{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2012:RV3Z42LSB3WY6JJJDRQIUDMQUZ","short_pith_number":"pith:RV3Z42LS","canonical_record":{"source":{"id":"1205.1056","kind":"arxiv","version":5},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2012-05-04T19:12:40Z","cross_cats_sorted":["astro-ph.CO","hep-th"],"title_canon_sha256":"c51f97337c899640b237fca223fadbd86ca786e17d6cd775f391883eeb4f52b4","abstract_canon_sha256":"01558ee8fbf34d98afcc98b0c16d5a01fd0d2c9e94f49641de50609b0c73fae2"},"schema_version":"1.0"},"canonical_sha256":"8d779e69720eed8f25291c608a0d90a657651219291dad58d726c6cf67231eb8","source":{"kind":"arxiv","id":"1205.1056","version":5},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1205.1056","created_at":"2026-05-18T03:39:52Z"},{"alias_kind":"arxiv_version","alias_value":"1205.1056v5","created_at":"2026-05-18T03:39:52Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1205.1056","created_at":"2026-05-18T03:39:52Z"},{"alias_kind":"pith_short_12","alias_value":"RV3Z42LSB3WY","created_at":"2026-05-18T12:27:20Z"},{"alias_kind":"pith_short_16","alias_value":"RV3Z42LSB3WY6JJJ","created_at":"2026-05-18T12:27:20Z"},{"alias_kind":"pith_short_8","alias_value":"RV3Z42LS","created_at":"2026-05-18T12:27:20Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2012:RV3Z42LSB3WY6JJJDRQIUDMQUZ","target":"record","payload":{"canonical_record":{"source":{"id":"1205.1056","kind":"arxiv","version":5},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2012-05-04T19:12:40Z","cross_cats_sorted":["astro-ph.CO","hep-th"],"title_canon_sha256":"c51f97337c899640b237fca223fadbd86ca786e17d6cd775f391883eeb4f52b4","abstract_canon_sha256":"01558ee8fbf34d98afcc98b0c16d5a01fd0d2c9e94f49641de50609b0c73fae2"},"schema_version":"1.0"},"canonical_sha256":"8d779e69720eed8f25291c608a0d90a657651219291dad58d726c6cf67231eb8","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:39:52.959036Z","signature_b64":"5KHku303kp6NE0x+PAehPG6+1YqM+3YpbODbl25xVv+X3k5W3JFn97vV8+Me0/zUQXscmgn3vicCvwOpzQ9tCQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"8d779e69720eed8f25291c608a0d90a657651219291dad58d726c6cf67231eb8","last_reissued_at":"2026-05-18T03:39:52.958633Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:39:52.958633Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1205.1056","source_version":5,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T03:39:52Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"q/hU6LxXO3IAdJWuDxTwVisuGs9WiE5LzM2PorOgwTY395QCs6us1jaum2ZsFtoOuS4jkkshfcXEUL4SemYYAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T18:09:41.609307Z"},"content_sha256":"9969b0954482faca84d29e75469cf7cdd22cdc0857bafb589e36aa31969547b5","schema_version":"1.0","event_id":"sha256:9969b0954482faca84d29e75469cf7cdd22cdc0857bafb589e36aa31969547b5"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2012:RV3Z42LSB3WY6JJJDRQIUDMQUZ","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"A two measure model of dark energy and dark matter","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.CO","hep-th"],"primary_cat":"gr-qc","authors_text":"Douglas Singleton, Eduardo Guendelman, Nattapong Yongram","submitted_at":"2012-05-04T19:12:40Z","abstract_excerpt":"In this work we construct a unified model of dark energy and dark matter. This is done with the following three elements: a gravitating scalar field, phi with a non-conventional kinetic term, as in the string theory tachyon; an arbitrary potential, V(phi); two measures -- a metric measure (sqrt{-g}) and a non-metric measure (Phi). The model has two interesting features: (i) For potentials which are unstable and would give rise to tachyonic scalar field, this model can stabilize the scalar field. (ii) The form of the dark energy and dark matter that results from this model is fairly insensitive"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1205.1056","kind":"arxiv","version":5},"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":"2026-05-18T03:39:52Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"zJrmjtmFpsoAr5Cr7VrNRA7d5OMWL2wifP2iTJ2bbLaJai7TMpxmXvGy87VAhUTj/BA22Vgs1fGrj990UY4HCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T18:09:41.609680Z"},"content_sha256":"ea63343ebe411f6212875cc45b40c2f58793b071e29947e39adc49a5924cd993","schema_version":"1.0","event_id":"sha256:ea63343ebe411f6212875cc45b40c2f58793b071e29947e39adc49a5924cd993"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/RV3Z42LSB3WY6JJJDRQIUDMQUZ/bundle.json","state_url":"https://pith.science/pith/RV3Z42LSB3WY6JJJDRQIUDMQUZ/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/RV3Z42LSB3WY6JJJDRQIUDMQUZ/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":"2026-05-26T18:09:41Z","links":{"resolver":"https://pith.science/pith/RV3Z42LSB3WY6JJJDRQIUDMQUZ","bundle":"https://pith.science/pith/RV3Z42LSB3WY6JJJDRQIUDMQUZ/bundle.json","state":"https://pith.science/pith/RV3Z42LSB3WY6JJJDRQIUDMQUZ/state.json","well_known_bundle":"https://pith.science/.well-known/pith/RV3Z42LSB3WY6JJJDRQIUDMQUZ/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:RV3Z42LSB3WY6JJJDRQIUDMQUZ","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":"01558ee8fbf34d98afcc98b0c16d5a01fd0d2c9e94f49641de50609b0c73fae2","cross_cats_sorted":["astro-ph.CO","hep-th"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2012-05-04T19:12:40Z","title_canon_sha256":"c51f97337c899640b237fca223fadbd86ca786e17d6cd775f391883eeb4f52b4"},"schema_version":"1.0","source":{"id":"1205.1056","kind":"arxiv","version":5}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1205.1056","created_at":"2026-05-18T03:39:52Z"},{"alias_kind":"arxiv_version","alias_value":"1205.1056v5","created_at":"2026-05-18T03:39:52Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1205.1056","created_at":"2026-05-18T03:39:52Z"},{"alias_kind":"pith_short_12","alias_value":"RV3Z42LSB3WY","created_at":"2026-05-18T12:27:20Z"},{"alias_kind":"pith_short_16","alias_value":"RV3Z42LSB3WY6JJJ","created_at":"2026-05-18T12:27:20Z"},{"alias_kind":"pith_short_8","alias_value":"RV3Z42LS","created_at":"2026-05-18T12:27:20Z"}],"graph_snapshots":[{"event_id":"sha256:ea63343ebe411f6212875cc45b40c2f58793b071e29947e39adc49a5924cd993","target":"graph","created_at":"2026-05-18T03:39:52Z","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":"In this work we construct a unified model of dark energy and dark matter. This is done with the following three elements: a gravitating scalar field, phi with a non-conventional kinetic term, as in the string theory tachyon; an arbitrary potential, V(phi); two measures -- a metric measure (sqrt{-g}) and a non-metric measure (Phi). The model has two interesting features: (i) For potentials which are unstable and would give rise to tachyonic scalar field, this model can stabilize the scalar field. (ii) The form of the dark energy and dark matter that results from this model is fairly insensitive","authors_text":"Douglas Singleton, Eduardo Guendelman, Nattapong Yongram","cross_cats":["astro-ph.CO","hep-th"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2012-05-04T19:12:40Z","title":"A two measure model of dark energy and dark matter"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1205.1056","kind":"arxiv","version":5},"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":"sha256:9969b0954482faca84d29e75469cf7cdd22cdc0857bafb589e36aa31969547b5","target":"record","created_at":"2026-05-18T03:39:52Z","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":"01558ee8fbf34d98afcc98b0c16d5a01fd0d2c9e94f49641de50609b0c73fae2","cross_cats_sorted":["astro-ph.CO","hep-th"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2012-05-04T19:12:40Z","title_canon_sha256":"c51f97337c899640b237fca223fadbd86ca786e17d6cd775f391883eeb4f52b4"},"schema_version":"1.0","source":{"id":"1205.1056","kind":"arxiv","version":5}},"canonical_sha256":"8d779e69720eed8f25291c608a0d90a657651219291dad58d726c6cf67231eb8","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"8d779e69720eed8f25291c608a0d90a657651219291dad58d726c6cf67231eb8","first_computed_at":"2026-05-18T03:39:52.958633Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:39:52.958633Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"5KHku303kp6NE0x+PAehPG6+1YqM+3YpbODbl25xVv+X3k5W3JFn97vV8+Me0/zUQXscmgn3vicCvwOpzQ9tCQ==","signature_status":"signed_v1","signed_at":"2026-05-18T03:39:52.959036Z","signed_message":"canonical_sha256_bytes"},"source_id":"1205.1056","source_kind":"arxiv","source_version":5}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:9969b0954482faca84d29e75469cf7cdd22cdc0857bafb589e36aa31969547b5","sha256:ea63343ebe411f6212875cc45b40c2f58793b071e29947e39adc49a5924cd993"],"state_sha256":"951c2f3592197ebfc2ff62a93a18250385ec6f2ab86ab60de7b64dac3fae0362"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"aA6y5R2QWGOncVJ5H3rY+GgQGJ4zTRHVbJ0Tb2v/Iy56jEINBQG5XZP/MYgapuZW6xFqGXtL9PoPEESo9dK/DA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-26T18:09:41.611899Z","bundle_sha256":"33d9344cc8144d91ddb1a0791bc3245340debe325f3de11fa2d04fb4033ef326"}}