{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2010:HY27CDWA5JZAKZL4VRTXLFH6OI","short_pith_number":"pith:HY27CDWA","canonical_record":{"source":{"id":"1012.1185","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2010-12-06T14:41:47Z","cross_cats_sorted":["cond-mat.other"],"title_canon_sha256":"d291e2dbead35799981c12d8648108ccc56aa95ce1e0b8f8ae481c583ba1d06a","abstract_canon_sha256":"355e81611ae90a2a0d4a1293f3d83cf80b01c88e29aae334617a24eee969142e"},"schema_version":"1.0"},"canonical_sha256":"3e35f10ec0ea7205657cac677594fe7204bf0004afabb6bebcb34455c1147662","source":{"kind":"arxiv","id":"1012.1185","version":3},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1012.1185","created_at":"2026-05-18T04:23:12Z"},{"alias_kind":"arxiv_version","alias_value":"1012.1185v3","created_at":"2026-05-18T04:23:12Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1012.1185","created_at":"2026-05-18T04:23:12Z"},{"alias_kind":"pith_short_12","alias_value":"HY27CDWA5JZA","created_at":"2026-05-18T12:26:07Z"},{"alias_kind":"pith_short_16","alias_value":"HY27CDWA5JZAKZL4","created_at":"2026-05-18T12:26:07Z"},{"alias_kind":"pith_short_8","alias_value":"HY27CDWA","created_at":"2026-05-18T12:26:07Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2010:HY27CDWA5JZAKZL4VRTXLFH6OI","target":"record","payload":{"canonical_record":{"source":{"id":"1012.1185","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2010-12-06T14:41:47Z","cross_cats_sorted":["cond-mat.other"],"title_canon_sha256":"d291e2dbead35799981c12d8648108ccc56aa95ce1e0b8f8ae481c583ba1d06a","abstract_canon_sha256":"355e81611ae90a2a0d4a1293f3d83cf80b01c88e29aae334617a24eee969142e"},"schema_version":"1.0"},"canonical_sha256":"3e35f10ec0ea7205657cac677594fe7204bf0004afabb6bebcb34455c1147662","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T04:23:12.982270Z","signature_b64":"5X22pNCkZKB3a3BplIqDCVTtg97PqdhD6xG131BFh/Q5pCMqClg2y8jhGOklUkb+KVGSQeI/G+QS+//jc6IyAA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"3e35f10ec0ea7205657cac677594fe7204bf0004afabb6bebcb34455c1147662","last_reissued_at":"2026-05-18T04:23:12.981677Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T04:23:12.981677Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1012.1185","source_version":3,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T04:23:12Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"00kNuZXJmfjAaJG/JwDJ6PtOX+WzmDkhIF1oxGu4kD8dUsQcZa5G8s+Cvg7F9BpbTC1w8N1XeAjfU8Fn70NyDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-03T11:02:39.402997Z"},"content_sha256":"730bda438851b31d649f4545261bc10f3f653b19466869ac5de6a286e11fed8d","schema_version":"1.0","event_id":"sha256:730bda438851b31d649f4545261bc10f3f653b19466869ac5de6a286e11fed8d"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2010:HY27CDWA5JZAKZL4VRTXLFH6OI","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Carbon chains grown perpendicularly on graphene","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.other"],"primary_cat":"cond-mat.mtrl-sci","authors_text":"C. Ataca, S. Ciraci","submitted_at":"2010-12-06T14:41:47Z","abstract_excerpt":"Based on first-principles calculations we predict a peculiar growth process, where carbon adatoms adsorbed to graphene readily diffuse above room temperature and nucleate segments of linear carbon chains attached to graphene. These chains grow longer on graphene through insertion of carbon atoms one at a time from the bottom end and display a self-assembling behavior. Eventually, two allotropes of carbon, namely graphene and cumulene are combined to exhibit important functionalities. The segments of carbon chains on graphene become chemically active sites to bind foreign atoms or large molecul"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1012.1185","kind":"arxiv","version":3},"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":"2026-05-18T04:23:12Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"WbWEapGpH7GnrhNVTunPU1A0fOEEfuJ0h7T5RGxeUwI8p/GYqv1xDXjFi0uTBv7ZqQkv+Kd5JNqplTCmIQB3Ag==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-03T11:02:39.403352Z"},"content_sha256":"a3d06ce96a11593f16164e67c34ef052af5cb48df05aba84fdd849a8ae00e6a1","schema_version":"1.0","event_id":"sha256:a3d06ce96a11593f16164e67c34ef052af5cb48df05aba84fdd849a8ae00e6a1"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/HY27CDWA5JZAKZL4VRTXLFH6OI/bundle.json","state_url":"https://pith.science/