{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2014:PJCMDNEHPKVWLVBFDG4QTP5VM6","short_pith_number":"pith:PJCMDNEH","canonical_record":{"source":{"id":"1412.8354","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2014-12-29T14:35:54Z","cross_cats_sorted":[],"title_canon_sha256":"d3feae0bc73fd6cf98ca7768dd48ef192cfb338a64146f0bff5eb3cb7a7ace60","abstract_canon_sha256":"2c987b0b238a6e514052591b0246a0be1ae47df88e5992a0724161af73aec290"},"schema_version":"1.0"},"canonical_sha256":"7a44c1b4877aab65d42519b909bfb567b137bc4e4645e2e7d0bc9e28ebba2847","source":{"kind":"arxiv","id":"1412.8354","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1412.8354","created_at":"2026-05-18T02:30:23Z"},{"alias_kind":"arxiv_version","alias_value":"1412.8354v1","created_at":"2026-05-18T02:30:23Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1412.8354","created_at":"2026-05-18T02:30:23Z"},{"alias_kind":"pith_short_12","alias_value":"PJCMDNEHPKVW","created_at":"2026-05-18T12:28:43Z"},{"alias_kind":"pith_short_16","alias_value":"PJCMDNEHPKVWLVBF","created_at":"2026-05-18T12:28:43Z"},{"alias_kind":"pith_short_8","alias_value":"PJCMDNEH","created_at":"2026-05-18T12:28:43Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2014:PJCMDNEHPKVWLVBFDG4QTP5VM6","target":"record","payload":{"canonical_record":{"source":{"id":"1412.8354","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2014-12-29T14:35:54Z","cross_cats_sorted":[],"title_canon_sha256":"d3feae0bc73fd6cf98ca7768dd48ef192cfb338a64146f0bff5eb3cb7a7ace60","abstract_canon_sha256":"2c987b0b238a6e514052591b0246a0be1ae47df88e5992a0724161af73aec290"},"schema_version":"1.0"},"canonical_sha256":"7a44c1b4877aab65d42519b909bfb567b137bc4e4645e2e7d0bc9e28ebba2847","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:30:23.418991Z","signature_b64":"+hAIiAcVWMd59qRG0JqgMQ0x2KsKXM6K30jzD/hKxWA+OPnPq1Ntkx95Evyk4Syl/o5kOwLIZlaYXbERI5B0Bg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"7a44c1b4877aab65d42519b909bfb567b137bc4e4645e2e7d0bc9e28ebba2847","last_reissued_at":"2026-05-18T02:30:23.418539Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:30:23.418539Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1412.8354","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":"2026-05-18T02:30:23Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Ui5O2EYL3qsx155cOUm7bdQa9zAjrXVBOSGrXMyh31h+TTgroNtBD3oSJBs0PmHgNvvj67ZFQR+bG/qT0BoSCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-19T20:34:49.431692Z"},"content_sha256":"ada37a2bf4e943f8c22ba433f4eaaed2bd0030c14444de1e0cce08972462a05d","schema_version":"1.0","event_id":"sha256:ada37a2bf4e943f8c22ba433f4eaaed2bd0030c14444de1e0cce08972462a05d"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2014:PJCMDNEHPKVWLVBFDG4QTP5VM6","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Hydrogen storage in rippled graphene: perspectives from multi-scale simulations","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.mes-hall","authors_text":"Antonio Rossi, Riccardo Farchioni, Tommaso Cavallucci, Valentina Tozzini, Vito Dario Camiola, Vittorio Pellegrini","submitted_at":"2014-12-29T14:35:54Z","abstract_excerpt":"Exploring new perspectives for green technologies is one of the challenges of the third millennium, in which the need for non-polluting and renewable powering has become primary. In this context, the use of hydrogen as a fuel is promising, since the energy released in its oxidation (~285 kJ/mole) is three times that released, on average, by hydrocarbons, and the combustion product is water (Ramage, 1983). Being hydrogen a vector of chemical energy, efficient conservation and non-dispersive transportation are the main goals. Three issues must be considered to this respect: (i) storage capacity "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1412.8354","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":"2026-05-18T02:30:23Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"cN5j66iEVKikjSMzI3zkE/A+mYqIKRtvLw8QmbTAnYeShUUqpCEdcNsHizyWoy4yoHyLRlce+7qBkYCRRZcdBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-19T20:34:49.432039Z"},"content_sha256":"0b146f1088ecd5e18aa7d34efdd7b5e98d3be6accf6fc7dee0b3a0b4c715d79e","schema_version":"1.0","event_id":"sha256:0b146f1088ecd5e18aa7d34efdd7b5e98d3be6accf6fc7dee0b3a0b4c715d79e"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/PJCMDNEHPKVWLVBFDG4QTP5VM6/bundle.json","state_url":"https://pith.science/pith