{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2015:YSCRMQVLGWEYDSZ5ZSITRPYKN7","short_pith_number":"pith:YSCRMQVL","canonical_record":{"source":{"id":"1506.00929","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2015-06-02T15:39:26Z","cross_cats_sorted":["hep-ex"],"title_canon_sha256":"840795fb2f738b50589050d0a99d29cbd684d6185346a3e637569a86dbbbf857","abstract_canon_sha256":"490457973aca4b925bd0b37477bc5f608d6882f627a9c4c205585e09d98ec6f9"},"schema_version":"1.0"},"canonical_sha256":"c4851642ab358981cb3dcc9138bf0a6fc8faf6616240bba5e077cd3e46531942","source":{"kind":"arxiv","id":"1506.00929","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1506.00929","created_at":"2026-05-18T01:34:16Z"},{"alias_kind":"arxiv_version","alias_value":"1506.00929v1","created_at":"2026-05-18T01:34:16Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1506.00929","created_at":"2026-05-18T01:34:16Z"},{"alias_kind":"pith_short_12","alias_value":"YSCRMQVLGWEY","created_at":"2026-05-18T12:29:52Z"},{"alias_kind":"pith_short_16","alias_value":"YSCRMQVLGWEYDSZ5","created_at":"2026-05-18T12:29:52Z"},{"alias_kind":"pith_short_8","alias_value":"YSCRMQVL","created_at":"2026-05-18T12:29:52Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2015:YSCRMQVLGWEYDSZ5ZSITRPYKN7","target":"record","payload":{"canonical_record":{"source":{"id":"1506.00929","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2015-06-02T15:39:26Z","cross_cats_sorted":["hep-ex"],"title_canon_sha256":"840795fb2f738b50589050d0a99d29cbd684d6185346a3e637569a86dbbbf857","abstract_canon_sha256":"490457973aca4b925bd0b37477bc5f608d6882f627a9c4c205585e09d98ec6f9"},"schema_version":"1.0"},"canonical_sha256":"c4851642ab358981cb3dcc9138bf0a6fc8faf6616240bba5e077cd3e46531942","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:34:16.454655Z","signature_b64":"4/9stoplorzThoZVZ9zTPJ+ZBVXUFOHy70K5nCAtdy7XEmBTXp8GpT0gEETNz5Jv7McCbP0jL5uENidQVelpCg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"c4851642ab358981cb3dcc9138bf0a6fc8faf6616240bba5e077cd3e46531942","last_reissued_at":"2026-05-18T01:34:16.453755Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:34:16.453755Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1506.00929","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":"2026-05-18T01:34:16Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"bdOnu4wCK3UnAzjlOZPoSlMRxJxDBgCOSs4GM7EGDqkkmIQltr3B9iOgsOXgqGXMfLg7bJ+hq6zO/YWZQybgBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T04:59:49.160593Z"},"content_sha256":"6d5f652fe50f461559570c2cdb60706c80c75088b8261202f078c838d4d06498","schema_version":"1.0","event_id":"sha256:6d5f652fe50f461559570c2cdb60706c80c75088b8261202f078c838d4d06498"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2015:YSCRMQVLGWEYDSZ5ZSITRPYKN7","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Construction and Measurements of an Improved Vacuum-Swing-Adsorption Radon-Mitigation System","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["hep-ex"],"primary_cat":"physics.ins-det","authors_text":"C. Dunagan, D. Tronstad, J. Street, K. Sundarnath, M. Stark, R. Bunker, R.W. Schnee, X. Loose","submitted_at":"2015-06-02T15:39:26Z","abstract_excerpt":"In order to reduce backgrounds from radon-daughter plate-out onto detector surfaces, an ultra-low-radon cleanroom is being commissioned at the South Dakota School of Mines and Technology. An improved vacuum-swing-adsorption radon mitigation system and cleanroom build upon a previous design implemented at Syracuse University that achieved radon levels of $\\sim$0.2$\\,$Bq$\\,$m$^{-3}$. This improved system will employ a better pump and larger carbon beds feeding a redesigned cleanroom with an internal HVAC unit and aged water for humidification. With the rebuilt (original) radon mitigation system,"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1506.00929","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":"2026-05-18T01:34:16Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"iaea07IBb8qI77h0lDvxUp4ntAFivr3DXIT15wxC4DUbeBUe/698JomxXvR4ApD9/a5MoV+JaDxIrHg50iTBDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T04:59:49.161250Z"},"content_sha256":"0caaae4b5fae9254385e11fa25ae126dd0ebbe8c444fb451b56e402a7a9fe578","schema_version":"1.0","event_id":"sha256:0caaae4b5fae9254385e11fa25ae126dd0ebbe8c444fb451b56e402a7a9fe578"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/YSCRMQVLGWEYDSZ5ZSITRPYKN7/bundle.json","state_url":"https://pith.science/pith/YSCRMQVLGWEYDSZ5ZSITRPYKN7/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/YSCRMQVLGWEYDSZ5ZSITRPYKN7/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":"2026-05-25T04:59:49Z","links":{"resolver":"https://pith.science/pith/YSCRMQVLGWEYDSZ5ZSITRPYKN7","bundle":"https://pith.science/pith/YSCRMQVLGWEYDSZ5ZSITRPYKN7/bundle.json","state":"https://pith.science/pith/YSCRMQVLGWEYDSZ5ZSITRPYKN7/state.json","well_known_bundle":"https://pith.science/.well-known/pith/YSCRMQVLGWEYDSZ5ZSITRPYKN7/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:YSCRMQVLGWEYDSZ5ZSITRPYKN7","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":"490457973aca4b925bd0b37477bc5f608d6882f627a9c4c205585e09d98ec6f9","cross_cats_sorted":["hep-ex"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2015-06-02T15:39:26Z","title_canon_sha256":"840795fb2f738b50589050d0a99d29cbd684d6185346a3e637569a86dbbbf857"},"schema_version":"1.0","source":{"id":"1506.00929","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1506.00929","created_at":"2026-05-18T01:34:16Z"},{"alias_kind":"arxiv_version","alias_value":"1506.00929v1","created_at":"2026-05-18T01:34:16Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1506.00929","created_at":"2026-05-18T01:34:16Z"},{"alias_kind":"pith_short_12","alias_value":"YSCRMQVLGWEY","created_at":"2026-05-18T12:29:52Z"},{"alias_kind":"pith_short_16","alias_value":"YSCRMQVLGWEYDSZ5","created_at":"2026-05-18T12:29:52Z"},{"alias_kind":"pith_short_8","alias_value":"YSCRMQVL","created_at":"2026-05-18T12:29:52Z"}],"graph_snapshots":[{"event_id":"sha256:0caaae4b5fae9254385e11fa25ae126dd0ebbe8c444fb451b56e402a7a9fe578","target":"graph","created_at":"2026-05-18T01:34:16Z","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 order to reduce backgrounds from radon-daughter plate-out onto detector surfaces, an ultra-low-radon cleanroom is being commissioned at the South Dakota School of Mines and Technology. An improved vacuum-swing-adsorption radon mitigation system and cleanroom build upon a previous design implemented at Syracuse University that achieved radon levels of $\\sim$0.2$\\,$Bq$\\,$m$^{-3}$. This improved system will employ a better pump and larger carbon beds feeding a redesigned cleanroom with an internal HVAC unit and aged water for humidification. With the rebuilt (original) radon mitigation system,","authors_text":"C. Dunagan, D. Tronstad, J. Street, K. Sundarnath, M. Stark, R. Bunker, R.W. Schnee, X. Loose","cross_cats":["hep-ex"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2015-06-02T15:39:26Z","title":"Construction and Measurements of an Improved Vacuum-Swing-Adsorption Radon-Mitigation System"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1506.00929","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":"sha256:6d5f652fe50f461559570c2cdb60706c80c75088b8261202f078c838d4d06498","target":"record","created_at":"2026-05-18T01:34:16Z","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":"490457973aca4b925bd0b37477bc5f608d6882f627a9c4c205585e09d98ec6f9","cross_cats_sorted":["hep-ex"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2015-06-02T15:39:26Z","title_canon_sha256":"840795fb2f738b50589050d0a99d29cbd684d6185346a3e637569a86dbbbf857"},"schema_version":"1.0","source":{"id":"1506.00929","kind":"arxiv","version":1}},"canonical_sha256":"c4851642ab358981cb3dcc9138bf0a6fc8faf6616240bba5e077cd3e46531942","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"c4851642ab358981cb3dcc9138bf0a6fc8faf6616240bba5e077cd3e46531942","first_computed_at":"2026-05-18T01:34:16.453755Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:34:16.453755Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"4/9stoplorzThoZVZ9zTPJ+ZBVXUFOHy70K5nCAtdy7XEmBTXp8GpT0gEETNz5Jv7McCbP0jL5uENidQVelpCg==","signature_status":"signed_v1","signed_at":"2026-05-18T01:34:16.454655Z","signed_message":"canonical_sha256_bytes"},"source_id":"1506.00929","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:6d5f652fe50f461559570c2cdb60706c80c75088b8261202f078c838d4d06498","sha256:0caaae4b5fae9254385e11fa25ae126dd0ebbe8c444fb451b56e402a7a9fe578"],"state_sha256":"f0fd8c60e40da04cb2be838eaee06a6bb4125c5024d888b6851d701930e04d39"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"kFs/Vw05u/Tr2GUmib9wrN7RQCIK5sBQqYkoHJx4zjD+XzRTmtFg9I1pmQJyLh+a9A3saEUdTrUxwALMjB8gBQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-25T04:59:49.164928Z","bundle_sha256":"a652fcb8280320c3571da8d211b9bcafa9bd8ee66eefdc47dc16bfea6ae1b4c4"}}