{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2016:X44CQYIVM7PD6OU3MZ7DKZNUP7","short_pith_number":"pith:X44CQYIV","canonical_record":{"source":{"id":"1609.09436","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2016-09-29T17:39:10Z","cross_cats_sorted":[],"title_canon_sha256":"a7890e9d26932ae2f49983531dc11920c2f01f9755c5b3c1b0f32cf7ab4d4f88","abstract_canon_sha256":"98fed3afb2419e85f450bd1510f1fdc108c72a28f0e8150c45e7575733af5440"},"schema_version":"1.0"},"canonical_sha256":"bf3828611567de3f3a9b667e3565b47fcd4ea78c55ff3606c1adbbc563128821","source":{"kind":"arxiv","id":"1609.09436","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1609.09436","created_at":"2026-05-18T01:03:37Z"},{"alias_kind":"arxiv_version","alias_value":"1609.09436v1","created_at":"2026-05-18T01:03:37Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1609.09436","created_at":"2026-05-18T01:03:37Z"},{"alias_kind":"pith_short_12","alias_value":"X44CQYIVM7PD","created_at":"2026-05-18T12:30:51Z"},{"alias_kind":"pith_short_16","alias_value":"X44CQYIVM7PD6OU3","created_at":"2026-05-18T12:30:51Z"},{"alias_kind":"pith_short_8","alias_value":"X44CQYIV","created_at":"2026-05-18T12:30:51Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2016:X44CQYIVM7PD6OU3MZ7DKZNUP7","target":"record","payload":{"canonical_record":{"source":{"id":"1609.09436","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2016-09-29T17:39:10Z","cross_cats_sorted":[],"title_canon_sha256":"a7890e9d26932ae2f49983531dc11920c2f01f9755c5b3c1b0f32cf7ab4d4f88","abstract_canon_sha256":"98fed3afb2419e85f450bd1510f1fdc108c72a28f0e8150c45e7575733af5440"},"schema_version":"1.0"},"canonical_sha256":"bf3828611567de3f3a9b667e3565b47fcd4ea78c55ff3606c1adbbc563128821","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:03:37.914517Z","signature_b64":"uuvxJHRWrOY8QagdbMQVzho6RDBATMraAaSEsG49mVK3FeLHKYGMD0RGaHvxM0dyL5iU9YpeS5yqCetf4Q3bDA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"bf3828611567de3f3a9b667e3565b47fcd4ea78c55ff3606c1adbbc563128821","last_reissued_at":"2026-05-18T01:03:37.914041Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:03:37.914041Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1609.09436","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":"2026-05-18T01:03:37Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"MVMl6uucWN9kLAhvp9jD4rWCqBzpT3oTJiRuZmoYlc8p9MhlZ+Dgo3UZGxwTzlx1AKxBmjrQRC49QUbbrsTMDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T17:16:07.467983Z"},"content_sha256":"1125c7170827f20a56a8f0819ad012eeb367da7490fe4f554abf5e1697ae18e4","schema_version":"1.0","event_id":"sha256:1125c7170827f20a56a8f0819ad012eeb367da7490fe4f554abf5e1697ae18e4"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2016:X44CQYIVM7PD6OU3MZ7DKZNUP7","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Composably secure time-frequency quantum key distribution","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"Jonathan Barrett, Joshua Nunn, Nathan Walk","submitted_at":"2016-09-29T17:39:10Z","abstract_excerpt":"We present a composable security proof, valid against arbitrary attacks and including finite-size effects, for a high dimensional time-frequency quantum key distribution (TFQKD) protocol based upon spectrally entangled photons. Previous works have focused on TFQKD schemes as it combines the impressive loss tolerance of single-photon QKD with the large alphabets of continuous variable (CV) schemes, which enables the potential for more than one bit of secret key per transmission. However, the finite-size security of such schemes has only been proven under the assumption of collective Gaussian at"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1609.09436","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":"2026-05-18T01:03:37Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"dISTFzvfUa9lXpz/2uwpMrsSe4djBls+0TUaR0FgVo99mEwf6WHvigKjZ5SPRpX2KHSweR8MVOlr5pYUVxa/Dw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T17:16:07.468690Z"},"content_sha256":"12aef477e136bc6ab3aeacff5e9935b879268bf83dd4f23983321b480a4d2169","schema_version":"1.0","event_id":"sha256:12aef477e136bc6ab3aeacff5e9935b879268bf83dd4f23983321b480a4d2169"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/X44CQYIVM7PD6OU3MZ7DKZNUP7/bundle.json","state_url":"https://pith.science/pith/X