{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:EQHUK6IS3VJ7HTRW54AMBCNZNX","short_pith_number":"pith:EQHUK6IS","canonical_record":{"source":{"id":"1805.07791","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2018-05-20T16:30:21Z","cross_cats_sorted":[],"title_canon_sha256":"c96febd27e68b8fc5a2506df072749e3f39eb9cefd40e9035e2bf6cbff92290b","abstract_canon_sha256":"cb4589f615500c05e1d55b2e744dccb9d715e2d1e39e3cded3de8495f38723ed"},"schema_version":"1.0"},"canonical_sha256":"240f457912dd53f3ce36ef00c089b96df6893dd784f15323131c6a5b49f6ebf8","source":{"kind":"arxiv","id":"1805.07791","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1805.07791","created_at":"2026-05-18T00:15:27Z"},{"alias_kind":"arxiv_version","alias_value":"1805.07791v2","created_at":"2026-05-18T00:15:27Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1805.07791","created_at":"2026-05-18T00:15:27Z"},{"alias_kind":"pith_short_12","alias_value":"EQHUK6IS3VJ7","created_at":"2026-05-18T12:32:22Z"},{"alias_kind":"pith_short_16","alias_value":"EQHUK6IS3VJ7HTRW","created_at":"2026-05-18T12:32:22Z"},{"alias_kind":"pith_short_8","alias_value":"EQHUK6IS","created_at":"2026-05-18T12:32:22Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:EQHUK6IS3VJ7HTRW54AMBCNZNX","target":"record","payload":{"canonical_record":{"source":{"id":"1805.07791","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2018-05-20T16:30:21Z","cross_cats_sorted":[],"title_canon_sha256":"c96febd27e68b8fc5a2506df072749e3f39eb9cefd40e9035e2bf6cbff92290b","abstract_canon_sha256":"cb4589f615500c05e1d55b2e744dccb9d715e2d1e39e3cded3de8495f38723ed"},"schema_version":"1.0"},"canonical_sha256":"240f457912dd53f3ce36ef00c089b96df6893dd784f15323131c6a5b49f6ebf8","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:15:27.300447Z","signature_b64":"GeidFtcVj32hjIUqlC5VbnuIlEYz1LlcQn8zWDK8dND/3ePWuzpvGzVS9eRxEhUVxOavFS1ZUEKqWrcd2BvLBQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"240f457912dd53f3ce36ef00c089b96df6893dd784f15323131c6a5b49f6ebf8","last_reissued_at":"2026-05-18T00:15:27.299728Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:15:27.299728Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1805.07791","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":"2026-05-18T00:15:27Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"7Ne9+cbHV/+wZDPgxA5pR2X+YBZbbviGf+BXjqXVqwCKQMimyZQIlCTi7pFLE8/SUWbSLL8TmEZJnIhLzWhNAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-22T04:04:28.473921Z"},"content_sha256":"95eac35cadc8222d6636492fd5c7390fa1a0bc4653938b3cc0a566ac8c497430","schema_version":"1.0","event_id":"sha256:95eac35cadc8222d6636492fd5c7390fa1a0bc4653938b3cc0a566ac8c497430"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:EQHUK6IS3VJ7HTRW54AMBCNZNX","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"First principles study of M2InC (M = Zr, Hf and Ta) MAX phases: The effect of M atomic species","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.mtrl-sci","authors_text":"A. K. M. A. Islam, F. Sultana, M. A. Ali, M. M. Hossain, M. M. Uddin, S. H. Naqib","submitted_at":"2018-05-20T16:30:21Z","abstract_excerpt":"We have studied the physical properties of M2InC (M = Zr, Hf and Ta) MAX phases ternary carbides using density functional theory (DFT) methodology. The structural, elastic and electronic properties are revisited (and found to be in good agreement with recently reported results). The charge density distribution, Fermi surface features, Vickers hardness, dynamical stability, thermodynamics and optical properties have been investigated for the first time. The calculated single crystal elastic constants and phonon dispersion curves endorse the mechanical and dynamical stability of all the compound"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1805.07791","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":"2026-05-18T00:15:27Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"bbmf2VuE7lutIJrD5Xey+CisZMXmJieUpbfyDrhnLfV1RtO0j2LmOQrL/1Qp4XHPGAT6pVO7jD3ubBJgIlFMBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-22T04:04:28.474271Z"},"content_sha256":"81f0717d95b50e5f2a6c920f017f5d0f20f12313959b7f6a44af167327649b3f","schema_version":"1.0","event_id":"sha256:81f0717d95b50e5f2a6c920f017f5d0f20f12313959b7f6a44af167327649b3f"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/EQHUK6IS3VJ7HTRW54AMBCNZNX/bundle.json","state_url":"https://pith.science