{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2013:C673JCFELD7VFDZNNOT6SYPITD","short_pith_number":"pith:C673JCFE","canonical_record":{"source":{"id":"1311.2140","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2013-11-09T07:05:22Z","cross_cats_sorted":[],"title_canon_sha256":"371bc76b4031adfa4652f6d60e58c308e476287680aecb10712c465c33f18e6f","abstract_canon_sha256":"2b5510fa1542c45430a2c27865f1b90f12ac3bbe51f3d453199914d9053b5500"},"schema_version":"1.0"},"canonical_sha256":"17bfb488a458ff528f2d6ba7e961e898c1fb68fce149edd068997446484534b1","source":{"kind":"arxiv","id":"1311.2140","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1311.2140","created_at":"2026-05-18T01:09:21Z"},{"alias_kind":"arxiv_version","alias_value":"1311.2140v2","created_at":"2026-05-18T01:09:21Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1311.2140","created_at":"2026-05-18T01:09:21Z"},{"alias_kind":"pith_short_12","alias_value":"C673JCFELD7V","created_at":"2026-05-18T12:27:40Z"},{"alias_kind":"pith_short_16","alias_value":"C673JCFELD7VFDZN","created_at":"2026-05-18T12:27:40Z"},{"alias_kind":"pith_short_8","alias_value":"C673JCFE","created_at":"2026-05-18T12:27:40Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2013:C673JCFELD7VFDZNNOT6SYPITD","target":"record","payload":{"canonical_record":{"source":{"id":"1311.2140","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2013-11-09T07:05:22Z","cross_cats_sorted":[],"title_canon_sha256":"371bc76b4031adfa4652f6d60e58c308e476287680aecb10712c465c33f18e6f","abstract_canon_sha256":"2b5510fa1542c45430a2c27865f1b90f12ac3bbe51f3d453199914d9053b5500"},"schema_version":"1.0"},"canonical_sha256":"17bfb488a458ff528f2d6ba7e961e898c1fb68fce149edd068997446484534b1","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:09:21.840981Z","signature_b64":"eL1fs1JO5GoD0+hQBa6MaPDIsVhXu6ImqrZMvA4LBJpjWFjSTPPrBwu/lp6KsF1BFdmjMBC7L/vkNO5fgHnUDw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"17bfb488a458ff528f2d6ba7e961e898c1fb68fce149edd068997446484534b1","last_reissued_at":"2026-05-18T01:09:21.840576Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:09:21.840576Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1311.2140","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T01:09:21Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"bGaLf5L1zkruR5ALvhXelsBxZ6nFQK3lhH5nzdAhE9X+wBx1iaQ5XDZkVstunP5PxkpzQ3XNUPPc6xKagCf7Dw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-09T22:46:40.628343Z"},"content_sha256":"82beb242a25f85948d12a06d518c1173a882a2e26a6906deeea2c97f32662a93","schema_version":"1.0","event_id":"sha256:82beb242a25f85948d12a06d518c1173a882a2e26a6906deeea2c97f32662a93"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2013:C673JCFELD7VFDZNNOT6SYPITD","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"A method for measuring the contact area in instrumented indentation testing by tip scanning probe microscopy imaging","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.mtrl-sci","authors_text":"J.-C. Sangleb{\\oe}uf, J.-P. Guin, L. Charleux, M. Nivard, V. Keryvin, Y. Yokoyama","submitted_at":"2013-11-09T07:05:22Z","abstract_excerpt":"The determination of the contact area is a key step to derive mechanical properties such as hardness or an elastic modulus by instrumented indentation testing. Two families of procedures are dedicated to extracting this area: on the one hand, post mortem measurements that require residual imprint imaging, and on the other hand, direct methods that only rely on the load vs. the penetration depth curve. With the development of built-in scanning probe microscopy imaging capabilities such as atomic force microscopy and indentation tip scanning probe microscopy, last generation indentation devices "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1311.2140","kind":"arxiv","version":2},"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":"2026-05-18T01:09:21Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"npwUnuOz4QrX1H+HWbKJTtHdhgYDOX/f3G2Ahsxcd38WMoP0A6Hr0tDoDoCik4CenQrt6Atdqu25MZU5AF1ABg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-09T22:46:40.629089Z"},"content_sha256":"0dd7a2e6d61f55bb3a93e2f3b6ad94515c8c6f70f0be2fc2b6141828836fb764","schema_version":"1.0","event_id":"sha256:0dd7a2e6d61f55bb3a93e2f3b6ad94515c8c6f70f0be2fc2b6141828836fb764"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/C673JCFELD7VFDZNNOT6SYPITD/bundle.json","state_url":"