{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2009:K6YM4DTDWZAWWEIO4YL7LPLLDA","short_pith_number":"pith:K6YM4DTD","canonical_record":{"source":{"id":"0901.1927","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2009-01-14T04:14:14Z","cross_cats_sorted":[],"title_canon_sha256":"91aabf567e42aeeb3d114051b6afe64e9ea3622afa7435030dad974cd29316f5","abstract_canon_sha256":"5c7c173f4a232727b3883781b7e7c212a1d2c11945ced8562b16f1e242a5aa06"},"schema_version":"1.0"},"canonical_sha256":"57b0ce0e63b6416b110ee617f5bd6b1825d347cf8be12eed00253aaa95a5e059","source":{"kind":"arxiv","id":"0901.1927","version":3},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0901.1927","created_at":"2026-05-18T02:52:40Z"},{"alias_kind":"arxiv_version","alias_value":"0901.1927v3","created_at":"2026-05-18T02:52:40Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0901.1927","created_at":"2026-05-18T02:52:40Z"},{"alias_kind":"pith_short_12","alias_value":"K6YM4DTDWZAW","created_at":"2026-05-18T12:26:00Z"},{"alias_kind":"pith_short_16","alias_value":"K6YM4DTDWZAWWEIO","created_at":"2026-05-18T12:26:00Z"},{"alias_kind":"pith_short_8","alias_value":"K6YM4DTD","created_at":"2026-05-18T12:26:00Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2009:K6YM4DTDWZAWWEIO4YL7LPLLDA","target":"record","payload":{"canonical_record":{"source":{"id":"0901.1927","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2009-01-14T04:14:14Z","cross_cats_sorted":[],"title_canon_sha256":"91aabf567e42aeeb3d114051b6afe64e9ea3622afa7435030dad974cd29316f5","abstract_canon_sha256":"5c7c173f4a232727b3883781b7e7c212a1d2c11945ced8562b16f1e242a5aa06"},"schema_version":"1.0"},"canonical_sha256":"57b0ce0e63b6416b110ee617f5bd6b1825d347cf8be12eed00253aaa95a5e059","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:52:40.222130Z","signature_b64":"CL0ncPzi4XrSujtHo0XQWhGSa1ZcX5FCo2nUMln24pQoeA9/ro/lJ5E2xBV7YKTE31zwPamOg4AsW7ItnqXTBw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"57b0ce0e63b6416b110ee617f5bd6b1825d347cf8be12eed00253aaa95a5e059","last_reissued_at":"2026-05-18T02:52:40.221672Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:52:40.221672Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"0901.1927","source_version":3,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T02:52:40Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"BYsNIDMNP4yz+4Iwxvff8XiF3r5Yhyc3x4mNjsru6UGOzvu4zHogXLQzzsNs36uvkyYo4X+YgV/ncZxLJwaHCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-19T08:23:23.043155Z"},"content_sha256":"715853716c6727c8feee96f7af35a2509aebe4f0ac7ad6944a792816cd128f9f","schema_version":"1.0","event_id":"sha256:715853716c6727c8feee96f7af35a2509aebe4f0ac7ad6944a792816cd128f9f"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2009:K6YM4DTDWZAWWEIO4YL7LPLLDA","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Satellite galaxy velocity dispersions in the SDSS and modified gravity models","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.CO","authors_text":"J. W. Moffat, V. T. Toth","submitted_at":"2009-01-14T04:14:14Z","abstract_excerpt":"The Sloan Digital Sky Survey (SDSS) provides data on several hundred thousand galaxies. Precise location of these galaxies in the sky, along with information about their luminosities and line-of-sight (Doppler) velocities allows one to construct a three-dimensional map of their location and estimate their line-of-sight velocity dispersion. This information, in principle, allows one to test dynamical gravity models, specifically models of satellite galaxy velocity dispersions near massive hosts. A key difficulty is the separation of true satellites from interlopers. We sidestep this problem by "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0901.1927","kind":"arxiv","version":3},"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":"2026-05-18T02:52:40Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"GehHI+7cbPS3H2BzCISCG8WkbRH0/FQtFuPAIFfFLSRMwPAOAYxATh0JeMPb0mMpIjb22ejKouViKd+cFawWBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-19T08:23:23.043710Z"},"content_sha256":"c4eae1870b21d7716f68f823bd8ebf305533835e76424f0932766e34c72b471e","schema_version":"1.0","event_id":"sha256:c4eae1870b21d7716f68f823bd8ebf305533835e76424f0932766e34c72b471e"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/K6YM4DTDWZAWWEIO4YL7LPLLDA/bundle.json","state_url":"https://