{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2010:SYL2Y2V5RLB2Y2MIYOQEUBCCJ2","short_pith_number":"pith:SYL2Y2V5","canonical_record":{"source":{"id":"1003.4473","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2010-03-23T17:23:46Z","cross_cats_sorted":[],"title_canon_sha256":"c9b292d3eda6f01f05169a34d9960dd60ec6ac46f6671d12a48adb0f01995fdf","abstract_canon_sha256":"c6cac3e778455be32b18966e73b0b5aa26fa8459c59d5fdae06ccee5fa257596"},"schema_version":"1.0"},"canonical_sha256":"9617ac6abd8ac3ac6988c3a04a04424e91e850cb2839c726dd4341df59578e2e","source":{"kind":"arxiv","id":"1003.4473","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1003.4473","created_at":"2026-05-18T02:08:23Z"},{"alias_kind":"arxiv_version","alias_value":"1003.4473v1","created_at":"2026-05-18T02:08:23Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1003.4473","created_at":"2026-05-18T02:08:23Z"},{"alias_kind":"pith_short_12","alias_value":"SYL2Y2V5RLB2","created_at":"2026-05-18T12:26:13Z"},{"alias_kind":"pith_short_16","alias_value":"SYL2Y2V5RLB2Y2MI","created_at":"2026-05-18T12:26:13Z"},{"alias_kind":"pith_short_8","alias_value":"SYL2Y2V5","created_at":"2026-05-18T12:26:13Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2010:SYL2Y2V5RLB2Y2MIYOQEUBCCJ2","target":"record","payload":{"canonical_record":{"source":{"id":"1003.4473","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2010-03-23T17:23:46Z","cross_cats_sorted":[],"title_canon_sha256":"c9b292d3eda6f01f05169a34d9960dd60ec6ac46f6671d12a48adb0f01995fdf","abstract_canon_sha256":"c6cac3e778455be32b18966e73b0b5aa26fa8459c59d5fdae06ccee5fa257596"},"schema_version":"1.0"},"canonical_sha256":"9617ac6abd8ac3ac6988c3a04a04424e91e850cb2839c726dd4341df59578e2e","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:08:23.990841Z","signature_b64":"gibJlsKFsAyX7XKBuK6ctPTMXhmUuPDggZ6p54iEXO4A9KXK1R8cJVyT8eT618tYcy2clZwQTzH2HgONZ3ELAg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"9617ac6abd8ac3ac6988c3a04a04424e91e850cb2839c726dd4341df59578e2e","last_reissued_at":"2026-05-18T02:08:23.990246Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:08:23.990246Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1003.4473","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":"2026-05-18T02:08:23Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"LSLjOZlB01h7iwODx3ltl/M5a7u1d+2Q01dewbbytgWPt9MKxdWN4/zNTD/Psue2J9Ymx7CmOT1UB/9USMniCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-02T10:55:17.475552Z"},"content_sha256":"e25b5f51051b1f1c16d3f997851e831fe1086cab10ba01a47fd97e3bc1e5f983","schema_version":"1.0","event_id":"sha256:e25b5f51051b1f1c16d3f997851e831fe1086cab10ba01a47fd97e3bc1e5f983"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2010:SYL2Y2V5RLB2Y2MIYOQEUBCCJ2","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Ab initio study of beryllium-decorated fullerenes for hydrogen storage","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.mtrl-sci","authors_text":"Bing Huang, Hoonkyung Lee, Jisoon Ihm, Wenhui Duan","submitted_at":"2010-03-23T17:23:46Z","abstract_excerpt":"We have found that a beryllium (Be) atom on nanostructured materials with H2 molecules generates a Kubas-like dihydrogen complex [H. Lee et al. arXiv:1002.2247v1 (2010)]. Here, we investigate the feasibility of Be-decorated fullerenes for hydrogen storage using ab initio calculations. We find that the aggregation of Be atoms on pristine fullerenes is energetically preferred, resulting in the dissociation of the dihydrogen. In contrast, for boron (B)-doped fullerenes, Be atoms prefer to be individually attached to B sites of the fullerenes, and a maximum of one H2 molecule binds to each Be atom"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1003.4473","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":"2026-05-18T02:08:23Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"/Bz0DBHySJSc72Z+qkAmyBonPKRX38dJenUS9v1I8EJEIVj/1H8MmA3U6f1oH5rKT9G0Kw5+uXYse4s18GukAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-02T10:55:17.475902Z"},"content_sha256":"be6caf338e858a345a480568f983e4807cd12eac1162ecd3fb56518361488fcb","schema_version":"1.0","event_id":"sha256:be6caf338e858a345a480568f983e4807cd12eac1162ecd3fb56518361488fcb"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/SYL2Y2V5RLB2Y2MIYOQEUBCCJ2/bundle.json","state_url":"https://pith.science/pith/SYL2Y2V5RLB2Y2MIYOQEUBCCJ2/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/SYL2Y2V5RLB2Y2MIYOQEUBCCJ2/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":"2026-06-02T10:55:17Z","links":{"resolver":"https://pith.science/pith/SYL2Y2V5RLB2Y2MIYOQEUBCCJ2","bundle":"https://pith.science/pith/SYL2Y2V5RLB2Y2MIYOQEUBCCJ2/bundle.json","state":"https://pith.science/pith/SYL2Y2V5RLB2Y2MIYOQEUBCCJ2/state.json","well_known_bundle":"https://pith.science/.well-known/pith/SYL2Y2V5RLB2Y2MIYOQEUBCCJ2/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2010:SYL2Y2V5RLB2Y2MIYOQEUBCCJ2","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":"c6cac3e778455be32b18966e73b0b5aa26fa8459c59d5fdae06ccee5fa257596","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2010-03-23T17:23:46Z","title_canon_sha256":"c9b292d3eda6f01f05169a34d9960dd60ec6ac46f6671d12a48adb0f01995fdf"},"schema_version":"1.0","source":{"id":"1003.4473","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1003.4473","created_at":"2026-05-18T02:08:23Z"},{"alias_kind":"arxiv_version","alias_value":"1003.4473v1","created_at":"2026-05-18T02:08:23Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1003.4473","created_at":"2026-05-18T02:08:23Z"},{"alias_kind":"pith_short_12","alias_value":"SYL2Y2V5RLB2","created_at":"2026-05-18T12:26:13Z"},{"alias_kind":"pith_short_16","alias_value":"SYL2Y2V5RLB2Y2MI","created_at":"2026-05-18T12:26:13Z"},{"alias_kind":"pith_short_8","alias_value":"SYL2Y2V5","created_at":"2026-05-18T12:26:13Z"}],"graph_snapshots":[{"event_id":"sha256:be6caf338e858a345a480568f983e4807cd12eac1162ecd3fb56518361488fcb","target":"graph","created_at":"2026-05-18T02:08:23Z","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":"We have found that a beryllium (Be) atom on nanostructured materials with H2 molecules generates a Kubas-like dihydrogen complex [H. Lee et al. arXiv:1002.2247v1 (2010)]. Here, we investigate the feasibility of Be-decorated fullerenes for hydrogen storage using ab initio calculations. We find that the aggregation of Be atoms on pristine fullerenes is energetically preferred, resulting in the dissociation of the dihydrogen. In contrast, for boron (B)-doped fullerenes, Be atoms prefer to be individually attached to B sites of the fullerenes, and a maximum of one H2 molecule binds to each Be atom","authors_text":"Bing Huang, Hoonkyung Lee, Jisoon Ihm, Wenhui Duan","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2010-03-23T17:23:46Z","title":"Ab initio study of beryllium-decorated fullerenes for hydrogen storage"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1003.4473","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:e25b5f51051b1f1c16d3f997851e831fe1086cab10ba01a47fd97e3bc1e5f983","target":"record","created_at":"2026-05-18T02:08:23Z","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":"c6cac3e778455be32b18966e73b0b5aa26fa8459c59d5fdae06ccee5fa257596","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2010-03-23T17:23:46Z","title_canon_sha256":"c9b292d3eda6f01f05169a34d9960dd60ec6ac46f6671d12a48adb0f01995fdf"},"schema_version":"1.0","source":{"id":"1003.4473","kind":"arxiv","version":1}},"canonical_sha256":"9617ac6abd8ac3ac6988c3a04a04424e91e850cb2839c726dd4341df59578e2e","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"9617ac6abd8ac3ac6988c3a04a04424e91e850cb2839c726dd4341df59578e2e","first_computed_at":"2026-05-18T02:08:23.990246Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:08:23.990246Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"gibJlsKFsAyX7XKBuK6ctPTMXhmUuPDggZ6p54iEXO4A9KXK1R8cJVyT8eT618tYcy2clZwQTzH2HgONZ3ELAg==","signature_status":"signed_v1","signed_at":"2026-05-18T02:08:23.990841Z","signed_message":"canonical_sha256_bytes"},"source_id":"1003.4473","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:e25b5f51051b1f1c16d3f997851e831fe1086cab10ba01a47fd97e3bc1e5f983","sha256:be6caf338e858a345a480568f983e4807cd12eac1162ecd3fb56518361488fcb"],"state_sha256":"d07bd834937109fc53dbc11962cb2f3f036228b86350826a388621295add6688"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"+80lF+geZ3bh56Dm1DqH4gd9mHs1wXyl3TAQI6sTDbSFJ/gsogR50sfxz3sZWWpy1O7B78yLXFt0Qe7jTvsFBQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-02T10:55:17.477877Z","bundle_sha256":"4af1f228d025346ad2579463e4ab16319072da76f7918c495b76a7e299ff8465"}}