{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2015:I7UBR2BBDBCSHQMUGEA7DVX5FA","short_pith_number":"pith:I7UBR2BB","canonical_record":{"source":{"id":"1504.06885","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2015-04-26T22:36:15Z","cross_cats_sorted":[],"title_canon_sha256":"81c14646ee7d29a744ca4545a1c80e27acb212f44e7b5958739928b4cd977c6f","abstract_canon_sha256":"31c0e3a5ac59ead631dab7e0e30b0e5db3c74f7536171980ed7716a839c3217d"},"schema_version":"1.0"},"canonical_sha256":"47e818e821184523c1943101f1d6fd2803a0fa6a672f27b9d4254329dbf1c450","source":{"kind":"arxiv","id":"1504.06885","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1504.06885","created_at":"2026-05-18T01:19:03Z"},{"alias_kind":"arxiv_version","alias_value":"1504.06885v1","created_at":"2026-05-18T01:19:03Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1504.06885","created_at":"2026-05-18T01:19:03Z"},{"alias_kind":"pith_short_12","alias_value":"I7UBR2BBDBCS","created_at":"2026-05-18T12:29:25Z"},{"alias_kind":"pith_short_16","alias_value":"I7UBR2BBDBCSHQMU","created_at":"2026-05-18T12:29:25Z"},{"alias_kind":"pith_short_8","alias_value":"I7UBR2BB","created_at":"2026-05-18T12:29:25Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2015:I7UBR2BBDBCSHQMUGEA7DVX5FA","target":"record","payload":{"canonical_record":{"source":{"id":"1504.06885","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2015-04-26T22:36:15Z","cross_cats_sorted":[],"title_canon_sha256":"81c14646ee7d29a744ca4545a1c80e27acb212f44e7b5958739928b4cd977c6f","abstract_canon_sha256":"31c0e3a5ac59ead631dab7e0e30b0e5db3c74f7536171980ed7716a839c3217d"},"schema_version":"1.0"},"canonical_sha256":"47e818e821184523c1943101f1d6fd2803a0fa6a672f27b9d4254329dbf1c450","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:19:03.715003Z","signature_b64":"AE5PqYwJ2vefZPWmedfNX/0W/l1pegN3hsnvT6CEPWX9FUwRW8bEAkQo1E3sItVHDkC7FszHlMlTkrOwswNuAw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"47e818e821184523c1943101f1d6fd2803a0fa6a672f27b9d4254329dbf1c450","last_reissued_at":"2026-05-18T01:19:03.714569Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:19:03.714569Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1504.06885","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":"2026-05-18T01:19:03Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"T26nC2x/O5hOHaxrN6Xw238fwsB6SfG331StoXACbCHngqp6xzAqUur1pdDF6ICc1rWQw8n0P+v2hQR/UokRDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T06:00:43.703292Z"},"content_sha256":"40945c7e14b5ac600cf81ec2133570dda069c93f939c5d4d9efb9bb1c930ab85","schema_version":"1.0","event_id":"sha256:40945c7e14b5ac600cf81ec2133570dda069c93f939c5d4d9efb9bb1c930ab85"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2015:I7UBR2BBDBCSHQMUGEA7DVX5FA","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Searching for Modified Gravity: Scale and Redshift Dependent Constraints from Galaxy Peculiar Velocities","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.CO","authors_text":"Andrew Johnson, Chris Blake, David Parkinson, Jason Dossett, Jun Koda, Shahab Joudaki","submitted_at":"2015-04-26T22:36:15Z","abstract_excerpt":"We present measurements of both scale- and time-dependent deviations from the standard gravitational field equations. These late-time modifications are introduced separately for relativistic and non-relativistic particles, by way of the parameters $G_{\\rm matter}(k,z)$ and $G_{\\rm light}(k,z)$ using two bins in both scale and time, with transition wavenumber $0.01$ Mpc$^{-1}$ and redshift 1. We emphasize the use of two dynamical probes to constrain this set of parameters, galaxy power spectrum multipoles and the direct peculiar velocity power spectrum, which probe fluctuations on different sca"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1504.06885","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":"2026-05-18T01:19:03Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"94pdUmM2b6ojhjlPNxf/Zfvip0wT1TGHltbSstX/XY1o0BFdkY7F3VojLcWPwIfVqb2nNtncrgWxQgbAMg88Bw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T06:00:43.704015Z"},"content_sha256":"4d9b9290cac876b7505d86dcddc1d86de7d55fc5b071255e7b6efb46ac4225b9","schema_version":"1.0","event_id":"sha256:4d9b9290cac876b7505d86dcddc1d86de7d55fc5b071255e7b6efb46ac4225b9"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/I7UBR2BBDBCSHQMUGEA7DVX5FA/bundle.json","state_url":"https://pith.science