{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2014:RDLFF5HV6YMMQEEH6XD2TFVQHX","short_pith_number":"pith:RDLFF5HV","canonical_record":{"source":{"id":"1401.4412","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2014-01-16T18:57:48Z","cross_cats_sorted":["physics.geo-ph"],"title_canon_sha256":"d075ea3ae13674e74258f0b06425196ea37abe267fde7262948cbe2af605ad40","abstract_canon_sha256":"ba4b53f353578d6d80b385971c007115bc63c7e3124b2ee635ee578ab183fd04"},"schema_version":"1.0"},"canonical_sha256":"88d652f4f5f618c81087f5c7a996b03de270a4daa247b74db7889c7ee88cc53c","source":{"kind":"arxiv","id":"1401.4412","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1401.4412","created_at":"2026-05-18T03:00:48Z"},{"alias_kind":"arxiv_version","alias_value":"1401.4412v1","created_at":"2026-05-18T03:00:48Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1401.4412","created_at":"2026-05-18T03:00:48Z"},{"alias_kind":"pith_short_12","alias_value":"RDLFF5HV6YMM","created_at":"2026-05-18T12:28:46Z"},{"alias_kind":"pith_short_16","alias_value":"RDLFF5HV6YMMQEEH","created_at":"2026-05-18T12:28:46Z"},{"alias_kind":"pith_short_8","alias_value":"RDLFF5HV","created_at":"2026-05-18T12:28:46Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2014:RDLFF5HV6YMMQEEH6XD2TFVQHX","target":"record","payload":{"canonical_record":{"source":{"id":"1401.4412","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2014-01-16T18:57:48Z","cross_cats_sorted":["physics.geo-ph"],"title_canon_sha256":"d075ea3ae13674e74258f0b06425196ea37abe267fde7262948cbe2af605ad40","abstract_canon_sha256":"ba4b53f353578d6d80b385971c007115bc63c7e3124b2ee635ee578ab183fd04"},"schema_version":"1.0"},"canonical_sha256":"88d652f4f5f618c81087f5c7a996b03de270a4daa247b74db7889c7ee88cc53c","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:00:48.857843Z","signature_b64":"rSzm8934uW2YyrkhstW99x7xJHHvTe7R4cTcNMZrR2wrnAz4bT/+BiXh8dEVSa5wL79GWwUToBQpulRa5VTxBw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"88d652f4f5f618c81087f5c7a996b03de270a4daa247b74db7889c7ee88cc53c","last_reissued_at":"2026-05-18T03:00:48.857055Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:00:48.857055Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1401.4412","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":"2026-05-18T03:00:48Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Fq+prF0rIPnFryMqs5STRBojfLyxhA98Eac6ov4G7q+ZNp9PSahmQrOd2UtRdmCpCcCeXJAUI0ANf9c2pCe4AQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-02T00:21:23.586957Z"},"content_sha256":"69ba3f7b23cbfe279cbafbbe391c7d6b75cdbefdb9bd17106f6c98f4ea2fedaa","schema_version":"1.0","event_id":"sha256:69ba3f7b23cbfe279cbafbbe391c7d6b75cdbefdb9bd17106f6c98f4ea2fedaa"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2014:RDLFF5HV6YMMQEEH6XD2TFVQHX","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"A high-precision mechanical absolute-rotation sensor","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["physics.geo-ph"],"primary_cat":"physics.ins-det","authors_text":"Charles A. Hagedorn, Jens H. Gundlach, Krishna Venkateswara, Matthew D. Turner, Trevor Arp","submitted_at":"2014-01-16T18:57:48Z","abstract_excerpt":"We have developed a mechanical absolute-rotation sensor capable of resolving ground rotation angle of less than 1 nrad$/\\sqrt{\\text{Hz}}$ above $30$ mHz and 0.2 nrad$/\\sqrt{\\text{Hz}}$ above $100$ mHz about a single horizontal axis. The device consists of a meter-scale beam balance, suspended by a pair of flexures, with a resonance frequency of 10.8 mHz. The center of mass is located 3 $\\mu$m above the pivot, giving an excellent horizontal displacement rejection of better than $3\\times10^{-5}$ rad/m. The angle of the beam is read out optically using a high-sensitivity autocollimator. We have a"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1401.4412","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":"2026-05-18T03:00:48Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"G3+G7AjvapqLmM6CNh6ZKxNdqpa0XxsT/2gzILM4TWAGqvxMueBvxbEKH+zSPHRZQ9ERMuWErrfA6v9uyAE7BQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-02T00:21:23.587294Z"},"content_sha256":"6024647525dd74114d0af0cecda71c46be17b3ea50d51fb4190e11c8715eff16","schema_version":"1.0","event_id":"sha256:6024647525dd74114d0af0cecda71c46be17b3ea50d51fb4190e11c8715eff16"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/RDLFF5HV6YMMQEEH6XD2TFVQHX/bundle.json","state_url":"https://pith.science/