{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2014:2PYSQYINERP6CQEBD2L76FM4F3","short_pith_number":"pith:2PYSQYIN","canonical_record":{"source":{"id":"1407.4865","kind":"arxiv","version":4},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.MM","submitted_at":"2014-07-18T01:37:21Z","cross_cats_sorted":[],"title_canon_sha256":"13c9dc911c83a1cc7199b69e161e7a0063ccadb4e0305e78c9af6ef8bd744816","abstract_canon_sha256":"df1f1d0eaf075dbc9578d8b68a8aed2f8f73aa70edd3d58ffc7f9afb3281298b"},"schema_version":"1.0"},"canonical_sha256":"d3f128610d245fe140811e97ff159c2edba8b3e47927c34d2726078ec5e02150","source":{"kind":"arxiv","id":"1407.4865","version":4},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1407.4865","created_at":"2026-05-18T02:45:13Z"},{"alias_kind":"arxiv_version","alias_value":"1407.4865v4","created_at":"2026-05-18T02:45:13Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1407.4865","created_at":"2026-05-18T02:45:13Z"},{"alias_kind":"pith_short_12","alias_value":"2PYSQYINERP6","created_at":"2026-05-18T12:28:11Z"},{"alias_kind":"pith_short_16","alias_value":"2PYSQYINERP6CQEB","created_at":"2026-05-18T12:28:11Z"},{"alias_kind":"pith_short_8","alias_value":"2PYSQYIN","created_at":"2026-05-18T12:28:11Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2014:2PYSQYINERP6CQEBD2L76FM4F3","target":"record","payload":{"canonical_record":{"source":{"id":"1407.4865","kind":"arxiv","version":4},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.MM","submitted_at":"2014-07-18T01:37:21Z","cross_cats_sorted":[],"title_canon_sha256":"13c9dc911c83a1cc7199b69e161e7a0063ccadb4e0305e78c9af6ef8bd744816","abstract_canon_sha256":"df1f1d0eaf075dbc9578d8b68a8aed2f8f73aa70edd3d58ffc7f9afb3281298b"},"schema_version":"1.0"},"canonical_sha256":"d3f128610d245fe140811e97ff159c2edba8b3e47927c34d2726078ec5e02150","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:45:13.929531Z","signature_b64":"qgsx+vHQ6cjsiPjCksNOXYg8m8FbC0f1C2JOUmWAXYMaxPoABiRX0Mg8U32zjV7yExLzbXxaKfLSkS371KBiDg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"d3f128610d245fe140811e97ff159c2edba8b3e47927c34d2726078ec5e02150","last_reissued_at":"2026-05-18T02:45:13.928919Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:45:13.928919Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1407.4865","source_version":4,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T02:45:13Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"hl8+ZcjjdSv4THDzwjB08N4fYTH7lGS9espvNJZ1HGzaX0G6ULZpJrgQ9n6WO3Y4lhqJuUYAuZUqRmuwywoKBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-08T23:46:30.620850Z"},"content_sha256":"7bebd85216af4051afbfdf7fe17cbbb1377802b9b5cf2268b9ed9b016e2bb152","schema_version":"1.0","event_id":"sha256:7bebd85216af4051afbfdf7fe17cbbb1377802b9b5cf2268b9ed9b016e2bb152"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2014:2PYSQYINERP6CQEBD2L76FM4F3","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Robust Lossless Semi Fragile Information Protection in Images","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cs.MM","authors_text":"Jay Prakash Gupta, Nishant Singh, Pushkar Dixit","submitted_at":"2014-07-18T01:37:21Z","abstract_excerpt":"Internet security finds it difficult to keep the information secure and to maintain the integrity of the data. Sending messages over the internet secretly is one of the major tasks as it is widely used for passing the message."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1407.4865","kind":"arxiv","version":4},"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":"2026-05-18T02:45:13Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"LQNXUnOY1xxMycecsmBxYwMNZr9GGQ7U5CD3eiZSA0W+dn8yjDTj4nsvJhDXLHo3TJuRBlIeCtyy0hS6IyplAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-08T23:46:30.621181Z"},"content_sha256":"b32c3721aa511edff2c40e293675c9f05ec41814dd147d4c88d6a06c20dea46b","schema_version":"1.0","event_id":"sha256:b32c3721aa511edff2c40e293675c9f05ec41814dd147d4c88d6a06c20dea46b"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/2PYSQYINERP6CQEBD2L76FM4F3/bundle.json","state_url":"https://pith.science/pith