{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2006:C3JFYZFUJNXBAPZW2I2J747Q7D","short_pith_number":"pith:C3JFYZFU","canonical_record":{"source":{"id":"astro-ph/0601517","kind":"arxiv","version":2},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2006-01-24T20:57:13Z","cross_cats_sorted":[],"title_canon_sha256":"2674b130c1b94e8c9bb6add53e82c83ca694cd60ec9b41f23d628596825c96ff","abstract_canon_sha256":"23194c661737db4946b8b360accf02a0abc6b9f66c0bf9f8a1e3c46a081039a3"},"schema_version":"1.0"},"canonical_sha256":"16d25c64b44b6e103f36d2349ff3f0f8fb144724c2fb36d358791fcac08ad634","source":{"kind":"arxiv","id":"astro-ph/0601517","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/0601517","created_at":"2026-07-04T15:17:29Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0601517v2","created_at":"2026-07-04T15:17:29Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0601517","created_at":"2026-07-04T15:17:29Z"},{"alias_kind":"pith_short_12","alias_value":"C3JFYZFUJNXB","created_at":"2026-07-04T15:17:29Z"},{"alias_kind":"pith_short_16","alias_value":"C3JFYZFUJNXBAPZW","created_at":"2026-07-04T15:17:29Z"},{"alias_kind":"pith_short_8","alias_value":"C3JFYZFU","created_at":"2026-07-04T15:17:29Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2006:C3JFYZFUJNXBAPZW2I2J747Q7D","target":"record","payload":{"canonical_record":{"source":{"id":"astro-ph/0601517","kind":"arxiv","version":2},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2006-01-24T20:57:13Z","cross_cats_sorted":[],"title_canon_sha256":"2674b130c1b94e8c9bb6add53e82c83ca694cd60ec9b41f23d628596825c96ff","abstract_canon_sha256":"23194c661737db4946b8b360accf02a0abc6b9f66c0bf9f8a1e3c46a081039a3"},"schema_version":"1.0"},"canonical_sha256":"16d25c64b44b6e103f36d2349ff3f0f8fb144724c2fb36d358791fcac08ad634","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-04T15:17:29.704508Z","signature_b64":"DPq0Z7CUYwlbU16KOmureMCl7NdarI0WjIctlXDUDyJmW7azcNEgaiFhLpxHQyw3BSxROXCUW69XxK8vwU7cDA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"16d25c64b44b6e103f36d2349ff3f0f8fb144724c2fb36d358791fcac08ad634","last_reissued_at":"2026-07-04T15:17:29.704090Z","signature_status":"signed_v1","first_computed_at":"2026-07-04T15:17:29.704090Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"astro-ph/0601517","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":"2026-07-04T15:17:29Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"kjfqRDGzwQSg6IuUAPJxIy6z1qqTREgvy20wS7M+xmf7gCEdjlqvpiYOkX/Qa433E35i7cdAix/jTLQwz/JABA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-06T08:46:47.075107Z"},"content_sha256":"3bcbd42b959afefe4effcb4d6ad63b21b8e2383bc4c6b7fc223334d800ee244f","schema_version":"1.0","event_id":"sha256:3bcbd42b959afefe4effcb4d6ad63b21b8e2383bc4c6b7fc223334d800ee244f"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2006:C3JFYZFUJNXBAPZW2I2J747Q7D","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Stable Models of superacceleration","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"Arvind Rajaraman, Manoj Kaplinghat","submitted_at":"2006-01-24T20:57:13Z","abstract_excerpt":"We discuss an instability in a large class of models where dark energy is coupled to matter. In these models the mass of the scalar field is much larger than the expansion rate of the Universe. We find models in which this instability is absent, and show that these models generically predict an apparent equation of state for dark energy smaller than -1, i.e., superacceleration. These models have no acausal behavior or ghosts."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0601517","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/0601517/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":"2026-07-04T15:17:29Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"YA1YUONtqMcdA3OL+TzT4StO/Fwb9H9pqozuMAwxOz/1wTzGvWClJZ3tGtxd2MSse1TOIjSLrCY1nyfhsgKCDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-06T08:46:47.075764Z"},"content_sha256":"9901bd38ba6cf6ce06e45c9a12a196cdd6726331debf9a16d3fa5d81ddb64c1d","schema_version":"1.0","event_id":"sha256:9901bd38ba6cf6ce06e45c9a12a196cdd6726331debf9a16d3fa5d81ddb64c1d"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/C3JFYZFUJNXBAPZW2I2J747Q7D/bundle.json","state_url":"