{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2011:AIZQHTR7VDKPINBHL2EICWUY2H","short_pith_number":"pith:AIZQHTR7","canonical_record":{"source":{"id":"1105.2517","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.bio-ph","submitted_at":"2011-05-12T16:03:52Z","cross_cats_sorted":["physics.acc-ph","physics.med-ph","physics.plasm-ph"],"title_canon_sha256":"a64b3eef1cca9ef49cbcd37c0e32126aa0477989f9d4acb7ade780c6822d933d","abstract_canon_sha256":"c73e0fa4810a906a299489573a2724e37b774fec0b119f54df16e05bb4e6a267"},"schema_version":"1.0"},"canonical_sha256":"023303ce3fa8d4f434275e88815a98d1d664e288e8828e10dfeb31af46ae06f0","source":{"kind":"arxiv","id":"1105.2517","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1105.2517","created_at":"2026-05-18T04:22:10Z"},{"alias_kind":"arxiv_version","alias_value":"1105.2517v1","created_at":"2026-05-18T04:22:10Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1105.2517","created_at":"2026-05-18T04:22:10Z"},{"alias_kind":"pith_short_12","alias_value":"AIZQHTR7VDKP","created_at":"2026-05-18T12:26:24Z"},{"alias_kind":"pith_short_16","alias_value":"AIZQHTR7VDKPINBH","created_at":"2026-05-18T12:26:24Z"},{"alias_kind":"pith_short_8","alias_value":"AIZQHTR7","created_at":"2026-05-18T12:26:24Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2011:AIZQHTR7VDKPINBHL2EICWUY2H","target":"record","payload":{"canonical_record":{"source":{"id":"1105.2517","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.bio-ph","submitted_at":"2011-05-12T16:03:52Z","cross_cats_sorted":["physics.acc-ph","physics.med-ph","physics.plasm-ph"],"title_canon_sha256":"a64b3eef1cca9ef49cbcd37c0e32126aa0477989f9d4acb7ade780c6822d933d","abstract_canon_sha256":"c73e0fa4810a906a299489573a2724e37b774fec0b119f54df16e05bb4e6a267"},"schema_version":"1.0"},"canonical_sha256":"023303ce3fa8d4f434275e88815a98d1d664e288e8828e10dfeb31af46ae06f0","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T04:22:10.494560Z","signature_b64":"188vxGkUS/rwW7IgNj93uSnfQoyDmuCC7ET59Az0YDxxF0BfqbPENpOnXJ2ci9JF30O4DCDJMfbBQk58HiDmDQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"023303ce3fa8d4f434275e88815a98d1d664e288e8828e10dfeb31af46ae06f0","last_reissued_at":"2026-05-18T04:22:10.493888Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T04:22:10.493888Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1105.2517","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":"2026-05-18T04:22:10Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"SDASJC1/UcINp0JP7XFS3JDJ6NvlIHEHYWQHS1Rc45V1ym7GFGYgqYMjt8Gq6FxrmTGehvkPd2nI8iTWEbkxAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T02:58:26.911778Z"},"content_sha256":"c3faf22f164f6a99116060e0dcb5534ca56c2bfc6ec29d16859f729891c2088b","schema_version":"1.0","event_id":"sha256:c3faf22f164f6a99116060e0dcb5534ca56c2bfc6ec29d16859f729891c2088b"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2011:AIZQHTR7VDKPINBHL2EICWUY2H","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"X-ray phase contrast imaging of biological specimens with tabletop synchrotron radiation","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["physics.acc-ph","physics.med-ph","physics.plasm-ph"],"primary_cat":"physics.bio-ph","authors_text":"A. G. R. Thomas, A. Maksimchuk, C. A. J. Palmer, C. McGuffey, F. Dollar, G. Kalintchenko, J. Schreiber, K. Krushelnick, M. S. Bloom, S. Kneip, S. P. D. Mangles, T. Matsuoka, V. Chvykov, V. Yanovsky, W. Schumaker, Z. Najmudin","submitted_at":"2011-05-12T16:03:52Z","abstract_excerpt":"Since their discovery in 1896, x-rays have had a profound impact on science, medicine and technology. Here we show that the x-rays from a novel tabletop source of bright coherent synchrotron radiation can be applied to phase contrast imaging of biological specimens, yielding superior image quality and avoiding the need for scarce or expensive conventional sources."