{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2017:7A4JYP7WHWB4H3PTW4NJK53F2Y","short_pith_number":"pith:7A4JYP7W","canonical_record":{"source":{"id":"1708.07376","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.med-ph","submitted_at":"2017-08-24T12:40:47Z","cross_cats_sorted":["physics.app-ph"],"title_canon_sha256":"c3908dd3a46784bc0ed8fc002fc8daa5a44051bbf3f1f56435f8afe52dfb7f12","abstract_canon_sha256":"0e71e310479690e46c5a6025a43a91e4a84d258158baae298e6b172e42612550"},"schema_version":"1.0"},"canonical_sha256":"f8389c3ff63d83c3edf3b71a957765d61ab8e099a2bc255b6fc3c29a42396ca0","source":{"kind":"arxiv","id":"1708.07376","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1708.07376","created_at":"2026-05-18T00:21:51Z"},{"alias_kind":"arxiv_version","alias_value":"1708.07376v2","created_at":"2026-05-18T00:21:51Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1708.07376","created_at":"2026-05-18T00:21:51Z"},{"alias_kind":"pith_short_12","alias_value":"7A4JYP7WHWB4","created_at":"2026-05-18T12:31:03Z"},{"alias_kind":"pith_short_16","alias_value":"7A4JYP7WHWB4H3PT","created_at":"2026-05-18T12:31:03Z"},{"alias_kind":"pith_short_8","alias_value":"7A4JYP7W","created_at":"2026-05-18T12:31:03Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2017:7A4JYP7WHWB4H3PTW4NJK53F2Y","target":"record","payload":{"canonical_record":{"source":{"id":"1708.07376","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.med-ph","submitted_at":"2017-08-24T12:40:47Z","cross_cats_sorted":["physics.app-ph"],"title_canon_sha256":"c3908dd3a46784bc0ed8fc002fc8daa5a44051bbf3f1f56435f8afe52dfb7f12","abstract_canon_sha256":"0e71e310479690e46c5a6025a43a91e4a84d258158baae298e6b172e42612550"},"schema_version":"1.0"},"canonical_sha256":"f8389c3ff63d83c3edf3b71a957765d61ab8e099a2bc255b6fc3c29a42396ca0","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:21:51.052254Z","signature_b64":"Dd8ne5i0CUJ4Ej/lJxnPQ79O9FYZJQQ5Nhx7HtMxHqqMY8pryEOxmkV7jtBWPtbDQYNEV6ULQtu22SeNpdHeBg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"f8389c3ff63d83c3edf3b71a957765d61ab8e099a2bc255b6fc3c29a42396ca0","last_reissued_at":"2026-05-18T00:21:51.051599Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:21:51.051599Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1708.07376","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T00:21:51Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ikEF8/E87pEoPGOmut56OUJh7M8E6l72sePeayJxklJV3JATjiRBwK4doM5Ltdd8nd4Flh1lf8qtmJRJbrGKBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-11T23:50:24.230802Z"},"content_sha256":"160987419d4c2bb6ae1e0cad720e8cdbe598c476600900c9932b991690b36dc4","schema_version":"1.0","event_id":"sha256:160987419d4c2bb6ae1e0cad720e8cdbe598c476600900c9932b991690b36dc4"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2017:7A4JYP7WHWB4H3PTW4NJK53F2Y","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Assessment of toxic metals and hazardous substances in tattoo inks using Sy-XRF, AAS and Raman spectroscopy","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["physics.app-ph"],"primary_cat":"physics.med-ph","authors_text":"Ana Guilherme Buzanich, Cl\\'audia Afonso, Helena Louren\\c{c}o, Maria Lu\\'isa Carvalho, Marta Manso, Martin Radtke, Mauro Guerra, Sofia Pessanha, Uwe Reinholz","submitted_at":"2017-08-24T12:40:47Z","abstract_excerpt":"A set of tattoo inks from a top brand was analysed by means of Synchrotron-based X-ray Fluorescence spectrometry (Sy-XRF), Atomic Absorption spectrometry (AAS) and Raman Spectroscopy to investigate the presence of toxic metals and hazardous substances. Quantitative analysis shows that Cr, Cu and Pb content is above the maximum allowed levels established by the Council of Europe in the resolution ResAP(2008)1 on requirements and criteria for the safety of tattoos and permanent make-up. Raman analysis reveals the presence of pigments Blue 15, Green 7 and Violet 23 in blue, green and violet inks "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1708.07376","kind":"arxiv","version":2},"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":"2026-05-18T00:21:51Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"NpDfQeZvPr65X4Rs54IT6ogxY0+8zgeCXMhH+YvKWYSBR7XILPtYw5l/UL5VIqnlH/ddxBrFXHAs6mdrLZC9BA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-11T23:50:24.231529Z"},"content_sha256":"92fd7f146412a79b71789bd578818fae30938207106472dc0d13fa320948d6e1","schema_version":"1.0","event_id":"sha256:92fd7f146412a79b71789bd578818fae30938207106472dc0d13fa320948d6e1"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/7A4JYP7WHWB4H3PTW4NJK53F2Y/bundle.json","state_url":"https://pith.science/pith/7A4JYP7WHWB4H3