{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2015:RJSJNNYIRIZSW5NILJBTMROE2D","short_pith_number":"pith:RJSJNNYI","canonical_record":{"source":{"id":"1512.06869","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ed-ph","submitted_at":"2015-12-21T21:06:26Z","cross_cats_sorted":[],"title_canon_sha256":"25b134d06fd1f4a2f59d914dbe2d116826926e7c016b3f0820830b7721b2226e","abstract_canon_sha256":"893970bd6b34b31f93ffd044a6eb86a05e669ea3b5c25e20a02b272060a48a97"},"schema_version":"1.0"},"canonical_sha256":"8a6496b7088a332b75a85a433645c4d0d75dc8a0824faab8d179ceabb68499d6","source":{"kind":"arxiv","id":"1512.06869","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1512.06869","created_at":"2026-05-18T01:12:40Z"},{"alias_kind":"arxiv_version","alias_value":"1512.06869v2","created_at":"2026-05-18T01:12:40Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1512.06869","created_at":"2026-05-18T01:12:40Z"},{"alias_kind":"pith_short_12","alias_value":"RJSJNNYIRIZS","created_at":"2026-05-18T12:29:39Z"},{"alias_kind":"pith_short_16","alias_value":"RJSJNNYIRIZSW5NI","created_at":"2026-05-18T12:29:39Z"},{"alias_kind":"pith_short_8","alias_value":"RJSJNNYI","created_at":"2026-05-18T12:29:39Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2015:RJSJNNYIRIZSW5NILJBTMROE2D","target":"record","payload":{"canonical_record":{"source":{"id":"1512.06869","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ed-ph","submitted_at":"2015-12-21T21:06:26Z","cross_cats_sorted":[],"title_canon_sha256":"25b134d06fd1f4a2f59d914dbe2d116826926e7c016b3f0820830b7721b2226e","abstract_canon_sha256":"893970bd6b34b31f93ffd044a6eb86a05e669ea3b5c25e20a02b272060a48a97"},"schema_version":"1.0"},"canonical_sha256":"8a6496b7088a332b75a85a433645c4d0d75dc8a0824faab8d179ceabb68499d6","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:12:40.375746Z","signature_b64":"ekmkibet1g1oXVVFHftClrtJye2cueGjSk4aSOaCu9lvJYpNIfFL6bA50iu8J4aZPH7zs5UmxDzOMdJ+fgv8Ag==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"8a6496b7088a332b75a85a433645c4d0d75dc8a0824faab8d179ceabb68499d6","last_reissued_at":"2026-05-18T01:12:40.375341Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:12:40.375341Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1512.06869","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":"2026-05-18T01:12:40Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"oD+7RGLWf1pWhFtEc+NTCKIPzAxenva5B3BOGmkHZ/Oz5D9Uj6yUEBQI9XEwA4Gvbyy4FXTdos7E+8Aze11+Aw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-31T04:53:45.482132Z"},"content_sha256":"8ed54d7b2846107ea7fb6d6c228a718fe075779833a422c7a2c3d784d2719a82","schema_version":"1.0","event_id":"sha256:8ed54d7b2846107ea7fb6d6c228a718fe075779833a422c7a2c3d784d2719a82"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2015:RJSJNNYIRIZSW5NILJBTMROE2D","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Students' epistemologies about experimental physics: Validating the Colorado Learning Attitudes about Science Survey for Experimental Physics","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"physics.ed-ph","authors_text":"Bethany R. Wilcox, H.J. Lewandowski","submitted_at":"2015-12-21T21:06:26Z","abstract_excerpt":"Student learning in instructional physics labs represents a growing area of research that includes investigations of students' beliefs and expectations about the nature of experimental physics. To directly probe students' epistemologies about experimental physics and support broader lab transformation efforts at the University of Colorado Boulder (CU) and elsewhere, we developed the Colorado Learning Attitudes about Science Survey for Experimental Physics (E-CLASS). Previous work with this assessment has included establishing the accuracy and clarity of the instrument through student interview"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1512.06869","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":"2026-05-18T01:12:40Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Mby5gkehOtLSZbFVGp2gYCp1ZQcXMm3h6KucgwGA+YtblGomDm8hiDi9t5LGkRMh4GArDL/d5Z/MNyYPP3BOCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-31T04:53:45.482865Z"},"content_sha256":"8aeab9dc6b0b91ef07ce8fe68de98e64c0dd80dee9a44c2ff9e94aa5277d6753","schema_version":"1.0","event_id":"sha256:8aeab9dc6b0b91ef07ce8fe68de98e64c0dd80dee9a44c2ff9e94aa5277d6753"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/RJSJNNYIRIZSW5NILJBTMROE2D/bundle.json","state_url":"https://pith.science