},"content_sha256":"7106c02f0714044266732281c1356c80a06baad886f3fee5f5531ea4410c19ec","schema_version":"1.0","event_id":"sha256:7106c02f0714044266732281c1356c80a06baad886f3fee5f5531ea4410c19ec"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/JSTX2COPUF67TN6L2O32DSDLKN/bundle.json","state_url":"https://pith.science/pith/JSTX2COPUF67TN6L2O32DSDLKN/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/JSTX2COPUF67TN6L2O32DSDLKN/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":"2026-08-16T06:37:38Z","links":{"resolver":"https://pith.science/pith/JSTX2COPUF67TN6L2O32DSDLKN","bundle":"https://pith.science/pith/JSTX2COPUF67TN6L2O32DSDLKN/bundle.json","state":"https://pith.science/pith/JSTX2COPUF67TN6L2O32DSDLKN/state.json","well_known_bundle":"https://pith.science/.well-known/pith/JSTX2COPUF67TN6L2O32DSDLKN/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:JSTX2COPUF67TN6L2O32DSDLKN","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":"6e361e76079e8562ebf5c046ef3874a583dbd84d8e3e6e9ef9c65971a31fe42f","cross_cats_sorted":["cond-mat.mtrl-sci"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.app-ph","submitted_at":"2019-08-23T10:55:18Z","title_canon_sha256":"be035eaca1fd2c90ae68b99b59b7328334d40e348b7bbb4d639424cbba797948"},"schema_version":"1.0","source":{"id":"1908.08757","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1908.08757","created_at":"2026-07-04T23:59:23Z"},{"alias_kind":"arxiv_version","alias_value":"1908.08757v1","created_at":"2026-07-04T23:59:23Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1908.08757","created_at":"2026-07-04T23:59:23Z"},{"alias_kind":"pith_short_12","alias_value":"JSTX2COPUF67","created_at":"2026-07-04T23:59:23Z"},{"alias_kind":"pith_short_16","alias_value":"JSTX2COPUF67TN6L","created_at":"2026-07-04T23:59:23Z"},{"alias_kind":"pith_short_8","alias_value":"JSTX2COP","created_at":"2026-07-04T23:59:23Z"}],"graph_snapshots":[{"event_id":"sha256:7106c02f0714044266732281c1356c80a06baad886f3fee5f5531ea4410c19ec","target":"graph","created_at":"2026-07-04T23:59:23Z","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/1908.08757/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Composite materials comprising a porous Ti2AlC matrix and Al 6061 alloy were fabricated by a current-activated pressure assisted melt infiltration process. Coarse, medium and fine meso-structures were prepared with Al alloy filled pores of differing sizes. Materials were subjected to uniaxial compressive loading up to stresses of 668 MPa, leading to the failure of specimens through crack propagation in both phases. As-fabricated and post-failure specimens were analysed by X-ray microscopy and electron microscopy. Quasi-static mechanical testing results revealed that compressive strength was th","authors_text":"D.A.H.Hanaor, G.Proust, I.Karaman, L.Hu, M.Foley, M.Radovic, W.H.Kan","cross_cats":["cond-mat.mtrl-sci"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.app-ph","submitted_at":"2019-08-23T10:55:18Z","title":"Compressive performance and crack propagation in Al alloy/Ti2AlC composites"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1908.08757","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":"sha256:4f85e06801d54b0496ab3f9d9e1cfdce5967e02737476877f0dd965885dc8ab4","target":"record","created_at":"2026-07-04T23:59:23Z","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":"6e361e76079e8562ebf5c046ef3874a583dbd84d8e3e6e9ef9c65971a31fe42f","cross_cats_sorted":["cond-mat.mtrl-sci"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.app-ph","submitted_at":"2019-08-23T10:55:18Z","title_canon_sha256":"be035eaca1fd2c90ae68b99b59b7328334d40e348b7bbb4d639424cbba797948"},"schema_version":"1.0","source":{"id":"1908.08757","kind":"arxiv","version":1}},"canonical_sha256":"4ca77d09cfa17df9b7cbd3b7a1c86b53547d152763ea5d6ed99101de08c09b61","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"4ca77d09cfa17df9b7cbd3b7a1c86b53547d152763ea5d6ed99101de08c09b61","first_computed_at":"2026-07-04T23:59:23.902391Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T23:59:23.902391Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Id3pVGZtzbDUkYKtqZMys+hxfqDEbWnnpcwaqRE6BJA8g8KcPrrvBiiSh1z7cYZSKDrxivYmipABoeuLYm8LAA==","signature_status":"signed_v1","signed_at":"2026-07-04T23:59:23.902790Z","signed_message":"canonical_sha256_bytes"},"source_id":"1908.08757","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:4f85e06801d54b0496ab3f9d9e1cfdce5967e02737476877f0dd965885dc8ab4","sha256:7106c02f0714044266732281c1356c80a06baad886f3fee5f5531ea4410c19ec"],"state_sha256":"ed6c72544f94065dc73a6c49cbe4524dff650d881100c1b4623f7b0116b3e9a9"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"r+GaEikhH06N6cacbaIrr99KxSwg+7TyDvAVDf+FFX/2oED+CSC+NPvtLJ6pLTFgFMOmaJNRFTOGhc/JbbiDDQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-16T06:37:38.353166Z","bundle_sha256":"ece514f3e8a77a447e7fd6dd5d0a0d9f483261b004026185ec0f54e17ea0f0a5"}}