{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2012:PHF6S442VO5HPPYHRECKGOSO3Q","short_pith_number":"pith:PHF6S442","canonical_record":{"source":{"id":"1210.1521","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2012-10-04T17:13:19Z","cross_cats_sorted":["gr-qc"],"title_canon_sha256":"2cfe95ec6841797b6368e3e706dc9bb7c40620c1b374f5ed7c6c1f942da785e3","abstract_canon_sha256":"9e74bef854811a852c89f126db5686467d77e3e65c3a675fada2ed0bdf61d264"},"schema_version":"1.0"},"canonical_sha256":"79cbe9739aabba77bf078904a33a4edc1e59cdef053d2ac8c6913a6b0646ab70","source":{"kind":"arxiv","id":"1210.1521","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1210.1521","created_at":"2026-05-18T03:36:57Z"},{"alias_kind":"arxiv_version","alias_value":"1210.1521v2","created_at":"2026-05-18T03:36:57Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1210.1521","created_at":"2026-05-18T03:36:57Z"},{"alias_kind":"pith_short_12","alias_value":"PHF6S442VO5H","created_at":"2026-05-18T12:27:18Z"},{"alias_kind":"pith_short_16","alias_value":"PHF6S442VO5HPPYH","created_at":"2026-05-18T12:27:18Z"},{"alias_kind":"pith_short_8","alias_value":"PHF6S442","created_at":"2026-05-18T12:27:18Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2012:PHF6S442VO5HPPYHRECKGOSO3Q","target":"record","payload":{"canonical_record":{"source":{"id":"1210.1521","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2012-10-04T17:13:19Z","cross_cats_sorted":["gr-qc"],"title_canon_sha256":"2cfe95ec6841797b6368e3e706dc9bb7c40620c1b374f5ed7c6c1f942da785e3","abstract_canon_sha256":"9e74bef854811a852c89f126db5686467d77e3e65c3a675fada2ed0bdf61d264"},"schema_version":"1.0"},"canonical_sha256":"79cbe9739aabba77bf078904a33a4edc1e59cdef053d2ac8c6913a6b0646ab70","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:36:57.944159Z","signature_b64":"OXNGujnIqyJmInzzinXrE1RHNLJiLPeKgfjxzho4VeLfui74yvrKtfSCKHn+/Ghf0mIo4FPOY16GnZ60PBjuAw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"79cbe9739aabba77bf078904a33a4edc1e59cdef053d2ac8c6913a6b0646ab70","last_reissued_at":"2026-05-18T03:36:57.943574Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:36:57.943574Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1210.1521","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":"2026-05-18T03:36:57Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"knNaJRR8r0SFLH/oaK45E+WSeedNebPmrfVmKAtYdDbO+RTcijK74DCm4mqG0qmPV2wNcXEVv19b5xkbwxiHAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-31T18:23:43.470130Z"},"content_sha256":"757f35ea904ef084ceb41b752f70f91c41296bd9d36498ed6708d57c17ac20e2","schema_version":"1.0","event_id":"sha256:757f35ea904ef084ceb41b752f70f91c41296bd9d36498ed6708d57c17ac20e2"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2012:PHF6S442VO5HPPYHRECKGOSO3Q","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Cosmology with Eddington-inspired Gravity","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["gr-qc"],"primary_cat":"astro-ph.CO","authors_text":"James H. C. Scargill, Maximo Banados, Pedro G. Ferreira","submitted_at":"2012-10-04T17:13:19Z","abstract_excerpt":"We study the dynamics of homogeneous, isotropic universes which are governed by the Eddington-inspired alternative theory of gravity which has a single extra parameter, $\\kappa$. Previous results showing singularity-avoiding behaviour for $\\kappa > 0$ are found to be upheld in the case of domination by a perfect fluid with equation of state parameter $w > 0$. The range $-1/3 < w < 0$ is found to lead to universes which experience unbounded expansion rate whilst still at a finite density. In the case $\\kappa < 0$ the addition of spatial curvature is shown to lead to the possibility of oscillati"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1210.1521","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":"2026-05-18T03:36:57Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"sbKGXZioi/FWNuSmsbq100MzvL7tTwei4cR5Ba66+dYMM2N9Ttl07ClueGuucO6ZLxo91UXHsaJSFAH3lnLjCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-31T18:23:43.470886Z"},"content_sha256":"f30357eb1d82a6bc7122ab15b60cd390b0b1ac0e494af7c227a55eab24d653ae","schema_version":"1.0","event_id":"sha256:f30357eb1d82a6bc7122ab15b60cd390b0b1ac0e494af7c227a55eab24d653ae"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/PHF6S442VO5HPPYHRECKGOSO3Q/bundle.json","state_url":"https://pith.science/pith/