{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2020:DXAZ5PYEAVGZEOU44LPTQI2Y2U","short_pith_number":"pith:DXAZ5PYE","canonical_record":{"source":{"id":"2011.09480","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2020-11-18T19:00:01Z","cross_cats_sorted":["cs.CR","cs.ET"],"title_canon_sha256":"cac28968de7860218c02649c99093dc709ff1514f9e74537eee4f063b1ec1099","abstract_canon_sha256":"0cbf8dcbbe33fd0ac967027b464e098fcacfcf9426a5794e47f54cdee8984ded"},"schema_version":"1.0"},"canonical_sha256":"1dc19ebf04054d923a9ce2df382358d53230265e10c6738edb1333527ee5d5c0","source":{"kind":"arxiv","id":"2011.09480","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2011.09480","created_at":"2026-07-05T01:52:49Z"},{"alias_kind":"arxiv_version","alias_value":"2011.09480v1","created_at":"2026-07-05T01:52:49Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2011.09480","created_at":"2026-07-05T01:52:49Z"},{"alias_kind":"pith_short_12","alias_value":"DXAZ5PYEAVGZ","created_at":"2026-07-05T01:52:49Z"},{"alias_kind":"pith_short_16","alias_value":"DXAZ5PYEAVGZEOU4","created_at":"2026-07-05T01:52:49Z"},{"alias_kind":"pith_short_8","alias_value":"DXAZ5PYE","created_at":"2026-07-05T01:52:49Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2020:DXAZ5PYEAVGZEOU44LPTQI2Y2U","target":"record","payload":{"canonical_record":{"source":{"id":"2011.09480","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2020-11-18T19:00:01Z","cross_cats_sorted":["cs.CR","cs.ET"],"title_canon_sha256":"cac28968de7860218c02649c99093dc709ff1514f9e74537eee4f063b1ec1099","abstract_canon_sha256":"0cbf8dcbbe33fd0ac967027b464e098fcacfcf9426a5794e47f54cdee8984ded"},"schema_version":"1.0"},"canonical_sha256":"1dc19ebf04054d923a9ce2df382358d53230265e10c6738edb1333527ee5d5c0","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T01:52:49.139327Z","signature_b64":"6lqJmJGMUC4mGNeioruSjtWMjO+vcVtdZZwfKAIgkeWAWutPCxG+ra2nl3PRuKeqnRdt77iVnnpOtv5gvwfQCQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"1dc19ebf04054d923a9ce2df382358d53230265e10c6738edb1333527ee5d5c0","last_reissued_at":"2026-07-05T01:52:49.138894Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T01:52:49.138894Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2011.09480","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":"2026-07-05T01:52:49Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"yPk/xStTR2Vh4+tAiiezYTA5PPM57gApnvakrW09aKHXwtGnIW8ba+VmUIFRbmfIuSmXnQh5FuLSrlJwm2rZAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-07T09:59:54.948747Z"},"content_sha256":"a43c8afc98038e00de22f4d6f74e01f4836369d884f5ef7aa481a94b8aecb462","schema_version":"1.0","event_id":"sha256:a43c8afc98038e00de22f4d6f74e01f4836369d884f5ef7aa481a94b8aecb462"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2020:DXAZ5PYEAVGZEOU44LPTQI2Y2U","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Experimental implementation of secure anonymous protocols on an eight-user quantum network","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cs.CR","cs.ET"],"primary_cat":"quant-ph","authors_text":"Armanda O. Quintavalle, Bo Liu, Cosmo Lupo, Djeylan Aktas, John G. Rarity, Laurent Kling, Mario Stip\\v{c}evi\\'c, Martin Lon\\v{c}ari\\'c, Natarajan Venkatachalam, Rupert Ursin, Sebastian Philipp Neumann, Siddarth Koduru Joshi, S\\\"oren Wengerowsky, \\v{Z}eljko Samec, Zixin Huang","submitted_at":"2020-11-18T19:00:01Z","abstract_excerpt":"Anonymity in networked communication is vital for many privacy-preserving tasks. Secure key distribution alone is insufficient for high-security communications, often knowing who transmits a message to whom and when must also be kept hidden from an adversary. Here we experimentally demonstrate 5 information-theoretically secure anonymity protocols on an 8 user city-wide quantum network using polarisation-entangled photon pairs. At the heart of these protocols is anonymous broadcasting, which is a cryptographic primitive that allows one user to reveal one bit of information while keeping her id"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2011.09480","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/2011.09480/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":"2026-07-05T01:52:49Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"odwXF4u334LPu2oIbR+fnNkxrKObhBY/bQNGHLl3J4bQdraIl5GeU+YNyLiu/f6UQflH8SC1uFVEwrsH9ujPDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-07T09:59:54.949116Z"},"content_sha256":"b7c9b3f60e3c40b85b6f9a5925e536c9c091ec1b3d54717532619b5b2fe47037","schema_version":"1.0","event_id":"sha256:b7c9b3f60e3c40b85b6f9a5925e536c9c091ec1b3d54717532619b5b2fe47037"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/DXAZ5PYEAVGZEOU44LPTQI2Y2U/bundle.json","state_url":"https://pith.science/pith