{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2011:6YXKOCRVZ23D52IKWH3BOHTJ2C","short_pith_number":"pith:6YXKOCRV","canonical_record":{"source":{"id":"1111.6121","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CY","submitted_at":"2011-11-25T22:22:36Z","cross_cats_sorted":[],"title_canon_sha256":"0bc24a3486ba1a2b035c2e2291e2ce08f3176acb6a543d2dc6bb0a4e15fe711c","abstract_canon_sha256":"4a902e1459fa8cbcb2306f21f6e1f3c1b6bcaa737d97927ac47d7e85bdc55421"},"schema_version":"1.0"},"canonical_sha256":"f62ea70a35ceb63ee90ab1f6171e69d090fa374bffe76b216367a01e2ac8101b","source":{"kind":"arxiv","id":"1111.6121","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1111.6121","created_at":"2026-05-18T04:07:31Z"},{"alias_kind":"arxiv_version","alias_value":"1111.6121v1","created_at":"2026-05-18T04:07:31Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1111.6121","created_at":"2026-05-18T04:07:31Z"},{"alias_kind":"pith_short_12","alias_value":"6YXKOCRVZ23D","created_at":"2026-05-18T12:26:22Z"},{"alias_kind":"pith_short_16","alias_value":"6YXKOCRVZ23D52IK","created_at":"2026-05-18T12:26:22Z"},{"alias_kind":"pith_short_8","alias_value":"6YXKOCRV","created_at":"2026-05-18T12:26:22Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2011:6YXKOCRVZ23D52IKWH3BOHTJ2C","target":"record","payload":{"canonical_record":{"source":{"id":"1111.6121","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CY","submitted_at":"2011-11-25T22:22:36Z","cross_cats_sorted":[],"title_canon_sha256":"0bc24a3486ba1a2b035c2e2291e2ce08f3176acb6a543d2dc6bb0a4e15fe711c","abstract_canon_sha256":"4a902e1459fa8cbcb2306f21f6e1f3c1b6bcaa737d97927ac47d7e85bdc55421"},"schema_version":"1.0"},"canonical_sha256":"f62ea70a35ceb63ee90ab1f6171e69d090fa374bffe76b216367a01e2ac8101b","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T04:07:31.774221Z","signature_b64":"UQoPty0mToUBFGDGuHFJYyj51YF5/fyu1eHWcV1qaNEHIctfkRaZtPKbvhL52PTLl/hepM2uv7wlfHaj8utnDQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"f62ea70a35ceb63ee90ab1f6171e69d090fa374bffe76b216367a01e2ac8101b","last_reissued_at":"2026-05-18T04:07:31.773540Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T04:07:31.773540Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1111.6121","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":"2026-05-18T04:07:31Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"URiiYz5Uaq3hR+lW1dlF+DenJStmKVmtMpUYEq1Kufhh7vRIbySHGcDO37DsfH0Y8LOH48XJ9/+yGqTd/HG3DA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-02T13:07:25.709840Z"},"content_sha256":"3cc70ee23b66d02950c07846265b8f6f35eda353925dead1ba60e4f59136500c","schema_version":"1.0","event_id":"sha256:3cc70ee23b66d02950c07846265b8f6f35eda353925dead1ba60e4f59136500c"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2011:6YXKOCRVZ23D52IKWH3BOHTJ2C","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Virtual Worlds as a Support to Engineering Teaching","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cs.CY","authors_text":"Cristian Rusu, Marta Barr\\'ia, Roberto Mu\\~noz","submitted_at":"2011-11-25T22:22:36Z","abstract_excerpt":"Virtual Worlds (VWs) are an emerging technology used by a growing number of educational institutions around the world. It is an environment, a way of learning and an educational tool that allows different levels of online interaction. In the course \"Programming I\", of the career Informatics Engineering at Universidad de Valpara\\'iso, we conducted a pilot experience with the VW of Second Life, in order to evaluate the potential of using VWs in the teaching practice."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1111.6121","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":"2026-05-18T04:07:31Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ZPEiohCxAz3EWdiLCOaatp0bPs/f8e2oxzvESQ5UAuXPeDi5G9JWDrQICQvdB3ddTdwZFLQMKvE1LGRGX2M/CA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-02T13:07:25.710183Z"},"content_sha256":"d3a9e7bc9b6c683cce64e310dcd7a995b4d85c7733410d4f3842c24755f34f09","schema_version":"1.0","event_id":"sha256:d3a9e7bc9b6c683cce64e310dcd7a995b4d85c7733410d4f3842c24755f34f09"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/6YXKOCRVZ23D52IKWH3BOHTJ2C/bundle.json","state_url":"https://pith.science/pith