https://pith.science/pith/C673JCFELD7VFDZNNOT6SYPITD/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/C673JCFELD7VFDZNNOT6SYPITD/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":"2026-06-09T22:46:40Z","links":{"resolver":"https://pith.science/pith/C673JCFELD7VFDZNNOT6SYPITD","bundle":"https://pith.science/pith/C673JCFELD7VFDZNNOT6SYPITD/bundle.json","state":"https://pith.science/pith/C673JCFELD7VFDZNNOT6SYPITD/state.json","well_known_bundle":"https://pith.science/.well-known/pith/C673JCFELD7VFDZNNOT6SYPITD/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:C673JCFELD7VFDZNNOT6SYPITD","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":"2b5510fa1542c45430a2c27865f1b90f12ac3bbe51f3d453199914d9053b5500","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2013-11-09T07:05:22Z","title_canon_sha256":"371bc76b4031adfa4652f6d60e58c308e476287680aecb10712c465c33f18e6f"},"schema_version":"1.0","source":{"id":"1311.2140","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1311.2140","created_at":"2026-05-18T01:09:21Z"},{"alias_kind":"arxiv_version","alias_value":"1311.2140v2","created_at":"2026-05-18T01:09:21Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1311.2140","created_at":"2026-05-18T01:09:21Z"},{"alias_kind":"pith_short_12","alias_value":"C673JCFELD7V","created_at":"2026-05-18T12:27:40Z"},{"alias_kind":"pith_short_16","alias_value":"C673JCFELD7VFDZN","created_at":"2026-05-18T12:27:40Z"},{"alias_kind":"pith_short_8","alias_value":"C673JCFE","created_at":"2026-05-18T12:27:40Z"}],"graph_snapshots":[{"event_id":"sha256:0dd7a2e6d61f55bb3a93e2f3b6ad94515c8c6f70f0be2fc2b6141828836fb764","target":"graph","created_at":"2026-05-18T01:09:21Z","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 determination of the contact area is a key step to derive mechanical properties such as hardness or an elastic modulus by instrumented indentation testing. Two families of procedures are dedicated to extracting this area: on the one hand, post mortem measurements that require residual imprint imaging, and on the other hand, direct methods that only rely on the load vs. the penetration depth curve. With the development of built-in scanning probe microscopy imaging capabilities such as atomic force microscopy and indentation tip scanning probe microscopy, last generation indentation devices ","authors_text":"J.-C. Sangleb{\\oe}uf, J.-P. Guin, L. Charleux, M. Nivard, V. Keryvin, Y. Yokoyama","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2013-11-09T07:05:22Z","title":"A method for measuring the contact area in instrumented indentation testing by tip scanning probe microscopy imaging"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1311.2140","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":"sha256:82beb242a25f85948d12a06d518c1173a882a2e26a6906deeea2c97f32662a93","target":"record","created_at":"2026-05-18T01:09:21Z","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":"2b5510fa1542c45430a2c27865f1b90f12ac3bbe51f3d453199914d9053b5500","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2013-11-09T07:05:22Z","title_canon_sha256":"371bc76b4031adfa4652f6d60e58c308e476287680aecb10712c465c33f18e6f"},"schema_version":"1.0","source":{"id":"1311.2140","kind":"arxiv","version":2}},"canonical_sha256":"17bfb488a458ff528f2d6ba7e961e898c1fb68fce149edd068997446484534b1","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"17bfb488a458ff528f2d6ba7e961e898c1fb68fce149edd068997446484534b1","first_computed_at":"2026-05-18T01:09:21.840576Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:09:21.840576Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"eL1fs1JO5GoD0+hQBa6MaPDIsVhXu6ImqrZMvA4LBJpjWFjSTPPrBwu/lp6KsF1BFdmjMBC7L/vkNO5fgHnUDw==","signature_status":"signed_v1","signed_at":"2026-05-18T01:09:21.840981Z","signed_message":"canonical_sha256_bytes"},"source_id":"1311.2140","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:82beb242a25f85948d12a06d518c1173a882a2e26a6906deeea2c97f32662a93","sha256:0dd7a2e6d61f55bb3a93e2f3b6ad94515c8c6f70f0be2fc2b6141828836fb764"],"state_sha256":"f5a059d13ac6e37ed47344747e571f1a9b207bac347e6b0bcce4a14298c55115"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"QSitV3MIjEH/HS7mXAcMpIq/rHa5gtdoqTwCbY4DfbjKjF6sFEBScziO8AoUVjZmquw9xsH4R0ho8bNG9oapDw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-09T22:46:40.633377Z","bundle_sha256":"c298d22eac2ab3bab58d2e374113883f28618575275700c16bcab370cf01a5dd"}}