{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2014:XGUT4US3TT4MWCEZKK6KFL6FTW","short_pith_number":"pith:XGUT4US3","canonical_record":{"source":{"id":"1402.0279","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2014-02-03T04:23:58Z","cross_cats_sorted":[],"title_canon_sha256":"3366638b238ec87cfbe0b6bbe71c2cb1bc771b5988920758b85f4de6171cd04d","abstract_canon_sha256":"146d271763dcbab0e91f43d29dbd32b2b40ab6680dae00176eaeae97c8802de8"},"schema_version":"1.0"},"canonical_sha256":"b9a93e525b9cf8cb089952bca2afc59d9f9db57b1d1301e804c7f531a943cdac","source":{"kind":"arxiv","id":"1402.0279","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1402.0279","created_at":"2026-05-18T00:30:49Z"},{"alias_kind":"arxiv_version","alias_value":"1402.0279v1","created_at":"2026-05-18T00:30:49Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1402.0279","created_at":"2026-05-18T00:30:49Z"},{"alias_kind":"pith_short_12","alias_value":"XGUT4US3TT4M","created_at":"2026-05-18T12:28:57Z"},{"alias_kind":"pith_short_16","alias_value":"XGUT4US3TT4MWCEZ","created_at":"2026-05-18T12:28:57Z"},{"alias_kind":"pith_short_8","alias_value":"XGUT4US3","created_at":"2026-05-18T12:28:57Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2014:XGUT4US3TT4MWCEZKK6KFL6FTW","target":"record","payload":{"canonical_record":{"source":{"id":"1402.0279","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2014-02-03T04:23:58Z","cross_cats_sorted":[],"title_canon_sha256":"3366638b238ec87cfbe0b6bbe71c2cb1bc771b5988920758b85f4de6171cd04d","abstract_canon_sha256":"146d271763dcbab0e91f43d29dbd32b2b40ab6680dae00176eaeae97c8802de8"},"schema_version":"1.0"},"canonical_sha256":"b9a93e525b9cf8cb089952bca2afc59d9f9db57b1d1301e804c7f531a943cdac","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:30:49.674933Z","signature_b64":"c488PBv6T9j10uEW13Jidu5vjpK8qaZfYyHYEj3VuHRv6JE/Ud8ft675bNLDnGx2CtWut8Hd0VeQENon5kBTDA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"b9a93e525b9cf8cb089952bca2afc59d9f9db57b1d1301e804c7f531a943cdac","last_reissued_at":"2026-05-18T00:30:49.674361Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:30:49.674361Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1402.0279","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":"2026-05-18T00:30:49Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"2+6VeamUU9kdpQ/xnHEfDmpOIjLys3J1QO/zWLNeh2gK5Fuh2N1tHfiS3PEE/wVIz43n6FkJqmqUKU8/RI7ZDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-30T23:36:13.901414Z"},"content_sha256":"8fc326b27a9c1544890ee293b6f4435fbc19d8e5ea4cf85999b1f3ce9d6eebfc","schema_version":"1.0","event_id":"sha256:8fc326b27a9c1544890ee293b6f4435fbc19d8e5ea4cf85999b1f3ce9d6eebfc"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2014:XGUT4US3TT4MWCEZKK6KFL6FTW","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Light Focusing and Two-Dimensional Imaging Through Scattering Media using the Photoacoustic Transmission-Matrix with an Ultrasound Array","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"physics.optics","authors_text":"Emmanuel Bossy, Jerome Gateau, Ori Katz, Sylvain Gigan, Thomas Chaigne","submitted_at":"2014-02-03T04:23:58Z","abstract_excerpt":"We implement the photoacoustic transmission-matrix approach on a two-dimensional photoacoustic imaging system, using a 15 MHz linear ultrasound array. Using a black leaf skeleton as a complex absorbing structure, we demonstrate that the photoacoustic transmission-matrix approach allows to reveal structural features that are invisible in conventional photoacoustic images, as well as to selectively control light focusing on absorbing targets, leading to a local enhancement of the photoacoustic signal."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1402.0279","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":"2026-05-18T00:30:49Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ZmZwctqwPYZAXdc4x+/ok4/rY9wgV6nDn14YYgdN5Jb5rNkifDCnnd9en91d/+mHwE8B1P6NNLV8pLsekIc4Aw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-30T23:36:13.901771Z"},"content_sha256":"e6cda8c50a931d827d9d53d581b373818184648d38e6ad05063f853dd9c33d91","schema_version":"1.0","event_id":"sha256:e6cda8c50a931d827d9d53d581b373818184648d38e6ad05063f853dd9c33d91"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/XGUT4US3TT4MWCEZKK6KFL6FTW/bundle.json","state_url":"https://