{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2017:YSOO7S7VE5BSBYAP3R2V65A3VE","short_pith_number":"pith:YSOO7S7V","canonical_record":{"source":{"id":"1702.02874","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CY","submitted_at":"2017-02-09T16:18:11Z","cross_cats_sorted":[],"title_canon_sha256":"ac49e4275505c8d117591958e1f9baafdd85a6088b4b33d54e9c2ca9dc076e62","abstract_canon_sha256":"731d95508d44e4f11c59d32d20e343cc1ce85acb4998149992c7517ceba2a135"},"schema_version":"1.0"},"canonical_sha256":"c49cefcbf5274320e00fdc755f741ba93e5b268ad84e309738ca259b4f35702a","source":{"kind":"arxiv","id":"1702.02874","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1702.02874","created_at":"2026-05-18T00:51:02Z"},{"alias_kind":"arxiv_version","alias_value":"1702.02874v1","created_at":"2026-05-18T00:51:02Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1702.02874","created_at":"2026-05-18T00:51:02Z"},{"alias_kind":"pith_short_12","alias_value":"YSOO7S7VE5BS","created_at":"2026-05-18T12:31:56Z"},{"alias_kind":"pith_short_16","alias_value":"YSOO7S7VE5BSBYAP","created_at":"2026-05-18T12:31:56Z"},{"alias_kind":"pith_short_8","alias_value":"YSOO7S7V","created_at":"2026-05-18T12:31:56Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2017:YSOO7S7VE5BSBYAP3R2V65A3VE","target":"record","payload":{"canonical_record":{"source":{"id":"1702.02874","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CY","submitted_at":"2017-02-09T16:18:11Z","cross_cats_sorted":[],"title_canon_sha256":"ac49e4275505c8d117591958e1f9baafdd85a6088b4b33d54e9c2ca9dc076e62","abstract_canon_sha256":"731d95508d44e4f11c59d32d20e343cc1ce85acb4998149992c7517ceba2a135"},"schema_version":"1.0"},"canonical_sha256":"c49cefcbf5274320e00fdc755f741ba93e5b268ad84e309738ca259b4f35702a","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:51:02.187488Z","signature_b64":"5txcmw0cMDxFgkN76Y8urovGADZqE6s5byZUd1ZrhRu0aheu7d0Bs9hIzeE2m9+/4Im01wkvuFCzCbmJXFJpCQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"c49cefcbf5274320e00fdc755f741ba93e5b268ad84e309738ca259b4f35702a","last_reissued_at":"2026-05-18T00:51:02.186964Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:51:02.186964Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1702.02874","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":"2026-05-18T00:51:02Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"3zNhAfGY+sfG7R6em4+JMQMAbqcpVxQI6f9FAwK/p1/Jiz37hNNe7K+6NTqeFG9ssfzYT/9CwZG6vgboJBm0Bw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-25T14:17:02.062070Z"},"content_sha256":"93632af7b307bbac8e994a89ef72fac1c29bcdd4f76787e85951ff7932f5dabd","schema_version":"1.0","event_id":"sha256:93632af7b307bbac8e994a89ef72fac1c29bcdd4f76787e85951ff7932f5dabd"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2017:YSOO7S7VE5BSBYAP3R2V65A3VE","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Pushing STEM-education through a social-media-based contest format - experiences and lessons-learned from the H2020-project SciChallenge","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cs.CY","authors_text":"Bernhard J\\\"ager, Chris Gary, Christos Mettouris, Edina Hajdu, Florian Huber, George A. Papadopoulos, Phil Smith, Sabri Pllana, Tamara Matevc, Zdenek Hrdlicka, Zs\\'ofia Ocsovszky","submitted_at":"2017-02-09T16:18:11Z","abstract_excerpt":"Science education is a crucial issue with long-term impacts for Europe as the low enrolment rates in the STEM-fields, including (natural) science, technology, engineering and mathematics, will lead to a workforce problem in research and development. In order to address this challenge, the EU-funded research project SciChallenge (project.scichallenge.eu) aims to find a new way for getting young people more interested in STEM. For this purpose, the project developed and implemented a social-media-based STEM-contest for young people, which aims at increasing the attractiveness of science