{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2012:UMQJ2M3YLVXZNZZL4E5K3NQTJV","short_pith_number":"pith:UMQJ2M3Y","canonical_record":{"source":{"id":"1205.3964","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.AI","submitted_at":"2012-05-17T15:50:08Z","cross_cats_sorted":[],"title_canon_sha256":"fd45c8e7b8b0a430c198eb9d8d5b85a8dd2b84b86d2695f4ccabbc916498d875","abstract_canon_sha256":"defe330869f35891496287334de7670335723565e0d6f60682dfe0a003d7c3c4"},"schema_version":"1.0"},"canonical_sha256":"a3209d33785d6f96e72be13aadb6134d452f3813130f7f64c70755db8c24dfce","source":{"kind":"arxiv","id":"1205.3964","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1205.3964","created_at":"2026-05-18T03:55:24Z"},{"alias_kind":"arxiv_version","alias_value":"1205.3964v1","created_at":"2026-05-18T03:55:24Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1205.3964","created_at":"2026-05-18T03:55:24Z"},{"alias_kind":"pith_short_12","alias_value":"UMQJ2M3YLVXZ","created_at":"2026-05-18T12:27:23Z"},{"alias_kind":"pith_short_16","alias_value":"UMQJ2M3YLVXZNZZL","created_at":"2026-05-18T12:27:23Z"},{"alias_kind":"pith_short_8","alias_value":"UMQJ2M3Y","created_at":"2026-05-18T12:27:23Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2012:UMQJ2M3YLVXZNZZL4E5K3NQTJV","target":"record","payload":{"canonical_record":{"source":{"id":"1205.3964","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.AI","submitted_at":"2012-05-17T15:50:08Z","cross_cats_sorted":[],"title_canon_sha256":"fd45c8e7b8b0a430c198eb9d8d5b85a8dd2b84b86d2695f4ccabbc916498d875","abstract_canon_sha256":"defe330869f35891496287334de7670335723565e0d6f60682dfe0a003d7c3c4"},"schema_version":"1.0"},"canonical_sha256":"a3209d33785d6f96e72be13aadb6134d452f3813130f7f64c70755db8c24dfce","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:55:24.112386Z","signature_b64":"4kdzObejFsAbto+i01xRnZrT+4UsouvEyoHNzsNGdCmy4ZJC8xRTd9wQf526zch4hozj76XpfHNd0CD9QxK/Cw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"a3209d33785d6f96e72be13aadb6134d452f3813130f7f64c70755db8c24dfce","last_reissued_at":"2026-05-18T03:55:24.111805Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:55:24.111805Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1205.3964","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":"2026-05-18T03:55:24Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"v7EdB4SUEWqEhXeVt53LDvtwJ+it68+wbNa/pKYBRMS+C8UYZErisIedlUdcfQyiGJ0J6698R0+D4Wf3uaOkAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-22T05:56:33.029543Z"},"content_sha256":"7743bd1c3a33bb6af7105d4d911137715772090d78e49db3927493cab71fcb8d","schema_version":"1.0","event_id":"sha256:7743bd1c3a33bb6af7105d4d911137715772090d78e49db3927493cab71fcb8d"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2012:UMQJ2M3YLVXZNZZL4E5K3NQTJV","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Machine Recognition of Hand Written Characters using Neural Networks","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cs.AI","authors_text":"Ashish Chaturvedi, Yusuf Perwej","submitted_at":"2012-05-17T15:50:08Z","abstract_excerpt":"Even today in Twenty First Century Handwritten communication has its own stand and most of the times, in daily life it is globally using as means of communication and recording the information like to be shared with others. Challenges in handwritten characters recognition wholly lie in the variation and distortion of handwritten characters, since different people may use different style of handwriting, and direction to draw the same shape of the characters of their known script. This paper demonstrates the nature of handwritten characters, conversion of handwritten data into electronic data, a"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1205.3964","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":"2026-05-18T03:55:24Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Z2pyFXD/SwLYFnu69uVGIfEEsETvuXG4ht4Pb1BpICwfaqc/3JvZqw+kFmh1xH6vgh1toWQPOa05ZZgy1OvHBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-22T05:56:33.029893Z"},"content_sha256":"bd1c128deef7c5727db24872dfb4c1dd0d1fe36bdc5393434523bfe517063998","schema_version":"1.0","event_id":"sha256:bd1c128deef7c5727db24872dfb4c1dd0d1fe36bdc5393434523bfe517063998"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/UMQJ2M3YLVXZNZZL4E5K3NQTJV/bundle.json","state_url":"https://pith.science/pith