{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2016:GZBKMMUYWIVRQLK7X72KQF7PPK","short_pith_number":"pith:GZBKMMUY","canonical_record":{"source":{"id":"1609.00648","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2016-09-02T15:42:51Z","cross_cats_sorted":[],"title_canon_sha256":"a18f243ab2fccd2e1b929c94a327877438e4d215f6a1a67b212e64af76ae95af","abstract_canon_sha256":"a8ab625a49ecdce76362979d95f2f247ded9d301c9c511a387a07bf7b30a3694"},"schema_version":"1.0"},"canonical_sha256":"3642a63298b22b182d5fbff4a817ef7ab0dd29566d48d19217a0e5af51d7fb6c","source":{"kind":"arxiv","id":"1609.00648","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1609.00648","created_at":"2026-05-18T01:06:23Z"},{"alias_kind":"arxiv_version","alias_value":"1609.00648v1","created_at":"2026-05-18T01:06:23Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1609.00648","created_at":"2026-05-18T01:06:23Z"},{"alias_kind":"pith_short_12","alias_value":"GZBKMMUYWIVR","created_at":"2026-05-18T12:30:19Z"},{"alias_kind":"pith_short_16","alias_value":"GZBKMMUYWIVRQLK7","created_at":"2026-05-18T12:30:19Z"},{"alias_kind":"pith_short_8","alias_value":"GZBKMMUY","created_at":"2026-05-18T12:30:19Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2016:GZBKMMUYWIVRQLK7X72KQF7PPK","target":"record","payload":{"canonical_record":{"source":{"id":"1609.00648","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2016-09-02T15:42:51Z","cross_cats_sorted":[],"title_canon_sha256":"a18f243ab2fccd2e1b929c94a327877438e4d215f6a1a67b212e64af76ae95af","abstract_canon_sha256":"a8ab625a49ecdce76362979d95f2f247ded9d301c9c511a387a07bf7b30a3694"},"schema_version":"1.0"},"canonical_sha256":"3642a63298b22b182d5fbff4a817ef7ab0dd29566d48d19217a0e5af51d7fb6c","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:06:23.514884Z","signature_b64":"IcEPf7tlvsOKuNTwdeQjsaAsQLP80orjYIdk3snbePi/PrCpKWQ+MnzGk/JgCVgnaEVnCygbdLSSH9jpIsrFBg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"3642a63298b22b182d5fbff4a817ef7ab0dd29566d48d19217a0e5af51d7fb6c","last_reissued_at":"2026-05-18T01:06:23.514447Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:06:23.514447Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1609.00648","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":"2026-05-18T01:06:23Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Es+HbPJg1Cg0Z6H1xc+iHS0ZqrIgBq035PyLKV/qe1zeZJrMfvBu7kk7tT77dtZezZ+FmPbIRT1z3gKIlPh5BA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-04T22:21:30.231953Z"},"content_sha256":"3d309351aa6a5cc323b4b7e659931bd365af2dca2118ae08e9bb64c66c300930","schema_version":"1.0","event_id":"sha256:3d309351aa6a5cc323b4b7e659931bd365af2dca2118ae08e9bb64c66c300930"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2016:GZBKMMUYWIVRQLK7X72KQF7PPK","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Electron-phonon interaction during optically induced ultrafast magnetization dynamics of Au/GdFeCo bilayers","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.mtrl-sci","authors_text":"Charles-Henri Lambert, Jeffrey Bokor, Jon Gorchon, Richard B Wilson, Sayeef Salahuddin, Yang Yang","submitted_at":"2016-09-02T15:42:51Z","abstract_excerpt":"The temperature evolution of GdFeCo electrons following optical heating plays a key role in all optical switching of GdFeCo and is primarily governed by the strength of coupling between electrons and phonons. Typically, the strength of electron-phonon coupling in a metal is deduced by monitoring changes in reflectance following optical heating and then analyzing the transient reflectance with a simple two-temperature thermal model. In a magnetic metal, the change in reflectance cannot be assumed to depend only the electron and phonon temperatures because a metal's reflectance also depends on t"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1609.00648","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":"2026-05-18T01:06:23Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"vEoLRQ87vDULv3xY4ZoO7ISsdu7fa9aLrqP0jk/00/emd59og3t4zGugHkw4hsCBZTOd5wv9kEqGcUWmgiu3DA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-04T22:21:30.232547Z"},"content_sha256":"a6a82670cb05ad3f0f4c6a840e6ab48844a966e9108b5af8fdfcd58fce267c76","schema_version":"1.0","event_id":"sha256:a6a82670cb05ad3f0f4c6a840e6ab48844a966e9108b5af8fdfcd58fce267c76"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/GZBKMMUYWIVRQLK7X72KQF7PPK/bundle.json","state_url":"https://pith