pith/RDLFF5HV6YMMQEEH6XD2TFVQHX/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/RDLFF5HV6YMMQEEH6XD2TFVQHX/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":"2026-06-02T00:21:23Z","links":{"resolver":"https://pith.science/pith/RDLFF5HV6YMMQEEH6XD2TFVQHX","bundle":"https://pith.science/pith/RDLFF5HV6YMMQEEH6XD2TFVQHX/bundle.json","state":"https://pith.science/pith/RDLFF5HV6YMMQEEH6XD2TFVQHX/state.json","well_known_bundle":"https://pith.science/.well-known/pith/RDLFF5HV6YMMQEEH6XD2TFVQHX/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2014:RDLFF5HV6YMMQEEH6XD2TFVQHX","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":"ba4b53f353578d6d80b385971c007115bc63c7e3124b2ee635ee578ab183fd04","cross_cats_sorted":["physics.geo-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2014-01-16T18:57:48Z","title_canon_sha256":"d075ea3ae13674e74258f0b06425196ea37abe267fde7262948cbe2af605ad40"},"schema_version":"1.0","source":{"id":"1401.4412","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1401.4412","created_at":"2026-05-18T03:00:48Z"},{"alias_kind":"arxiv_version","alias_value":"1401.4412v1","created_at":"2026-05-18T03:00:48Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1401.4412","created_at":"2026-05-18T03:00:48Z"},{"alias_kind":"pith_short_12","alias_value":"RDLFF5HV6YMM","created_at":"2026-05-18T12:28:46Z"},{"alias_kind":"pith_short_16","alias_value":"RDLFF5HV6YMMQEEH","created_at":"2026-05-18T12:28:46Z"},{"alias_kind":"pith_short_8","alias_value":"RDLFF5HV","created_at":"2026-05-18T12:28:46Z"}],"graph_snapshots":[{"event_id":"sha256:6024647525dd74114d0af0cecda71c46be17b3ea50d51fb4190e11c8715eff16","target":"graph","created_at":"2026-05-18T03:00:48Z","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 have developed a mechanical absolute-rotation sensor capable of resolving ground rotation angle of less than 1 nrad$/\\sqrt{\\text{Hz}}$ above $30$ mHz and 0.2 nrad$/\\sqrt{\\text{Hz}}$ above $100$ mHz about a single horizontal axis. The device consists of a meter-scale beam balance, suspended by a pair of flexures, with a resonance frequency of 10.8 mHz. The center of mass is located 3 $\\mu$m above the pivot, giving an excellent horizontal displacement rejection of better than $3\\times10^{-5}$ rad/m. The angle of the beam is read out optically using a high-sensitivity autocollimator. We have a","authors_text":"Charles A. Hagedorn, Jens H. Gundlach, Krishna Venkateswara, Matthew D. Turner, Trevor Arp","cross_cats":["physics.geo-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2014-01-16T18:57:48Z","title":"A high-precision mechanical absolute-rotation sensor"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1401.4412","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":"sha256:69ba3f7b23cbfe279cbafbbe391c7d6b75cdbefdb9bd17106f6c98f4ea2fedaa","target":"record","created_at":"2026-05-18T03:00:48Z","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":"ba4b53f353578d6d80b385971c007115bc63c7e3124b2ee635ee578ab183fd04","cross_cats_sorted":["physics.geo-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2014-01-16T18:57:48Z","title_canon_sha256":"d075ea3ae13674e74258f0b06425196ea37abe267fde7262948cbe2af605ad40"},"schema_version":"1.0","source":{"id":"1401.4412","kind":"arxiv","version":1}},"canonical_sha256":"88d652f4f5f618c81087f5c7a996b03de270a4daa247b74db7889c7ee88cc53c","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"88d652f4f5f618c81087f5c7a996b03de270a4daa247b74db7889c7ee88cc53c","first_computed_at":"2026-05-18T03:00:48.857055Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:00:48.857055Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"rSzm8934uW2YyrkhstW99x7xJHHvTe7R4cTcNMZrR2wrnAz4bT/+BiXh8dEVSa5wL79GWwUToBQpulRa5VTxBw==","signature_status":"signed_v1","signed_at":"2026-05-18T03:00:48.857843Z","signed_message":"canonical_sha256_bytes"},"source_id":"1401.4412","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:69ba3f7b23cbfe279cbafbbe391c7d6b75cdbefdb9bd17106f6c98f4ea2fedaa","sha256:6024647525dd74114d0af0cecda71c46be17b3ea50d51fb4190e11c8715eff16"],"state_sha256":"ad81a350f73ff8a166c4c2a1b7f43d9cebaf89c325d30267b1e8f1b9362547e9"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"SaNbjgKrWHI3yJYwwtQ1Gf5cV19jWjkn7cfT8Yj/0gupw9D/x2KWeqKZgMo/v1Q4a/NsvQWRSgL+5yQx/XvvAg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-02T00:21:23.589210Z","bundle_sha256":"7b1e7b7ea25aa0e1274248c19feab319c7b5bfb98172fe4f3939d1f57b92c484"}}