educatio"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1702.02874","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":"2026-05-18T00:51:02Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"QjdMosbNAW5AoldQpThgCDXpqwa9gMn23N1Goeruk44TNQ5iXZ119nxcZDBlo7FbwW0OUN1LH9Shb0ErFXzwAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-25T14:17:02.062450Z"},"content_sha256":"d7ddbfecb7df91e6f5be1b0a337b5344d183da94d530bf825c1b72bc674b74a3","schema_version":"1.0","event_id":"sha256:d7ddbfecb7df91e6f5be1b0a337b5344d183da94d530bf825c1b72bc674b74a3"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/YSOO7S7VE5BSBYAP3R2V65A3VE/bundle.json","state_url":"https://pith.science/pith/YSOO7S7VE5BSBYAP3R2V65A3VE/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/YSOO7S7VE5BSBYAP3R2V65A3VE/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":"2026-06-25T14:17:02Z","links":{"resolver":"https://pith.science/pith/YSOO7S7VE5BSBYAP3R2V65A3VE","bundle":"https://pith.science/pith/YSOO7S7VE5BSBYAP3R2V65A3VE/bundle.json","state":"https://pith.science/pith/YSOO7S7VE5BSBYAP3R2V65A3VE/state.json","well_known_bundle":"https://pith.science/.well-known/pith/YSOO7S7VE5BSBYAP3R2V65A3VE/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:YSOO7S7VE5BSBYAP3R2V65A3VE","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":"731d95508d44e4f11c59d32d20e343cc1ce85acb4998149992c7517ceba2a135","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CY","submitted_at":"2017-02-09T16:18:11Z","title_canon_sha256":"ac49e4275505c8d117591958e1f9baafdd85a6088b4b33d54e9c2ca9dc076e62"},"schema_version":"1.0","source":{"id":"1702.02874","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1702.02874","created_at":"2026-05-18T00:51:02Z"},{"alias_kind":"arxiv_version","alias_value":"1702.02874v1","created_at":"2026-05-18T00:51:02Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1702.02874","created_at":"2026-05-18T00:51:02Z"},{"alias_kind":"pith_short_12","alias_value":"YSOO7S7VE5BS","created_at":"2026-05-18T12:31:56Z"},{"alias_kind":"pith_short_16","alias_value":"YSOO7S7VE5BSBYAP","created_at":"2026-05-18T12:31:56Z"},{"alias_kind":"pith_short_8","alias_value":"YSOO7S7V","created_at":"2026-05-18T12:31:56Z"}],"graph_snapshots":[{"event_id":"sha256:d7ddbfecb7df91e6f5be1b0a337b5344d183da94d530bf825c1b72bc674b74a3","target":"graph","created_at":"2026-05-18T00:51:02Z","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":"Science education is a crucial issue with long-term impacts for Europe as the low enrolment rates in the STEM-fields, including (natural) science, technology, engineering and mathematics, will lead to a workforce problem in research and development. In order to address this challenge, the EU-funded research project SciChallenge (project.scichallenge.eu) aims to find a new way for getting young people more interested in STEM. For this purpose, the project developed and implemented a social-media-based STEM-contest for young people, which aims at increasing the attractiveness of science educatio","authors_text":"Bernhard J\\\"ager, Chris Gary, Christos Mettouris, Edina Hajdu, Florian Huber, George A. Papadopoulos, Phil Smith, Sabri Pllana, Tamara Matevc, Zdenek Hrdlicka, Zs\\'ofia Ocsovszky","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CY","submitted_at":"2017-02-09T16:18:11Z","title":"Pushing STEM-education through a social-media-based contest format - experiences and lessons-learned from the H2020-project SciChallenge"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1702.02874","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":"sha256:93632af7b307bbac8e994a89ef72fac1c29bcdd4f76787e85951ff7932f5dabd","target":"record","created_at":"2026-05-18T00:51:02Z","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":"731d95508d44e4f11c59d32d20e343cc1ce85acb4998149992c7517ceba2a135","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CY","submitted_at":"2017-02-09T16:18:11Z","title_canon_sha256":"ac49e4275505c8d117591958e1f9baafdd85a6088b4b33d54e9c2ca9dc076e62"},"schema_version":"1.0","source":{"id":"1702.02874","kind":"arxiv","version":1}},"canonical_sha256":"c49cefcbf5274320e00fdc755f741ba93e5b268ad84e309738ca259b4f35702a","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"c49cefcbf5274320e00fdc755f741ba93e5b268ad84e309738ca259b4f35702a","first_computed_at":"2026-05-18T00:51:02.186964Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:51:02.186964Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"5txcmw0cMDxFgkN76Y8urovGADZqE6s5byZUd1ZrhRu0aheu7d0Bs9hIzeE2m9+/4Im01wkvuFCzCbmJXFJpCQ==","signature_status":"signed_v1","signed_at":"2026-05-18T00:51:02.187488Z","signed_message":"canonical_sha256_bytes"},"source_id":"1702.02874","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:93632af7b307bbac8e994a89ef72fac1c29bcdd4f76787e85951ff7932f5dabd","sha256:d7ddbfecb7df91e6f5be1b0a337b5344d183da94d530bf825c1b72bc674b74a3"],"state_sha256":"b6870065eafc47414ee1e88d6d3c8fc7916ceac3bf77f10fec3882b8822194fd"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Qhd3pm9kbjn0v4eeAS7d30/eWeQ7rSt6mGrjJEAAvoAixYImPzIO+WWfwWoYZFEXmyi1sBZNFByl6HMc6IP9BA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-25T14:17:02.064453Z","bundle_sha256":"3265473efcb860d0eac72acc64806dcbb24ad03646d1b0181795717d0c5b2d16"}}