{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2022:XXNATRJQBDKMKJMPN5HXKNBFQ7","short_pith_number":"pith:XXNATRJQ","canonical_record":{"source":{"id":"2202.12753","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2022-02-25T15:18:12Z","cross_cats_sorted":[],"title_canon_sha256":"d9c962ed1971d222b2753c5b22338cd3eccd2bb5ec01d573c07f8283a4bf730d","abstract_canon_sha256":"69e00bd59c9c98eeb8bad64c0fc9537bd2182da0d2a0cf9aa348c03a6936c61a"},"schema_version":"1.0"},"canonical_sha256":"bdda09c53008d4c5258f6f4f75342587dc50e514b8dc61bceed2757f5e8d983a","source":{"kind":"arxiv","id":"2202.12753","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2202.12753","created_at":"2026-07-05T04:00:08Z"},{"alias_kind":"arxiv_version","alias_value":"2202.12753v1","created_at":"2026-07-05T04:00:08Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2202.12753","created_at":"2026-07-05T04:00:08Z"},{"alias_kind":"pith_short_12","alias_value":"XXNATRJQBDKM","created_at":"2026-07-05T04:00:08Z"},{"alias_kind":"pith_short_16","alias_value":"XXNATRJQBDKMKJMP","created_at":"2026-07-05T04:00:08Z"},{"alias_kind":"pith_short_8","alias_value":"XXNATRJQ","created_at":"2026-07-05T04:00:08Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2022:XXNATRJQBDKMKJMPN5HXKNBFQ7","target":"record","payload":{"canonical_record":{"source":{"id":"2202.12753","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2022-02-25T15:18:12Z","cross_cats_sorted":[],"title_canon_sha256":"d9c962ed1971d222b2753c5b22338cd3eccd2bb5ec01d573c07f8283a4bf730d","abstract_canon_sha256":"69e00bd59c9c98eeb8bad64c0fc9537bd2182da0d2a0cf9aa348c03a6936c61a"},"schema_version":"1.0"},"canonical_sha256":"bdda09c53008d4c5258f6f4f75342587dc50e514b8dc61bceed2757f5e8d983a","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T04:00:08.058421Z","signature_b64":"Lh+mTu07iET4+wBKdlwv7LJpGF0gZ7BVLTgn5RTNAoh5KzoOEQF4ZcNUpx8r89D5HuAmlaK5RthXBlTgpFEcBw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"bdda09c53008d4c5258f6f4f75342587dc50e514b8dc61bceed2757f5e8d983a","last_reissued_at":"2026-07-05T04:00:08.058066Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T04:00:08.058066Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2202.12753","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":"2026-07-05T04:00:08Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"JWXU2w0XYSgd+yWuH71hz41wSoWWlOp/blQfZdt96b0di+/E5vRs0AlJ9Kip7BeY6625TI76erAzI6dBG7LfAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-19T18:27:03.625472Z"},"content_sha256":"0ff1a1abd304245970114ae4e73732a2fb778854ece3b6c7be9ef91267760701","schema_version":"1.0","event_id":"sha256:0ff1a1abd304245970114ae4e73732a2fb778854ece3b6c7be9ef91267760701"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2022:XXNATRJQBDKMKJMPN5HXKNBFQ7","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"TiFe$_{0.85}$Mn$_{0.05}$ alloy produced at industrial level for a hydrogen storage plant","license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.mtrl-sci","authors_text":"Bettina Neuman, Erika M. Dematteis, Fermin Cuevas, Giovanni Capurso, Jussara Barale, Marcello Baricco, Paola Rizzi, Stefano Deledda","submitted_at":"2022-02-25T15:18:12Z","abstract_excerpt":"In the use of hydrogen as large-scale energy vector, metal hydrides based on intermetallic compounds play a key role, thanks to mild temperatures and pressures required for the storage. It is increasingly necessary to develop hydrogen-based devices, and in this work, the intermetallic compound TiFe$_{0.85}$Mn$_{0.05}$ is evaluated and selected as H$_2$-carrier for a storage system of 50 kg of H$_2$. A batch of 5 kg of alloy was synthesized at industrial level and characterized through scanning electron microscopy and powder X-ray diffraction, to determine the structure and phase abundance. Mor"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2202.12753","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/2202.12753/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":"2026-07-05T04:00:08Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"M/AAUGBqGGsMjffGSaYUSIsxd+DChBbfywpFNhiBAH3HZXk9fD7Om2dLa7VqC0Yn8XlaZ3WdObMWyFzWCBG3Dg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-19T18:27:03.625993Z"},"content_sha256":"e48fcc7c17d30caab3aa6fb760df5b2be6401f4be6a6a33453cba8556cadde3a","schema_version":"1.0","event_id":"sha256:e48fcc7c17d30caab3aa6fb760df5b2be6401f4be6a6a33453cba8556cadde3a"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/XXNATRJQBDKMKJMPN5HXKNBFQ7/bundle.json","state_url":"https://