/2PYSQYINERP6CQEBD2L76FM4F3/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/2PYSQYINERP6CQEBD2L76FM4F3/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":"2026-06-08T23:46:30Z","links":{"resolver":"https://pith.science/pith/2PYSQYINERP6CQEBD2L76FM4F3","bundle":"https://pith.science/pith/2PYSQYINERP6CQEBD2L76FM4F3/bundle.json","state":"https://pith.science/pith/2PYSQYINERP6CQEBD2L76FM4F3/state.json","well_known_bundle":"https://pith.science/.well-known/pith/2PYSQYINERP6CQEBD2L76FM4F3/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2014:2PYSQYINERP6CQEBD2L76FM4F3","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":"df1f1d0eaf075dbc9578d8b68a8aed2f8f73aa70edd3d58ffc7f9afb3281298b","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.MM","submitted_at":"2014-07-18T01:37:21Z","title_canon_sha256":"13c9dc911c83a1cc7199b69e161e7a0063ccadb4e0305e78c9af6ef8bd744816"},"schema_version":"1.0","source":{"id":"1407.4865","kind":"arxiv","version":4}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1407.4865","created_at":"2026-05-18T02:45:13Z"},{"alias_kind":"arxiv_version","alias_value":"1407.4865v4","created_at":"2026-05-18T02:45:13Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1407.4865","created_at":"2026-05-18T02:45:13Z"},{"alias_kind":"pith_short_12","alias_value":"2PYSQYINERP6","created_at":"2026-05-18T12:28:11Z"},{"alias_kind":"pith_short_16","alias_value":"2PYSQYINERP6CQEB","created_at":"2026-05-18T12:28:11Z"},{"alias_kind":"pith_short_8","alias_value":"2PYSQYIN","created_at":"2026-05-18T12:28:11Z"}],"graph_snapshots":[{"event_id":"sha256:b32c3721aa511edff2c40e293675c9f05ec41814dd147d4c88d6a06c20dea46b","target":"graph","created_at":"2026-05-18T02:45:13Z","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":"Internet security finds it difficult to keep the information secure and to maintain the integrity of the data. Sending messages over the internet secretly is one of the major tasks as it is widely used for passing the message.","authors_text":"Jay Prakash Gupta, Nishant Singh, Pushkar Dixit","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.MM","submitted_at":"2014-07-18T01:37:21Z","title":"Robust Lossless Semi Fragile Information Protection in Images"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1407.4865","kind":"arxiv","version":4},"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":"sha256:7bebd85216af4051afbfdf7fe17cbbb1377802b9b5cf2268b9ed9b016e2bb152","target":"record","created_at":"2026-05-18T02:45:13Z","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":"df1f1d0eaf075dbc9578d8b68a8aed2f8f73aa70edd3d58ffc7f9afb3281298b","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.MM","submitted_at":"2014-07-18T01:37:21Z","title_canon_sha256":"13c9dc911c83a1cc7199b69e161e7a0063ccadb4e0305e78c9af6ef8bd744816"},"schema_version":"1.0","source":{"id":"1407.4865","kind":"arxiv","version":4}},"canonical_sha256":"d3f128610d245fe140811e97ff159c2edba8b3e47927c34d2726078ec5e02150","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"d3f128610d245fe140811e97ff159c2edba8b3e47927c34d2726078ec5e02150","first_computed_at":"2026-05-18T02:45:13.928919Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:45:13.928919Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"qgsx+vHQ6cjsiPjCksNOXYg8m8FbC0f1C2JOUmWAXYMaxPoABiRX0Mg8U32zjV7yExLzbXxaKfLSkS371KBiDg==","signature_status":"signed_v1","signed_at":"2026-05-18T02:45:13.929531Z","signed_message":"canonical_sha256_bytes"},"source_id":"1407.4865","source_kind":"arxiv","source_version":4}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:7bebd85216af4051afbfdf7fe17cbbb1377802b9b5cf2268b9ed9b016e2bb152","sha256:b32c3721aa511edff2c40e293675c9f05ec41814dd147d4c88d6a06c20dea46b"],"state_sha256":"45b0ce8a4ec1c6f4b1edd504d65406decf35fd6a9b9b6b6ae0c46feb3b1e579d"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"xukgZskri/DX+0eGsZhz26jaqrevXDCURZk8sr0NTCRdAprDEv82/8/TuEze09sgPZk4y+qwdPiKLw+oAiDECg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-08T23:46:30.622991Z","bundle_sha256":"bb207a6f69616451f08288417cab75a5a6e6346aedd8be6955613a4beb3e5626"}}