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1105.2517","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":"2026-05-18T04:22:10Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"g35L36zs5ffXEfMUQuO1KCviL6bH9YVmhmH3uzga1tRkm4aUaZOkcF0klRF9J3Ra7VbOmySJ6sSrJKhBnNt7Bg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T02:58:26.912408Z"},"content_sha256":"fd0caf25f313d1a495beb619f89a2ce6b7c28ded18fc6edc62f0810955d0c66f","schema_version":"1.0","event_id":"sha256:fd0caf25f313d1a495beb619f89a2ce6b7c28ded18fc6edc62f0810955d0c66f"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/AIZQHTR7VDKPINBHL2EICWUY2H/bundle.json","state_url":"https://pith.science/pith/AIZQHTR7VDKPINBHL2EICWUY2H/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/AIZQHTR7VDKPINBHL2EICWUY2H/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":"2026-05-25T02:58:26Z","links":{"resolver":"https://pith.science/pith/AIZQHTR7VDKPINBHL2EICWUY2H","bundle":"https://pith.science/pith/AIZQHTR7VDKPINBHL2EICWUY2H/bundle.json","state":"https://pith.science/pith/AIZQHTR7VDKPINBHL2EICWUY2H/state.json","well_known_bundle":"https://pith.science/.well-known/pith/AIZQHTR7VDKPINBHL2EICWUY2H/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2011:AIZQHTR7VDKPINBHL2EICWUY2H","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":"c73e0fa4810a906a299489573a2724e37b774fec0b119f54df16e05bb4e6a267","cross_cats_sorted":["physics.acc-ph","physics.med-ph","physics.plasm-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.bio-ph","submitted_at":"2011-05-12T16:03:52Z","title_canon_sha256":"a64b3eef1cca9ef49cbcd37c0e32126aa0477989f9d4acb7ade780c6822d933d"},"schema_version":"1.0","source":{"id":"1105.2517","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1105.2517","created_at":"2026-05-18T04:22:10Z"},{"alias_kind":"arxiv_version","alias_value":"1105.2517v1","created_at":"2026-05-18T04:22:10Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1105.2517","created_at":"2026-05-18T04:22:10Z"},{"alias_kind":"pith_short_12","alias_value":"AIZQHTR7VDKP","created_at":"2026-05-18T12:26:24Z"},{"alias_kind":"pith_short_16","alias_value":"AIZQHTR7VDKPINBH","created_at":"2026-05-18T12:26:24Z"},{"alias_kind":"pith_short_8","alias_value":"AIZQHTR7","created_at":"2026-05-18T12:26:24Z"}],"graph_snapshots":[{"event_id":"sha256:fd0caf25f313d1a495beb619f89a2ce6b7c28ded18fc6edc62f0810955d0c66f","target":"graph","created_at":"2026-05-18T04:22:10Z","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":"Since their discovery in 1896, x-rays have had a profound impact on science, medicine and technology. Here we show that the x-rays from a novel tabletop source of bright coherent synchrotron radiation can be applied to phase contrast imaging of biological specimens, yielding superior image quality and avoiding the need for scarce or expensive conventional sources.","authors_text":"A. G. R. Thomas, A. Maksimchuk, C. A. J. Palmer, C. McGuffey, F. Dollar, G. Kalintchenko, J. Schreiber, K. Krushelnick, M. S. Bloom, S. Kneip, S. P. D. Mangles, T. Matsuoka, V. Chvykov, V. Yanovsky, W. Schumaker, Z. Najmudin","cross_cats":["physics.acc-ph","physics.med-ph","physics.plasm-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.bio-ph","submitted_at":"2011-05-12T16:03:52Z","title":"X-ray phase contrast imaging of biological specimens with tabletop synchrotron radiation"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1105.2517","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:c3faf22f164f6a99116060e0dcb5534ca56c2bfc6ec29d16859f729891c2088b","target":"record","created_at":"2026-05-18T04:22:10Z","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":"c73e0fa4810a906a299489573a2724e37b774fec0b119f54df16e05bb4e6a267","cross_cats_sorted":["physics.acc-ph","physics.med-ph","physics.plasm-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.bio-ph","submitted_at":"2011-05-12T16:03:52Z","title_canon_sha256":"a64b3eef1cca9ef49cbcd37c0e32126aa0477989f9d4acb7ade780c6822d933d"},"schema_version":"1.0","source":{"id":"1105.2517","kind":"arxiv","version":1}},"canonical_sha256":"023303ce3fa8d4f434275e88815a98d1d664e288e8828e10dfeb31af46ae06f0","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"023303ce3fa8d4f434275e88815a98d1d664e288e8828e10dfeb31af46ae06f0","first_computed_at":"2026-05-18T04:22:10.493888Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T04:22:10.493888Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"188vxGkUS/rwW7IgNj93uSnfQoyDmuCC7ET59Az0YDxxF0BfqbPENpOnXJ2ci9JF30O4DCDJMfbBQk58HiDmDQ==","signature_status":"signed_v1","signed_at":"2026-05-18T04:22:10.494560Z","signed_message":"canonical_sha256_bytes"},"source_id":"1105.2517","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:c3faf22f164f6a99116060e0dcb5534ca56c2bfc6ec29d16859f729891c2088b","sha256:fd0caf25f313d1a495beb619f89a2ce6b7c28ded18fc6edc62f0810955d0c66f"],"state_sha256":"83b07f0e3b29418b0ecaf24e460ec3afc0c4fc817be4f169e5cb4191745f7711"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ow0o+5Goe5bqvfYj8/sF/QuFwALCRe7d75d7U6wyNRLWL9cpDUCkWeyhccDDAAVVzHB5Y4L/DNZOE+3gDo+gCQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-25T02:58:26.916080Z","bundle_sha256":"c0dbbb4878619b9d4641a51b1bb7e9ec1a721b4e9d8ef157df0381df5af11faa"}}