/DXAZ5PYEAVGZEOU44LPTQI2Y2U/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/DXAZ5PYEAVGZEOU44LPTQI2Y2U/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":"2026-07-07T09:59:54Z","links":{"resolver":"https://pith.science/pith/DXAZ5PYEAVGZEOU44LPTQI2Y2U","bundle":"https://pith.science/pith/DXAZ5PYEAVGZEOU44LPTQI2Y2U/bundle.json","state":"https://pith.science/pith/DXAZ5PYEAVGZEOU44LPTQI2Y2U/state.json","well_known_bundle":"https://pith.science/.well-known/pith/DXAZ5PYEAVGZEOU44LPTQI2Y2U/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2020:DXAZ5PYEAVGZEOU44LPTQI2Y2U","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":"0cbf8dcbbe33fd0ac967027b464e098fcacfcf9426a5794e47f54cdee8984ded","cross_cats_sorted":["cs.CR","cs.ET"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2020-11-18T19:00:01Z","title_canon_sha256":"cac28968de7860218c02649c99093dc709ff1514f9e74537eee4f063b1ec1099"},"schema_version":"1.0","source":{"id":"2011.09480","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2011.09480","created_at":"2026-07-05T01:52:49Z"},{"alias_kind":"arxiv_version","alias_value":"2011.09480v1","created_at":"2026-07-05T01:52:49Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2011.09480","created_at":"2026-07-05T01:52:49Z"},{"alias_kind":"pith_short_12","alias_value":"DXAZ5PYEAVGZ","created_at":"2026-07-05T01:52:49Z"},{"alias_kind":"pith_short_16","alias_value":"DXAZ5PYEAVGZEOU4","created_at":"2026-07-05T01:52:49Z"},{"alias_kind":"pith_short_8","alias_value":"DXAZ5PYE","created_at":"2026-07-05T01:52:49Z"}],"graph_snapshots":[{"event_id":"sha256:b7c9b3f60e3c40b85b6f9a5925e536c9c091ec1b3d54717532619b5b2fe47037","target":"graph","created_at":"2026-07-05T01:52:49Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/2011.09480/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Anonymity in networked communication is vital for many privacy-preserving tasks. Secure key distribution alone is insufficient for high-security communications, often knowing who transmits a message to whom and when must also be kept hidden from an adversary. Here we experimentally demonstrate 5 information-theoretically secure anonymity protocols on an 8 user city-wide quantum network using polarisation-entangled photon pairs. At the heart of these protocols is anonymous broadcasting, which is a cryptographic primitive that allows one user to reveal one bit of information while keeping her id","authors_text":"Armanda O. Quintavalle, Bo Liu, Cosmo Lupo, Djeylan Aktas, John G. Rarity, Laurent Kling, Mario Stip\\v{c}evi\\'c, Martin Lon\\v{c}ari\\'c, Natarajan Venkatachalam, Rupert Ursin, Sebastian Philipp Neumann, Siddarth Koduru Joshi, S\\\"oren Wengerowsky, \\v{Z}eljko Samec, Zixin Huang","cross_cats":["cs.CR","cs.ET"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2020-11-18T19:00:01Z","title":"Experimental implementation of secure anonymous protocols on an eight-user quantum network"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2011.09480","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:a43c8afc98038e00de22f4d6f74e01f4836369d884f5ef7aa481a94b8aecb462","target":"record","created_at":"2026-07-05T01:52:49Z","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":"0cbf8dcbbe33fd0ac967027b464e098fcacfcf9426a5794e47f54cdee8984ded","cross_cats_sorted":["cs.CR","cs.ET"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2020-11-18T19:00:01Z","title_canon_sha256":"cac28968de7860218c02649c99093dc709ff1514f9e74537eee4f063b1ec1099"},"schema_version":"1.0","source":{"id":"2011.09480","kind":"arxiv","version":1}},"canonical_sha256":"1dc19ebf04054d923a9ce2df382358d53230265e10c6738edb1333527ee5d5c0","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"1dc19ebf04054d923a9ce2df382358d53230265e10c6738edb1333527ee5d5c0","first_computed_at":"2026-07-05T01:52:49.138894Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T01:52:49.138894Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"6lqJmJGMUC4mGNeioruSjtWMjO+vcVtdZZwfKAIgkeWAWutPCxG+ra2nl3PRuKeqnRdt77iVnnpOtv5gvwfQCQ==","signature_status":"signed_v1","signed_at":"2026-07-05T01:52:49.139327Z","signed_message":"canonical_sha256_bytes"},"source_id":"2011.09480","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:a43c8afc98038e00de22f4d6f74e01f4836369d884f5ef7aa481a94b8aecb462","sha256:b7c9b3f60e3c40b85b6f9a5925e536c9c091ec1b3d54717532619b5b2fe47037"],"state_sha256":"31a46fa5330a24bb16793a37734de3947f76614e480141bed7aba8fb3fbca028"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"3Tnom29jOk7apTMix/gGfAbeqtb4meXN5I+FMCVfCCSB2R80uvTodiRxvktHeNthr/UU7Gfc9/G5IBs8TjlmAA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-07T09:59:54.951098Z","bundle_sha256":"64b95c812167ff94056d57e70ab92a90a15b5ac03f82e7be01155600826a1c3a"}}