{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:GSYZ5TOPJXZNU24PFSGJQPUNQN","short_pith_number":"pith:GSYZ5TOP","canonical_record":{"source":{"id":"1811.12301","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2018-11-29T16:48:41Z","cross_cats_sorted":["astro-ph.GA","hep-ph"],"title_canon_sha256":"6a14038b4aa4f37a376efb116a1efb1b6a922c419d5210c452a7a805aa613380","abstract_canon_sha256":"fc31a130a85628189d136794f3d4741be2bd4279abd88c538adbf15fc59d0d5d"},"schema_version":"1.0"},"canonical_sha256":"34b19ecdcf4df2da6b8f2c8c983e8d835885d4df923937dec92ecb87e9268af6","source":{"kind":"arxiv","id":"1811.12301","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1811.12301","created_at":"2026-05-17T23:49:33Z"},{"alias_kind":"arxiv_version","alias_value":"1811.12301v2","created_at":"2026-05-17T23:49:33Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1811.12301","created_at":"2026-05-17T23:49:33Z"},{"alias_kind":"pith_short_12","alias_value":"GSYZ5TOPJXZN","created_at":"2026-05-18T12:32:25Z"},{"alias_kind":"pith_short_16","alias_value":"GSYZ5TOPJXZNU24P","created_at":"2026-05-18T12:32:25Z"},{"alias_kind":"pith_short_8","alias_value":"GSYZ5TOP","created_at":"2026-05-18T12:32:25Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:GSYZ5TOPJXZNU24PFSGJQPUNQN","target":"record","payload":{"canonical_record":{"source":{"id":"1811.12301","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2018-11-29T16:48:41Z","cross_cats_sorted":["astro-ph.GA","hep-ph"],"title_canon_sha256":"6a14038b4aa4f37a376efb116a1efb1b6a922c419d5210c452a7a805aa613380","abstract_canon_sha256":"fc31a130a85628189d136794f3d4741be2bd4279abd88c538adbf15fc59d0d5d"},"schema_version":"1.0"},"canonical_sha256":"34b19ecdcf4df2da6b8f2c8c983e8d835885d4df923937dec92ecb87e9268af6","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:49:33.112479Z","signature_b64":"+/Gur7dyClbFHkESRLfaTuKqd2lGYFFi6ovy5bA91BA8G3R7JpqpJF+Znw997WlEIhWr7xcitrGddZKsryH/DQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"34b19ecdcf4df2da6b8f2c8c983e8d835885d4df923937dec92ecb87e9268af6","last_reissued_at":"2026-05-17T23:49:33.111821Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:49:33.111821Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1811.12301","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":"2026-05-17T23:49:33Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"6WgG5+eUBVzhkuA/rcVJoSd8u17QrLk0JQYSeWIy3pOQTe6kiT36hKb/X6RggR8szkcpMYx2PQpbzLgUiuxoCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-30T01:36:44.039492Z"},"content_sha256":"cda36cf6f77f50ad825cc5d985854befb4bc486057d14601387b925959930c49","schema_version":"1.0","event_id":"sha256:cda36cf6f77f50ad825cc5d985854befb4bc486057d14601387b925959930c49"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:GSYZ5TOPJXZNU24PFSGJQPUNQN","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Symmetron Scalar Fields: Modified Gravity, Dark Matter or Both?","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.GA","hep-ph"],"primary_cat":"astro-ph.CO","authors_text":"Christian K\\\"ading, Clare Burrage, Edmund J. Copeland, Peter Millington","submitted_at":"2018-11-29T16:48:41Z","abstract_excerpt":"Scalar fields coupled to gravity through the Ricci scalar have been considered both as dark matter candidates and as a possible modified gravity explanation for galactic dynamics. It has recently been demonstrated that the dynamics of baryonic matter in disk galaxies may be explained, in the absence of particle dark matter, by a symmetron scalar field that mediates a fifth force. The symmetron provides a concrete and archetypal field theory within which to explore how large a role modifications of gravity can play on galactic scales. In this article, we extend these previous works by asking wh"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1811.12301","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":""},"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":"2026-05-17T23:49:33Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"7B3CZrZR4Tj6oEyDEBTap+RPBns8Jj6LmfBfyycTLsYnx6PMgh9+tlm0tDdMpmDWjUGvkIAvtr6bppvPfPlTAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-30T01:36:44.040162Z"},"content_sha256":"2c0785d6f0de40667e680132c56e413753aba1e30c89c5df26aafbba0819e0c6","schema_version":"1.0","event_id":"sha256:2c0785d6f0de40667e680132c56e413753aba1e30c89c5df26aafbba0819e0c6"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/GSYZ5TOPJXZNU24PFSGJQPUNQN/bundle.json","state_url":"