{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2025:XL2JRZQGZ2JPFER2NKJCLQMFFI","short_pith_number":"pith:XL2JRZQG","canonical_record":{"source":{"id":"2504.13759","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2025-04-18T15:51:56Z","cross_cats_sorted":["cs.LG"],"title_canon_sha256":"125d7c908d9236f2e7b939e8ceede3bb85e3712c609586b14c21302ea10cdc44","abstract_canon_sha256":"e4cc6720e7d154c8fda9f1411cfcfb3aea3e7d07992f170d96907cc698b6d796"},"schema_version":"1.0"},"canonical_sha256":"baf498e606ce92f2923a6a9225c1852a2399659037e5a8da922a9dddb9b13d52","source":{"kind":"arxiv","id":"2504.13759","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2504.13759","created_at":"2026-07-05T10:51:01Z"},{"alias_kind":"arxiv_version","alias_value":"2504.13759v1","created_at":"2026-07-05T10:51:01Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2504.13759","created_at":"2026-07-05T10:51:01Z"},{"alias_kind":"pith_short_12","alias_value":"XL2JRZQGZ2JP","created_at":"2026-07-05T10:51:01Z"},{"alias_kind":"pith_short_16","alias_value":"XL2JRZQGZ2JPFER2","created_at":"2026-07-05T10:51:01Z"},{"alias_kind":"pith_short_8","alias_value":"XL2JRZQG","created_at":"2026-07-05T10:51:01Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2025:XL2JRZQGZ2JPFER2NKJCLQMFFI","target":"record","payload":{"canonical_record":{"source":{"id":"2504.13759","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2025-04-18T15:51:56Z","cross_cats_sorted":["cs.LG"],"title_canon_sha256":"125d7c908d9236f2e7b939e8ceede3bb85e3712c609586b14c21302ea10cdc44","abstract_canon_sha256":"e4cc6720e7d154c8fda9f1411cfcfb3aea3e7d07992f170d96907cc698b6d796"},"schema_version":"1.0"},"canonical_sha256":"baf498e606ce92f2923a6a9225c1852a2399659037e5a8da922a9dddb9b13d52","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T10:51:01.754760Z","signature_b64":"OjupTX+i/dGpYMhsKeVxyeDP8dAP5eRmck7kN+2Bkn2WJYVGaA+kje5x4PNsMEFTlcZxIjiiGaYq2hdkcjEWBA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"baf498e606ce92f2923a6a9225c1852a2399659037e5a8da922a9dddb9b13d52","last_reissued_at":"2026-07-05T10:51:01.754227Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T10:51:01.754227Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2504.13759","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":"2026-07-05T10:51:01Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"JyzhS1EjGeoQQvlv3E/+Waq1fG8QENIotC+x66UlqvHcOTKmQoeSuZ+LOpVr341MbO1bXKkLXtU3c3VgQrWSDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-21T03:28:02.350375Z"},"content_sha256":"71ea55ddaf60500fc75a111404ac25b81e89e094bcfd53020e9dc02d80a4409d","schema_version":"1.0","event_id":"sha256:71ea55ddaf60500fc75a111404ac25b81e89e094bcfd53020e9dc02d80a4409d"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2025:XL2JRZQGZ2JPFER2NKJCLQMFFI","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Fragile Watermarking for Image Certification Using Deep Steganographic Embedding","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cs.LG"],"primary_cat":"cs.CV","authors_text":"Davide Ghiani, Federico Lama, Gian Luca Marcialis, Giulia Orr\\`u, Jefferson David Rodriguez Chivata, Marco Micheletto, Simone Maurizio La Cava, Stefano Lilliu","submitted_at":"2025-04-18T15:51:56Z","abstract_excerpt":"Modern identity verification systems increasingly rely on facial images embedded in biometric documents such as electronic passports. To ensure global interoperability and security, these images must comply with strict standards defined by the International Civil Aviation Organization (ICAO), which specify acquisition, quality, and format requirements. However, once issued, these images may undergo unintentional degradations (e.g., compression, resizing) or malicious manipulations (e.g., morphing) and deceive facial recognition systems. In this study, we explore fragile watermarking, based on "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2504.13759","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2504.13759/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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":"2026-07-05T10:51:01Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"6afC2dZOn3hI1lEH7qW568ftq/SuonRn7TLG/B0Hja+DJ6e9MRZKeACwUj7Vfk8Wc2YiCMmRqqVuffu5uvKKDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-21T03:28:02.350894Z"},"content_sha256":"c507a024bfa91a0896615db00bf3112c218267465e772bb0b92caaf00bdb9765","schema_version":"1.0","event_id":"sha256:c507a024bfa91a0896615db00bf3112c218267465e772bb0b92caaf00bdb9765"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/XL2JRZQGZ2JPFER2NKJCLQMFFI/bundle.json","state_url":"https