{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2020:S7JECQLUII2VT5GH2TYMS45BUU","short_pith_number":"pith:S7JECQLU","canonical_record":{"source":{"id":"2006.01947","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2020-06-02T21:25:07Z","cross_cats_sorted":["hep-ex"],"title_canon_sha256":"38c1f34572ae0b9b229541c4af4bf04ddbe96f88f4fa06b8f3511f6ec4d7ccc7","abstract_canon_sha256":"1d4a7a33d60603a9d38e1b723c47091fe0e99e4238566ee1685b756d3cec3bb1"},"schema_version":"1.0"},"canonical_sha256":"97d2414174423559f4c7d4f0c973a1a52f557b87910045b059f1b6167765538f","source":{"kind":"arxiv","id":"2006.01947","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2006.01947","created_at":"2026-07-05T01:32:06Z"},{"alias_kind":"arxiv_version","alias_value":"2006.01947v2","created_at":"2026-07-05T01:32:06Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2006.01947","created_at":"2026-07-05T01:32:06Z"},{"alias_kind":"pith_short_12","alias_value":"S7JECQLUII2V","created_at":"2026-07-05T01:32:06Z"},{"alias_kind":"pith_short_16","alias_value":"S7JECQLUII2VT5GH","created_at":"2026-07-05T01:32:06Z"},{"alias_kind":"pith_short_8","alias_value":"S7JECQLU","created_at":"2026-07-05T01:32:06Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2020:S7JECQLUII2VT5GH2TYMS45BUU","target":"record","payload":{"canonical_record":{"source":{"id":"2006.01947","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2020-06-02T21:25:07Z","cross_cats_sorted":["hep-ex"],"title_canon_sha256":"38c1f34572ae0b9b229541c4af4bf04ddbe96f88f4fa06b8f3511f6ec4d7ccc7","abstract_canon_sha256":"1d4a7a33d60603a9d38e1b723c47091fe0e99e4238566ee1685b756d3cec3bb1"},"schema_version":"1.0"},"canonical_sha256":"97d2414174423559f4c7d4f0c973a1a52f557b87910045b059f1b6167765538f","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T01:32:06.079736Z","signature_b64":"kA8gT6Q2fS0rKHn36UScETdgSxaXFhUp0RanhbCpbR4oSvSZZ31eIzDioY6sS4YRGLrjPN+vvl6zXygzufkoAA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"97d2414174423559f4c7d4f0c973a1a52f557b87910045b059f1b6167765538f","last_reissued_at":"2026-07-05T01:32:06.079247Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T01:32:06.079247Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2006.01947","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":"2026-07-05T01:32:06Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ZYwS9YwUdSlwQL1EOZUnqx7Xh73MxLdl+8CuFJg8fl+1OcE7Yf9UtJxQNJJ7w5NHTcRXlCo6/vM7nLIHbf/rCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-09T03:53:45.790291Z"},"content_sha256":"71361a381862ca4116a1afca870ef13f428e15d0be73d073a85616136baf5cbc","schema_version":"1.0","event_id":"sha256:71361a381862ca4116a1afca870ef13f428e15d0be73d073a85616136baf5cbc"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2020:S7JECQLUII2VT5GH2TYMS45BUU","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Study of muonium emission from laser-ablated silica aerogel","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["hep-ex"],"primary_cat":"physics.ins-det","authors_text":"A. Olin, G. Beer, G.M. Luke, G.M. Marshall, H. Yasuda, J. Beare, J.H. Brewer, K. Ishida, K. Kanamori, K. Olchanski, K. Shimomura, K. Suzuki, M.A. Rehman, M. Iwasaki, M. Otani, M. Tabata, N. Kawamura, N. Saito, R. Kitamura, S. Kamal, S. Li, T. Iijima, T. Mibe, Y. Miyake, Y. Oishi, Y. Sato","submitted_at":"2020-06-02T21:25:07Z","abstract_excerpt":"The emission of muonium ($\\mu^+e^-$) atoms into vacuum from silica aerogel with laser ablation on its surface was studied with various ablation structures at room temperature using the subsurface muon beams at TRIUMF and Japan Proton Accelerator Research Complex (J-PARC). Laser ablation was applied to produce holes or grooves with typical dimensions of a few hundred $\\mu$m to a few mm, except for some extreme conditions. The measured emission rate tends to be higher for larger fractions of ablation opening and for shallower depths. More than a few ablation structures reach the emission rates s"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2006.01947","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2006.01947/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":"2026-07-05T01:32:06Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"tC6SA7TgrORFNOcIqXmjs2xhYVemFdvNpRAHR/UrwAhAWR4pWT18wpHNh2qqKuoY+cx7QGyoiFjJf+KPTR3/Dg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-09T03:53:45.790682Z"},"content_sha256":"55d7bce1de0390957f503b9fd61825886987833ecce4e0a9f0b3ee964a773ca3","schema_version":"1.0","event_id":"sha256:55d7bce1de0390957f503b9fd61825886987833ecce4e0a9f0b3ee964a773ca3"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/S7JECQLUII2VT5GH2TYMS45BUU/bundle.json","state_url":"https://pith.science/pith