/6YXKOCRVZ23D52IKWH3BOHTJ2C/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/6YXKOCRVZ23D52IKWH3BOHTJ2C/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":"2026-06-02T13:07:25Z","links":{"resolver":"https://pith.science/pith/6YXKOCRVZ23D52IKWH3BOHTJ2C","bundle":"https://pith.science/pith/6YXKOCRVZ23D52IKWH3BOHTJ2C/bundle.json","state":"https://pith.science/pith/6YXKOCRVZ23D52IKWH3BOHTJ2C/state.json","well_known_bundle":"https://pith.science/.well-known/pith/6YXKOCRVZ23D52IKWH3BOHTJ2C/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2011:6YXKOCRVZ23D52IKWH3BOHTJ2C","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":"4a902e1459fa8cbcb2306f21f6e1f3c1b6bcaa737d97927ac47d7e85bdc55421","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CY","submitted_at":"2011-11-25T22:22:36Z","title_canon_sha256":"0bc24a3486ba1a2b035c2e2291e2ce08f3176acb6a543d2dc6bb0a4e15fe711c"},"schema_version":"1.0","source":{"id":"1111.6121","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1111.6121","created_at":"2026-05-18T04:07:31Z"},{"alias_kind":"arxiv_version","alias_value":"1111.6121v1","created_at":"2026-05-18T04:07:31Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1111.6121","created_at":"2026-05-18T04:07:31Z"},{"alias_kind":"pith_short_12","alias_value":"6YXKOCRVZ23D","created_at":"2026-05-18T12:26:22Z"},{"alias_kind":"pith_short_16","alias_value":"6YXKOCRVZ23D52IK","created_at":"2026-05-18T12:26:22Z"},{"alias_kind":"pith_short_8","alias_value":"6YXKOCRV","created_at":"2026-05-18T12:26:22Z"}],"graph_snapshots":[{"event_id":"sha256:d3a9e7bc9b6c683cce64e310dcd7a995b4d85c7733410d4f3842c24755f34f09","target":"graph","created_at":"2026-05-18T04:07:31Z","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":"Virtual Worlds (VWs) are an emerging technology used by a growing number of educational institutions around the world. It is an environment, a way of learning and an educational tool that allows different levels of online interaction. In the course \"Programming I\", of the career Informatics Engineering at Universidad de Valpara\\'iso, we conducted a pilot experience with the VW of Second Life, in order to evaluate the potential of using VWs in the teaching practice.","authors_text":"Cristian Rusu, Marta Barr\\'ia, Roberto Mu\\~noz","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CY","submitted_at":"2011-11-25T22:22:36Z","title":"Virtual Worlds as a Support to Engineering Teaching"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1111.6121","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":"sha256:3cc70ee23b66d02950c07846265b8f6f35eda353925dead1ba60e4f59136500c","target":"record","created_at":"2026-05-18T04:07:31Z","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":"4a902e1459fa8cbcb2306f21f6e1f3c1b6bcaa737d97927ac47d7e85bdc55421","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CY","submitted_at":"2011-11-25T22:22:36Z","title_canon_sha256":"0bc24a3486ba1a2b035c2e2291e2ce08f3176acb6a543d2dc6bb0a4e15fe711c"},"schema_version":"1.0","source":{"id":"1111.6121","kind":"arxiv","version":1}},"canonical_sha256":"f62ea70a35ceb63ee90ab1f6171e69d090fa374bffe76b216367a01e2ac8101b","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"f62ea70a35ceb63ee90ab1f6171e69d090fa374bffe76b216367a01e2ac8101b","first_computed_at":"2026-05-18T04:07:31.773540Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T04:07:31.773540Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"UQoPty0mToUBFGDGuHFJYyj51YF5/fyu1eHWcV1qaNEHIctfkRaZtPKbvhL52PTLl/hepM2uv7wlfHaj8utnDQ==","signature_status":"signed_v1","signed_at":"2026-05-18T04:07:31.774221Z","signed_message":"canonical_sha256_bytes"},"source_id":"1111.6121","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:3cc70ee23b66d02950c07846265b8f6f35eda353925dead1ba60e4f59136500c","sha256:d3a9e7bc9b6c683cce64e310dcd7a995b4d85c7733410d4f3842c24755f34f09"],"state_sha256":"f464f893460586bf2ec696f4815f2188a89cec10c61a34ad8a4a1e8906e76350"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"hTiiViIAke+gl4tla32au6fz+g/O3XZw1lRdMZn2KzhjHYIFXa68imSgWXU/lIiddOEzq6rNTaXqSYqU1UeRBQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-02T13:07:25.712023Z","bundle_sha256":"20f4f20f153f9599cd8ef672d69411afb51667e055d0ad6b1f4f5bee6c6724a1"}}