{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2019:NLRJOTQL2CFLT7MZQTCMEL4ZGJ","short_pith_number":"pith:NLRJOTQL","canonical_record":{"source":{"id":"1907.03500","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cond-mat.soft","submitted_at":"2019-07-08T10:52:17Z","cross_cats_sorted":["cond-mat.mtrl-sci"],"title_canon_sha256":"716c76d9895f456675b4343d84dbfe49f9d32a41ffd16aad9c217d2c5f303441","abstract_canon_sha256":"414393d826582d7321c3ddacddc4c2505aa30f9110e02dbf06c74a9a15747e17"},"schema_version":"1.0"},"canonical_sha256":"6ae2974e0bd08ab9fd9984c4c22f99326897ac7edf79441860a20cce53956cb0","source":{"kind":"arxiv","id":"1907.03500","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1907.03500","created_at":"2026-05-17T23:41:14Z"},{"alias_kind":"arxiv_version","alias_value":"1907.03500v1","created_at":"2026-05-17T23:41:14Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1907.03500","created_at":"2026-05-17T23:41:14Z"},{"alias_kind":"pith_short_12","alias_value":"NLRJOTQL2CFL","created_at":"2026-05-18T12:33:24Z"},{"alias_kind":"pith_short_16","alias_value":"NLRJOTQL2CFLT7MZ","created_at":"2026-05-18T12:33:24Z"},{"alias_kind":"pith_short_8","alias_value":"NLRJOTQL","created_at":"2026-05-18T12:33:24Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2019:NLRJOTQL2CFLT7MZQTCMEL4ZGJ","target":"record","payload":{"canonical_record":{"source":{"id":"1907.03500","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cond-mat.soft","submitted_at":"2019-07-08T10:52:17Z","cross_cats_sorted":["cond-mat.mtrl-sci"],"title_canon_sha256":"716c76d9895f456675b4343d84dbfe49f9d32a41ffd16aad9c217d2c5f303441","abstract_canon_sha256":"414393d826582d7321c3ddacddc4c2505aa30f9110e02dbf06c74a9a15747e17"},"schema_version":"1.0"},"canonical_sha256":"6ae2974e0bd08ab9fd9984c4c22f99326897ac7edf79441860a20cce53956cb0","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:41:14.459633Z","signature_b64":"nLuL2BU1w33V+IvJXte8ff3IaptAb/nhmV/RaGrKQBMuw1odQ9VBsVzLARtqowru1M4I/WSCgD+z7wNgYSUvCQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"6ae2974e0bd08ab9fd9984c4c22f99326897ac7edf79441860a20cce53956cb0","last_reissued_at":"2026-05-17T23:41:14.459250Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:41:14.459250Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1907.03500","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":"2026-05-17T23:41:14Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"OgDW1ZJAFKClzXIyShkoo8DBA3bT3OhDxn/0NXvxbxE5VrY+e6rWVn68y/IzuptsHf+pZ8Nv7RdzppEO/Bm6Bw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T16:11:58.799436Z"},"content_sha256":"9a656a39783e8e2134f843abce16561201cd7724c117bbd213b72b2fd1e11c9d","schema_version":"1.0","event_id":"sha256:9a656a39783e8e2134f843abce16561201cd7724c117bbd213b72b2fd1e11c9d"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2019:NLRJOTQL2CFLT7MZQTCMEL4ZGJ","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Deformation and failure maps for PMMA in uniaxial tension","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["cond-mat.mtrl-sci"],"primary_cat":"cond-mat.soft","authors_text":"Frederik Van Loock, Norman A. Fleck","submitted_at":"2019-07-08T10:52:17Z","abstract_excerpt":"Uniaxial tensile tests are performed on a polymethyl methacrylate (PMMA) grade over a range of temperatures near the glass transition and over two decades of strain rate. Deformation maps are constructed for Young's modulus, flow strength, and failure strain as a function of temperature for selected strain rates. The glassy, glass transition and rubbery regimes are identified, and constitutive relations are calibrated for the modulus and flow strength within each regime."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1907.03500","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":"2026-05-17T23:41:14Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"8R8C4gEoF/cJNWqa0dxmOOPWiOOcYTvwaawBdLFdrbQCqB3gcjRghhHsMZ4HwnNAflEZl1wkpH0imCG09sSqBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T16:11:58.800148Z"},"content_sha256":"fa19b2a6a2a70b5058d2afd6278c8412a63caffeca071b60464eed2a217f2028","schema_version":"1.0","event_id":"sha256:fa19b2a6a2a70b5058d2afd6278c8412a63caffeca071b60464eed2a217f2028"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/NLRJOTQL2CFLT7MZQTCMEL4ZGJ/bundle.json","state_url":"https://pith.science/pith/NLRJOTQL2CFLT7MZQTCMEL4ZGJ/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/NLRJOTQL2CFLT7MZQTCMEL4ZGJ/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":"2026-05-25T16:11:58Z","links":{"resolver":"https://pith.science/pith/NLRJOTQL2CFLT7MZQTCMEL4ZGJ","bundle":"https://pith.science/pith/NLRJOTQL2CFLT7MZQTCMEL4ZGJ/bundle.json","state":"https://pith.science/pith/NLRJOTQL2CFLT7MZQTCMEL4ZGJ/state.json","well_known_bundle":"https://pith.science/.well-known/pith/NLRJOTQL2CFLT7MZQTCMEL4ZGJ/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:NLRJOTQL2CFLT7MZQTCMEL4ZGJ","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":"414393d826582d7321c3ddacddc4c2505aa30f9110e02dbf06c74a9a15747e17","cross_cats_sorted":["cond-mat.mtrl-sci"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cond-mat.soft","submitted_at":"2019-07-08T10:52:17Z","title_canon_sha256":"716c76d9895f456675b4343d84dbfe49f9d32a41ffd16aad9c217d2c5f303441"},"schema_version":"1.0","source":{"id":"1907.03500","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1907.03500","created_at":"2026-05-17T23:41:14Z"},{"alias_kind":"arxiv_version","alias_value":"1907.03500v1","created_at":"2026-05-17T23:41:14Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1907.03500","created_at":"2026-05-17T23:41:14Z"},{"alias_kind":"pith_short_12","alias_value":"NLRJOTQL2CFL","created_at":"2026-05-18T12:33:24Z"},{"alias_kind":"pith_short_16","alias_value":"NLRJOTQL2CFLT7MZ","created_at":"2026-05-18T12:33:24Z"},{"alias_kind":"pith_short_8","alias_value":"NLRJOTQL","created_at":"2026-05-18T12:33:24Z"}],"graph_snapshots":[{"event_id":"sha256:fa19b2a6a2a70b5058d2afd6278c8412a63caffeca071b60464eed2a217f2028","target":"graph","created_at":"2026-05-17T23:41:14Z","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":"Uniaxial tensile tests are performed on a polymethyl methacrylate (PMMA) grade over a range of temperatures near the glass transition and over two decades of strain rate. Deformation maps are constructed for Young's modulus, flow strength, and failure strain as a function of temperature for selected strain rates. The glassy, glass transition and rubbery regimes are identified, and constitutive relations are calibrated for the modulus and flow strength within each regime.","authors_text":"Frederik Van Loock, Norman A. Fleck","cross_cats":["cond-mat.mtrl-sci"],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cond-mat.soft","submitted_at":"2019-07-08T10:52:17Z","title":"Deformation and failure maps for PMMA in uniaxial tension"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1907.03500","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":"sha256:9a656a39783e8e2134f843abce16561201cd7724c117bbd213b72b2fd1e11c9d","target":"record","created_at":"2026-05-17T23:41:14Z","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":"414393d826582d7321c3ddacddc4c2505aa30f9110e02dbf06c74a9a15747e17","cross_cats_sorted":["cond-mat.mtrl-sci"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cond-mat.soft","submitted_at":"2019-07-08T10:52:17Z","title_canon_sha256":"716c76d9895f456675b4343d84dbfe49f9d32a41ffd16aad9c217d2c5f303441"},"schema_version":"1.0","source":{"id":"1907.03500","kind":"arxiv","version":1}},"canonical_sha256":"6ae2974e0bd08ab9fd9984c4c22f99326897ac7edf79441860a20cce53956cb0","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"6ae2974e0bd08ab9fd9984c4c22f99326897ac7edf79441860a20cce53956cb0","first_computed_at":"2026-05-17T23:41:14.459250Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:41:14.459250Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"nLuL2BU1w33V+IvJXte8ff3IaptAb/nhmV/RaGrKQBMuw1odQ9VBsVzLARtqowru1M4I/WSCgD+z7wNgYSUvCQ==","signature_status":"signed_v1","signed_at":"2026-05-17T23:41:14.459633Z","signed_message":"canonical_sha256_bytes"},"source_id":"1907.03500","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:9a656a39783e8e2134f843abce16561201cd7724c117bbd213b72b2fd1e11c9d","sha256:fa19b2a6a2a70b5058d2afd6278c8412a63caffeca071b60464eed2a217f2028"],"state_sha256":"f4eafa28c181785f71730b6d9852341a9f36c83b9169a4a1fc54ab2e46ebbe44"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"1S1kZwFqwcN5FdsYps1bT3CyA9nOj6Hl5sNdRhLdAouQYd5kCRhmy8Bni0FPJYgcm+RxmGDkSWs0kMUhjtgtCA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-25T16:11:58.804109Z","bundle_sha256":"5489d699a2d48192088a46c73c1323629b0bd335672fd43ff65b4c4eca2213f8"}}