pith/HY27CDWA5JZAKZL4VRTXLFH6OI/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/HY27CDWA5JZAKZL4VRTXLFH6OI/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":"2026-06-03T11:02:39Z","links":{"resolver":"https://pith.science/pith/HY27CDWA5JZAKZL4VRTXLFH6OI","bundle":"https://pith.science/pith/HY27CDWA5JZAKZL4VRTXLFH6OI/bundle.json","state":"https://pith.science/pith/HY27CDWA5JZAKZL4VRTXLFH6OI/state.json","well_known_bundle":"https://pith.science/.well-known/pith/HY27CDWA5JZAKZL4VRTXLFH6OI/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2010:HY27CDWA5JZAKZL4VRTXLFH6OI","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":"355e81611ae90a2a0d4a1293f3d83cf80b01c88e29aae334617a24eee969142e","cross_cats_sorted":["cond-mat.other"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2010-12-06T14:41:47Z","title_canon_sha256":"d291e2dbead35799981c12d8648108ccc56aa95ce1e0b8f8ae481c583ba1d06a"},"schema_version":"1.0","source":{"id":"1012.1185","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1012.1185","created_at":"2026-05-18T04:23:12Z"},{"alias_kind":"arxiv_version","alias_value":"1012.1185v3","created_at":"2026-05-18T04:23:12Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1012.1185","created_at":"2026-05-18T04:23:12Z"},{"alias_kind":"pith_short_12","alias_value":"HY27CDWA5JZA","created_at":"2026-05-18T12:26:07Z"},{"alias_kind":"pith_short_16","alias_value":"HY27CDWA5JZAKZL4","created_at":"2026-05-18T12:26:07Z"},{"alias_kind":"pith_short_8","alias_value":"HY27CDWA","created_at":"2026-05-18T12:26:07Z"}],"graph_snapshots":[{"event_id":"sha256:a3d06ce96a11593f16164e67c34ef052af5cb48df05aba84fdd849a8ae00e6a1","target":"graph","created_at":"2026-05-18T04:23:12Z","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":"Based on first-principles calculations we predict a peculiar growth process, where carbon adatoms adsorbed to graphene readily diffuse above room temperature and nucleate segments of linear carbon chains attached to graphene. These chains grow longer on graphene through insertion of carbon atoms one at a time from the bottom end and display a self-assembling behavior. Eventually, two allotropes of carbon, namely graphene and cumulene are combined to exhibit important functionalities. The segments of carbon chains on graphene become chemically active sites to bind foreign atoms or large molecul","authors_text":"C. Ataca, S. Ciraci","cross_cats":["cond-mat.other"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2010-12-06T14:41:47Z","title":"Carbon chains grown perpendicularly on graphene"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1012.1185","kind":"arxiv","version":3},"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":"sha256:730bda438851b31d649f4545261bc10f3f653b19466869ac5de6a286e11fed8d","target":"record","created_at":"2026-05-18T04:23:12Z","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":"355e81611ae90a2a0d4a1293f3d83cf80b01c88e29aae334617a24eee969142e","cross_cats_sorted":["cond-mat.other"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2010-12-06T14:41:47Z","title_canon_sha256":"d291e2dbead35799981c12d8648108ccc56aa95ce1e0b8f8ae481c583ba1d06a"},"schema_version":"1.0","source":{"id":"1012.1185","kind":"arxiv","version":3}},"canonical_sha256":"3e35f10ec0ea7205657cac677594fe7204bf0004afabb6bebcb34455c1147662","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"3e35f10ec0ea7205657cac677594fe7204bf0004afabb6bebcb34455c1147662","first_computed_at":"2026-05-18T04:23:12.981677Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T04:23:12.981677Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"5X22pNCkZKB3a3BplIqDCVTtg97PqdhD6xG131BFh/Q5pCMqClg2y8jhGOklUkb+KVGSQeI/G+QS+//jc6IyAA==","signature_status":"signed_v1","signed_at":"2026-05-18T04:23:12.982270Z","signed_message":"canonical_sha256_bytes"},"source_id":"1012.1185","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:730bda438851b31d649f4545261bc10f3f653b19466869ac5de6a286e11fed8d","sha256:a3d06ce96a11593f16164e67c34ef052af5cb48df05aba84fdd849a8ae00e6a1"],"state_sha256":"1a38249a25685faea7495696c1ce30574027a4d3779f01124b67ebc1ea6cf708"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"spmFtRT69IjdbPAfyiGMQ6fO6422vtu6BmrT9z6wfjN+XzPs0HA4OHTacwTEiLGACCu05hN+4vfdydOrDsRfDg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-03T11:02:39.405189Z","bundle_sha256":"eca9d56e3883fb0eee4ae2807e85f750a8cad64d1113c8a86fe71e7cac7746e1"}}