{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2019:UL5H7URWAASXQHSZQATDH4OPZZ","short_pith_number":"pith:UL5H7URW","canonical_record":{"source":{"id":"1901.06163","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2019-01-18T10:13:56Z","cross_cats_sorted":[],"title_canon_sha256":"8f5f05167df27dd51c2a7af88f50350ea7225814e0abe3eac33fd102477d690c","abstract_canon_sha256":"86cfa41321d3b822e12a11fcf478c85e551324507502ae96d9a757f937618707"},"schema_version":"1.0"},"canonical_sha256":"a2fa7fd2360025781e59802633f1cfce69b829f7ebd3d2b2d6ba30d6a137b28b","source":{"kind":"arxiv","id":"1901.06163","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1901.06163","created_at":"2026-05-17T23:41:00Z"},{"alias_kind":"arxiv_version","alias_value":"1901.06163v1","created_at":"2026-05-17T23:41:00Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1901.06163","created_at":"2026-05-17T23:41:00Z"},{"alias_kind":"pith_short_12","alias_value":"UL5H7URWAASX","created_at":"2026-05-18T12:33:30Z"},{"alias_kind":"pith_short_16","alias_value":"UL5H7URWAASXQHSZ","created_at":"2026-05-18T12:33:30Z"},{"alias_kind":"pith_short_8","alias_value":"UL5H7URW","created_at":"2026-05-18T12:33:30Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2019:UL5H7URWAASXQHSZQATDH4OPZZ","target":"record","payload":{"canonical_record":{"source":{"id":"1901.06163","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2019-01-18T10:13:56Z","cross_cats_sorted":[],"title_canon_sha256":"8f5f05167df27dd51c2a7af88f50350ea7225814e0abe3eac33fd102477d690c","abstract_canon_sha256":"86cfa41321d3b822e12a11fcf478c85e551324507502ae96d9a757f937618707"},"schema_version":"1.0"},"canonical_sha256":"a2fa7fd2360025781e59802633f1cfce69b829f7ebd3d2b2d6ba30d6a137b28b","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:41:00.921842Z","signature_b64":"uXpgYrKfVw+3NYPaGNz3zZWjI3+LO+X5DrQv9UeFkYnt2DhmTjBYZF/5Gvz+lRgEpg8YN59TZrYtAAwShwGICQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"a2fa7fd2360025781e59802633f1cfce69b829f7ebd3d2b2d6ba30d6a137b28b","last_reissued_at":"2026-05-17T23:41:00.921163Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:41:00.921163Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1901.06163","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":"2026-05-17T23:41:00Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"N0FieospaSPxpc+LM+yICgblogw0dkVPW7yCqFjOYZXp/MZO0MYUnFjeeexPDQ471N2Ayhs3ww568YenrjfdCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-31T13:29:19.360931Z"},"content_sha256":"5f5d43ec3e0829bd54a5086c4f8cdd3ebaea9a63f180041bb5e1b4c47b3dc762","schema_version":"1.0","event_id":"sha256:5f5d43ec3e0829bd54a5086c4f8cdd3ebaea9a63f180041bb5e1b4c47b3dc762"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2019:UL5H7URWAASXQHSZQATDH4OPZZ","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Recent advances in MXenes: from fundamentals to applications","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.mtrl-sci","authors_text":"Abhishek K. Singh, Avanish Mishra, Mohammad Khazaei, Natarajan S. Venkataramanan, Seiji Yunoki","submitted_at":"2019-01-18T10:13:56Z","abstract_excerpt":"The family of MAX phases and their derivative MXenes are continuously growing in terms of both crystalline and composition varieties. In the last couple of years, several breakthroughs have been achieved that boosted the synthesis of novel MAX phases with ordered double transition metals and, consequently, the synthesis of novel MXenes with a higher chemical diversity and structural complexity, rarely seen in other families of two-dimensional (2D) materials. Considering the various elemental composition possibilities, surface functional tunability, various magnetic orders, and large spin$-$orb"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1901.06163","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":""},"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":"2026-05-17T23:41:00Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"6NTWwKOUZI3sN5tUSD0gU/tGh76OVaRn+sTzbVrJ5rk8BBChavKMexeW17Z8R950jkLVBv3TpuLVBbZ3lK5WCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-31T13:29:19.361708Z"},"content_sha256":"69fea50c81cd0635f37523038d90a0a122a8816b79732a34fd49433a1fb80822","schema_version":"1.0","event_id":"sha256:69fea50c81cd0635f37523038d90a0a122a8816b79732a34fd49433a1fb80822"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/UL5H7URWAASXQHSZQATDH4OPZZ/bundle