pith.science/pith/XXNATRJQBDKMKJMPN5HXKNBFQ7/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/XXNATRJQBDKMKJMPN5HXKNBFQ7/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":"2026-08-19T18:27:03Z","links":{"resolver":"https://pith.science/pith/XXNATRJQBDKMKJMPN5HXKNBFQ7","bundle":"https://pith.science/pith/XXNATRJQBDKMKJMPN5HXKNBFQ7/bundle.json","state":"https://pith.science/pith/XXNATRJQBDKMKJMPN5HXKNBFQ7/state.json","well_known_bundle":"https://pith.science/.well-known/pith/XXNATRJQBDKMKJMPN5HXKNBFQ7/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2022:XXNATRJQBDKMKJMPN5HXKNBFQ7","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":"69e00bd59c9c98eeb8bad64c0fc9537bd2182da0d2a0cf9aa348c03a6936c61a","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2022-02-25T15:18:12Z","title_canon_sha256":"d9c962ed1971d222b2753c5b22338cd3eccd2bb5ec01d573c07f8283a4bf730d"},"schema_version":"1.0","source":{"id":"2202.12753","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2202.12753","created_at":"2026-07-05T04:00:08Z"},{"alias_kind":"arxiv_version","alias_value":"2202.12753v1","created_at":"2026-07-05T04:00:08Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2202.12753","created_at":"2026-07-05T04:00:08Z"},{"alias_kind":"pith_short_12","alias_value":"XXNATRJQBDKM","created_at":"2026-07-05T04:00:08Z"},{"alias_kind":"pith_short_16","alias_value":"XXNATRJQBDKMKJMP","created_at":"2026-07-05T04:00:08Z"},{"alias_kind":"pith_short_8","alias_value":"XXNATRJQ","created_at":"2026-07-05T04:00:08Z"}],"graph_snapshots":[{"event_id":"sha256:e48fcc7c17d30caab3aa6fb760df5b2be6401f4be6a6a33453cba8556cadde3a","target":"graph","created_at":"2026-07-05T04:00:08Z","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/2202.12753/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"In the use of hydrogen as large-scale energy vector, metal hydrides based on intermetallic compounds play a key role, thanks to mild temperatures and pressures required for the storage. It is increasingly necessary to develop hydrogen-based devices, and in this work, the intermetallic compound TiFe$_{0.85}$Mn$_{0.05}$ is evaluated and selected as H$_2$-carrier for a storage system of 50 kg of H$_2$. A batch of 5 kg of alloy was synthesized at industrial level and characterized through scanning electron microscopy and powder X-ray diffraction, to determine the structure and phase abundance. Mor","authors_text":"Bettina Neuman, Erika M. Dematteis, Fermin Cuevas, Giovanni Capurso, Jussara Barale, Marcello Baricco, Paola Rizzi, Stefano Deledda","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2022-02-25T15:18:12Z","title":"TiFe$_{0.85}$Mn$_{0.05}$ alloy produced at industrial level for a hydrogen storage plant"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2202.12753","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":"sha256:0ff1a1abd304245970114ae4e73732a2fb778854ece3b6c7be9ef91267760701","target":"record","created_at":"2026-07-05T04:00:08Z","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":"69e00bd59c9c98eeb8bad64c0fc9537bd2182da0d2a0cf9aa348c03a6936c61a","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2022-02-25T15:18:12Z","title_canon_sha256":"d9c962ed1971d222b2753c5b22338cd3eccd2bb5ec01d573c07f8283a4bf730d"},"schema_version":"1.0","source":{"id":"2202.12753","kind":"arxiv","version":1}},"canonical_sha256":"bdda09c53008d4c5258f6f4f75342587dc50e514b8dc61bceed2757f5e8d983a","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"bdda09c53008d4c5258f6f4f75342587dc50e514b8dc61bceed2757f5e8d983a","first_computed_at":"2026-07-05T04:00:08.058066Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T04:00:08.058066Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Lh+mTu07iET4+wBKdlwv7LJpGF0gZ7BVLTgn5RTNAoh5KzoOEQF4ZcNUpx8r89D5HuAmlaK5RthXBlTgpFEcBw==","signature_status":"signed_v1","signed_at":"2026-07-05T04:00:08.058421Z","signed_message":"canonical_sha256_bytes"},"source_id":"2202.12753","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:0ff1a1abd304245970114ae4e73732a2fb778854ece3b6c7be9ef91267760701","sha256:e48fcc7c17d30caab3aa6fb760df5b2be6401f4be6a6a33453cba8556cadde3a"],"state_sha256":"1542e11ae5c1f8cf6af0d7f72445845d826d3b1b92135cef0dcb049ae494b00f"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"tHQSxRriUrkN/bQHz2Fvx8QopwzpNrisqu0MWJDrKR8YA8PyLkZkvPlvi4afgMchW5X2p17JYntGcZHMZPrJCw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-19T18:27:03.630430Z","bundle_sha256":"ee213da4b0d69a77b28f2f572363515327ce709c2d103eb9b504769f9987d6cc"}}