pith.science/pith/K6YM4DTDWZAWWEIO4YL7LPLLDA/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/K6YM4DTDWZAWWEIO4YL7LPLLDA/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":"2026-05-19T08:23:23Z","links":{"resolver":"https://pith.science/pith/K6YM4DTDWZAWWEIO4YL7LPLLDA","bundle":"https://pith.science/pith/K6YM4DTDWZAWWEIO4YL7LPLLDA/bundle.json","state":"https://pith.science/pith/K6YM4DTDWZAWWEIO4YL7LPLLDA/state.json","well_known_bundle":"https://pith.science/.well-known/pith/K6YM4DTDWZAWWEIO4YL7LPLLDA/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2009:K6YM4DTDWZAWWEIO4YL7LPLLDA","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":"5c7c173f4a232727b3883781b7e7c212a1d2c11945ced8562b16f1e242a5aa06","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2009-01-14T04:14:14Z","title_canon_sha256":"91aabf567e42aeeb3d114051b6afe64e9ea3622afa7435030dad974cd29316f5"},"schema_version":"1.0","source":{"id":"0901.1927","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0901.1927","created_at":"2026-05-18T02:52:40Z"},{"alias_kind":"arxiv_version","alias_value":"0901.1927v3","created_at":"2026-05-18T02:52:40Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0901.1927","created_at":"2026-05-18T02:52:40Z"},{"alias_kind":"pith_short_12","alias_value":"K6YM4DTDWZAW","created_at":"2026-05-18T12:26:00Z"},{"alias_kind":"pith_short_16","alias_value":"K6YM4DTDWZAWWEIO","created_at":"2026-05-18T12:26:00Z"},{"alias_kind":"pith_short_8","alias_value":"K6YM4DTD","created_at":"2026-05-18T12:26:00Z"}],"graph_snapshots":[{"event_id":"sha256:c4eae1870b21d7716f68f823bd8ebf305533835e76424f0932766e34c72b471e","target":"graph","created_at":"2026-05-18T02:52:40Z","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":"The Sloan Digital Sky Survey (SDSS) provides data on several hundred thousand galaxies. Precise location of these galaxies in the sky, along with information about their luminosities and line-of-sight (Doppler) velocities allows one to construct a three-dimensional map of their location and estimate their line-of-sight velocity dispersion. This information, in principle, allows one to test dynamical gravity models, specifically models of satellite galaxy velocity dispersions near massive hosts. A key difficulty is the separation of true satellites from interlopers. We sidestep this problem by ","authors_text":"J. W. Moffat, V. T. Toth","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2009-01-14T04:14:14Z","title":"Satellite galaxy velocity dispersions in the SDSS and modified gravity models"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0901.1927","kind":"arxiv","version":3},"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":"sha256:715853716c6727c8feee96f7af35a2509aebe4f0ac7ad6944a792816cd128f9f","target":"record","created_at":"2026-05-18T02:52:40Z","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":"5c7c173f4a232727b3883781b7e7c212a1d2c11945ced8562b16f1e242a5aa06","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2009-01-14T04:14:14Z","title_canon_sha256":"91aabf567e42aeeb3d114051b6afe64e9ea3622afa7435030dad974cd29316f5"},"schema_version":"1.0","source":{"id":"0901.1927","kind":"arxiv","version":3}},"canonical_sha256":"57b0ce0e63b6416b110ee617f5bd6b1825d347cf8be12eed00253aaa95a5e059","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"57b0ce0e63b6416b110ee617f5bd6b1825d347cf8be12eed00253aaa95a5e059","first_computed_at":"2026-05-18T02:52:40.221672Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:52:40.221672Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"CL0ncPzi4XrSujtHo0XQWhGSa1ZcX5FCo2nUMln24pQoeA9/ro/lJ5E2xBV7YKTE31zwPamOg4AsW7ItnqXTBw==","signature_status":"signed_v1","signed_at":"2026-05-18T02:52:40.222130Z","signed_message":"canonical_sha256_bytes"},"source_id":"0901.1927","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:715853716c6727c8feee96f7af35a2509aebe4f0ac7ad6944a792816cd128f9f","sha256:c4eae1870b21d7716f68f823bd8ebf305533835e76424f0932766e34c72b471e"],"state_sha256":"a5f771601af5d2465408e87a053266c9db0caeafc297c2c89cda1b052dea9d86"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"/Le53uCbWTgRWn6C92OKmC4LLX9/je8ETImPzwB7NYzvgZbUEKrEhTokqnys5A9C2aCxyOMyeRSc7VHRPtJDCg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-19T08:23:23.046416Z","bundle_sha256":"4637f325c087c443580692a6e374baa36f4501d01c5937769671a09d41fa4b57"}}