{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2023:RGADPQDE7GM3OANN6LM4D2DDCN","short_pith_number":"pith:RGADPQDE","canonical_record":{"source":{"id":"2308.12141","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.MM","submitted_at":"2023-08-23T13:56:38Z","cross_cats_sorted":[],"title_canon_sha256":"2f633a8c356bc898989058ed231e58675606d6e8dee4f0a08a38f8fc2996e63e","abstract_canon_sha256":"8fa4ca90881661ca1b9a5c656a173b615c68edf52fb2c6e5f28b825b84ec6b07"},"schema_version":"1.0"},"canonical_sha256":"898037c064f999b701adf2d9c1e863135eaddaba039aafe0248cb22be05aa29a","source":{"kind":"arxiv","id":"2308.12141","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2308.12141","created_at":"2026-07-05T06:44:00Z"},{"alias_kind":"arxiv_version","alias_value":"2308.12141v1","created_at":"2026-07-05T06:44:00Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2308.12141","created_at":"2026-07-05T06:44:00Z"},{"alias_kind":"pith_short_12","alias_value":"RGADPQDE7GM3","created_at":"2026-07-05T06:44:00Z"},{"alias_kind":"pith_short_16","alias_value":"RGADPQDE7GM3OANN","created_at":"2026-07-05T06:44:00Z"},{"alias_kind":"pith_short_8","alias_value":"RGADPQDE","created_at":"2026-07-05T06:44:00Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2023:RGADPQDE7GM3OANN6LM4D2DDCN","target":"record","payload":{"canonical_record":{"source":{"id":"2308.12141","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.MM","submitted_at":"2023-08-23T13:56:38Z","cross_cats_sorted":[],"title_canon_sha256":"2f633a8c356bc898989058ed231e58675606d6e8dee4f0a08a38f8fc2996e63e","abstract_canon_sha256":"8fa4ca90881661ca1b9a5c656a173b615c68edf52fb2c6e5f28b825b84ec6b07"},"schema_version":"1.0"},"canonical_sha256":"898037c064f999b701adf2d9c1e863135eaddaba039aafe0248cb22be05aa29a","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T06:44:00.297051Z","signature_b64":"xyRT8zb/vgMpUP9WmXKoYLXOf7R0jtTp0lDxJZDLsucHMxdV8lhgd1RmEJnW/pPJ4zjNDliEgyRYWGOPFzv4Dw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"898037c064f999b701adf2d9c1e863135eaddaba039aafe0248cb22be05aa29a","last_reissued_at":"2026-07-05T06:44:00.296574Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T06:44:00.296574Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2308.12141","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":"2026-07-05T06:44:00Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"oXRxEcpRziOEAUwsoCSj8EoLYRAdHYFdFfPk1AD6/UAIVLQryzIXcOacm6OLhUkjNjT3VPOfQuk8Lk5ysLHVAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-10T22:41:14.249508Z"},"content_sha256":"31ee4c2152e8623677c926b8f668e2f9320457e877b9d21301997a36387d4876","schema_version":"1.0","event_id":"sha256:31ee4c2152e8623677c926b8f668e2f9320457e877b9d21301997a36387d4876"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2023:RGADPQDE7GM3OANN6LM4D2DDCN","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Aparecium: Revealing Secrets from Physical Photographs","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cs.MM","authors_text":"Jie Zhang, Jingtao Li, Nenghai Yu, Weiming Zhang, Zhe Lei","submitted_at":"2023-08-23T13:56:38Z","abstract_excerpt":"Watermarking is a crucial tool for safeguarding copyrights and can serve as a more aesthetically pleasing alternative to QR codes. In recent years, watermarking methods based on deep learning have proved superior robustness against complex physical distortions than traditional watermarking methods. However, they have certain limitations that render them less effective in practice. For instance, current solutions necessitate physical photographs to be rectangular for accurate localization, cannot handle physical bending or folding, and require the hidden area to be completely captured at a clos"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2308.12141","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/2308.12141/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":"2026-07-05T06:44:00Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"HRbBns/cPd7Jt/K7BC3VK2HMkQIuPArY5J6o1mX4/BOTd1nD5UJan9V1BdH8cq0voTRcV5PpjJT/WcHQhE5mDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-10T22:41:14.250052Z"},"content_sha256":"30117735d86ac239409d9edfc80d3397ab52449ee799a48a77750088cc91e2c7","schema_version":"1.0","event_id":"sha256:30117735d86ac239409d9edfc80d3397ab52449ee799a48a77750088cc91e2c7"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/RGADPQDE7GM3OANN6LM4D2DDCN/bundle.json","state_url":"https://pith.science/pith