PTW4NJK53F2Y/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/7A4JYP7WHWB4H3PTW4NJK53F2Y/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":"2026-06-11T23:50:24Z","links":{"resolver":"https://pith.science/pith/7A4JYP7WHWB4H3PTW4NJK53F2Y","bundle":"https://pith.science/pith/7A4JYP7WHWB4H3PTW4NJK53F2Y/bundle.json","state":"https://pith.science/pith/7A4JYP7WHWB4H3PTW4NJK53F2Y/state.json","well_known_bundle":"https://pith.science/.well-known/pith/7A4JYP7WHWB4H3PTW4NJK53F2Y/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:7A4JYP7WHWB4H3PTW4NJK53F2Y","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":"0e71e310479690e46c5a6025a43a91e4a84d258158baae298e6b172e42612550","cross_cats_sorted":["physics.app-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.med-ph","submitted_at":"2017-08-24T12:40:47Z","title_canon_sha256":"c3908dd3a46784bc0ed8fc002fc8daa5a44051bbf3f1f56435f8afe52dfb7f12"},"schema_version":"1.0","source":{"id":"1708.07376","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1708.07376","created_at":"2026-05-18T00:21:51Z"},{"alias_kind":"arxiv_version","alias_value":"1708.07376v2","created_at":"2026-05-18T00:21:51Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1708.07376","created_at":"2026-05-18T00:21:51Z"},{"alias_kind":"pith_short_12","alias_value":"7A4JYP7WHWB4","created_at":"2026-05-18T12:31:03Z"},{"alias_kind":"pith_short_16","alias_value":"7A4JYP7WHWB4H3PT","created_at":"2026-05-18T12:31:03Z"},{"alias_kind":"pith_short_8","alias_value":"7A4JYP7W","created_at":"2026-05-18T12:31:03Z"}],"graph_snapshots":[{"event_id":"sha256:92fd7f146412a79b71789bd578818fae30938207106472dc0d13fa320948d6e1","target":"graph","created_at":"2026-05-18T00:21:51Z","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":"A set of tattoo inks from a top brand was analysed by means of Synchrotron-based X-ray Fluorescence spectrometry (Sy-XRF), Atomic Absorption spectrometry (AAS) and Raman Spectroscopy to investigate the presence of toxic metals and hazardous substances. Quantitative analysis shows that Cr, Cu and Pb content is above the maximum allowed levels established by the Council of Europe in the resolution ResAP(2008)1 on requirements and criteria for the safety of tattoos and permanent make-up. Raman analysis reveals the presence of pigments Blue 15, Green 7 and Violet 23 in blue, green and violet inks ","authors_text":"Ana Guilherme Buzanich, Cl\\'audia Afonso, Helena Louren\\c{c}o, Maria Lu\\'isa Carvalho, Marta Manso, Martin Radtke, Mauro Guerra, Sofia Pessanha, Uwe Reinholz","cross_cats":["physics.app-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.med-ph","submitted_at":"2017-08-24T12:40:47Z","title":"Assessment of toxic metals and hazardous substances in tattoo inks using Sy-XRF, AAS and Raman spectroscopy"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1708.07376","kind":"arxiv","version":2},"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":"sha256:160987419d4c2bb6ae1e0cad720e8cdbe598c476600900c9932b991690b36dc4","target":"record","created_at":"2026-05-18T00:21:51Z","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":"0e71e310479690e46c5a6025a43a91e4a84d258158baae298e6b172e42612550","cross_cats_sorted":["physics.app-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.med-ph","submitted_at":"2017-08-24T12:40:47Z","title_canon_sha256":"c3908dd3a46784bc0ed8fc002fc8daa5a44051bbf3f1f56435f8afe52dfb7f12"},"schema_version":"1.0","source":{"id":"1708.07376","kind":"arxiv","version":2}},"canonical_sha256":"f8389c3ff63d83c3edf3b71a957765d61ab8e099a2bc255b6fc3c29a42396ca0","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"f8389c3ff63d83c3edf3b71a957765d61ab8e099a2bc255b6fc3c29a42396ca0","first_computed_at":"2026-05-18T00:21:51.051599Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:21:51.051599Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Dd8ne5i0CUJ4Ej/lJxnPQ79O9FYZJQQ5Nhx7HtMxHqqMY8pryEOxmkV7jtBWPtbDQYNEV6ULQtu22SeNpdHeBg==","signature_status":"signed_v1","signed_at":"2026-05-18T00:21:51.052254Z","signed_message":"canonical_sha256_bytes"},"source_id":"1708.07376","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:160987419d4c2bb6ae1e0cad720e8cdbe598c476600900c9932b991690b36dc4","sha256:92fd7f146412a79b71789bd578818fae30938207106472dc0d13fa320948d6e1"],"state_sha256":"012e02c68d12d4159946970fc718419e1b8a33100f0d7ba4b61452db41822a29"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"FURDfpiQKYlisV5AKZQPvy4cAGXGsiqvuBrUg75amzxgWG21CGMTkwCqzVV1ZK8pU7GvXNK4dzmT2MRzYpJZDA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-11T23:50:24.235712Z","bundle_sha256":"65d2c412e2e658d8911fc0bf564d41132d939631fa57c2fd978e4f50a0e61b9e"}}