{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2016:IBLZ5OSKGJSY7UVZBFWQFBJIHF","short_pith_number":"pith:IBLZ5OSK","canonical_record":{"source":{"id":"1609.07064","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2016-09-22T16:55:29Z","cross_cats_sorted":[],"title_canon_sha256":"ec4490b4f68a5efc388a139b2e858e82f541ed7dcaec424a8eaf72a984036d61","abstract_canon_sha256":"6d74ba1963367250aaf9f3de9235af4a1a5d5d41a27e90a0b99f134c1cdc2e58"},"schema_version":"1.0"},"canonical_sha256":"40579eba4a32658fd2b9096d028528394d374147026e84514ed89824c65f43c4","source":{"kind":"arxiv","id":"1609.07064","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1609.07064","created_at":"2026-05-18T00:45:06Z"},{"alias_kind":"arxiv_version","alias_value":"1609.07064v2","created_at":"2026-05-18T00:45:06Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1609.07064","created_at":"2026-05-18T00:45:06Z"},{"alias_kind":"pith_short_12","alias_value":"IBLZ5OSKGJSY","created_at":"2026-05-18T12:30:22Z"},{"alias_kind":"pith_short_16","alias_value":"IBLZ5OSKGJSY7UVZ","created_at":"2026-05-18T12:30:22Z"},{"alias_kind":"pith_short_8","alias_value":"IBLZ5OSK","created_at":"2026-05-18T12:30:22Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2016:IBLZ5OSKGJSY7UVZBFWQFBJIHF","target":"record","payload":{"canonical_record":{"source":{"id":"1609.07064","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2016-09-22T16:55:29Z","cross_cats_sorted":[],"title_canon_sha256":"ec4490b4f68a5efc388a139b2e858e82f541ed7dcaec424a8eaf72a984036d61","abstract_canon_sha256":"6d74ba1963367250aaf9f3de9235af4a1a5d5d41a27e90a0b99f134c1cdc2e58"},"schema_version":"1.0"},"canonical_sha256":"40579eba4a32658fd2b9096d028528394d374147026e84514ed89824c65f43c4","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:45:06.382122Z","signature_b64":"ZUbRZ2nNGRPV7TZq+KDs78dmQ6S8ZUu62RNo8N2Rwwn7ZcvHy+HgAAvIyjmsH9sPHfQvADBc+d4G5pB/ny00CQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"40579eba4a32658fd2b9096d028528394d374147026e84514ed89824c65f43c4","last_reissued_at":"2026-05-18T00:45:06.381711Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:45:06.381711Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1609.07064","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":"2026-05-18T00:45:06Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"LvFOjW/QOP0TpHor4tQsYUJElJo4ZwRJSNMxa5UeR9CLa+qBlQ5Ryhfh0VhG24DSSfYVOp/Q+gBmB2dur+fYCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-03T17:50:03.079852Z"},"content_sha256":"0ae2efa0ce157aa0937b27ea493a62c8c94b2ca8b6668aba054597e6368e44f0","schema_version":"1.0","event_id":"sha256:0ae2efa0ce157aa0937b27ea493a62c8c94b2ca8b6668aba054597e6368e44f0"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2016:IBLZ5OSKGJSY7UVZBFWQFBJIHF","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Quantum key distribution by phase flipping of coherent states of light","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"G. A. Barbosa, J. van de Graaf, N. Paunkovi\\'c, P. Mateus","submitted_at":"2016-09-22T16:55:29Z","abstract_excerpt":"In this paper we present quantum key distribution protocol that, instead of single qubits, uses mesoscopic coherent states of light $|\\alpha\\rangle$ to encode bit values of a randomly generated key. Given the reference value $\\alpha\\in\\mathbb C$, and a string of phase rotations each randomly taken from a set of $2M$ equidistant phases, Alice prepares a quantum state given by a product of coherent states of light, such that a complex phase of each pulse is rotated by the corresponding phase rotation. The encoding of $i$-th bit of the key $r=r_1 \\dots r_\\ell$ is done by further performing phase "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1609.07064","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":"2026-05-18T00:45:06Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"C8QZJm8+l2rXfFNM7SguwQOaxEI/3rzPR/B2Axf53LNjBTE3XhTxx/L5Zg8GmwYYzYOQ0m2iolYS/aF3swrEDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-03T17:50:03.080189Z"},"content_sha256":"1eb8d74dbec1dbfb1490a081c331ae2a44605f851c5636695fc2ae8b22f9a1cc","schema_version":"1.0","event_id":"sha256:1eb8d74dbec1dbfb1490a081c331ae2a44605f851c5636695fc2ae8b22f9a1cc"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/IBLZ5OSKGJSY7UVZBFWQFBJIHF/bundle.json","state_url":"https://pith.science/pith