.science/pith/GZBKMMUYWIVRQLK7X72KQF7PPK/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/GZBKMMUYWIVRQLK7X72KQF7PPK/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":"2026-06-04T22:21:30Z","links":{"resolver":"https://pith.science/pith/GZBKMMUYWIVRQLK7X72KQF7PPK","bundle":"https://pith.science/pith/GZBKMMUYWIVRQLK7X72KQF7PPK/bundle.json","state":"https://pith.science/pith/GZBKMMUYWIVRQLK7X72KQF7PPK/state.json","well_known_bundle":"https://pith.science/.well-known/pith/GZBKMMUYWIVRQLK7X72KQF7PPK/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:GZBKMMUYWIVRQLK7X72KQF7PPK","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":"a8ab625a49ecdce76362979d95f2f247ded9d301c9c511a387a07bf7b30a3694","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2016-09-02T15:42:51Z","title_canon_sha256":"a18f243ab2fccd2e1b929c94a327877438e4d215f6a1a67b212e64af76ae95af"},"schema_version":"1.0","source":{"id":"1609.00648","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1609.00648","created_at":"2026-05-18T01:06:23Z"},{"alias_kind":"arxiv_version","alias_value":"1609.00648v1","created_at":"2026-05-18T01:06:23Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1609.00648","created_at":"2026-05-18T01:06:23Z"},{"alias_kind":"pith_short_12","alias_value":"GZBKMMUYWIVR","created_at":"2026-05-18T12:30:19Z"},{"alias_kind":"pith_short_16","alias_value":"GZBKMMUYWIVRQLK7","created_at":"2026-05-18T12:30:19Z"},{"alias_kind":"pith_short_8","alias_value":"GZBKMMUY","created_at":"2026-05-18T12:30:19Z"}],"graph_snapshots":[{"event_id":"sha256:a6a82670cb05ad3f0f4c6a840e6ab48844a966e9108b5af8fdfcd58fce267c76","target":"graph","created_at":"2026-05-18T01:06:23Z","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":"The temperature evolution of GdFeCo electrons following optical heating plays a key role in all optical switching of GdFeCo and is primarily governed by the strength of coupling between electrons and phonons. Typically, the strength of electron-phonon coupling in a metal is deduced by monitoring changes in reflectance following optical heating and then analyzing the transient reflectance with a simple two-temperature thermal model. In a magnetic metal, the change in reflectance cannot be assumed to depend only the electron and phonon temperatures because a metal's reflectance also depends on t","authors_text":"Charles-Henri Lambert, Jeffrey Bokor, Jon Gorchon, Richard B Wilson, Sayeef Salahuddin, Yang Yang","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2016-09-02T15:42:51Z","title":"Electron-phonon interaction during optically induced ultrafast magnetization dynamics of Au/GdFeCo bilayers"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1609.00648","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":"sha256:3d309351aa6a5cc323b4b7e659931bd365af2dca2118ae08e9bb64c66c300930","target":"record","created_at":"2026-05-18T01:06:23Z","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":"a8ab625a49ecdce76362979d95f2f247ded9d301c9c511a387a07bf7b30a3694","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2016-09-02T15:42:51Z","title_canon_sha256":"a18f243ab2fccd2e1b929c94a327877438e4d215f6a1a67b212e64af76ae95af"},"schema_version":"1.0","source":{"id":"1609.00648","kind":"arxiv","version":1}},"canonical_sha256":"3642a63298b22b182d5fbff4a817ef7ab0dd29566d48d19217a0e5af51d7fb6c","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"3642a63298b22b182d5fbff4a817ef7ab0dd29566d48d19217a0e5af51d7fb6c","first_computed_at":"2026-05-18T01:06:23.514447Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:06:23.514447Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"IcEPf7tlvsOKuNTwdeQjsaAsQLP80orjYIdk3snbePi/PrCpKWQ+MnzGk/JgCVgnaEVnCygbdLSSH9jpIsrFBg==","signature_status":"signed_v1","signed_at":"2026-05-18T01:06:23.514884Z","signed_message":"canonical_sha256_bytes"},"source_id":"1609.00648","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:3d309351aa6a5cc323b4b7e659931bd365af2dca2118ae08e9bb64c66c300930","sha256:a6a82670cb05ad3f0f4c6a840e6ab48844a966e9108b5af8fdfcd58fce267c76"],"state_sha256":"bc2db52d1e4687c292950ef295bc8fa6d41b31188ce7e48cbc4047a60050e70c"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Wk5mD2tBnHDUFNAcmt/qHMxRDHhLJEmUAEUqwJLC+lvUvALgWyj1OeQfPLeYbHuLAbJavDVt6ukR26zCzdbvBg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-04T22:21:30.235694Z","bundle_sha256":"896011fa4cc40cf20533af21b268902005da77f074de98a80c9fcb47afc1ab6a"}}