{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2012:ZMCCD5KRJ3NFT2SR7HDUZ34KM7","short_pith_number":"pith:ZMCCD5KR","canonical_record":{"source":{"id":"1210.1195","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2012-10-03T19:25:03Z","cross_cats_sorted":["cond-mat.str-el"],"title_canon_sha256":"db647a3e3af592ce70356af16340459d9930da15f3a0412b956bf9b844c22a81","abstract_canon_sha256":"b0bc7c42ca1eab1bebb44a96dc5837ccf37d39e4f9479601f4d432b2fbf1dbc3"},"schema_version":"1.0"},"canonical_sha256":"cb0421f5514eda59ea51f9c74cef8a67d3c2eaeb03c5df278bbe1097ebfff522","source":{"kind":"arxiv","id":"1210.1195","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1210.1195","created_at":"2026-05-18T03:32:44Z"},{"alias_kind":"arxiv_version","alias_value":"1210.1195v1","created_at":"2026-05-18T03:32:44Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1210.1195","created_at":"2026-05-18T03:32:44Z"},{"alias_kind":"pith_short_12","alias_value":"ZMCCD5KRJ3NF","created_at":"2026-05-18T12:27:30Z"},{"alias_kind":"pith_short_16","alias_value":"ZMCCD5KRJ3NFT2SR","created_at":"2026-05-18T12:27:30Z"},{"alias_kind":"pith_short_8","alias_value":"ZMCCD5KR","created_at":"2026-05-18T12:27:30Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2012:ZMCCD5KRJ3NFT2SR7HDUZ34KM7","target":"record","payload":{"canonical_record":{"source":{"id":"1210.1195","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2012-10-03T19:25:03Z","cross_cats_sorted":["cond-mat.str-el"],"title_canon_sha256":"db647a3e3af592ce70356af16340459d9930da15f3a0412b956bf9b844c22a81","abstract_canon_sha256":"b0bc7c42ca1eab1bebb44a96dc5837ccf37d39e4f9479601f4d432b2fbf1dbc3"},"schema_version":"1.0"},"canonical_sha256":"cb0421f5514eda59ea51f9c74cef8a67d3c2eaeb03c5df278bbe1097ebfff522","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:32:44.763643Z","signature_b64":"Q8kg8xgxTwsp6w/GkDU5k5hdeI1nkSjmtrUU0kZDUL5MK43Pnm3PrOCxvHp2Nx4g3h9EBBivsRT/G2+yZgchDQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"cb0421f5514eda59ea51f9c74cef8a67d3c2eaeb03c5df278bbe1097ebfff522","last_reissued_at":"2026-05-18T03:32:44.762865Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:32:44.762865Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1210.1195","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":"2026-05-18T03:32:44Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"/M5K3ae9/jjj2hreB19gnq1fsrJpvIGHzAPngqStaKh0o7MO4KBaRBaRwNUsXdtX+J4wXBYkwfV9JcsjvzXQDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-22T12:48:26.117384Z"},"content_sha256":"2939e9a999157a9d63d274639bbc19dfdc85e615c8685827e1ae08582daaafce","schema_version":"1.0","event_id":"sha256:2939e9a999157a9d63d274639bbc19dfdc85e615c8685827e1ae08582daaafce"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2012:ZMCCD5KRJ3NFT2SR7HDUZ34KM7","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Easy-axis ferromagnetic chain on a metallic surface","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.str-el"],"primary_cat":"cond-mat.mes-hall","authors_text":"Alejandro M. Lobos, Miguel A. Cazalilla","submitted_at":"2012-10-03T19:25:03Z","abstract_excerpt":"The phases and excitation spectrum of an easy-axis ferromagnetic chain of S=1/2 magnetic impurities built on the top of a clean metallic surface are studied. As a function of the (Kondo) coupling to the metallic surface and at low temperatures, the spin chain exhibits a quantum phase transition from an Ising ferromagnetic phase with long-range order to a paramagnetic phase where quantum fluctuations destroy the magnetic order. In the paramagnetic phase, the system consists of a chain of Kondo-singlets where the impurities are completely screened by the metallic host. In the ferromagnetic phase"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1210.1195","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":"2026-05-18T03:32:44Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"6EN6GHlMHLiACkOvA6J8ZFzkGlqij7WZflNqs1841iBkYMTH2+GftjD/6XuQ9PbE45RAHDB+buJ7Gno/+TiZAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-22T12:48:26.117974Z"},"content_sha256":"3c8bed01c4cf49cdee3386a08a762a2501058235ee058ec1b59be4e02aa3c33e","schema_version":"1.0","event_id":"sha256:3c8bed01c4cf49cdee3386a08a762a2501058235ee058ec1b59be4e02aa3c33e"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/ZMCCD5KRJ3NFT2SR7HDUZ34KM7/bundle.json","state_url":"https://pith.science/pith/ZMCCD5KRJ3NFT2SR7HDUZ34KM7/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/ZMCCD5KRJ3NFT2SR7HDUZ34KM7/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":"2026-06-22T12:48:26Z","links":{"resolver":"https://pith.science/pith/ZMCCD5KRJ3NFT2SR7HDUZ34KM7","bundle":"https://pith.science/pith/ZMCCD5KRJ3NFT2SR7HDUZ34KM7/bundle.json","state":"https://pith.science/pith/ZMCCD5KRJ3NFT2SR7HDUZ34KM7/state.json","well_known_bundle":"https://pith.science/.well-known/pith/ZMCCD5KRJ3NFT2SR7HDUZ34KM7/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:ZMCCD5KRJ3NFT2SR7HDUZ34KM7","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":"b0bc7c42ca1eab1bebb44a96dc5837ccf37d39e4f9479601f4d432b2fbf1dbc3","cross_cats_sorted":["cond-mat.str-el"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2012-10-03T19:25:03Z","title_canon_sha256":"db647a3e3af592ce70356af16340459d9930da15f3a0412b956bf9b844c22a81"},"schema_version":"1.0","source":{"id":"1210.1195","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1210.1195","created_at":"2026-05-18T03:32:44Z"},{"alias_kind":"arxiv_version","alias_value":"1210.1195v1","created_at":"2026-05-18T03:32:44Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1210.1195","created_at":"2026-05-18T03:32:44Z"},{"alias_kind":"pith_short_12","alias_value":"ZMCCD5KRJ3NF","created_at":"2026-05-18T12:27:30Z"},{"alias_kind":"pith_short_16","alias_value":"ZMCCD5KRJ3NFT2SR","created_at":"2026-05-18T12:27:30Z"},{"alias_kind":"pith_short_8","alias_value":"ZMCCD5KR","created_at":"2026-05-18T12:27:30Z"}],"graph_snapshots":[{"event_id":"sha256:3c8bed01c4cf49cdee3386a08a762a2501058235ee058ec1b59be4e02aa3c33e","target":"graph","created_at":"2026-05-18T03:32:44Z","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":"The phases and excitation spectrum of an easy-axis ferromagnetic chain of S=1/2 magnetic impurities built on the top of a clean metallic surface are studied. As a function of the (Kondo) coupling to the metallic surface and at low temperatures, the spin chain exhibits a quantum phase transition from an Ising ferromagnetic phase with long-range order to a paramagnetic phase where quantum fluctuations destroy the magnetic order. In the paramagnetic phase, the system consists of a chain of Kondo-singlets where the impurities are completely screened by the metallic host. In the ferromagnetic phase","authors_text":"Alejandro M. Lobos, Miguel A. Cazalilla","cross_cats":["cond-mat.str-el"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2012-10-03T19:25:03Z","title":"Easy-axis ferromagnetic chain on a metallic surface"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1210.1195","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":"sha256:2939e9a999157a9d63d274639bbc19dfdc85e615c8685827e1ae08582daaafce","target":"record","created_at":"2026-05-18T03:32:44Z","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":"b0bc7c42ca1eab1bebb44a96dc5837ccf37d39e4f9479601f4d432b2fbf1dbc3","cross_cats_sorted":["cond-mat.str-el"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2012-10-03T19:25:03Z","title_canon_sha256":"db647a3e3af592ce70356af16340459d9930da15f3a0412b956bf9b844c22a81"},"schema_version":"1.0","source":{"id":"1210.1195","kind":"arxiv","version":1}},"canonical_sha256":"cb0421f5514eda59ea51f9c74cef8a67d3c2eaeb03c5df278bbe1097ebfff522","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"cb0421f5514eda59ea51f9c74cef8a67d3c2eaeb03c5df278bbe1097ebfff522","first_computed_at":"2026-05-18T03:32:44.762865Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:32:44.762865Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Q8kg8xgxTwsp6w/GkDU5k5hdeI1nkSjmtrUU0kZDUL5MK43Pnm3PrOCxvHp2Nx4g3h9EBBivsRT/G2+yZgchDQ==","signature_status":"signed_v1","signed_at":"2026-05-18T03:32:44.763643Z","signed_message":"canonical_sha256_bytes"},"source_id":"1210.1195","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:2939e9a999157a9d63d274639bbc19dfdc85e615c8685827e1ae08582daaafce","sha256:3c8bed01c4cf49cdee3386a08a762a2501058235ee058ec1b59be4e02aa3c33e"],"state_sha256":"6ec55bac6de8deda34c3b9db63c24ba89d769569f3da6b69a5e809e810cd0a8f"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"KL4JPrDRTDMG+nCC++/BBEKwmbWgWFVsMYgFCN8se9Poxu8EpzfWh+G8lJiItInp/CovG8LChQ4qzNZzIygIDA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-22T12:48:26.120579Z","bundle_sha256":"74086bf0c6957f9c91edffeebe3a309a6e3b44d30a018a272ecc90ac8b7e0c25"}}