{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2020:3TMNXF5KP66XISV2MBZSMHAXGY","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":"2c2c4ebab6cd5ea10133a13bd49e5485add84bf076addfdb90264ca342740afb","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.app-ph","submitted_at":"2020-04-30T06:19:18Z","title_canon_sha256":"610f46a9d9633d25c8f7dfdb3362fc51cbb41a7d9cedacbbfdb2524863f5c607"},"schema_version":"1.0","source":{"id":"2004.14598","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2004.14598","created_at":"2026-07-05T02:57:49Z"},{"alias_kind":"arxiv_version","alias_value":"2004.14598v2","created_at":"2026-07-05T02:57:49Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2004.14598","created_at":"2026-07-05T02:57:49Z"},{"alias_kind":"pith_short_12","alias_value":"3TMNXF5KP66X","created_at":"2026-07-05T02:57:49Z"},{"alias_kind":"pith_short_16","alias_value":"3TMNXF5KP66XISV2","created_at":"2026-07-05T02:57:49Z"},{"alias_kind":"pith_short_8","alias_value":"3TMNXF5K","created_at":"2026-07-05T02:57:49Z"}],"graph_snapshots":[{"event_id":"sha256:69d7017422dede1faf8972dcc18ff73ff06e72adfad307dcb14eab0938aece74","target":"graph","created_at":"2026-07-05T02:57:49Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/2004.14598/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"The pyriform silk of the attachment disc of a spider was studied using infrared-visible vibrational sum frequency generation (SFG) spectroscopy. The spider can attach dragline and radial lines to many kinds of substrates in nature (concrete, alloy, metal, glass, plant branches, leaves, etc.) with the attachment disc. The adhesion can bear the spider's own weight, and resist the wind on its orb web. From our SFG spectroscopy study, the NH group of arginine side chain and/or NH$_{2}$ group of arginine and glutamine side chain in the amino acid sequence of the attachment silk proteins are suggest","authors_text":"Goro Mizutani, Harvey N. Rutt, Khuat Thi Thu Hien, Lin Liang, Yanrong Li, Yue Zhao","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.app-ph","submitted_at":"2020-04-30T06:19:18Z","title":"Sum frequency generation spectroscopy of the attachment disc of a spider"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2004.14598","kind":"arxiv","version":2},"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:d66d5cd3c28c1ad03a6a0817b59b871ef8507c0f591d31038e7a4167c5cef702","target":"record","created_at":"2026-07-05T02:57:49Z","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":"2c2c4ebab6cd5ea10133a13bd49e5485add84bf076addfdb90264ca342740afb","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.app-ph","submitted_at":"2020-04-30T06:19:18Z","title_canon_sha256":"610f46a9d9633d25c8f7dfdb3362fc51cbb41a7d9cedacbbfdb2524863f5c607"},"schema_version":"1.0","source":{"id":"2004.14598","kind":"arxiv","version":2}},"canonical_sha256":"dcd8db97aa7fbd744aba6073261c17363e636b4219b51d24beedd77aa45b1489","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"dcd8db97aa7fbd744aba6073261c17363e636b4219b51d24beedd77aa45b1489","first_computed_at":"2026-07-05T02:57:49.551165Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T02:57:49.551165Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"raq4mLxO8vHJdUmMdAV7gsh9Xvqzh0sVqEGZBqBfT7yv0DKkIahGHOB2mmvqwrMhoMtNVkvcTW+35fe247nuDQ==","signature_status":"signed_v1","signed_at":"2026-07-05T02:57:49.551660Z","signed_message":"canonical_sha256_bytes"},"source_id":"2004.14598","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:d66d5cd3c28c1ad03a6a0817b59b871ef8507c0f591d31038e7a4167c5cef702","sha256:69d7017422dede1faf8972dcc18ff73ff06e72adfad307dcb14eab0938aece74"],"state_sha256":"0370d07bd1692609c6c9e05279aa0181890df56b433940ec405ff9e922824afa"}