/pith/RJSJNNYIRIZSW5NILJBTMROE2D/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/RJSJNNYIRIZSW5NILJBTMROE2D/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":"2026-05-31T04:53:45Z","links":{"resolver":"https://pith.science/pith/RJSJNNYIRIZSW5NILJBTMROE2D","bundle":"https://pith.science/pith/RJSJNNYIRIZSW5NILJBTMROE2D/bundle.json","state":"https://pith.science/pith/RJSJNNYIRIZSW5NILJBTMROE2D/state.json","well_known_bundle":"https://pith.science/.well-known/pith/RJSJNNYIRIZSW5NILJBTMROE2D/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:RJSJNNYIRIZSW5NILJBTMROE2D","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":"893970bd6b34b31f93ffd044a6eb86a05e669ea3b5c25e20a02b272060a48a97","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ed-ph","submitted_at":"2015-12-21T21:06:26Z","title_canon_sha256":"25b134d06fd1f4a2f59d914dbe2d116826926e7c016b3f0820830b7721b2226e"},"schema_version":"1.0","source":{"id":"1512.06869","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1512.06869","created_at":"2026-05-18T01:12:40Z"},{"alias_kind":"arxiv_version","alias_value":"1512.06869v2","created_at":"2026-05-18T01:12:40Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1512.06869","created_at":"2026-05-18T01:12:40Z"},{"alias_kind":"pith_short_12","alias_value":"RJSJNNYIRIZS","created_at":"2026-05-18T12:29:39Z"},{"alias_kind":"pith_short_16","alias_value":"RJSJNNYIRIZSW5NI","created_at":"2026-05-18T12:29:39Z"},{"alias_kind":"pith_short_8","alias_value":"RJSJNNYI","created_at":"2026-05-18T12:29:39Z"}],"graph_snapshots":[{"event_id":"sha256:8aeab9dc6b0b91ef07ce8fe68de98e64c0dd80dee9a44c2ff9e94aa5277d6753","target":"graph","created_at":"2026-05-18T01:12:40Z","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":"Student learning in instructional physics labs represents a growing area of research that includes investigations of students' beliefs and expectations about the nature of experimental physics. To directly probe students' epistemologies about experimental physics and support broader lab transformation efforts at the University of Colorado Boulder (CU) and elsewhere, we developed the Colorado Learning Attitudes about Science Survey for Experimental Physics (E-CLASS). Previous work with this assessment has included establishing the accuracy and clarity of the instrument through student interview","authors_text":"Bethany R. Wilcox, H.J. Lewandowski","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ed-ph","submitted_at":"2015-12-21T21:06:26Z","title":"Students' epistemologies about experimental physics: Validating the Colorado Learning Attitudes about Science Survey for Experimental Physics"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1512.06869","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":"sha256:8ed54d7b2846107ea7fb6d6c228a718fe075779833a422c7a2c3d784d2719a82","target":"record","created_at":"2026-05-18T01:12:40Z","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":"893970bd6b34b31f93ffd044a6eb86a05e669ea3b5c25e20a02b272060a48a97","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ed-ph","submitted_at":"2015-12-21T21:06:26Z","title_canon_sha256":"25b134d06fd1f4a2f59d914dbe2d116826926e7c016b3f0820830b7721b2226e"},"schema_version":"1.0","source":{"id":"1512.06869","kind":"arxiv","version":2}},"canonical_sha256":"8a6496b7088a332b75a85a433645c4d0d75dc8a0824faab8d179ceabb68499d6","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"8a6496b7088a332b75a85a433645c4d0d75dc8a0824faab8d179ceabb68499d6","first_computed_at":"2026-05-18T01:12:40.375341Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:12:40.375341Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"ekmkibet1g1oXVVFHftClrtJye2cueGjSk4aSOaCu9lvJYpNIfFL6bA50iu8J4aZPH7zs5UmxDzOMdJ+fgv8Ag==","signature_status":"signed_v1","signed_at":"2026-05-18T01:12:40.375746Z","signed_message":"canonical_sha256_bytes"},"source_id":"1512.06869","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:8ed54d7b2846107ea7fb6d6c228a718fe075779833a422c7a2c3d784d2719a82","sha256:8aeab9dc6b0b91ef07ce8fe68de98e64c0dd80dee9a44c2ff9e94aa5277d6753"],"state_sha256":"9dd4f9f2f5bf76aecfcf4c1699eba7171fd862bd88d417728eec22d0228e32ee"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"SI6cgZ2FPVBAbm8n0Bxij5C7hcoN2o4HXpID6qugDCc9z36Fabt0uisZXVVDlMYWjVTnxTc1gBliYV5JjcbMCw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-31T04:53:45.485557Z","bundle_sha256":"547c95f7cb48b21dd1fb03d6966dc3a472fa0b1bff7331b2cfcd0d4bd110eca1"}}