{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2009:QRK3OJANDV2O4HMXBXHBU2QNIE","short_pith_number":"pith:QRK3OJAN","canonical_record":{"source":{"id":"0909.2273","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2009-09-11T21:03:43Z","cross_cats_sorted":["cond-mat.stat-mech"],"title_canon_sha256":"4185dc60b1530b89884c9029fc85bdde3ef09327a069135c30a9f6e9cf4e936f","abstract_canon_sha256":"ae58cfb1d8b10d29796cd3276c65bdb3e74c7e3266d2352b5e3fe466f9bab7d6"},"schema_version":"1.0"},"canonical_sha256":"8455b7240d1d74ee1d970dce1a6a0d4129e2a3eab352f0836f3f33b730cb4ede","source":{"kind":"arxiv","id":"0909.2273","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0909.2273","created_at":"2026-05-18T02:11:48Z"},{"alias_kind":"arxiv_version","alias_value":"0909.2273v1","created_at":"2026-05-18T02:11:48Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0909.2273","created_at":"2026-05-18T02:11:48Z"},{"alias_kind":"pith_short_12","alias_value":"QRK3OJANDV2O","created_at":"2026-05-18T12:26:01Z"},{"alias_kind":"pith_short_16","alias_value":"QRK3OJANDV2O4HMX","created_at":"2026-05-18T12:26:01Z"},{"alias_kind":"pith_short_8","alias_value":"QRK3OJAN","created_at":"2026-05-18T12:26:01Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2009:QRK3OJANDV2O4HMXBXHBU2QNIE","target":"record","payload":{"canonical_record":{"source":{"id":"0909.2273","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2009-09-11T21:03:43Z","cross_cats_sorted":["cond-mat.stat-mech"],"title_canon_sha256":"4185dc60b1530b89884c9029fc85bdde3ef09327a069135c30a9f6e9cf4e936f","abstract_canon_sha256":"ae58cfb1d8b10d29796cd3276c65bdb3e74c7e3266d2352b5e3fe466f9bab7d6"},"schema_version":"1.0"},"canonical_sha256":"8455b7240d1d74ee1d970dce1a6a0d4129e2a3eab352f0836f3f33b730cb4ede","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:11:48.698456Z","signature_b64":"t7awUrQIMvUpV5IrKdX/kHjvsruaazSx/iUAcHkoEUTh1JVqlgOyLvlY+x2r/s+0dcoWxXb88QAhKbK3wZ0xAQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"8455b7240d1d74ee1d970dce1a6a0d4129e2a3eab352f0836f3f33b730cb4ede","last_reissued_at":"2026-05-18T02:11:48.697663Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:11:48.697663Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"0909.2273","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":"2026-05-18T02:11:48Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"C/fhSy2ex7qRvzO0OCbOrkGG/i3iTBcragsmlqjXPwQ6JG1gfjLgz/oukR6rdYznObr5pQNjOi0l+yXKmKZ+CA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-29T15:10:47.932526Z"},"content_sha256":"9a0b1ebfce263d34dddd9873d59cea0e7da3c115426d987c67439127d3f78a48","schema_version":"1.0","event_id":"sha256:9a0b1ebfce263d34dddd9873d59cea0e7da3c115426d987c67439127d3f78a48"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2009:QRK3OJANDV2O4HMXBXHBU2QNIE","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Surface X-ray Speckles: Coherent Surface Diffraction from Au (0 0 1)","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.stat-mech"],"primary_cat":"cond-mat.mtrl-sci","authors_text":"A. Sandy, D. Hennessy, H. You, K.C. Chang, M.S. Pierce, M. Sprung, V. Komanicky","submitted_at":"2009-09-11T21:03:43Z","abstract_excerpt":"We present coherent speckled x-ray diffraction patterns obtained from a monolayer of surface atoms. We measured both the specular anti-Bragg reflection and the off-specular hexagonal reconstruction peak for the Au (0 0 1) surface reconstruction. We observed fluctuations of the speckle patterns even when the integrated intensity appears static. By auto-correlating the speckle patterns, we were able to identify two qualitatively different surface dynamic behaviors of the hex reconstruction depending on the sample temperature."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0909.2273","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":"2026-05-18T02:11:48Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Q4ClVPdT4jSPX31nEWOKe+dFlF6YLIDhMCb69eYGHeU6M2AGm+qJG3I6UiXhCUph3Ww2+ScTpI5lPOIxA3g0Bw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-29T15:10:47.932899Z"},"content_sha256":"1fa229d2c0e29d8813ba7abc18006c85fcb6f550deb728621232c5752fb84451","schema_version":"1.0","event_id":"sha256:1fa229d2c0e29d8813ba7abc18006c85fcb6f550deb728621232c5752fb84451"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/QRK3OJANDV2O4HMXBXHBU2QNIE/bundle.json","state_url":"https://pith.science/pith/QRK3OJANDV2O4HMXBXHBU2QNIE/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/QRK3OJANDV2O4HMXBXHBU2QNIE/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":"2026-05-29T15:10:47Z","links":{"resolver":"https://pith.science/pith/QRK3OJANDV2O4HMXBXHBU2QNIE","bundle":"https://pith.science/pith/QRK3OJANDV2O4HMXBXHBU2QNIE/bundle.json","state":"https://pith.science/pith/QRK3OJANDV2O4HMXBXHBU2QNIE/state.json","well_known_bundle":"https://pith.science/.well-known/pith/QRK3OJANDV2O4HMXBXHBU2QNIE/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2009:QRK3OJANDV2O4HMXBXHBU2QNIE","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":"ae58cfb1d8b10d29796cd3276c65bdb3e74c7e3266d2352b5e3fe466f9bab7d6","cross_cats_sorted":["cond-mat.stat-mech"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2009-09-11T21:03:43Z","title_canon_sha256":"4185dc60b1530b89884c9029fc85bdde3ef09327a069135c30a9f6e9cf4e936f"},"schema_version":"1.0","source":{"id":"0909.2273","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0909.2273","created_at":"2026-05-18T02:11:48Z"},{"alias_kind":"arxiv_version","alias_value":"0909.2273v1","created_at":"2026-05-18T02:11:48Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0909.2273","created_at":"2026-05-18T02:11:48Z"},{"alias_kind":"pith_short_12","alias_value":"QRK3OJANDV2O","created_at":"2026-05-18T12:26:01Z"},{"alias_kind":"pith_short_16","alias_value":"QRK3OJANDV2O4HMX","created_at":"2026-05-18T12:26:01Z"},{"alias_kind":"pith_short_8","alias_value":"QRK3OJAN","created_at":"2026-05-18T12:26:01Z"}],"graph_snapshots":[{"event_id":"sha256:1fa229d2c0e29d8813ba7abc18006c85fcb6f550deb728621232c5752fb84451","target":"graph","created_at":"2026-05-18T02:11:48Z","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 present coherent speckled x-ray diffraction patterns obtained from a monolayer of surface atoms. We measured both the specular anti-Bragg reflection and the off-specular hexagonal reconstruction peak for the Au (0 0 1) surface reconstruction. We observed fluctuations of the speckle patterns even when the integrated intensity appears static. By auto-correlating the speckle patterns, we were able to identify two qualitatively different surface dynamic behaviors of the hex reconstruction depending on the sample temperature.","authors_text":"A. Sandy, D. Hennessy, H. You, K.C. Chang, M.S. Pierce, M. Sprung, V. Komanicky","cross_cats":["cond-mat.stat-mech"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2009-09-11T21:03:43Z","title":"Surface X-ray Speckles: Coherent Surface Diffraction from Au (0 0 1)"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0909.2273","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":"sha256:9a0b1ebfce263d34dddd9873d59cea0e7da3c115426d987c67439127d3f78a48","target":"record","created_at":"2026-05-18T02:11:48Z","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":"ae58cfb1d8b10d29796cd3276c65bdb3e74c7e3266d2352b5e3fe466f9bab7d6","cross_cats_sorted":["cond-mat.stat-mech"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2009-09-11T21:03:43Z","title_canon_sha256":"4185dc60b1530b89884c9029fc85bdde3ef09327a069135c30a9f6e9cf4e936f"},"schema_version":"1.0","source":{"id":"0909.2273","kind":"arxiv","version":1}},"canonical_sha256":"8455b7240d1d74ee1d970dce1a6a0d4129e2a3eab352f0836f3f33b730cb4ede","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"8455b7240d1d74ee1d970dce1a6a0d4129e2a3eab352f0836f3f33b730cb4ede","first_computed_at":"2026-05-18T02:11:48.697663Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:11:48.697663Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"t7awUrQIMvUpV5IrKdX/kHjvsruaazSx/iUAcHkoEUTh1JVqlgOyLvlY+x2r/s+0dcoWxXb88QAhKbK3wZ0xAQ==","signature_status":"signed_v1","signed_at":"2026-05-18T02:11:48.698456Z","signed_message":"canonical_sha256_bytes"},"source_id":"0909.2273","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:9a0b1ebfce263d34dddd9873d59cea0e7da3c115426d987c67439127d3f78a48","sha256:1fa229d2c0e29d8813ba7abc18006c85fcb6f550deb728621232c5752fb84451"],"state_sha256":"ee6a430f6e7acd954514b5fbc213d6d3b33c38b85717f734058b2987e9b91cc3"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"cJ7Bkv5VWz839o0ywNt5T/XPm3DfGhuF7RKFt6yNPyuX+UYKPEluQFtr3oC5rIJsNk93l0q4jGE6IR5ZoM8VCA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-29T15:10:47.935363Z","bundle_sha256":"bebfd04f2ca15293a76276fdcf3a1f9deb86f02da435e88c27086c825e8feccc"}}