{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2001:IK7LTATIG4O3SX23PX5OMZLHBP","short_pith_number":"pith:IK7LTATI","canonical_record":{"source":{"id":"astro-ph/0108011","kind":"arxiv","version":2},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2001-08-01T06:42:53Z","cross_cats_sorted":["gr-qc"],"title_canon_sha256":"795b1f8cac4b7f61a0e61876549aa909f6fae13f3e13d10b8577847177daf112","abstract_canon_sha256":"7e4cabe61acfe4470f752b817f1f19178bc342a8fd4e6086748254dbc22da20f"},"schema_version":"1.0"},"canonical_sha256":"42beb98268371db95f5b7dfae665670bd71fa8a342c52bd2f31dd6180c6756c1","source":{"kind":"arxiv","id":"astro-ph/0108011","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/0108011","created_at":"2026-07-04T16:23:48Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0108011v2","created_at":"2026-07-04T16:23:48Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0108011","created_at":"2026-07-04T16:23:48Z"},{"alias_kind":"pith_short_12","alias_value":"IK7LTATIG4O3","created_at":"2026-07-04T16:23:48Z"},{"alias_kind":"pith_short_16","alias_value":"IK7LTATIG4O3SX23","created_at":"2026-07-04T16:23:48Z"},{"alias_kind":"pith_short_8","alias_value":"IK7LTATI","created_at":"2026-07-04T16:23:48Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2001:IK7LTATIG4O3SX23PX5OMZLHBP","target":"record","payload":{"canonical_record":{"source":{"id":"astro-ph/0108011","kind":"arxiv","version":2},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2001-08-01T06:42:53Z","cross_cats_sorted":["gr-qc"],"title_canon_sha256":"795b1f8cac4b7f61a0e61876549aa909f6fae13f3e13d10b8577847177daf112","abstract_canon_sha256":"7e4cabe61acfe4470f752b817f1f19178bc342a8fd4e6086748254dbc22da20f"},"schema_version":"1.0"},"canonical_sha256":"42beb98268371db95f5b7dfae665670bd71fa8a342c52bd2f31dd6180c6756c1","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-04T16:23:48.334942Z","signature_b64":"bCCu1pSSTExTlqEDbkMWktO2n+us5M0lQZi1+oKCwwt1qqwJbnc/7inRwmmcOhsqeBfaE3N3MDTSbf9vu4WBBg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"42beb98268371db95f5b7dfae665670bd71fa8a342c52bd2f31dd6180c6756c1","last_reissued_at":"2026-07-04T16:23:48.334491Z","signature_status":"signed_v1","first_computed_at":"2026-07-04T16:23:48.334491Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"astro-ph/0108011","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":"2026-07-04T16:23:48Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"2IN49StKFPx5Wl3e6LHugpCWGnq4vTdDiIKVF+fBXaEUyjKOEd9RARFtR0F9xdtViv+ELbqfzFRea2MJ+XcBBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-14T14:52:53.319691Z"},"content_sha256":"14222e186f0a0bbf288644c22e36499df305487667a0a6fb5312321f9d92c0c0","schema_version":"1.0","event_id":"sha256:14222e186f0a0bbf288644c22e36499df305487667a0a6fb5312321f9d92c0c0"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2001:IK7LTATIG4O3SX23PX5OMZLHBP","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Possibility of Direct Measurement of the Acceleration of the Universe Using 0.1 Hz Band Laser Interferometer Gravitational Wave Antenna in Space","license":"","headline":"","cross_cats":["gr-qc"],"primary_cat":"astro-ph","authors_text":"Naoki Seto, Seiji Kawamura, Takashi Nakamura","submitted_at":"2001-08-01T06:42:53Z","abstract_excerpt":"It may be possible to construct a laser interferometer gravitational wave antenna in space with $h_{rms}\\sim 10^{-27}$ at $ f\\sim 0.1{\\rm Hz}$ in this century. We show possible specification of this antenna which we call DECIGO. Using this antenna we show that 1) typically $ 10^5$ ($10^4\\sim 10^6$) chirp signals of coalescing binary neutron stars per year may be detected with S/N $\\sim 10^4$. 2) We can directly measure the acceleration of the universe by ten years observation of binary neutron stars. 3) The stochastic gravitational waves of $\\Omega_{GW}\\gsim 10^{-20}$ predicted by the inflatio"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0108011","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/astro-ph/0108011/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":"2026-07-04T16:23:48Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"IblJjYkl8a1qSM1DkDsiEdxlcrInDhCs3NTGBi/sjCTzRP9FQkEQ9L7u6l2xXVL5CvhuU8jN0m/VxA69DNASAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-14T14:52:53.320644Z"},"content_sha256":"77d0a86d6b175a0bae70b6a16f010ff0609c6609507d62f8d630fb34e2fa907c","schema_version":"1.0","event_id":"sha256:77d0a86d6b175a0bae70b6a16f010ff0609c6609507d62f8d630fb34e2fa907c"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/IK7LTATIG4O3SX23PX5OMZLHBP/bundle.json","state_url":"https://