{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2025:JOOOH5PTJQFYGLVVFJZHWMC7N6","short_pith_number":"pith:JOOOH5PT","canonical_record":{"source":{"id":"2505.01472","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.CR","submitted_at":"2025-05-02T13:08:28Z","cross_cats_sorted":["cs.CY"],"title_canon_sha256":"bb97127e3b4d5ce5f3b99a7bf02e48453ce568d40709b1cc33cebb6bfcfc7469","abstract_canon_sha256":"8e0548c4bfd3870308a0cff5c76a11f4cefb5b074d0a488b9b3e8bf2f0ba3e1c"},"schema_version":"1.0"},"canonical_sha256":"4b9ce3f5f34c0b832eb52a727b305f6f8d327727bff37b00cdb10d57ad5ff9ac","source":{"kind":"arxiv","id":"2505.01472","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2505.01472","created_at":"2026-07-05T10:57:58Z"},{"alias_kind":"arxiv_version","alias_value":"2505.01472v1","created_at":"2026-07-05T10:57:58Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2505.01472","created_at":"2026-07-05T10:57:58Z"},{"alias_kind":"pith_short_12","alias_value":"JOOOH5PTJQFY","created_at":"2026-07-05T10:57:58Z"},{"alias_kind":"pith_short_16","alias_value":"JOOOH5PTJQFYGLVV","created_at":"2026-07-05T10:57:58Z"},{"alias_kind":"pith_short_8","alias_value":"JOOOH5PT","created_at":"2026-07-05T10:57:58Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2025:JOOOH5PTJQFYGLVVFJZHWMC7N6","target":"record","payload":{"canonical_record":{"source":{"id":"2505.01472","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.CR","submitted_at":"2025-05-02T13:08:28Z","cross_cats_sorted":["cs.CY"],"title_canon_sha256":"bb97127e3b4d5ce5f3b99a7bf02e48453ce568d40709b1cc33cebb6bfcfc7469","abstract_canon_sha256":"8e0548c4bfd3870308a0cff5c76a11f4cefb5b074d0a488b9b3e8bf2f0ba3e1c"},"schema_version":"1.0"},"canonical_sha256":"4b9ce3f5f34c0b832eb52a727b305f6f8d327727bff37b00cdb10d57ad5ff9ac","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T10:57:58.639846Z","signature_b64":"yZygpMrO90DZ3s/MuqrssJvwTH38jtXZklIFpTF+R4eXWd+XvJybMd4vZjP9+asLrnEkeH1+NVoJ/mpWcxp0Dw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"4b9ce3f5f34c0b832eb52a727b305f6f8d327727bff37b00cdb10d57ad5ff9ac","last_reissued_at":"2026-07-05T10:57:58.639333Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T10:57:58.639333Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2505.01472","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":"2026-07-05T10:57:58Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"MOMpVdU8ohJ68WOXXi7fdmiuj5H5LJsuqmD0StYGrctU9iX0uDNS97GAJZrLSB0rIME6DvyZjIk1z5wX25TLDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-14T15:43:38.874877Z"},"content_sha256":"f19bd3c2a14a4da7d29b8ce5e3c62426a0f30ba1f269d0716031133a3ef813ea","schema_version":"1.0","event_id":"sha256:f19bd3c2a14a4da7d29b8ce5e3c62426a0f30ba1f269d0716031133a3ef813ea"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2025:JOOOH5PTJQFYGLVVFJZHWMC7N6","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"SafeTab-P: Disclosure Avoidance for the 2020 Census Detailed Demographic and Housing Characteristics File A (Detailed DHC-A)","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["cs.CY"],"primary_cat":"cs.CR","authors_text":"Amritha Pai, Ashwin Machanavajjhala, Bayard Carlson, Daniel Simmons-Marengo, David Pujol, Gerome Miklau, Luke Hartman, Michael Hay, Ruchit Shrestha, Ryan Cumings-Menon, Sam Haney, Simran Rajpal, Skye Berghel, William Sexton","submitted_at":"2025-05-02T13:08:28Z","abstract_excerpt":"This article describes the disclosure avoidance algorithm that the U.S. Census Bureau used to protect the Detailed Demographic and Housing Characteristics File A (Detailed DHC-A) of the 2020 Census. The tabulations contain statistics (counts) of demographic characteristics of the entire population of the United States, crossed with detailed races and ethnicities at varying levels of geography. The article describes the SafeTab-P algorithm, which is based on adding noise drawn to statistics of interest from a discrete Gaussian distribution. A key innovation in SafeTab-P is the ability to adapti"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2505.01472","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/2505.01472/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":"2026-07-05T10:57:58Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"jHFt/L98RIMGv0HsUlKNCh1PXtn4Q3sJW07TCshTC5OG2hwJkrzzFIDHmtFqYeU79ZQC8RQH38/M4G3UGadYCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-14T15:43:38.875407Z"},"content_sha256":"23a580597571fdcb66e9332da8c9f948a9bcc9521b20ce84e91d909938bd5623","schema_version":"1.0","event_id":"sha256:23a580597571fdcb66e9332da8c9f948a9bcc9521b20ce84e91d909938bd5623"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/JOOOH5PTJQFYGLVVFJZHWMC7N6/bundle.json","state_url":"https://pith.science/pith/JOOOH5PTJQFYGLVVFJZHWMC7N6/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/JOOOH5PTJQFYGLVVFJZHWMC7N6/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":"2026-08-14T15:43:38Z","links":{"resolver":"https://pith.science/pith/JOOOH5PTJQFYGLVVFJZHWMC7N6","bundle":"https://pith.science/pith/JOOOH5PTJQFYGLVVFJZHWMC7N6/bundle.json","state":"https://pith.science/pith/JOOOH5PTJQFYGLVVFJZHWMC7N6/state.json","well_known_bundle":"https://pith.science/.well-known/pith/JOOOH5PTJQFYGLVVFJZHWMC7N6/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2025:JOOOH5PTJQFYGLVVFJZHWMC7N6","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":"8e0548c4bfd3870308a0cff5c76a11f4cefb5b074d0a488b9b3e8bf2f0ba3e1c","cross_cats_sorted":["cs.CY"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.CR","submitted_at":"2025-05-02T13:08:28Z","title_canon_sha256":"bb97127e3b4d5ce5f3b99a7bf02e48453ce568d40709b1cc33cebb6bfcfc7469"},"schema_version":"1.0","source":{"id":"2505.01472","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2505.01472","created_at":"2026-07-05T10:57:58Z"},{"alias_kind":"arxiv_version","alias_value":"2505.01472v1","created_at":"2026-07-05T10:57:58Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2505.01472","created_at":"2026-07-05T10:57:58Z"},{"alias_kind":"pith_short_12","alias_value":"JOOOH5PTJQFY","created_at":"2026-07-05T10:57:58Z"},{"alias_kind":"pith_short_16","alias_value":"JOOOH5PTJQFYGLVV","created_at":"2026-07-05T10:57:58Z"},{"alias_kind":"pith_short_8","alias_value":"JOOOH5PT","created_at":"2026-07-05T10:57:58Z"}],"graph_snapshots":[{"event_id":"sha256:23a580597571fdcb66e9332da8c9f948a9bcc9521b20ce84e91d909938bd5623","target":"graph","created_at":"2026-07-05T10:57:58Z","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/2505.01472/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"This article describes the disclosure avoidance algorithm that the U.S. Census Bureau used to protect the Detailed Demographic and Housing Characteristics File A (Detailed DHC-A) of the 2020 Census. The tabulations contain statistics (counts) of demographic characteristics of the entire population of the United States, crossed with detailed races and ethnicities at varying levels of geography. The article describes the SafeTab-P algorithm, which is based on adding noise drawn to statistics of interest from a discrete Gaussian distribution. A key innovation in SafeTab-P is the ability to adapti","authors_text":"Amritha Pai, Ashwin Machanavajjhala, Bayard Carlson, Daniel Simmons-Marengo, David Pujol, Gerome Miklau, Luke Hartman, Michael Hay, Ruchit Shrestha, Ryan Cumings-Menon, Sam Haney, Simran Rajpal, Skye Berghel, William Sexton","cross_cats":["cs.CY"],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.CR","submitted_at":"2025-05-02T13:08:28Z","title":"SafeTab-P: Disclosure Avoidance for the 2020 Census Detailed Demographic and Housing Characteristics File A (Detailed DHC-A)"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2505.01472","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:f19bd3c2a14a4da7d29b8ce5e3c62426a0f30ba1f269d0716031133a3ef813ea","target":"record","created_at":"2026-07-05T10:57:58Z","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":"8e0548c4bfd3870308a0cff5c76a11f4cefb5b074d0a488b9b3e8bf2f0ba3e1c","cross_cats_sorted":["cs.CY"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.CR","submitted_at":"2025-05-02T13:08:28Z","title_canon_sha256":"bb97127e3b4d5ce5f3b99a7bf02e48453ce568d40709b1cc33cebb6bfcfc7469"},"schema_version":"1.0","source":{"id":"2505.01472","kind":"arxiv","version":1}},"canonical_sha256":"4b9ce3f5f34c0b832eb52a727b305f6f8d327727bff37b00cdb10d57ad5ff9ac","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"4b9ce3f5f34c0b832eb52a727b305f6f8d327727bff37b00cdb10d57ad5ff9ac","first_computed_at":"2026-07-05T10:57:58.639333Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T10:57:58.639333Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"yZygpMrO90DZ3s/MuqrssJvwTH38jtXZklIFpTF+R4eXWd+XvJybMd4vZjP9+asLrnEkeH1+NVoJ/mpWcxp0Dw==","signature_status":"signed_v1","signed_at":"2026-07-05T10:57:58.639846Z","signed_message":"canonical_sha256_bytes"},"source_id":"2505.01472","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:f19bd3c2a14a4da7d29b8ce5e3c62426a0f30ba1f269d0716031133a3ef813ea","sha256:23a580597571fdcb66e9332da8c9f948a9bcc9521b20ce84e91d909938bd5623"],"state_sha256":"d79d90dc217fe57b8b08da46793a54ebcb180e491e012c9166ee0b614f8bbfa6"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"SXY7BxLTp9h4Y3YMTqYt5OMXdkCVJ5ZKfmG5V0CHI3aouP7qLi0JWrKfp2/RuA5H1AbBRxyi8F85CRlbQtNgBA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-14T15:43:38.907558Z","bundle_sha256":"93c8ebc5f6bb40b58dc1669c7e376a7cb33868840ac23aa94721fa535ae7f164"}}