PHF6S442VO5HPPYHRECKGOSO3Q/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/PHF6S442VO5HPPYHRECKGOSO3Q/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":"2026-05-31T18:23:43Z","links":{"resolver":"https://pith.science/pith/PHF6S442VO5HPPYHRECKGOSO3Q","bundle":"https://pith.science/pith/PHF6S442VO5HPPYHRECKGOSO3Q/bundle.json","state":"https://pith.science/pith/PHF6S442VO5HPPYHRECKGOSO3Q/state.json","well_known_bundle":"https://pith.science/.well-known/pith/PHF6S442VO5HPPYHRECKGOSO3Q/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:PHF6S442VO5HPPYHRECKGOSO3Q","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":"9e74bef854811a852c89f126db5686467d77e3e65c3a675fada2ed0bdf61d264","cross_cats_sorted":["gr-qc"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2012-10-04T17:13:19Z","title_canon_sha256":"2cfe95ec6841797b6368e3e706dc9bb7c40620c1b374f5ed7c6c1f942da785e3"},"schema_version":"1.0","source":{"id":"1210.1521","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1210.1521","created_at":"2026-05-18T03:36:57Z"},{"alias_kind":"arxiv_version","alias_value":"1210.1521v2","created_at":"2026-05-18T03:36:57Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1210.1521","created_at":"2026-05-18T03:36:57Z"},{"alias_kind":"pith_short_12","alias_value":"PHF6S442VO5H","created_at":"2026-05-18T12:27:18Z"},{"alias_kind":"pith_short_16","alias_value":"PHF6S442VO5HPPYH","created_at":"2026-05-18T12:27:18Z"},{"alias_kind":"pith_short_8","alias_value":"PHF6S442","created_at":"2026-05-18T12:27:18Z"}],"graph_snapshots":[{"event_id":"sha256:f30357eb1d82a6bc7122ab15b60cd390b0b1ac0e494af7c227a55eab24d653ae","target":"graph","created_at":"2026-05-18T03:36:57Z","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 study the dynamics of homogeneous, isotropic universes which are governed by the Eddington-inspired alternative theory of gravity which has a single extra parameter, $\\kappa$. Previous results showing singularity-avoiding behaviour for $\\kappa > 0$ are found to be upheld in the case of domination by a perfect fluid with equation of state parameter $w > 0$. The range $-1/3 < w < 0$ is found to lead to universes which experience unbounded expansion rate whilst still at a finite density. In the case $\\kappa < 0$ the addition of spatial curvature is shown to lead to the possibility of oscillati","authors_text":"James H. C. Scargill, Maximo Banados, Pedro G. Ferreira","cross_cats":["gr-qc"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2012-10-04T17:13:19Z","title":"Cosmology with Eddington-inspired Gravity"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1210.1521","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":"sha256:757f35ea904ef084ceb41b752f70f91c41296bd9d36498ed6708d57c17ac20e2","target":"record","created_at":"2026-05-18T03:36:57Z","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":"9e74bef854811a852c89f126db5686467d77e3e65c3a675fada2ed0bdf61d264","cross_cats_sorted":["gr-qc"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2012-10-04T17:13:19Z","title_canon_sha256":"2cfe95ec6841797b6368e3e706dc9bb7c40620c1b374f5ed7c6c1f942da785e3"},"schema_version":"1.0","source":{"id":"1210.1521","kind":"arxiv","version":2}},"canonical_sha256":"79cbe9739aabba77bf078904a33a4edc1e59cdef053d2ac8c6913a6b0646ab70","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"79cbe9739aabba77bf078904a33a4edc1e59cdef053d2ac8c6913a6b0646ab70","first_computed_at":"2026-05-18T03:36:57.943574Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:36:57.943574Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"OXNGujnIqyJmInzzinXrE1RHNLJiLPeKgfjxzho4VeLfui74yvrKtfSCKHn+/Ghf0mIo4FPOY16GnZ60PBjuAw==","signature_status":"signed_v1","signed_at":"2026-05-18T03:36:57.944159Z","signed_message":"canonical_sha256_bytes"},"source_id":"1210.1521","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:757f35ea904ef084ceb41b752f70f91c41296bd9d36498ed6708d57c17ac20e2","sha256:f30357eb1d82a6bc7122ab15b60cd390b0b1ac0e494af7c227a55eab24d653ae"],"state_sha256":"9e3451f0737f46f80ee1f2f4fcf3723d8c42cfacdee8567ab93b2f734c0fb960"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"xapwBfCBbkJ/uAHVypt14AK+1U/u7/poouXnaGlpCK8vJXKMfYNWyVfA6X8HKh4+PKBYc7EFhWRjkX/H2KGXCA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-31T18:23:43.474367Z","bundle_sha256":"b880e48b7daea229b4ed2b9977443c97a43b38fb52244c651d4ea164af076be5"}}