https://pith.science/pith/GSYZ5TOPJXZNU24PFSGJQPUNQN/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/GSYZ5TOPJXZNU24PFSGJQPUNQN/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":"2026-05-30T01:36:44Z","links":{"resolver":"https://pith.science/pith/GSYZ5TOPJXZNU24PFSGJQPUNQN","bundle":"https://pith.science/pith/GSYZ5TOPJXZNU24PFSGJQPUNQN/bundle.json","state":"https://pith.science/pith/GSYZ5TOPJXZNU24PFSGJQPUNQN/state.json","well_known_bundle":"https://pith.science/.well-known/pith/GSYZ5TOPJXZNU24PFSGJQPUNQN/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:GSYZ5TOPJXZNU24PFSGJQPUNQN","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":"fc31a130a85628189d136794f3d4741be2bd4279abd88c538adbf15fc59d0d5d","cross_cats_sorted":["astro-ph.GA","hep-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2018-11-29T16:48:41Z","title_canon_sha256":"6a14038b4aa4f37a376efb116a1efb1b6a922c419d5210c452a7a805aa613380"},"schema_version":"1.0","source":{"id":"1811.12301","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1811.12301","created_at":"2026-05-17T23:49:33Z"},{"alias_kind":"arxiv_version","alias_value":"1811.12301v2","created_at":"2026-05-17T23:49:33Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1811.12301","created_at":"2026-05-17T23:49:33Z"},{"alias_kind":"pith_short_12","alias_value":"GSYZ5TOPJXZN","created_at":"2026-05-18T12:32:25Z"},{"alias_kind":"pith_short_16","alias_value":"GSYZ5TOPJXZNU24P","created_at":"2026-05-18T12:32:25Z"},{"alias_kind":"pith_short_8","alias_value":"GSYZ5TOP","created_at":"2026-05-18T12:32:25Z"}],"graph_snapshots":[{"event_id":"sha256:2c0785d6f0de40667e680132c56e413753aba1e30c89c5df26aafbba0819e0c6","target":"graph","created_at":"2026-05-17T23:49:33Z","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":"Scalar fields coupled to gravity through the Ricci scalar have been considered both as dark matter candidates and as a possible modified gravity explanation for galactic dynamics. It has recently been demonstrated that the dynamics of baryonic matter in disk galaxies may be explained, in the absence of particle dark matter, by a symmetron scalar field that mediates a fifth force. The symmetron provides a concrete and archetypal field theory within which to explore how large a role modifications of gravity can play on galactic scales. In this article, we extend these previous works by asking wh","authors_text":"Christian K\\\"ading, Clare Burrage, Edmund J. Copeland, Peter Millington","cross_cats":["astro-ph.GA","hep-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2018-11-29T16:48:41Z","title":"Symmetron Scalar Fields: Modified Gravity, Dark Matter or Both?"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1811.12301","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:cda36cf6f77f50ad825cc5d985854befb4bc486057d14601387b925959930c49","target":"record","created_at":"2026-05-17T23:49:33Z","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":"fc31a130a85628189d136794f3d4741be2bd4279abd88c538adbf15fc59d0d5d","cross_cats_sorted":["astro-ph.GA","hep-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2018-11-29T16:48:41Z","title_canon_sha256":"6a14038b4aa4f37a376efb116a1efb1b6a922c419d5210c452a7a805aa613380"},"schema_version":"1.0","source":{"id":"1811.12301","kind":"arxiv","version":2}},"canonical_sha256":"34b19ecdcf4df2da6b8f2c8c983e8d835885d4df923937dec92ecb87e9268af6","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"34b19ecdcf4df2da6b8f2c8c983e8d835885d4df923937dec92ecb87e9268af6","first_computed_at":"2026-05-17T23:49:33.111821Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:49:33.111821Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"+/Gur7dyClbFHkESRLfaTuKqd2lGYFFi6ovy5bA91BA8G3R7JpqpJF+Znw997WlEIhWr7xcitrGddZKsryH/DQ==","signature_status":"signed_v1","signed_at":"2026-05-17T23:49:33.112479Z","signed_message":"canonical_sha256_bytes"},"source_id":"1811.12301","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:cda36cf6f77f50ad825cc5d985854befb4bc486057d14601387b925959930c49","sha256:2c0785d6f0de40667e680132c56e413753aba1e30c89c5df26aafbba0819e0c6"],"state_sha256":"026121932477101e86a83139b2275899036075b18fe8804c5d44420f3996ad1f"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"IIst1NAEy9IvQnZ8bjd8OS+lcLn1uubVEksKS/qjN3TlrvnVqgT/3A2315ewoo8qB6f8GL5d8qh/rwrOmkLoAA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-30T01:36:44.043669Z","bundle_sha256":"6f1ac95efa4ef4dfabea9b7f6d281c712fe52b9d9fe80b67379d8a58025e1cd1"}}