{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2019:XUSE7LUJDD2KZ56EIZ3PYUVK4U","short_pith_number":"pith:XUSE7LUJ","canonical_record":{"source":{"id":"1903.03341","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2019-03-08T09:48:32Z","cross_cats_sorted":[],"title_canon_sha256":"4eef6501aa6c185b099c6a9c9f9dae2dd582c1f5df7aae93d1577708f73202c9","abstract_canon_sha256":"ebcf536a9b5cb2f80bd13baafe5828eb46b8e9b6f776d36531860bef6b1fb6dc"},"schema_version":"1.0"},"canonical_sha256":"bd244fae8918f4acf7c44676fc52aae52ce2a778459d72918be631720c60c77c","source":{"kind":"arxiv","id":"1903.03341","version":3},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1903.03341","created_at":"2026-05-17T23:46:35Z"},{"alias_kind":"arxiv_version","alias_value":"1903.03341v3","created_at":"2026-05-17T23:46:35Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1903.03341","created_at":"2026-05-17T23:46:35Z"},{"alias_kind":"pith_short_12","alias_value":"XUSE7LUJDD2K","created_at":"2026-05-18T12:33:33Z"},{"alias_kind":"pith_short_16","alias_value":"XUSE7LUJDD2KZ56E","created_at":"2026-05-18T12:33:33Z"},{"alias_kind":"pith_short_8","alias_value":"XUSE7LUJ","created_at":"2026-05-18T12:33:33Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2019:XUSE7LUJDD2KZ56EIZ3PYUVK4U","target":"record","payload":{"canonical_record":{"source":{"id":"1903.03341","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2019-03-08T09:48:32Z","cross_cats_sorted":[],"title_canon_sha256":"4eef6501aa6c185b099c6a9c9f9dae2dd582c1f5df7aae93d1577708f73202c9","abstract_canon_sha256":"ebcf536a9b5cb2f80bd13baafe5828eb46b8e9b6f776d36531860bef6b1fb6dc"},"schema_version":"1.0"},"canonical_sha256":"bd244fae8918f4acf7c44676fc52aae52ce2a778459d72918be631720c60c77c","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:46:35.811478Z","signature_b64":"N2Li3/CDf1ow6emMG4qSVDC+g2wZXvXO7M9kmk1JRMDxUx1qzDg3QaDeWFoIHyjc8oWkea9CiNnAajYf2wjUBg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"bd244fae8918f4acf7c44676fc52aae52ce2a778459d72918be631720c60c77c","last_reissued_at":"2026-05-17T23:46:35.810965Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:46:35.810965Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1903.03341","source_version":3,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-17T23:46:35Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"qvME0UY/7NNxjuQPnsytMXDXJW9CkjjNV7fTK7ePUQPO73WLvCOZcXFk5NJGg1E8oeDdHmDiPES5sQPRi197DA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-24T11:46:17.988629Z"},"content_sha256":"5dccf5133248ec989e6809119c5162e24829613eb9eb24ae86b0f5073ab63b09","schema_version":"1.0","event_id":"sha256:5dccf5133248ec989e6809119c5162e24829613eb9eb24ae86b0f5073ab63b09"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2019:XUSE7LUJDD2KZ56EIZ3PYUVK4U","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"ICDAR 2019 Historical Document Reading Challenge on Large Structured Chinese Family Records","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cs.CV","authors_text":"Derek Dobson, Foteini Simistira Liwicki, Jon Morrey, Marcus Liwicki, Rajkumar Saini","submitted_at":"2019-03-08T09:48:32Z","abstract_excerpt":"We propose a Historical Document Reading Challenge on Large Chinese Structured Family Records, in short ICDAR2019 HDRC CHINESE. The objective of the proposed competition is to recognize and analyze the layout, and finally detect and recognize the textlines and characters of the large historical document collection containing more than 20 000 pages kindly provided by FamilySearch."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1903.03341","kind":"arxiv","version":3},"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":"2026-05-17T23:46:35Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Oq2Y2URVh7utcVcEc5t0vjMXwiBlOkmeWjExI9eqEPa1HN5daK58YDiiBj5RfKodqRQWQVdlUkYX3VkTwmeOAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-24T11:46:17.988974Z"},"content_sha256":"0eb4dd67b191f8576a222ea7d92bd393c5e4bb4a1fb3bd33d55cd3b1d34d2146","schema_version":"1.0","event_id":"sha256:0eb4dd67b191f8576a222ea7d92bd393c5e4bb4a1fb3bd33d55cd3b1d34d2146"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/XUSE7LUJDD2KZ56EIZ3PYUVK4U/bundle.json","state_url":"https