/PJCMDNEHPKVWLVBFDG4QTP5VM6/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/PJCMDNEHPKVWLVBFDG4QTP5VM6/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":"2026-05-19T20:34:49Z","links":{"resolver":"https://pith.science/pith/PJCMDNEHPKVWLVBFDG4QTP5VM6","bundle":"https://pith.science/pith/PJCMDNEHPKVWLVBFDG4QTP5VM6/bundle.json","state":"https://pith.science/pith/PJCMDNEHPKVWLVBFDG4QTP5VM6/state.json","well_known_bundle":"https://pith.science/.well-known/pith/PJCMDNEHPKVWLVBFDG4QTP5VM6/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2014:PJCMDNEHPKVWLVBFDG4QTP5VM6","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":"2c987b0b238a6e514052591b0246a0be1ae47df88e5992a0724161af73aec290","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2014-12-29T14:35:54Z","title_canon_sha256":"d3feae0bc73fd6cf98ca7768dd48ef192cfb338a64146f0bff5eb3cb7a7ace60"},"schema_version":"1.0","source":{"id":"1412.8354","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1412.8354","created_at":"2026-05-18T02:30:23Z"},{"alias_kind":"arxiv_version","alias_value":"1412.8354v1","created_at":"2026-05-18T02:30:23Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1412.8354","created_at":"2026-05-18T02:30:23Z"},{"alias_kind":"pith_short_12","alias_value":"PJCMDNEHPKVW","created_at":"2026-05-18T12:28:43Z"},{"alias_kind":"pith_short_16","alias_value":"PJCMDNEHPKVWLVBF","created_at":"2026-05-18T12:28:43Z"},{"alias_kind":"pith_short_8","alias_value":"PJCMDNEH","created_at":"2026-05-18T12:28:43Z"}],"graph_snapshots":[{"event_id":"sha256:0b146f1088ecd5e18aa7d34efdd7b5e98d3be6accf6fc7dee0b3a0b4c715d79e","target":"graph","created_at":"2026-05-18T02:30:23Z","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"},"paper":{"abstract_excerpt":"Exploring new perspectives for green technologies is one of the challenges of the third millennium, in which the need for non-polluting and renewable powering has become primary. In this context, the use of hydrogen as a fuel is promising, since the energy released in its oxidation (~285 kJ/mole) is three times that released, on average, by hydrocarbons, and the combustion product is water (Ramage, 1983). Being hydrogen a vector of chemical energy, efficient conservation and non-dispersive transportation are the main goals. Three issues must be considered to this respect: (i) storage capacity ","authors_text":"Antonio Rossi, Riccardo Farchioni, Tommaso Cavallucci, Valentina Tozzini, Vito Dario Camiola, Vittorio Pellegrini","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2014-12-29T14:35:54Z","title":"Hydrogen storage in rippled graphene: perspectives from multi-scale simulations"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1412.8354","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:ada37a2bf4e943f8c22ba433f4eaaed2bd0030c14444de1e0cce08972462a05d","target":"record","created_at":"2026-05-18T02:30:23Z","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":"2c987b0b238a6e514052591b0246a0be1ae47df88e5992a0724161af73aec290","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2014-12-29T14:35:54Z","title_canon_sha256":"d3feae0bc73fd6cf98ca7768dd48ef192cfb338a64146f0bff5eb3cb7a7ace60"},"schema_version":"1.0","source":{"id":"1412.8354","kind":"arxiv","version":1}},"canonical_sha256":"7a44c1b4877aab65d42519b909bfb567b137bc4e4645e2e7d0bc9e28ebba2847","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"7a44c1b4877aab65d42519b909bfb567b137bc4e4645e2e7d0bc9e28ebba2847","first_computed_at":"2026-05-18T02:30:23.418539Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:30:23.418539Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"+hAIiAcVWMd59qRG0JqgMQ0x2KsKXM6K30jzD/hKxWA+OPnPq1Ntkx95Evyk4Syl/o5kOwLIZlaYXbERI5B0Bg==","signature_status":"signed_v1","signed_at":"2026-05-18T02:30:23.418991Z","signed_message":"canonical_sha256_bytes"},"source_id":"1412.8354","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:ada37a2bf4e943f8c22ba433f4eaaed2bd0030c14444de1e0cce08972462a05d","sha256:0b146f1088ecd5e18aa7d34efdd7b5e98d3be6accf6fc7dee0b3a0b4c715d79e"],"state_sha256":"329c2395dd3965885dbb8f6f62f05a74fcb26faf5d7466ad857b75be6efe62e1"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"5cxl0YQHlfllV6Y4DBrFDkPwKuSUtF4wPT3Rs6pHU09V5nJNDBVoHE/mcxcJH2DJ5RJMSZqt8W9s3Yy079VuAQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-19T20:34:49.434005Z","bundle_sha256":"739210a7bc508a6582d8a9419fe0048b696fe820e8d0ed3775a0a233947c1723"}}