{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2020:5QX3DTQZUKQ2HUUL6FZYTBHWXU","short_pith_number":"pith:5QX3DTQZ","canonical_record":{"source":{"id":"2007.05324","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.IV","submitted_at":"2020-07-10T12:02:57Z","cross_cats_sorted":["cs.CV"],"title_canon_sha256":"60c20b7fdb2b4901b0eef8508c247a7d90245fbb8a2052988cba1ce3b97771eb","abstract_canon_sha256":"95ca6394643931b41a2a26b21c76de967938ccbfeb09181e17f4eb211f1bc3d2"},"schema_version":"1.0"},"canonical_sha256":"ec2fb1ce19a2a1a3d28bf1738984f6bd3c3cc38ab35c118658f65b5b91241f33","source":{"kind":"arxiv","id":"2007.05324","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2007.05324","created_at":"2026-07-05T01:56:43Z"},{"alias_kind":"arxiv_version","alias_value":"2007.05324v1","created_at":"2026-07-05T01:56:43Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2007.05324","created_at":"2026-07-05T01:56:43Z"},{"alias_kind":"pith_short_12","alias_value":"5QX3DTQZUKQ2","created_at":"2026-07-05T01:56:43Z"},{"alias_kind":"pith_short_16","alias_value":"5QX3DTQZUKQ2HUUL","created_at":"2026-07-05T01:56:43Z"},{"alias_kind":"pith_short_8","alias_value":"5QX3DTQZ","created_at":"2026-07-05T01:56:43Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2020:5QX3DTQZUKQ2HUUL6FZYTBHWXU","target":"record","payload":{"canonical_record":{"source":{"id":"2007.05324","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.IV","submitted_at":"2020-07-10T12:02:57Z","cross_cats_sorted":["cs.CV"],"title_canon_sha256":"60c20b7fdb2b4901b0eef8508c247a7d90245fbb8a2052988cba1ce3b97771eb","abstract_canon_sha256":"95ca6394643931b41a2a26b21c76de967938ccbfeb09181e17f4eb211f1bc3d2"},"schema_version":"1.0"},"canonical_sha256":"ec2fb1ce19a2a1a3d28bf1738984f6bd3c3cc38ab35c118658f65b5b91241f33","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T01:56:43.075455Z","signature_b64":"UWYkPa3NXrICQGgluLrlPu3kKRAFw3pZ5N24xeHrr+1yT8BklRSnEJQr3X+LhCqRKRExei8GMgqoYng4gNtVCw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"ec2fb1ce19a2a1a3d28bf1738984f6bd3c3cc38ab35c118658f65b5b91241f33","last_reissued_at":"2026-07-05T01:56:43.074969Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T01:56:43.074969Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2007.05324","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":"2026-07-05T01:56:43Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"r34M57o0M94mXYzYU2OF/eFjWjKR+mkr3LNxVzvzQqNT9jhcduCkjHtgLD5Bx5l/MNk9i0nvJzo5+tvGXojJAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-08T02:26:30.133988Z"},"content_sha256":"e2cc90877405cf2396f92fdbcbd08364a48ab62fc2bb6bbd07f4a68e9d5b98a1","schema_version":"1.0","event_id":"sha256:e2cc90877405cf2396f92fdbcbd08364a48ab62fc2bb6bbd07f4a68e9d5b98a1"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2020:5QX3DTQZUKQ2HUUL6FZYTBHWXU","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"A distance-based loss for smooth and continuous skin layer segmentation in optoacoustic images","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cs.CV"],"primary_cat":"eess.IV","authors_text":"Amirhossein Bayat, Bjoern Menze, Florian Kofler, Giles Tetteh, Hailong He, Ivan Ezhov, Johannes C. Paetzold, Stefan Gerl, Suprosanna Shit, Vasilis Ntziachristos","submitted_at":"2020-07-10T12:02:57Z","abstract_excerpt":"Raster-scan optoacoustic mesoscopy (RSOM) is a powerful, non-invasive optical imaging technique for functional, anatomical, and molecular skin and tissue analysis. However, both the manual and the automated analysis of such images are challenging, because the RSOM images have very low contrast, poor signal to noise ratio, and systematic overlaps between the absorption spectra of melanin and hemoglobin. Nonetheless, the segmentation of the epidermis layer is a crucial step for many downstream medical and diagnostic tasks, such as vessel segmentation or monitoring of cancer progression. We propo"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2007.05324","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/2007.05324/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":"2026-07-05T01:56:43Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Ihp24yaHngHG0J49NKyOI/gcI3IzUJNQa3484MN1FGPqhrxqw1IHluSPFy8JZ+eRluC9mNv5Ch6CFNzbZg02AQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-08T02:26:30.134361Z"},"content_sha256":"ee5716e08514fec7e9743c9297079a7c9210add31315d8083dd30bb7c7e52693","schema_version":"1.0","event_id":"sha256:ee5716e08514fec7e9743c9297079a7c9210add31315d8083dd30bb7c7e52693"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/5QX3DTQZUKQ2HUUL6FZYTBHWXU/bundle.json","state_url":"https://pith.science/pith/5QX3DTQZUKQ2HUUL6FZYTBHWXU/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/5QX3DTQZUKQ2HUUL6FZYTBHWXU/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":"2026-07-08T02:26:30Z","links":{"resolver":"https://pith.science/pith/5QX3DTQZUKQ2HUUL6FZYTBHWXU","bundle":"https://pith.science/pith/5QX3DTQZUKQ2HUUL6FZYTBHWXU/bundle.json","state":"https://pith.science/pith/5QX3DTQZUKQ2HUUL6FZYTBHWXU/state.json","well_known_bundle":"https://pith.science/.well-known/pith/5QX3DTQZUKQ2HUUL6FZYTBHWXU/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2020:5QX3DTQZUKQ2HUUL6FZYTBHWXU","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":"95ca6394643931b41a2a26b21c76de967938ccbfeb09181e17f4eb211f1bc3d2","cross_cats_sorted":["cs.CV"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.IV","submitted_at":"2020-07-10T12:02:57Z","title_canon_sha256":"60c20b7fdb2b4901b0eef8508c247a7d90245fbb8a2052988cba1ce3b97771eb"},"schema_version":"1.0","source":{"id":"2007.05324","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2007.05324","created_at":"2026-07-05T01:56:43Z"},{"alias_kind":"arxiv_version","alias_value":"2007.05324v1","created_at":"2026-07-05T01:56:43Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2007.05324","created_at":"2026-07-05T01:56:43Z"},{"alias_kind":"pith_short_12","alias_value":"5QX3DTQZUKQ2","created_at":"2026-07-05T01:56:43Z"},{"alias_kind":"pith_short_16","alias_value":"5QX3DTQZUKQ2HUUL","created_at":"2026-07-05T01:56:43Z"},{"alias_kind":"pith_short_8","alias_value":"5QX3DTQZ","created_at":"2026-07-05T01:56:43Z"}],"graph_snapshots":[{"event_id":"sha256:ee5716e08514fec7e9743c9297079a7c9210add31315d8083dd30bb7c7e52693","target":"graph","created_at":"2026-07-05T01:56:43Z","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/2007.05324/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Raster-scan optoacoustic mesoscopy (RSOM) is a powerful, non-invasive optical imaging technique for functional, anatomical, and molecular skin and tissue analysis. However, both the manual and the automated analysis of such images are challenging, because the RSOM images have very low contrast, poor signal to noise ratio, and systematic overlaps between the absorption spectra of melanin and hemoglobin. Nonetheless, the segmentation of the epidermis layer is a crucial step for many downstream medical and diagnostic tasks, such as vessel segmentation or monitoring of cancer progression. We propo","authors_text":"Amirhossein Bayat, Bjoern Menze, Florian Kofler, Giles Tetteh, Hailong He, Ivan Ezhov, Johannes C. Paetzold, Stefan Gerl, Suprosanna Shit, Vasilis Ntziachristos","cross_cats":["cs.CV"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.IV","submitted_at":"2020-07-10T12:02:57Z","title":"A distance-based loss for smooth and continuous skin layer segmentation in optoacoustic images"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2007.05324","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:e2cc90877405cf2396f92fdbcbd08364a48ab62fc2bb6bbd07f4a68e9d5b98a1","target":"record","created_at":"2026-07-05T01:56:43Z","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":"95ca6394643931b41a2a26b21c76de967938ccbfeb09181e17f4eb211f1bc3d2","cross_cats_sorted":["cs.CV"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.IV","submitted_at":"2020-07-10T12:02:57Z","title_canon_sha256":"60c20b7fdb2b4901b0eef8508c247a7d90245fbb8a2052988cba1ce3b97771eb"},"schema_version":"1.0","source":{"id":"2007.05324","kind":"arxiv","version":1}},"canonical_sha256":"ec2fb1ce19a2a1a3d28bf1738984f6bd3c3cc38ab35c118658f65b5b91241f33","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"ec2fb1ce19a2a1a3d28bf1738984f6bd3c3cc38ab35c118658f65b5b91241f33","first_computed_at":"2026-07-05T01:56:43.074969Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T01:56:43.074969Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"UWYkPa3NXrICQGgluLrlPu3kKRAFw3pZ5N24xeHrr+1yT8BklRSnEJQr3X+LhCqRKRExei8GMgqoYng4gNtVCw==","signature_status":"signed_v1","signed_at":"2026-07-05T01:56:43.075455Z","signed_message":"canonical_sha256_bytes"},"source_id":"2007.05324","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:e2cc90877405cf2396f92fdbcbd08364a48ab62fc2bb6bbd07f4a68e9d5b98a1","sha256:ee5716e08514fec7e9743c9297079a7c9210add31315d8083dd30bb7c7e52693"],"state_sha256":"43ffc834c3b43c1384329603230eb19987f92c9c9ae05f3c40faa9932aaa2d59"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Nc5fwYNlrHcrjyjgAHgJVx9EOIuL5Q9GBxCF6ylMT6Uz5Mlgudm6Wfe9Ta2lbv5NiZ4cPXZ57D19Hj85wuPLDA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-08T02:26:30.137836Z","bundle_sha256":"d93d30d01fee0037724fde3e520849f910e7a04890b623e8688988aeb0b4c954"}}