://pith.science/pith/XL2JRZQGZ2JPFER2NKJCLQMFFI/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/XL2JRZQGZ2JPFER2NKJCLQMFFI/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":"2026-08-21T03:28:02Z","links":{"resolver":"https://pith.science/pith/XL2JRZQGZ2JPFER2NKJCLQMFFI","bundle":"https://pith.science/pith/XL2JRZQGZ2JPFER2NKJCLQMFFI/bundle.json","state":"https://pith.science/pith/XL2JRZQGZ2JPFER2NKJCLQMFFI/state.json","well_known_bundle":"https://pith.science/.well-known/pith/XL2JRZQGZ2JPFER2NKJCLQMFFI/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2025:XL2JRZQGZ2JPFER2NKJCLQMFFI","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":"e4cc6720e7d154c8fda9f1411cfcfb3aea3e7d07992f170d96907cc698b6d796","cross_cats_sorted":["cs.LG"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2025-04-18T15:51:56Z","title_canon_sha256":"125d7c908d9236f2e7b939e8ceede3bb85e3712c609586b14c21302ea10cdc44"},"schema_version":"1.0","source":{"id":"2504.13759","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2504.13759","created_at":"2026-07-05T10:51:01Z"},{"alias_kind":"arxiv_version","alias_value":"2504.13759v1","created_at":"2026-07-05T10:51:01Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2504.13759","created_at":"2026-07-05T10:51:01Z"},{"alias_kind":"pith_short_12","alias_value":"XL2JRZQGZ2JP","created_at":"2026-07-05T10:51:01Z"},{"alias_kind":"pith_short_16","alias_value":"XL2JRZQGZ2JPFER2","created_at":"2026-07-05T10:51:01Z"},{"alias_kind":"pith_short_8","alias_value":"XL2JRZQG","created_at":"2026-07-05T10:51:01Z"}],"graph_snapshots":[{"event_id":"sha256:c507a024bfa91a0896615db00bf3112c218267465e772bb0b92caaf00bdb9765","target":"graph","created_at":"2026-07-05T10:51:01Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/2504.13759/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Modern identity verification systems increasingly rely on facial images embedded in biometric documents such as electronic passports. To ensure global interoperability and security, these images must comply with strict standards defined by the International Civil Aviation Organization (ICAO), which specify acquisition, quality, and format requirements. However, once issued, these images may undergo unintentional degradations (e.g., compression, resizing) or malicious manipulations (e.g., morphing) and deceive facial recognition systems. In this study, we explore fragile watermarking, based on ","authors_text":"Davide Ghiani, Federico Lama, Gian Luca Marcialis, Giulia Orr\\`u, Jefferson David Rodriguez Chivata, Marco Micheletto, Simone Maurizio La Cava, Stefano Lilliu","cross_cats":["cs.LG"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2025-04-18T15:51:56Z","title":"Fragile Watermarking for Image Certification Using Deep Steganographic Embedding"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2504.13759","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":"sha256:71ea55ddaf60500fc75a111404ac25b81e89e094bcfd53020e9dc02d80a4409d","target":"record","created_at":"2026-07-05T10:51:01Z","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":"e4cc6720e7d154c8fda9f1411cfcfb3aea3e7d07992f170d96907cc698b6d796","cross_cats_sorted":["cs.LG"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2025-04-18T15:51:56Z","title_canon_sha256":"125d7c908d9236f2e7b939e8ceede3bb85e3712c609586b14c21302ea10cdc44"},"schema_version":"1.0","source":{"id":"2504.13759","kind":"arxiv","version":1}},"canonical_sha256":"baf498e606ce92f2923a6a9225c1852a2399659037e5a8da922a9dddb9b13d52","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"baf498e606ce92f2923a6a9225c1852a2399659037e5a8da922a9dddb9b13d52","first_computed_at":"2026-07-05T10:51:01.754227Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T10:51:01.754227Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"OjupTX+i/dGpYMhsKeVxyeDP8dAP5eRmck7kN+2Bkn2WJYVGaA+kje5x4PNsMEFTlcZxIjiiGaYq2hdkcjEWBA==","signature_status":"signed_v1","signed_at":"2026-07-05T10:51:01.754760Z","signed_message":"canonical_sha256_bytes"},"source_id":"2504.13759","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:71ea55ddaf60500fc75a111404ac25b81e89e094bcfd53020e9dc02d80a4409d","sha256:c507a024bfa91a0896615db00bf3112c218267465e772bb0b92caaf00bdb9765"],"state_sha256":"9e53912bfe467cf8284a665290e48126aebbbeebd10fc42405b1f6da7578adc5"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"x5ay52AKGbqkORV/CtJ8tqi+RgYAl9OoKvYFHvQoy+QR82haZcJ28NbX7qvFMn0X0LGXFblP1GM1pJRLnvISBA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-21T03:28:02.357341Z","bundle_sha256":"7824c078814c0ca17a5bfb34e8b17bf5ee5f70c6073c585c1e04e47d12fd731b"}}