/S7JECQLUII2VT5GH2TYMS45BUU/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/S7JECQLUII2VT5GH2TYMS45BUU/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":"2026-07-09T03:53:45Z","links":{"resolver":"https://pith.science/pith/S7JECQLUII2VT5GH2TYMS45BUU","bundle":"https://pith.science/pith/S7JECQLUII2VT5GH2TYMS45BUU/bundle.json","state":"https://pith.science/pith/S7JECQLUII2VT5GH2TYMS45BUU/state.json","well_known_bundle":"https://pith.science/.well-known/pith/S7JECQLUII2VT5GH2TYMS45BUU/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2020:S7JECQLUII2VT5GH2TYMS45BUU","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":"1d4a7a33d60603a9d38e1b723c47091fe0e99e4238566ee1685b756d3cec3bb1","cross_cats_sorted":["hep-ex"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2020-06-02T21:25:07Z","title_canon_sha256":"38c1f34572ae0b9b229541c4af4bf04ddbe96f88f4fa06b8f3511f6ec4d7ccc7"},"schema_version":"1.0","source":{"id":"2006.01947","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2006.01947","created_at":"2026-07-05T01:32:06Z"},{"alias_kind":"arxiv_version","alias_value":"2006.01947v2","created_at":"2026-07-05T01:32:06Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2006.01947","created_at":"2026-07-05T01:32:06Z"},{"alias_kind":"pith_short_12","alias_value":"S7JECQLUII2V","created_at":"2026-07-05T01:32:06Z"},{"alias_kind":"pith_short_16","alias_value":"S7JECQLUII2VT5GH","created_at":"2026-07-05T01:32:06Z"},{"alias_kind":"pith_short_8","alias_value":"S7JECQLU","created_at":"2026-07-05T01:32:06Z"}],"graph_snapshots":[{"event_id":"sha256:55d7bce1de0390957f503b9fd61825886987833ecce4e0a9f0b3ee964a773ca3","target":"graph","created_at":"2026-07-05T01:32:06Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/2006.01947/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"The emission of muonium ($\\mu^+e^-$) atoms into vacuum from silica aerogel with laser ablation on its surface was studied with various ablation structures at room temperature using the subsurface muon beams at TRIUMF and Japan Proton Accelerator Research Complex (J-PARC). Laser ablation was applied to produce holes or grooves with typical dimensions of a few hundred $\\mu$m to a few mm, except for some extreme conditions. The measured emission rate tends to be higher for larger fractions of ablation opening and for shallower depths. More than a few ablation structures reach the emission rates s","authors_text":"A. Olin, G. Beer, G.M. Luke, G.M. Marshall, H. Yasuda, J. Beare, J.H. Brewer, K. Ishida, K. Kanamori, K. Olchanski, K. Shimomura, K. Suzuki, M.A. Rehman, M. Iwasaki, M. Otani, M. Tabata, N. Kawamura, N. Saito, R. Kitamura, S. Kamal, S. Li, T. Iijima, T. Mibe, Y. Miyake, Y. Oishi, Y. Sato","cross_cats":["hep-ex"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2020-06-02T21:25:07Z","title":"Study of muonium emission from laser-ablated silica aerogel"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2006.01947","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":"sha256:71361a381862ca4116a1afca870ef13f428e15d0be73d073a85616136baf5cbc","target":"record","created_at":"2026-07-05T01:32:06Z","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":"1d4a7a33d60603a9d38e1b723c47091fe0e99e4238566ee1685b756d3cec3bb1","cross_cats_sorted":["hep-ex"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2020-06-02T21:25:07Z","title_canon_sha256":"38c1f34572ae0b9b229541c4af4bf04ddbe96f88f4fa06b8f3511f6ec4d7ccc7"},"schema_version":"1.0","source":{"id":"2006.01947","kind":"arxiv","version":2}},"canonical_sha256":"97d2414174423559f4c7d4f0c973a1a52f557b87910045b059f1b6167765538f","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"97d2414174423559f4c7d4f0c973a1a52f557b87910045b059f1b6167765538f","first_computed_at":"2026-07-05T01:32:06.079247Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T01:32:06.079247Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"kA8gT6Q2fS0rKHn36UScETdgSxaXFhUp0RanhbCpbR4oSvSZZ31eIzDioY6sS4YRGLrjPN+vvl6zXygzufkoAA==","signature_status":"signed_v1","signed_at":"2026-07-05T01:32:06.079736Z","signed_message":"canonical_sha256_bytes"},"source_id":"2006.01947","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:71361a381862ca4116a1afca870ef13f428e15d0be73d073a85616136baf5cbc","sha256:55d7bce1de0390957f503b9fd61825886987833ecce4e0a9f0b3ee964a773ca3"],"state_sha256":"cbe79d0b56d6c4659ea96503ea9812cf97c21f9f3d4c8ade8bd9b5d8f0315797"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"PN19UT0I7aVc7fW1JEEwz9DmM6NhB2Mwv+lySHkVih6VFHl9hzQqiyO/iqaqzZ/pQhGT7tQLe15JK9H+yQneDA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-09T03:53:45.792659Z","bundle_sha256":"c1825f82be2e5791d23936012e092521aa0f4a773bb40f158c8c749403645114"}}