.json","state_url":"https://pith.science/pith/UL5H7URWAASXQHSZQATDH4OPZZ/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/UL5H7URWAASXQHSZQATDH4OPZZ/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":"2026-05-31T13:29:19Z","links":{"resolver":"https://pith.science/pith/UL5H7URWAASXQHSZQATDH4OPZZ","bundle":"https://pith.science/pith/UL5H7URWAASXQHSZQATDH4OPZZ/bundle.json","state":"https://pith.science/pith/UL5H7URWAASXQHSZQATDH4OPZZ/state.json","well_known_bundle":"https://pith.science/.well-known/pith/UL5H7URWAASXQHSZQATDH4OPZZ/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:UL5H7URWAASXQHSZQATDH4OPZZ","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":"86cfa41321d3b822e12a11fcf478c85e551324507502ae96d9a757f937618707","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2019-01-18T10:13:56Z","title_canon_sha256":"8f5f05167df27dd51c2a7af88f50350ea7225814e0abe3eac33fd102477d690c"},"schema_version":"1.0","source":{"id":"1901.06163","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1901.06163","created_at":"2026-05-17T23:41:00Z"},{"alias_kind":"arxiv_version","alias_value":"1901.06163v1","created_at":"2026-05-17T23:41:00Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1901.06163","created_at":"2026-05-17T23:41:00Z"},{"alias_kind":"pith_short_12","alias_value":"UL5H7URWAASX","created_at":"2026-05-18T12:33:30Z"},{"alias_kind":"pith_short_16","alias_value":"UL5H7URWAASXQHSZ","created_at":"2026-05-18T12:33:30Z"},{"alias_kind":"pith_short_8","alias_value":"UL5H7URW","created_at":"2026-05-18T12:33:30Z"}],"graph_snapshots":[{"event_id":"sha256:69fea50c81cd0635f37523038d90a0a122a8816b79732a34fd49433a1fb80822","target":"graph","created_at":"2026-05-17T23:41:00Z","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 family of MAX phases and their derivative MXenes are continuously growing in terms of both crystalline and composition varieties. In the last couple of years, several breakthroughs have been achieved that boosted the synthesis of novel MAX phases with ordered double transition metals and, consequently, the synthesis of novel MXenes with a higher chemical diversity and structural complexity, rarely seen in other families of two-dimensional (2D) materials. Considering the various elemental composition possibilities, surface functional tunability, various magnetic orders, and large spin$-$orb","authors_text":"Abhishek K. Singh, Avanish Mishra, Mohammad Khazaei, Natarajan S. Venkataramanan, Seiji Yunoki","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2019-01-18T10:13:56Z","title":"Recent advances in MXenes: from fundamentals to applications"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1901.06163","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":"sha256:5f5d43ec3e0829bd54a5086c4f8cdd3ebaea9a63f180041bb5e1b4c47b3dc762","target":"record","created_at":"2026-05-17T23:41:00Z","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":"86cfa41321d3b822e12a11fcf478c85e551324507502ae96d9a757f937618707","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2019-01-18T10:13:56Z","title_canon_sha256":"8f5f05167df27dd51c2a7af88f50350ea7225814e0abe3eac33fd102477d690c"},"schema_version":"1.0","source":{"id":"1901.06163","kind":"arxiv","version":1}},"canonical_sha256":"a2fa7fd2360025781e59802633f1cfce69b829f7ebd3d2b2d6ba30d6a137b28b","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"a2fa7fd2360025781e59802633f1cfce69b829f7ebd3d2b2d6ba30d6a137b28b","first_computed_at":"2026-05-17T23:41:00.921163Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:41:00.921163Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"uXpgYrKfVw+3NYPaGNz3zZWjI3+LO+X5DrQv9UeFkYnt2DhmTjBYZF/5Gvz+lRgEpg8YN59TZrYtAAwShwGICQ==","signature_status":"signed_v1","signed_at":"2026-05-17T23:41:00.921842Z","signed_message":"canonical_sha256_bytes"},"source_id":"1901.06163","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:5f5d43ec3e0829bd54a5086c4f8cdd3ebaea9a63f180041bb5e1b4c47b3dc762","sha256:69fea50c81cd0635f37523038d90a0a122a8816b79732a34fd49433a1fb80822"],"state_sha256":"9e2d81bf8b8497b30b946625997314040e1e5235213355a8e1809cce4297f60a"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"d0XX3l1Pz/z/lVweDtQfDDWsj8WMuVtvl9r03na07elb4oS8ZxUDhcEIwDzTFHRB8GJ/y0NLgQWLbouBqcCKDQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-31T13:29:19.365189Z","bundle_sha256":"6d5eda549cde56d442e171e66925fd3812ff9e23ebb1f778250bdc3255b98bab"}}