/pith/I7UBR2BBDBCSHQMUGEA7DVX5FA/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/I7UBR2BBDBCSHQMUGEA7DVX5FA/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":"2026-05-26T06:00:43Z","links":{"resolver":"https://pith.science/pith/I7UBR2BBDBCSHQMUGEA7DVX5FA","bundle":"https://pith.science/pith/I7UBR2BBDBCSHQMUGEA7DVX5FA/bundle.json","state":"https://pith.science/pith/I7UBR2BBDBCSHQMUGEA7DVX5FA/state.json","well_known_bundle":"https://pith.science/.well-known/pith/I7UBR2BBDBCSHQMUGEA7DVX5FA/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:I7UBR2BBDBCSHQMUGEA7DVX5FA","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":"31c0e3a5ac59ead631dab7e0e30b0e5db3c74f7536171980ed7716a839c3217d","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2015-04-26T22:36:15Z","title_canon_sha256":"81c14646ee7d29a744ca4545a1c80e27acb212f44e7b5958739928b4cd977c6f"},"schema_version":"1.0","source":{"id":"1504.06885","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1504.06885","created_at":"2026-05-18T01:19:03Z"},{"alias_kind":"arxiv_version","alias_value":"1504.06885v1","created_at":"2026-05-18T01:19:03Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1504.06885","created_at":"2026-05-18T01:19:03Z"},{"alias_kind":"pith_short_12","alias_value":"I7UBR2BBDBCS","created_at":"2026-05-18T12:29:25Z"},{"alias_kind":"pith_short_16","alias_value":"I7UBR2BBDBCSHQMU","created_at":"2026-05-18T12:29:25Z"},{"alias_kind":"pith_short_8","alias_value":"I7UBR2BB","created_at":"2026-05-18T12:29:25Z"}],"graph_snapshots":[{"event_id":"sha256:4d9b9290cac876b7505d86dcddc1d86de7d55fc5b071255e7b6efb46ac4225b9","target":"graph","created_at":"2026-05-18T01:19:03Z","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 present measurements of both scale- and time-dependent deviations from the standard gravitational field equations. These late-time modifications are introduced separately for relativistic and non-relativistic particles, by way of the parameters $G_{\\rm matter}(k,z)$ and $G_{\\rm light}(k,z)$ using two bins in both scale and time, with transition wavenumber $0.01$ Mpc$^{-1}$ and redshift 1. We emphasize the use of two dynamical probes to constrain this set of parameters, galaxy power spectrum multipoles and the direct peculiar velocity power spectrum, which probe fluctuations on different sca","authors_text":"Andrew Johnson, Chris Blake, David Parkinson, Jason Dossett, Jun Koda, Shahab Joudaki","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2015-04-26T22:36:15Z","title":"Searching for Modified Gravity: Scale and Redshift Dependent Constraints from Galaxy Peculiar Velocities"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1504.06885","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":"sha256:40945c7e14b5ac600cf81ec2133570dda069c93f939c5d4d9efb9bb1c930ab85","target":"record","created_at":"2026-05-18T01:19:03Z","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":"31c0e3a5ac59ead631dab7e0e30b0e5db3c74f7536171980ed7716a839c3217d","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2015-04-26T22:36:15Z","title_canon_sha256":"81c14646ee7d29a744ca4545a1c80e27acb212f44e7b5958739928b4cd977c6f"},"schema_version":"1.0","source":{"id":"1504.06885","kind":"arxiv","version":1}},"canonical_sha256":"47e818e821184523c1943101f1d6fd2803a0fa6a672f27b9d4254329dbf1c450","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"47e818e821184523c1943101f1d6fd2803a0fa6a672f27b9d4254329dbf1c450","first_computed_at":"2026-05-18T01:19:03.714569Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:19:03.714569Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"AE5PqYwJ2vefZPWmedfNX/0W/l1pegN3hsnvT6CEPWX9FUwRW8bEAkQo1E3sItVHDkC7FszHlMlTkrOwswNuAw==","signature_status":"signed_v1","signed_at":"2026-05-18T01:19:03.715003Z","signed_message":"canonical_sha256_bytes"},"source_id":"1504.06885","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:40945c7e14b5ac600cf81ec2133570dda069c93f939c5d4d9efb9bb1c930ab85","sha256:4d9b9290cac876b7505d86dcddc1d86de7d55fc5b071255e7b6efb46ac4225b9"],"state_sha256":"76d5ebfe7b1a9a35030fe0ea5198c0a8275cd8d0d86e8f7028f2d077acc72de7"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"jp7+0k9jZ0Y42bRLLzu/p6w4oFf9EDwKrEewwoOREbBfggP4gt/cshGysUfWo8oq+HEGpfXM91oa0tsyAScbDw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-26T06:00:43.708064Z","bundle_sha256":"ac96076289bf94532eabd2d4ab18620236a44c00c0d80acb780075de5206807a"}}