{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2016:T5BBQ3DCTG6COCSTF5FMXBBS36","short_pith_number":"pith:T5BBQ3DC","canonical_record":{"source":{"id":"1602.00941","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-ex","submitted_at":"2016-02-02T14:31:41Z","cross_cats_sorted":["physics.ins-det"],"title_canon_sha256":"8ca5ecadbc7793e0149ab410a4f2567837d0235275a32786335102b63816e8d6","abstract_canon_sha256":"8504a93995e982acecf755ac91b31c1b20d266681f807afb58c1d8abb9cedc6e"},"schema_version":"1.0"},"canonical_sha256":"9f42186c6299bc270a532f4acb8432dfb906ed3274ccb855ef024d38471404f5","source":{"kind":"arxiv","id":"1602.00941","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1602.00941","created_at":"2026-05-18T01:00:39Z"},{"alias_kind":"arxiv_version","alias_value":"1602.00941v1","created_at":"2026-05-18T01:00:39Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1602.00941","created_at":"2026-05-18T01:00:39Z"},{"alias_kind":"pith_short_12","alias_value":"T5BBQ3DCTG6C","created_at":"2026-05-18T12:30:44Z"},{"alias_kind":"pith_short_16","alias_value":"T5BBQ3DCTG6COCST","created_at":"2026-05-18T12:30:44Z"},{"alias_kind":"pith_short_8","alias_value":"T5BBQ3DC","created_at":"2026-05-18T12:30:44Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2016:T5BBQ3DCTG6COCSTF5FMXBBS36","target":"record","payload":{"canonical_record":{"source":{"id":"1602.00941","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-ex","submitted_at":"2016-02-02T14:31:41Z","cross_cats_sorted":["physics.ins-det"],"title_canon_sha256":"8ca5ecadbc7793e0149ab410a4f2567837d0235275a32786335102b63816e8d6","abstract_canon_sha256":"8504a93995e982acecf755ac91b31c1b20d266681f807afb58c1d8abb9cedc6e"},"schema_version":"1.0"},"canonical_sha256":"9f42186c6299bc270a532f4acb8432dfb906ed3274ccb855ef024d38471404f5","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:00:39.785432Z","signature_b64":"9e2sjmSvn+jCht3xKHqx17zThTbg6un2p+ydYOGquzvOd/R8Fq5TiCPC3z/elg/BIaW/hk5qKB0vvdyetZmVDA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"9f42186c6299bc270a532f4acb8432dfb906ed3274ccb855ef024d38471404f5","last_reissued_at":"2026-05-18T01:00:39.784800Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:00:39.784800Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1602.00941","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":"2026-05-18T01:00:39Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Z+oJsB4TjAcK9ALdeyukgU/J7/WgEXqncDNBnHry155A4teMbRNmF+tllYef3UmilAujGzfDr9G5IgVl0pQCBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-05T12:12:37.860703Z"},"content_sha256":"6639560ffb6951b988b2177abc598b3f428080f6c058da4e51d1e03a3831a1f2","schema_version":"1.0","event_id":"sha256:6639560ffb6951b988b2177abc598b3f428080f6c058da4e51d1e03a3831a1f2"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2016:T5BBQ3DCTG6COCSTF5FMXBBS36","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"A new approach to the experiment intended to test the weak equivalence principle for the neutron","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["physics.ins-det"],"primary_cat":"nucl-ex","authors_text":"A.I. Frank, D.V. Kustov, G.V. Kulin, M.A. Zakharov, S.V. Goryunov","submitted_at":"2016-02-02T14:31:41Z","abstract_excerpt":"A new approach to the free fall experiment with UCN is proposed. The idea is that the experiment is performed with neutrons from different equidistant lines of a discrete energy spectrum with a precisely known distance between the lines. Such a spectrum may be formed by neutron diffraction from a moving phase grating. Time-of-flight values of neutrons from different lines of the spectrum must be measured. Neither the initial neutron energy, nor the geometry parameters of the installation are required to be known in this method."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1602.00941","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":"2026-05-18T01:00:39Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"BsLd+6fmQOoSgxBo3badu1Dmmp/kcDtmcyM0c7/IHQYFHT9StJVoIPGJzqItyvfFemPBDbL1HfVFfJoE7+zvCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-05T12:12:37.861044Z"},"content_sha256":"2aa7bbc756ab82676f9e73cf6d8f0eb8df088f356e28fbc1764f2bf434958418","schema_version":"1.0","event_id":"sha256:2aa7bbc756ab82676f9e73cf6d8f0eb8df088f356e28fbc1764f2bf434958418"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/T5BBQ3DCTG6COCSTF5FMXBBS36/bundle.json","state_url":"https://pith.science/pith/T5BBQ3DCTG6COCSTF5FMXBBS36/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/T5BBQ3DCTG6COCSTF5FMXBBS36/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":"2026-06-05T12:12:37Z","links":{"resolver":"https://pith.science/pith/T5BBQ3DCTG6COCSTF5FMXBBS36","bundle":"https://pith.science/pith/T5BBQ3DCTG6COCSTF5FMXBBS36/bundle.json","state":"https://pith.science/pith/T5BBQ3DCTG6COCSTF5FMXBBS36/state.json","well_known_bundle":"https://pith.science/.well-known/pith/T5BBQ3DCTG6COCSTF5FMXBBS36/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:T5BBQ3DCTG6COCSTF5FMXBBS36","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":"8504a93995e982acecf755ac91b31c1b20d266681f807afb58c1d8abb9cedc6e","cross_cats_sorted":["physics.ins-det"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-ex","submitted_at":"2016-02-02T14:31:41Z","title_canon_sha256":"8ca5ecadbc7793e0149ab410a4f2567837d0235275a32786335102b63816e8d6"},"schema_version":"1.0","source":{"id":"1602.00941","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1602.00941","created_at":"2026-05-18T01:00:39Z"},{"alias_kind":"arxiv_version","alias_value":"1602.00941v1","created_at":"2026-05-18T01:00:39Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1602.00941","created_at":"2026-05-18T01:00:39Z"},{"alias_kind":"pith_short_12","alias_value":"T5BBQ3DCTG6C","created_at":"2026-05-18T12:30:44Z"},{"alias_kind":"pith_short_16","alias_value":"T5BBQ3DCTG6COCST","created_at":"2026-05-18T12:30:44Z"},{"alias_kind":"pith_short_8","alias_value":"T5BBQ3DC","created_at":"2026-05-18T12:30:44Z"}],"graph_snapshots":[{"event_id":"sha256:2aa7bbc756ab82676f9e73cf6d8f0eb8df088f356e28fbc1764f2bf434958418","target":"graph","created_at":"2026-05-18T01:00:39Z","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":"A new approach to the free fall experiment with UCN is proposed. The idea is that the experiment is performed with neutrons from different equidistant lines of a discrete energy spectrum with a precisely known distance between the lines. Such a spectrum may be formed by neutron diffraction from a moving phase grating. Time-of-flight values of neutrons from different lines of the spectrum must be measured. Neither the initial neutron energy, nor the geometry parameters of the installation are required to be known in this method.","authors_text":"A.I. Frank, D.V. Kustov, G.V. Kulin, M.A. Zakharov, S.V. Goryunov","cross_cats":["physics.ins-det"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-ex","submitted_at":"2016-02-02T14:31:41Z","title":"A new approach to the experiment intended to test the weak equivalence principle for the neutron"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1602.00941","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":"sha256:6639560ffb6951b988b2177abc598b3f428080f6c058da4e51d1e03a3831a1f2","target":"record","created_at":"2026-05-18T01:00:39Z","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":"8504a93995e982acecf755ac91b31c1b20d266681f807afb58c1d8abb9cedc6e","cross_cats_sorted":["physics.ins-det"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-ex","submitted_at":"2016-02-02T14:31:41Z","title_canon_sha256":"8ca5ecadbc7793e0149ab410a4f2567837d0235275a32786335102b63816e8d6"},"schema_version":"1.0","source":{"id":"1602.00941","kind":"arxiv","version":1}},"canonical_sha256":"9f42186c6299bc270a532f4acb8432dfb906ed3274ccb855ef024d38471404f5","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"9f42186c6299bc270a532f4acb8432dfb906ed3274ccb855ef024d38471404f5","first_computed_at":"2026-05-18T01:00:39.784800Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:00:39.784800Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"9e2sjmSvn+jCht3xKHqx17zThTbg6un2p+ydYOGquzvOd/R8Fq5TiCPC3z/elg/BIaW/hk5qKB0vvdyetZmVDA==","signature_status":"signed_v1","signed_at":"2026-05-18T01:00:39.785432Z","signed_message":"canonical_sha256_bytes"},"source_id":"1602.00941","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:6639560ffb6951b988b2177abc598b3f428080f6c058da4e51d1e03a3831a1f2","sha256:2aa7bbc756ab82676f9e73cf6d8f0eb8df088f356e28fbc1764f2bf434958418"],"state_sha256":"52ee2295bb62c1e304b08a22871fa57710271270951a36dc5dc9465b43c2449f"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"DSSbjbcXOUWYdlKULoICUs5tK5chXnt8xIAdJiMjnwpR8eMDM2sye33BwAj5XNbCPsGbsCESiybfGo7g/4WhAQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-05T12:12:37.862934Z","bundle_sha256":"e30ad7fed8f7df94edf8fa62cd5c85ed5505b6c887ad32d3c41e8f48956178e4"}}