/UMQJ2M3YLVXZNZZL4E5K3NQTJV/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/UMQJ2M3YLVXZNZZL4E5K3NQTJV/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":"2026-06-22T05:56:33Z","links":{"resolver":"https://pith.science/pith/UMQJ2M3YLVXZNZZL4E5K3NQTJV","bundle":"https://pith.science/pith/UMQJ2M3YLVXZNZZL4E5K3NQTJV/bundle.json","state":"https://pith.science/pith/UMQJ2M3YLVXZNZZL4E5K3NQTJV/state.json","well_known_bundle":"https://pith.science/.well-known/pith/UMQJ2M3YLVXZNZZL4E5K3NQTJV/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:UMQJ2M3YLVXZNZZL4E5K3NQTJV","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":"defe330869f35891496287334de7670335723565e0d6f60682dfe0a003d7c3c4","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.AI","submitted_at":"2012-05-17T15:50:08Z","title_canon_sha256":"fd45c8e7b8b0a430c198eb9d8d5b85a8dd2b84b86d2695f4ccabbc916498d875"},"schema_version":"1.0","source":{"id":"1205.3964","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1205.3964","created_at":"2026-05-18T03:55:24Z"},{"alias_kind":"arxiv_version","alias_value":"1205.3964v1","created_at":"2026-05-18T03:55:24Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1205.3964","created_at":"2026-05-18T03:55:24Z"},{"alias_kind":"pith_short_12","alias_value":"UMQJ2M3YLVXZ","created_at":"2026-05-18T12:27:23Z"},{"alias_kind":"pith_short_16","alias_value":"UMQJ2M3YLVXZNZZL","created_at":"2026-05-18T12:27:23Z"},{"alias_kind":"pith_short_8","alias_value":"UMQJ2M3Y","created_at":"2026-05-18T12:27:23Z"}],"graph_snapshots":[{"event_id":"sha256:bd1c128deef7c5727db24872dfb4c1dd0d1fe36bdc5393434523bfe517063998","target":"graph","created_at":"2026-05-18T03:55:24Z","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":"Even today in Twenty First Century Handwritten communication has its own stand and most of the times, in daily life it is globally using as means of communication and recording the information like to be shared with others. Challenges in handwritten characters recognition wholly lie in the variation and distortion of handwritten characters, since different people may use different style of handwriting, and direction to draw the same shape of the characters of their known script. This paper demonstrates the nature of handwritten characters, conversion of handwritten data into electronic data, a","authors_text":"Ashish Chaturvedi, Yusuf Perwej","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.AI","submitted_at":"2012-05-17T15:50:08Z","title":"Machine Recognition of Hand Written Characters using Neural Networks"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1205.3964","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":"sha256:7743bd1c3a33bb6af7105d4d911137715772090d78e49db3927493cab71fcb8d","target":"record","created_at":"2026-05-18T03:55:24Z","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":"defe330869f35891496287334de7670335723565e0d6f60682dfe0a003d7c3c4","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.AI","submitted_at":"2012-05-17T15:50:08Z","title_canon_sha256":"fd45c8e7b8b0a430c198eb9d8d5b85a8dd2b84b86d2695f4ccabbc916498d875"},"schema_version":"1.0","source":{"id":"1205.3964","kind":"arxiv","version":1}},"canonical_sha256":"a3209d33785d6f96e72be13aadb6134d452f3813130f7f64c70755db8c24dfce","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"a3209d33785d6f96e72be13aadb6134d452f3813130f7f64c70755db8c24dfce","first_computed_at":"2026-05-18T03:55:24.111805Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:55:24.111805Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"4kdzObejFsAbto+i01xRnZrT+4UsouvEyoHNzsNGdCmy4ZJC8xRTd9wQf526zch4hozj76XpfHNd0CD9QxK/Cw==","signature_status":"signed_v1","signed_at":"2026-05-18T03:55:24.112386Z","signed_message":"canonical_sha256_bytes"},"source_id":"1205.3964","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:7743bd1c3a33bb6af7105d4d911137715772090d78e49db3927493cab71fcb8d","sha256:bd1c128deef7c5727db24872dfb4c1dd0d1fe36bdc5393434523bfe517063998"],"state_sha256":"f60380842656a305740e3fb49690c555a4020d77497ac6e7e01055d89eb147a9"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"YnWjncNjQPcw1nojnA/8fPRL+b3x+zrjxUGhA8rEwpgxLnLfu5yNzMoj8BwuNwm+K3jNjCSFGQKFMCxUSkpZBw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-22T05:56:33.031842Z","bundle_sha256":"0fd20d5d2845297c4d5700fcdf22c466fa2aa405dc740cf521b9d03140d3536d"}}