https://pith.science/pith/C3JFYZFUJNXBAPZW2I2J747Q7D/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/C3JFYZFUJNXBAPZW2I2J747Q7D/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":"2026-08-06T08:46:47Z","links":{"resolver":"https://pith.science/pith/C3JFYZFUJNXBAPZW2I2J747Q7D","bundle":"https://pith.science/pith/C3JFYZFUJNXBAPZW2I2J747Q7D/bundle.json","state":"https://pith.science/pith/C3JFYZFUJNXBAPZW2I2J747Q7D/state.json","well_known_bundle":"https://pith.science/.well-known/pith/C3JFYZFUJNXBAPZW2I2J747Q7D/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2006:C3JFYZFUJNXBAPZW2I2J747Q7D","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":"23194c661737db4946b8b360accf02a0abc6b9f66c0bf9f8a1e3c46a081039a3","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2006-01-24T20:57:13Z","title_canon_sha256":"2674b130c1b94e8c9bb6add53e82c83ca694cd60ec9b41f23d628596825c96ff"},"schema_version":"1.0","source":{"id":"astro-ph/0601517","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/0601517","created_at":"2026-07-04T15:17:29Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0601517v2","created_at":"2026-07-04T15:17:29Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0601517","created_at":"2026-07-04T15:17:29Z"},{"alias_kind":"pith_short_12","alias_value":"C3JFYZFUJNXB","created_at":"2026-07-04T15:17:29Z"},{"alias_kind":"pith_short_16","alias_value":"C3JFYZFUJNXBAPZW","created_at":"2026-07-04T15:17:29Z"},{"alias_kind":"pith_short_8","alias_value":"C3JFYZFU","created_at":"2026-07-04T15:17:29Z"}],"graph_snapshots":[{"event_id":"sha256:9901bd38ba6cf6ce06e45c9a12a196cdd6726331debf9a16d3fa5d81ddb64c1d","target":"graph","created_at":"2026-07-04T15:17:29Z","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/0601517/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We discuss an instability in a large class of models where dark energy is coupled to matter. In these models the mass of the scalar field is much larger than the expansion rate of the Universe. We find models in which this instability is absent, and show that these models generically predict an apparent equation of state for dark energy smaller than -1, i.e., superacceleration. These models have no acausal behavior or ghosts.","authors_text":"Arvind Rajaraman, Manoj Kaplinghat","cross_cats":[],"headline":"","license":"","primary_cat":"astro-ph","submitted_at":"2006-01-24T20:57:13Z","title":"Stable Models of superacceleration"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0601517","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":"sha256:3bcbd42b959afefe4effcb4d6ad63b21b8e2383bc4c6b7fc223334d800ee244f","target":"record","created_at":"2026-07-04T15:17:29Z","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":"23194c661737db4946b8b360accf02a0abc6b9f66c0bf9f8a1e3c46a081039a3","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2006-01-24T20:57:13Z","title_canon_sha256":"2674b130c1b94e8c9bb6add53e82c83ca694cd60ec9b41f23d628596825c96ff"},"schema_version":"1.0","source":{"id":"astro-ph/0601517","kind":"arxiv","version":2}},"canonical_sha256":"16d25c64b44b6e103f36d2349ff3f0f8fb144724c2fb36d358791fcac08ad634","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"16d25c64b44b6e103f36d2349ff3f0f8fb144724c2fb36d358791fcac08ad634","first_computed_at":"2026-07-04T15:17:29.704090Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T15:17:29.704090Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"DPq0Z7CUYwlbU16KOmureMCl7NdarI0WjIctlXDUDyJmW7azcNEgaiFhLpxHQyw3BSxROXCUW69XxK8vwU7cDA==","signature_status":"signed_v1","signed_at":"2026-07-04T15:17:29.704508Z","signed_message":"canonical_sha256_bytes"},"source_id":"astro-ph/0601517","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:3bcbd42b959afefe4effcb4d6ad63b21b8e2383bc4c6b7fc223334d800ee244f","sha256:9901bd38ba6cf6ce06e45c9a12a196cdd6726331debf9a16d3fa5d81ddb64c1d"],"state_sha256":"af864f42e5b695a09bfc19141267aefc40e91d9be06c5a58502388eab1f6a788"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"7OJQ23czDxMycOFSOtrP6nih1jMk1LtyvFVUrPsRsEM7wIO4c3iolHs3Wcsjy0ViXp1PdGYnT+kxXaeUB024Aw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-06T08:46:47.081032Z","bundle_sha256":"adb8a8e584fa4a046d69f7a78c4012ffa01357249c33d3c408f9367c2bf45ba4"}}