/IBLZ5OSKGJSY7UVZBFWQFBJIHF/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/IBLZ5OSKGJSY7UVZBFWQFBJIHF/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":"2026-06-03T17:50:03Z","links":{"resolver":"https://pith.science/pith/IBLZ5OSKGJSY7UVZBFWQFBJIHF","bundle":"https://pith.science/pith/IBLZ5OSKGJSY7UVZBFWQFBJIHF/bundle.json","state":"https://pith.science/pith/IBLZ5OSKGJSY7UVZBFWQFBJIHF/state.json","well_known_bundle":"https://pith.science/.well-known/pith/IBLZ5OSKGJSY7UVZBFWQFBJIHF/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:IBLZ5OSKGJSY7UVZBFWQFBJIHF","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":"6d74ba1963367250aaf9f3de9235af4a1a5d5d41a27e90a0b99f134c1cdc2e58","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2016-09-22T16:55:29Z","title_canon_sha256":"ec4490b4f68a5efc388a139b2e858e82f541ed7dcaec424a8eaf72a984036d61"},"schema_version":"1.0","source":{"id":"1609.07064","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1609.07064","created_at":"2026-05-18T00:45:06Z"},{"alias_kind":"arxiv_version","alias_value":"1609.07064v2","created_at":"2026-05-18T00:45:06Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1609.07064","created_at":"2026-05-18T00:45:06Z"},{"alias_kind":"pith_short_12","alias_value":"IBLZ5OSKGJSY","created_at":"2026-05-18T12:30:22Z"},{"alias_kind":"pith_short_16","alias_value":"IBLZ5OSKGJSY7UVZ","created_at":"2026-05-18T12:30:22Z"},{"alias_kind":"pith_short_8","alias_value":"IBLZ5OSK","created_at":"2026-05-18T12:30:22Z"}],"graph_snapshots":[{"event_id":"sha256:1eb8d74dbec1dbfb1490a081c331ae2a44605f851c5636695fc2ae8b22f9a1cc","target":"graph","created_at":"2026-05-18T00:45:06Z","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":"In this paper we present quantum key distribution protocol that, instead of single qubits, uses mesoscopic coherent states of light $|\\alpha\\rangle$ to encode bit values of a randomly generated key. Given the reference value $\\alpha\\in\\mathbb C$, and a string of phase rotations each randomly taken from a set of $2M$ equidistant phases, Alice prepares a quantum state given by a product of coherent states of light, such that a complex phase of each pulse is rotated by the corresponding phase rotation. The encoding of $i$-th bit of the key $r=r_1 \\dots r_\\ell$ is done by further performing phase ","authors_text":"G. A. Barbosa, J. van de Graaf, N. Paunkovi\\'c, P. Mateus","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2016-09-22T16:55:29Z","title":"Quantum key distribution by phase flipping of coherent states of light"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1609.07064","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":"sha256:0ae2efa0ce157aa0937b27ea493a62c8c94b2ca8b6668aba054597e6368e44f0","target":"record","created_at":"2026-05-18T00:45:06Z","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":"6d74ba1963367250aaf9f3de9235af4a1a5d5d41a27e90a0b99f134c1cdc2e58","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2016-09-22T16:55:29Z","title_canon_sha256":"ec4490b4f68a5efc388a139b2e858e82f541ed7dcaec424a8eaf72a984036d61"},"schema_version":"1.0","source":{"id":"1609.07064","kind":"arxiv","version":2}},"canonical_sha256":"40579eba4a32658fd2b9096d028528394d374147026e84514ed89824c65f43c4","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"40579eba4a32658fd2b9096d028528394d374147026e84514ed89824c65f43c4","first_computed_at":"2026-05-18T00:45:06.381711Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:45:06.381711Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"ZUbRZ2nNGRPV7TZq+KDs78dmQ6S8ZUu62RNo8N2Rwwn7ZcvHy+HgAAvIyjmsH9sPHfQvADBc+d4G5pB/ny00CQ==","signature_status":"signed_v1","signed_at":"2026-05-18T00:45:06.382122Z","signed_message":"canonical_sha256_bytes"},"source_id":"1609.07064","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:0ae2efa0ce157aa0937b27ea493a62c8c94b2ca8b6668aba054597e6368e44f0","sha256:1eb8d74dbec1dbfb1490a081c331ae2a44605f851c5636695fc2ae8b22f9a1cc"],"state_sha256":"8494384f95e3ef7bdda25c4d815523089550b06182977404397b36c1b0c4efbd"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"exrsF2LC5T7rCipLpQpu0EfFnxlhe9eEVcPSXDqUNSU8ii+9ssYiQ3RYaJkdBvhgFVyF2RJitT24gPu+jMcRBQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-03T17:50:03.081975Z","bundle_sha256":"5d087db3515562c62acc4ef3cd674803a156b28d6f901913f9d0980f03623e75"}}