44CQYIVM7PD6OU3MZ7DKZNUP7/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/X44CQYIVM7PD6OU3MZ7DKZNUP7/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":"2026-05-25T17:16:07Z","links":{"resolver":"https://pith.science/pith/X44CQYIVM7PD6OU3MZ7DKZNUP7","bundle":"https://pith.science/pith/X44CQYIVM7PD6OU3MZ7DKZNUP7/bundle.json","state":"https://pith.science/pith/X44CQYIVM7PD6OU3MZ7DKZNUP7/state.json","well_known_bundle":"https://pith.science/.well-known/pith/X44CQYIVM7PD6OU3MZ7DKZNUP7/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:X44CQYIVM7PD6OU3MZ7DKZNUP7","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":"98fed3afb2419e85f450bd1510f1fdc108c72a28f0e8150c45e7575733af5440","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2016-09-29T17:39:10Z","title_canon_sha256":"a7890e9d26932ae2f49983531dc11920c2f01f9755c5b3c1b0f32cf7ab4d4f88"},"schema_version":"1.0","source":{"id":"1609.09436","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1609.09436","created_at":"2026-05-18T01:03:37Z"},{"alias_kind":"arxiv_version","alias_value":"1609.09436v1","created_at":"2026-05-18T01:03:37Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1609.09436","created_at":"2026-05-18T01:03:37Z"},{"alias_kind":"pith_short_12","alias_value":"X44CQYIVM7PD","created_at":"2026-05-18T12:30:51Z"},{"alias_kind":"pith_short_16","alias_value":"X44CQYIVM7PD6OU3","created_at":"2026-05-18T12:30:51Z"},{"alias_kind":"pith_short_8","alias_value":"X44CQYIV","created_at":"2026-05-18T12:30:51Z"}],"graph_snapshots":[{"event_id":"sha256:12aef477e136bc6ab3aeacff5e9935b879268bf83dd4f23983321b480a4d2169","target":"graph","created_at":"2026-05-18T01:03:37Z","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":"We present a composable security proof, valid against arbitrary attacks and including finite-size effects, for a high dimensional time-frequency quantum key distribution (TFQKD) protocol based upon spectrally entangled photons. Previous works have focused on TFQKD schemes as it combines the impressive loss tolerance of single-photon QKD with the large alphabets of continuous variable (CV) schemes, which enables the potential for more than one bit of secret key per transmission. However, the finite-size security of such schemes has only been proven under the assumption of collective Gaussian at","authors_text":"Jonathan Barrett, Joshua Nunn, Nathan Walk","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2016-09-29T17:39:10Z","title":"Composably secure time-frequency quantum key distribution"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1609.09436","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":"sha256:1125c7170827f20a56a8f0819ad012eeb367da7490fe4f554abf5e1697ae18e4","target":"record","created_at":"2026-05-18T01:03:37Z","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":"98fed3afb2419e85f450bd1510f1fdc108c72a28f0e8150c45e7575733af5440","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2016-09-29T17:39:10Z","title_canon_sha256":"a7890e9d26932ae2f49983531dc11920c2f01f9755c5b3c1b0f32cf7ab4d4f88"},"schema_version":"1.0","source":{"id":"1609.09436","kind":"arxiv","version":1}},"canonical_sha256":"bf3828611567de3f3a9b667e3565b47fcd4ea78c55ff3606c1adbbc563128821","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"bf3828611567de3f3a9b667e3565b47fcd4ea78c55ff3606c1adbbc563128821","first_computed_at":"2026-05-18T01:03:37.914041Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:03:37.914041Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"uuvxJHRWrOY8QagdbMQVzho6RDBATMraAaSEsG49mVK3FeLHKYGMD0RGaHvxM0dyL5iU9YpeS5yqCetf4Q3bDA==","signature_status":"signed_v1","signed_at":"2026-05-18T01:03:37.914517Z","signed_message":"canonical_sha256_bytes"},"source_id":"1609.09436","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:1125c7170827f20a56a8f0819ad012eeb367da7490fe4f554abf5e1697ae18e4","sha256:12aef477e136bc6ab3aeacff5e9935b879268bf83dd4f23983321b480a4d2169"],"state_sha256":"62c15ffaa52477000bb8e0e30593a7d51f141c5cfcf991b7ced9c0f6e2291cbb"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"BtI1eVdCyU8RXd9gu9edFidqb3H/xpuELMNDMm4YXhKknGNv7AlFy1GvWMEX7i4FmUT5k3S+qWVEtHjkY5wjCQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-25T17:16:07.472334Z","bundle_sha256":"0abced190d5ce80185cc93a63c963de393da1025d004f07b1ccbc93868f9f3b5"}}