/pith/EQHUK6IS3VJ7HTRW54AMBCNZNX/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/EQHUK6IS3VJ7HTRW54AMBCNZNX/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":"2026-06-22T04:04:28Z","links":{"resolver":"https://pith.science/pith/EQHUK6IS3VJ7HTRW54AMBCNZNX","bundle":"https://pith.science/pith/EQHUK6IS3VJ7HTRW54AMBCNZNX/bundle.json","state":"https://pith.science/pith/EQHUK6IS3VJ7HTRW54AMBCNZNX/state.json","well_known_bundle":"https://pith.science/.well-known/pith/EQHUK6IS3VJ7HTRW54AMBCNZNX/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:EQHUK6IS3VJ7HTRW54AMBCNZNX","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":"cb4589f615500c05e1d55b2e744dccb9d715e2d1e39e3cded3de8495f38723ed","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2018-05-20T16:30:21Z","title_canon_sha256":"c96febd27e68b8fc5a2506df072749e3f39eb9cefd40e9035e2bf6cbff92290b"},"schema_version":"1.0","source":{"id":"1805.07791","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1805.07791","created_at":"2026-05-18T00:15:27Z"},{"alias_kind":"arxiv_version","alias_value":"1805.07791v2","created_at":"2026-05-18T00:15:27Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1805.07791","created_at":"2026-05-18T00:15:27Z"},{"alias_kind":"pith_short_12","alias_value":"EQHUK6IS3VJ7","created_at":"2026-05-18T12:32:22Z"},{"alias_kind":"pith_short_16","alias_value":"EQHUK6IS3VJ7HTRW","created_at":"2026-05-18T12:32:22Z"},{"alias_kind":"pith_short_8","alias_value":"EQHUK6IS","created_at":"2026-05-18T12:32:22Z"}],"graph_snapshots":[{"event_id":"sha256:81f0717d95b50e5f2a6c920f017f5d0f20f12313959b7f6a44af167327649b3f","target":"graph","created_at":"2026-05-18T00:15:27Z","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 have studied the physical properties of M2InC (M = Zr, Hf and Ta) MAX phases ternary carbides using density functional theory (DFT) methodology. The structural, elastic and electronic properties are revisited (and found to be in good agreement with recently reported results). The charge density distribution, Fermi surface features, Vickers hardness, dynamical stability, thermodynamics and optical properties have been investigated for the first time. The calculated single crystal elastic constants and phonon dispersion curves endorse the mechanical and dynamical stability of all the compound","authors_text":"A. K. M. A. Islam, F. Sultana, M. A. Ali, M. M. Hossain, M. M. Uddin, S. H. Naqib","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2018-05-20T16:30:21Z","title":"First principles study of M2InC (M = Zr, Hf and Ta) MAX phases: The effect of M atomic species"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1805.07791","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":"sha256:95eac35cadc8222d6636492fd5c7390fa1a0bc4653938b3cc0a566ac8c497430","target":"record","created_at":"2026-05-18T00:15:27Z","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":"cb4589f615500c05e1d55b2e744dccb9d715e2d1e39e3cded3de8495f38723ed","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2018-05-20T16:30:21Z","title_canon_sha256":"c96febd27e68b8fc5a2506df072749e3f39eb9cefd40e9035e2bf6cbff92290b"},"schema_version":"1.0","source":{"id":"1805.07791","kind":"arxiv","version":2}},"canonical_sha256":"240f457912dd53f3ce36ef00c089b96df6893dd784f15323131c6a5b49f6ebf8","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"240f457912dd53f3ce36ef00c089b96df6893dd784f15323131c6a5b49f6ebf8","first_computed_at":"2026-05-18T00:15:27.299728Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:15:27.299728Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"GeidFtcVj32hjIUqlC5VbnuIlEYz1LlcQn8zWDK8dND/3ePWuzpvGzVS9eRxEhUVxOavFS1ZUEKqWrcd2BvLBQ==","signature_status":"signed_v1","signed_at":"2026-05-18T00:15:27.300447Z","signed_message":"canonical_sha256_bytes"},"source_id":"1805.07791","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:95eac35cadc8222d6636492fd5c7390fa1a0bc4653938b3cc0a566ac8c497430","sha256:81f0717d95b50e5f2a6c920f017f5d0f20f12313959b7f6a44af167327649b3f"],"state_sha256":"a756233adfc828e86ec47322180f42279de50bd8ac6df30f835510dfd103dd51"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"bfogTN+fJhK79xDGdiN7dkeiwQwOaz8j71zyOepSi/7bFuB95mdOFNjprKyAE/maDO/ajncwE08a+iWnQ9QNBw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-22T04:04:28.476283Z","bundle_sha256":"3359d32e3fdb874097154594f5f2ccd8d6eb1f6ebad47ee3cbd4110c8195dc33"}}