/RGADPQDE7GM3OANN6LM4D2DDCN/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/RGADPQDE7GM3OANN6LM4D2DDCN/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":"2026-08-10T22:41:14Z","links":{"resolver":"https://pith.science/pith/RGADPQDE7GM3OANN6LM4D2DDCN","bundle":"https://pith.science/pith/RGADPQDE7GM3OANN6LM4D2DDCN/bundle.json","state":"https://pith.science/pith/RGADPQDE7GM3OANN6LM4D2DDCN/state.json","well_known_bundle":"https://pith.science/.well-known/pith/RGADPQDE7GM3OANN6LM4D2DDCN/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2023:RGADPQDE7GM3OANN6LM4D2DDCN","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":"8fa4ca90881661ca1b9a5c656a173b615c68edf52fb2c6e5f28b825b84ec6b07","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.MM","submitted_at":"2023-08-23T13:56:38Z","title_canon_sha256":"2f633a8c356bc898989058ed231e58675606d6e8dee4f0a08a38f8fc2996e63e"},"schema_version":"1.0","source":{"id":"2308.12141","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2308.12141","created_at":"2026-07-05T06:44:00Z"},{"alias_kind":"arxiv_version","alias_value":"2308.12141v1","created_at":"2026-07-05T06:44:00Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2308.12141","created_at":"2026-07-05T06:44:00Z"},{"alias_kind":"pith_short_12","alias_value":"RGADPQDE7GM3","created_at":"2026-07-05T06:44:00Z"},{"alias_kind":"pith_short_16","alias_value":"RGADPQDE7GM3OANN","created_at":"2026-07-05T06:44:00Z"},{"alias_kind":"pith_short_8","alias_value":"RGADPQDE","created_at":"2026-07-05T06:44:00Z"}],"graph_snapshots":[{"event_id":"sha256:30117735d86ac239409d9edfc80d3397ab52449ee799a48a77750088cc91e2c7","target":"graph","created_at":"2026-07-05T06:44:00Z","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/2308.12141/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Watermarking is a crucial tool for safeguarding copyrights and can serve as a more aesthetically pleasing alternative to QR codes. In recent years, watermarking methods based on deep learning have proved superior robustness against complex physical distortions than traditional watermarking methods. However, they have certain limitations that render them less effective in practice. For instance, current solutions necessitate physical photographs to be rectangular for accurate localization, cannot handle physical bending or folding, and require the hidden area to be completely captured at a clos","authors_text":"Jie Zhang, Jingtao Li, Nenghai Yu, Weiming Zhang, Zhe Lei","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.MM","submitted_at":"2023-08-23T13:56:38Z","title":"Aparecium: Revealing Secrets from Physical Photographs"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2308.12141","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":"sha256:31ee4c2152e8623677c926b8f668e2f9320457e877b9d21301997a36387d4876","target":"record","created_at":"2026-07-05T06:44:00Z","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":"8fa4ca90881661ca1b9a5c656a173b615c68edf52fb2c6e5f28b825b84ec6b07","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.MM","submitted_at":"2023-08-23T13:56:38Z","title_canon_sha256":"2f633a8c356bc898989058ed231e58675606d6e8dee4f0a08a38f8fc2996e63e"},"schema_version":"1.0","source":{"id":"2308.12141","kind":"arxiv","version":1}},"canonical_sha256":"898037c064f999b701adf2d9c1e863135eaddaba039aafe0248cb22be05aa29a","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"898037c064f999b701adf2d9c1e863135eaddaba039aafe0248cb22be05aa29a","first_computed_at":"2026-07-05T06:44:00.296574Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T06:44:00.296574Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"xyRT8zb/vgMpUP9WmXKoYLXOf7R0jtTp0lDxJZDLsucHMxdV8lhgd1RmEJnW/pPJ4zjNDliEgyRYWGOPFzv4Dw==","signature_status":"signed_v1","signed_at":"2026-07-05T06:44:00.297051Z","signed_message":"canonical_sha256_bytes"},"source_id":"2308.12141","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:31ee4c2152e8623677c926b8f668e2f9320457e877b9d21301997a36387d4876","sha256:30117735d86ac239409d9edfc80d3397ab52449ee799a48a77750088cc91e2c7"],"state_sha256":"9e07ae409c2d21fc5c14610caf06131bd98cbcad0dd9be4c5033e0610ebf9003"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"CsjoksoU7p3S13G0wMv7gCvcYMo8bqgS6SuAAmzDwOwaAV8mY9bo9p9bTYeH9QVxLRlFM+x/C/S4HOMNhVz4AQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-10T22:41:14.254425Z","bundle_sha256":"6efa4d12e275ea5c493a35a534c3b5b5b29d1133e4dcf17d2ac1491647e8fbd0"}}