://pith.science/pith/XUSE7LUJDD2KZ56EIZ3PYUVK4U/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/XUSE7LUJDD2KZ56EIZ3PYUVK4U/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":"2026-06-24T11:46:17Z","links":{"resolver":"https://pith.science/pith/XUSE7LUJDD2KZ56EIZ3PYUVK4U","bundle":"https://pith.science/pith/XUSE7LUJDD2KZ56EIZ3PYUVK4U/bundle.json","state":"https://pith.science/pith/XUSE7LUJDD2KZ56EIZ3PYUVK4U/state.json","well_known_bundle":"https://pith.science/.well-known/pith/XUSE7LUJDD2KZ56EIZ3PYUVK4U/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:XUSE7LUJDD2KZ56EIZ3PYUVK4U","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":"ebcf536a9b5cb2f80bd13baafe5828eb46b8e9b6f776d36531860bef6b1fb6dc","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2019-03-08T09:48:32Z","title_canon_sha256":"4eef6501aa6c185b099c6a9c9f9dae2dd582c1f5df7aae93d1577708f73202c9"},"schema_version":"1.0","source":{"id":"1903.03341","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1903.03341","created_at":"2026-05-17T23:46:35Z"},{"alias_kind":"arxiv_version","alias_value":"1903.03341v3","created_at":"2026-05-17T23:46:35Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1903.03341","created_at":"2026-05-17T23:46:35Z"},{"alias_kind":"pith_short_12","alias_value":"XUSE7LUJDD2K","created_at":"2026-05-18T12:33:33Z"},{"alias_kind":"pith_short_16","alias_value":"XUSE7LUJDD2KZ56E","created_at":"2026-05-18T12:33:33Z"},{"alias_kind":"pith_short_8","alias_value":"XUSE7LUJ","created_at":"2026-05-18T12:33:33Z"}],"graph_snapshots":[{"event_id":"sha256:0eb4dd67b191f8576a222ea7d92bd393c5e4bb4a1fb3bd33d55cd3b1d34d2146","target":"graph","created_at":"2026-05-17T23:46:35Z","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":"We propose a Historical Document Reading Challenge on Large Chinese Structured Family Records, in short ICDAR2019 HDRC CHINESE. The objective of the proposed competition is to recognize and analyze the layout, and finally detect and recognize the textlines and characters of the large historical document collection containing more than 20 000 pages kindly provided by FamilySearch.","authors_text":"Derek Dobson, Foteini Simistira Liwicki, Jon Morrey, Marcus Liwicki, Rajkumar Saini","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2019-03-08T09:48:32Z","title":"ICDAR 2019 Historical Document Reading Challenge on Large Structured Chinese Family Records"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1903.03341","kind":"arxiv","version":3},"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":"sha256:5dccf5133248ec989e6809119c5162e24829613eb9eb24ae86b0f5073ab63b09","target":"record","created_at":"2026-05-17T23:46:35Z","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":"ebcf536a9b5cb2f80bd13baafe5828eb46b8e9b6f776d36531860bef6b1fb6dc","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2019-03-08T09:48:32Z","title_canon_sha256":"4eef6501aa6c185b099c6a9c9f9dae2dd582c1f5df7aae93d1577708f73202c9"},"schema_version":"1.0","source":{"id":"1903.03341","kind":"arxiv","version":3}},"canonical_sha256":"bd244fae8918f4acf7c44676fc52aae52ce2a778459d72918be631720c60c77c","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"bd244fae8918f4acf7c44676fc52aae52ce2a778459d72918be631720c60c77c","first_computed_at":"2026-05-17T23:46:35.810965Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:46:35.810965Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"N2Li3/CDf1ow6emMG4qSVDC+g2wZXvXO7M9kmk1JRMDxUx1qzDg3QaDeWFoIHyjc8oWkea9CiNnAajYf2wjUBg==","signature_status":"signed_v1","signed_at":"2026-05-17T23:46:35.811478Z","signed_message":"canonical_sha256_bytes"},"source_id":"1903.03341","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:5dccf5133248ec989e6809119c5162e24829613eb9eb24ae86b0f5073ab63b09","sha256:0eb4dd67b191f8576a222ea7d92bd393c5e4bb4a1fb3bd33d55cd3b1d34d2146"],"state_sha256":"a705efa01f2219e1b3f5a8f1491ba1eefdd2cb0967dda4877010aad3b77d074c"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"NIt4df50MhVcGOkKzHCJds/5zUcMNsps7yTVI2twrgAGFZcfmwtH++cYUuC0FEzcPNxBBg5qBitt0W2PS3t3Dg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-24T11:46:17.990906Z","bundle_sha256":"ee0d281f5dd1da70de70a6d917440e301847cb37fc6500cf3e427a4c7cd36940"}}