pith.science/pith/IK7LTATIG4O3SX23PX5OMZLHBP/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/IK7LTATIG4O3SX23PX5OMZLHBP/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":"2026-08-14T14:52:53Z","links":{"resolver":"https://pith.science/pith/IK7LTATIG4O3SX23PX5OMZLHBP","bundle":"https://pith.science/pith/IK7LTATIG4O3SX23PX5OMZLHBP/bundle.json","state":"https://pith.science/pith/IK7LTATIG4O3SX23PX5OMZLHBP/state.json","well_known_bundle":"https://pith.science/.well-known/pith/IK7LTATIG4O3SX23PX5OMZLHBP/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2001:IK7LTATIG4O3SX23PX5OMZLHBP","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":"7e4cabe61acfe4470f752b817f1f19178bc342a8fd4e6086748254dbc22da20f","cross_cats_sorted":["gr-qc"],"license":"","primary_cat":"astro-ph","submitted_at":"2001-08-01T06:42:53Z","title_canon_sha256":"795b1f8cac4b7f61a0e61876549aa909f6fae13f3e13d10b8577847177daf112"},"schema_version":"1.0","source":{"id":"astro-ph/0108011","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/0108011","created_at":"2026-07-04T16:23:48Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0108011v2","created_at":"2026-07-04T16:23:48Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0108011","created_at":"2026-07-04T16:23:48Z"},{"alias_kind":"pith_short_12","alias_value":"IK7LTATIG4O3","created_at":"2026-07-04T16:23:48Z"},{"alias_kind":"pith_short_16","alias_value":"IK7LTATIG4O3SX23","created_at":"2026-07-04T16:23:48Z"},{"alias_kind":"pith_short_8","alias_value":"IK7LTATI","created_at":"2026-07-04T16:23:48Z"}],"graph_snapshots":[{"event_id":"sha256:77d0a86d6b175a0bae70b6a16f010ff0609c6609507d62f8d630fb34e2fa907c","target":"graph","created_at":"2026-07-04T16:23:48Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/astro-ph/0108011/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"It may be possible to construct a laser interferometer gravitational wave antenna in space with $h_{rms}\\sim 10^{-27}$ at $ f\\sim 0.1{\\rm Hz}$ in this century. We show possible specification of this antenna which we call DECIGO. Using this antenna we show that 1) typically $ 10^5$ ($10^4\\sim 10^6$) chirp signals of coalescing binary neutron stars per year may be detected with S/N $\\sim 10^4$. 2) We can directly measure the acceleration of the universe by ten years observation of binary neutron stars. 3) The stochastic gravitational waves of $\\Omega_{GW}\\gsim 10^{-20}$ predicted by the inflatio","authors_text":"Naoki Seto, Seiji Kawamura, Takashi Nakamura","cross_cats":["gr-qc"],"headline":"","license":"","primary_cat":"astro-ph","submitted_at":"2001-08-01T06:42:53Z","title":"Possibility of Direct Measurement of the Acceleration of the Universe Using 0.1 Hz Band Laser Interferometer Gravitational Wave Antenna in Space"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0108011","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":"sha256:14222e186f0a0bbf288644c22e36499df305487667a0a6fb5312321f9d92c0c0","target":"record","created_at":"2026-07-04T16:23:48Z","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":"7e4cabe61acfe4470f752b817f1f19178bc342a8fd4e6086748254dbc22da20f","cross_cats_sorted":["gr-qc"],"license":"","primary_cat":"astro-ph","submitted_at":"2001-08-01T06:42:53Z","title_canon_sha256":"795b1f8cac4b7f61a0e61876549aa909f6fae13f3e13d10b8577847177daf112"},"schema_version":"1.0","source":{"id":"astro-ph/0108011","kind":"arxiv","version":2}},"canonical_sha256":"42beb98268371db95f5b7dfae665670bd71fa8a342c52bd2f31dd6180c6756c1","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"42beb98268371db95f5b7dfae665670bd71fa8a342c52bd2f31dd6180c6756c1","first_computed_at":"2026-07-04T16:23:48.334491Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T16:23:48.334491Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"bCCu1pSSTExTlqEDbkMWktO2n+us5M0lQZi1+oKCwwt1qqwJbnc/7inRwmmcOhsqeBfaE3N3MDTSbf9vu4WBBg==","signature_status":"signed_v1","signed_at":"2026-07-04T16:23:48.334942Z","signed_message":"canonical_sha256_bytes"},"source_id":"astro-ph/0108011","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:14222e186f0a0bbf288644c22e36499df305487667a0a6fb5312321f9d92c0c0","sha256:77d0a86d6b175a0bae70b6a16f010ff0609c6609507d62f8d630fb34e2fa907c"],"state_sha256":"d1b0d4cae7bca2bdec75d33a1af685c8d0e7861a285074d0261564e164d33788"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"axvD8PxU0IRhzuHW1FPP8XPUTmVYsHcTGDP6PddGD3CFg+fbub7uBwlH0ZIKpi3TVNK0OWhLDGlYOuepihhMAg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-14T14:52:53.329158Z","bundle_sha256":"5119339d6d766b2cdbc9150135e3894b3b7b52d3d974b60afd2af977235b4825"}}