pith.science/pith/XGUT4US3TT4MWCEZKK6KFL6FTW/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/XGUT4US3TT4MWCEZKK6KFL6FTW/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":"2026-05-30T23:36:13Z","links":{"resolver":"https://pith.science/pith/XGUT4US3TT4MWCEZKK6KFL6FTW","bundle":"https://pith.science/pith/XGUT4US3TT4MWCEZKK6KFL6FTW/bundle.json","state":"https://pith.science/pith/XGUT4US3TT4MWCEZKK6KFL6FTW/state.json","well_known_bundle":"https://pith.science/.well-known/pith/XGUT4US3TT4MWCEZKK6KFL6FTW/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2014:XGUT4US3TT4MWCEZKK6KFL6FTW","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":"146d271763dcbab0e91f43d29dbd32b2b40ab6680dae00176eaeae97c8802de8","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2014-02-03T04:23:58Z","title_canon_sha256":"3366638b238ec87cfbe0b6bbe71c2cb1bc771b5988920758b85f4de6171cd04d"},"schema_version":"1.0","source":{"id":"1402.0279","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1402.0279","created_at":"2026-05-18T00:30:49Z"},{"alias_kind":"arxiv_version","alias_value":"1402.0279v1","created_at":"2026-05-18T00:30:49Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1402.0279","created_at":"2026-05-18T00:30:49Z"},{"alias_kind":"pith_short_12","alias_value":"XGUT4US3TT4M","created_at":"2026-05-18T12:28:57Z"},{"alias_kind":"pith_short_16","alias_value":"XGUT4US3TT4MWCEZ","created_at":"2026-05-18T12:28:57Z"},{"alias_kind":"pith_short_8","alias_value":"XGUT4US3","created_at":"2026-05-18T12:28:57Z"}],"graph_snapshots":[{"event_id":"sha256:e6cda8c50a931d827d9d53d581b373818184648d38e6ad05063f853dd9c33d91","target":"graph","created_at":"2026-05-18T00:30:49Z","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 implement the photoacoustic transmission-matrix approach on a two-dimensional photoacoustic imaging system, using a 15 MHz linear ultrasound array. Using a black leaf skeleton as a complex absorbing structure, we demonstrate that the photoacoustic transmission-matrix approach allows to reveal structural features that are invisible in conventional photoacoustic images, as well as to selectively control light focusing on absorbing targets, leading to a local enhancement of the photoacoustic signal.","authors_text":"Emmanuel Bossy, Jerome Gateau, Ori Katz, Sylvain Gigan, Thomas Chaigne","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2014-02-03T04:23:58Z","title":"Light Focusing and Two-Dimensional Imaging Through Scattering Media using the Photoacoustic Transmission-Matrix with an Ultrasound Array"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1402.0279","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":"sha256:8fc326b27a9c1544890ee293b6f4435fbc19d8e5ea4cf85999b1f3ce9d6eebfc","target":"record","created_at":"2026-05-18T00:30:49Z","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":"146d271763dcbab0e91f43d29dbd32b2b40ab6680dae00176eaeae97c8802de8","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2014-02-03T04:23:58Z","title_canon_sha256":"3366638b238ec87cfbe0b6bbe71c2cb1bc771b5988920758b85f4de6171cd04d"},"schema_version":"1.0","source":{"id":"1402.0279","kind":"arxiv","version":1}},"canonical_sha256":"b9a93e525b9cf8cb089952bca2afc59d9f9db57b1d1301e804c7f531a943cdac","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"b9a93e525b9cf8cb089952bca2afc59d9f9db57b1d1301e804c7f531a943cdac","first_computed_at":"2026-05-18T00:30:49.674361Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:30:49.674361Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"c488PBv6T9j10uEW13Jidu5vjpK8qaZfYyHYEj3VuHRv6JE/Ud8ft675bNLDnGx2CtWut8Hd0VeQENon5kBTDA==","signature_status":"signed_v1","signed_at":"2026-05-18T00:30:49.674933Z","signed_message":"canonical_sha256_bytes"},"source_id":"1402.0279","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:8fc326b27a9c1544890ee293b6f4435fbc19d8e5ea4cf85999b1f3ce9d6eebfc","sha256:e6cda8c50a931d827d9d53d581b373818184648d38e6ad05063f853dd9c33d91"],"state_sha256":"57ac2c7c8fccd5a48cc791f7355526b12a557d6027fe78a062c686ebcbf947f4"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Htq9u2WoHUerKmwURJzxV0kue2c4lm+3gVLtX6514xPrz52tkqj5lPZQytliva3wA5jmr3hfudmQ05nnA5H1DA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-30T23:36:13.904472Z","bundle_sha256":"c77188b598e21bdccb86d97de1402872dfc07b150f961fbde5b2718701ba06c7"}}