{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2021:ENXIDUJSWPPIFQJ7VZZXK533HL","short_pith_number":"pith:ENXIDUJS","canonical_record":{"source":{"id":"2111.13600","kind":"arxiv","version":2},"metadata":{"license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2021-11-26T16:54:35Z","cross_cats_sorted":[],"title_canon_sha256":"99338a2ea29018edbcb2075973e0702c72e297ecf865c3c3c7e5e0902f3c03a6","abstract_canon_sha256":"9d8f8bd1892db15acd18764671add2c1db68a2010262ae4861d8595973265165"},"schema_version":"1.0"},"canonical_sha256":"236e81d132b3de82c13fae7375777b3affbfba6e852afef9b5d431ae86d19149","source":{"kind":"arxiv","id":"2111.13600","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2111.13600","created_at":"2026-07-05T04:25:13Z"},{"alias_kind":"arxiv_version","alias_value":"2111.13600v2","created_at":"2026-07-05T04:25:13Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2111.13600","created_at":"2026-07-05T04:25:13Z"},{"alias_kind":"pith_short_12","alias_value":"ENXIDUJSWPPI","created_at":"2026-07-05T04:25:13Z"},{"alias_kind":"pith_short_16","alias_value":"ENXIDUJSWPPIFQJ7","created_at":"2026-07-05T04:25:13Z"},{"alias_kind":"pith_short_8","alias_value":"ENXIDUJS","created_at":"2026-07-05T04:25:13Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2021:ENXIDUJSWPPIFQJ7VZZXK533HL","target":"record","payload":{"canonical_record":{"source":{"id":"2111.13600","kind":"arxiv","version":2},"metadata":{"license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2021-11-26T16:54:35Z","cross_cats_sorted":[],"title_canon_sha256":"99338a2ea29018edbcb2075973e0702c72e297ecf865c3c3c7e5e0902f3c03a6","abstract_canon_sha256":"9d8f8bd1892db15acd18764671add2c1db68a2010262ae4861d8595973265165"},"schema_version":"1.0"},"canonical_sha256":"236e81d132b3de82c13fae7375777b3affbfba6e852afef9b5d431ae86d19149","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T04:25:13.930216Z","signature_b64":"II00S6Ejwd+nkeoVZU3eco8iE8q0IJc/+Ubg00NS7g/+B6KMNl/cGHinPXyn2l/1rXUEVB/aW6UwIvhGUyq+AA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"236e81d132b3de82c13fae7375777b3affbfba6e852afef9b5d431ae86d19149","last_reissued_at":"2026-07-05T04:25:13.929809Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T04:25:13.929809Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2111.13600","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":"2026-07-05T04:25:13Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"NB4nAA7jpjTUAmUPtLbzCmXXrUx2Bhlot/+jl3W2UDvcIVW22p69Y8RBZO2iO6G0SA5yOM/ixPpl2yz0IAR6BQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-18T11:43:37.116591Z"},"content_sha256":"5373d18372a6a0d8543afa80f0a7e2703cb220d18af5b17e15ab920c6b39eaf2","schema_version":"1.0","event_id":"sha256:5373d18372a6a0d8543afa80f0a7e2703cb220d18af5b17e15ab920c6b39eaf2"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2021:ENXIDUJSWPPIFQJ7VZZXK533HL","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Modeling the thermodynamics of the FeTi hydrogenation under para-equilibrium: an ab-initio and experimental study","license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.mtrl-sci","authors_text":"Archa Santhosh, Bo Sundman, Claudio Pistidda, Ebert Alvares, Martin Dornheim, Paul Jerabek, Tae Wook Heo, Yuanyuan Shang","submitted_at":"2021-11-26T16:54:35Z","abstract_excerpt":"FeTi-based hydrides have recently re-attracted attention as stationary hydrogen storage materials due to favorable reversibility, good sorption kinetics and relatively low costs compared to alternative intermetallic hydrides. Employing the OpenCalphad software, the thermodynamics of the (FeTi)$_{1-x}$H$_{x}$ (0 $\\leq x \\leq$ 1) system were assessed as a key basis for modeling hydrogenation of FeTi-based alloys. New thermodynamic data were acquired from our experimental pressure-composition-isotherm (PCI) curves, as well as first-principles calculations utilizing density functional theory (DFT)"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2111.13600","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2111.13600/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":"2026-07-05T04:25:13Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"y8IApK0gzquzVCVpucBmnRPSbUFQOpGCue/0cDD0hinKLA3RWiT+G8+r5ZBJ+RsTu4yG+wNWwQvmajHRC5o3Dw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-18T11:43:37.116949Z"},"content_sha256":"8fc1cd54d428849e7bb3fb63b066227053af3f5190f7bebad043190566b37c4a","schema_version":"1.0","event_id":"sha256:8fc1cd54d428849e7bb3fb63b066227053af3f5190f7bebad043190566b37c4a"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/ENXIDUJSWPPIFQJ7VZZXK533HL/bundle.json","state_url":"https://pith.science/pith/ENXIDUJSWPPIFQJ7VZZXK533HL/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/ENXIDUJSWPPIFQJ7VZZXK533HL/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":"2026-07-18T11:43:37Z","links":{"resolver":"https://pith.science/pith/ENXIDUJSWPPIFQJ7VZZXK533HL","bundle":"https://pith.science/pith/ENXIDUJSWPPIFQJ7VZZXK533HL/bundle.json","state":"https://pith.science/pith/ENXIDUJSWPPIFQJ7VZZXK533HL/state.json","well_known_bundle":"https://pith.science/.well-known/pith/ENXIDUJSWPPIFQJ7VZZXK533HL/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2021:ENXIDUJSWPPIFQJ7VZZXK533HL","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":"9d8f8bd1892db15acd18764671add2c1db68a2010262ae4861d8595973265165","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2021-11-26T16:54:35Z","title_canon_sha256":"99338a2ea29018edbcb2075973e0702c72e297ecf865c3c3c7e5e0902f3c03a6"},"schema_version":"1.0","source":{"id":"2111.13600","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2111.13600","created_at":"2026-07-05T04:25:13Z"},{"alias_kind":"arxiv_version","alias_value":"2111.13600v2","created_at":"2026-07-05T04:25:13Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2111.13600","created_at":"2026-07-05T04:25:13Z"},{"alias_kind":"pith_short_12","alias_value":"ENXIDUJSWPPI","created_at":"2026-07-05T04:25:13Z"},{"alias_kind":"pith_short_16","alias_value":"ENXIDUJSWPPIFQJ7","created_at":"2026-07-05T04:25:13Z"},{"alias_kind":"pith_short_8","alias_value":"ENXIDUJS","created_at":"2026-07-05T04:25:13Z"}],"graph_snapshots":[{"event_id":"sha256:8fc1cd54d428849e7bb3fb63b066227053af3f5190f7bebad043190566b37c4a","target":"graph","created_at":"2026-07-05T04:25:13Z","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/2111.13600/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"FeTi-based hydrides have recently re-attracted attention as stationary hydrogen storage materials due to favorable reversibility, good sorption kinetics and relatively low costs compared to alternative intermetallic hydrides. Employing the OpenCalphad software, the thermodynamics of the (FeTi)$_{1-x}$H$_{x}$ (0 $\\leq x \\leq$ 1) system were assessed as a key basis for modeling hydrogenation of FeTi-based alloys. New thermodynamic data were acquired from our experimental pressure-composition-isotherm (PCI) curves, as well as first-principles calculations utilizing density functional theory (DFT)","authors_text":"Archa Santhosh, Bo Sundman, Claudio Pistidda, Ebert Alvares, Martin Dornheim, Paul Jerabek, Tae Wook Heo, Yuanyuan Shang","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2021-11-26T16:54:35Z","title":"Modeling the thermodynamics of the FeTi hydrogenation under para-equilibrium: an ab-initio and experimental study"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2111.13600","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":"sha256:5373d18372a6a0d8543afa80f0a7e2703cb220d18af5b17e15ab920c6b39eaf2","target":"record","created_at":"2026-07-05T04:25:13Z","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":"9d8f8bd1892db15acd18764671add2c1db68a2010262ae4861d8595973265165","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2021-11-26T16:54:35Z","title_canon_sha256":"99338a2ea29018edbcb2075973e0702c72e297ecf865c3c3c7e5e0902f3c03a6"},"schema_version":"1.0","source":{"id":"2111.13600","kind":"arxiv","version":2}},"canonical_sha256":"236e81d132b3de82c13fae7375777b3affbfba6e852afef9b5d431ae86d19149","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"236e81d132b3de82c13fae7375777b3affbfba6e852afef9b5d431ae86d19149","first_computed_at":"2026-07-05T04:25:13.929809Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T04:25:13.929809Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"II00S6Ejwd+nkeoVZU3eco8iE8q0IJc/+Ubg00NS7g/+B6KMNl/cGHinPXyn2l/1rXUEVB/aW6UwIvhGUyq+AA==","signature_status":"signed_v1","signed_at":"2026-07-05T04:25:13.930216Z","signed_message":"canonical_sha256_bytes"},"source_id":"2111.13600","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:5373d18372a6a0d8543afa80f0a7e2703cb220d18af5b17e15ab920c6b39eaf2","sha256:8fc1cd54d428849e7bb3fb63b066227053af3f5190f7bebad043190566b37c4a"],"state_sha256":"c8c4947ad8560f1727af0410cbb470dcc633aabc4298b40979f84fdfc1378ba4"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"0RYEDg0TqZxFchuOnzr9aXEnswVZpgp0IBYeIYIip4E08GGHSlucOZVEvcFiCcZQiJXdPL//gKY/xei9KXZQCQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-18T11:43:37.118947Z","bundle_sha256":"03331f682bf48895cab8ee738ae186581e5e52b65de67ef929865da879f9d9d9"}}