{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2013:CHWV46B75VHRAHIPTFFCD7UZOG","short_pith_number":"pith:CHWV46B7","canonical_record":{"source":{"id":"1310.5167","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2013-10-18T21:19:53Z","cross_cats_sorted":["astro-ph.CO"],"title_canon_sha256":"e74c60d0832e1d4398c06944115de6e4040187272217b5e56385ecaf12866568","abstract_canon_sha256":"b497eeb6e49e57f548cf2262d0a14e4d6ac84ab621c16fd6b736179af9597d3a"},"schema_version":"1.0"},"canonical_sha256":"11ed5e783fed4f101d0f994a21fe9971a8bfeeedc817ae15c8630dc6e5f70b27","source":{"kind":"arxiv","id":"1310.5167","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1310.5167","created_at":"2026-05-18T02:31:38Z"},{"alias_kind":"arxiv_version","alias_value":"1310.5167v1","created_at":"2026-05-18T02:31:38Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1310.5167","created_at":"2026-05-18T02:31:38Z"},{"alias_kind":"pith_short_12","alias_value":"CHWV46B75VHR","created_at":"2026-05-18T12:27:40Z"},{"alias_kind":"pith_short_16","alias_value":"CHWV46B75VHRAHIP","created_at":"2026-05-18T12:27:40Z"},{"alias_kind":"pith_short_8","alias_value":"CHWV46B7","created_at":"2026-05-18T12:27:40Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2013:CHWV46B75VHRAHIPTFFCD7UZOG","target":"record","payload":{"canonical_record":{"source":{"id":"1310.5167","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2013-10-18T21:19:53Z","cross_cats_sorted":["astro-ph.CO"],"title_canon_sha256":"e74c60d0832e1d4398c06944115de6e4040187272217b5e56385ecaf12866568","abstract_canon_sha256":"b497eeb6e49e57f548cf2262d0a14e4d6ac84ab621c16fd6b736179af9597d3a"},"schema_version":"1.0"},"canonical_sha256":"11ed5e783fed4f101d0f994a21fe9971a8bfeeedc817ae15c8630dc6e5f70b27","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:31:38.367962Z","signature_b64":"P8fMfoLS4vyCODcRxs9xQfYJ0JFCKoFpJ9OcgrdSQgAvxue2va7QWn6SxsEEqsKKFPtKcOVzvbFo/oB5n6YiCA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"11ed5e783fed4f101d0f994a21fe9971a8bfeeedc817ae15c8630dc6e5f70b27","last_reissued_at":"2026-05-18T02:31:38.367336Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:31:38.367336Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1310.5167","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":"2026-05-18T02:31:38Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"gn5S5tGEPXT0nLaYecnt208V4fzIpz1w9Zhq5kxpXxInwvEojft+EGmx8atf9O2Dw87xlnY6aBl+CO1lSTkSCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-21T21:49:13.174612Z"},"content_sha256":"78f0ae17f044a766f82654233b12c1fe8c8418462097e9aff3e00428ee95f0ba","schema_version":"1.0","event_id":"sha256:78f0ae17f044a766f82654233b12c1fe8c8418462097e9aff3e00428ee95f0ba"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2013:CHWV46B75VHRAHIPTFFCD7UZOG","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"A Gravitational Origin of the Arrows of Time","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.CO"],"primary_cat":"gr-qc","authors_text":"Flavio Mercati, Julian Barbour, Tim Koslowski","submitted_at":"2013-10-18T21:19:53Z","abstract_excerpt":"The only widely accepted explanation for the various arrows of time that everywhere and at all epochs point in the same direction is the `past hypothesis': the Universe had a very special low-entropy initial state. We present the first evidence for an alternative conjecture: the arrows exist in all solutions of the gravitational law that governs the Universe and arise because the space of its true degrees of freedom (shape space) is asymmetric. We prove our conjecture for arrows of complexity and information in the Newtonian N-body problem. Except for a set of measure zero, all of its solution"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1310.5167","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":"2026-05-18T02:31:38Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"mWA4zHmt1jpdTqwC5gI+YdbTw0LuLMynP1wSN4tfO7S49guPOJYWc5lCePcPYsdZi9bJQrUMyXOXnNLotMU8Cg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-21T21:49:13.174968Z"},"content_sha256":"215cedca6e52d55d754cdc096e9e23beaf78ab9126f090725ea4596fe8048e83","schema_version":"1.0","event_id":"sha256:215cedca6e52d55d754cdc096e9e23beaf78ab9126f090725ea4596fe8048e83"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/CHWV46B75VHRAHIPTFFCD7UZOG/bundle.json","state_url":"https://pith.science/pith/CHWV46B75VHRAHIPTFFCD7UZOG/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/CHWV46B75VHRAHIPTFFCD7UZOG/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":"2026-05-21T21:49:13Z","links":{"resolver":"https://pith.science/pith/CHWV46B75VHRAHIPTFFCD7UZOG","bundle":"https://pith.science/pith/CHWV46B75VHRAHIPTFFCD7UZOG/bundle.json","state":"https://pith.science/pith/CHWV46B75VHRAHIPTFFCD7UZOG/state.json","well_known_bundle":"https://pith.science/.well-known/pith/CHWV46B75VHRAHIPTFFCD7UZOG/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:CHWV46B75VHRAHIPTFFCD7UZOG","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":"b497eeb6e49e57f548cf2262d0a14e4d6ac84ab621c16fd6b736179af9597d3a","cross_cats_sorted":["astro-ph.CO"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2013-10-18T21:19:53Z","title_canon_sha256":"e74c60d0832e1d4398c06944115de6e4040187272217b5e56385ecaf12866568"},"schema_version":"1.0","source":{"id":"1310.5167","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1310.5167","created_at":"2026-05-18T02:31:38Z"},{"alias_kind":"arxiv_version","alias_value":"1310.5167v1","created_at":"2026-05-18T02:31:38Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1310.5167","created_at":"2026-05-18T02:31:38Z"},{"alias_kind":"pith_short_12","alias_value":"CHWV46B75VHR","created_at":"2026-05-18T12:27:40Z"},{"alias_kind":"pith_short_16","alias_value":"CHWV46B75VHRAHIP","created_at":"2026-05-18T12:27:40Z"},{"alias_kind":"pith_short_8","alias_value":"CHWV46B7","created_at":"2026-05-18T12:27:40Z"}],"graph_snapshots":[{"event_id":"sha256:215cedca6e52d55d754cdc096e9e23beaf78ab9126f090725ea4596fe8048e83","target":"graph","created_at":"2026-05-18T02:31:38Z","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":"The only widely accepted explanation for the various arrows of time that everywhere and at all epochs point in the same direction is the `past hypothesis': the Universe had a very special low-entropy initial state. We present the first evidence for an alternative conjecture: the arrows exist in all solutions of the gravitational law that governs the Universe and arise because the space of its true degrees of freedom (shape space) is asymmetric. We prove our conjecture for arrows of complexity and information in the Newtonian N-body problem. Except for a set of measure zero, all of its solution","authors_text":"Flavio Mercati, Julian Barbour, Tim Koslowski","cross_cats":["astro-ph.CO"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2013-10-18T21:19:53Z","title":"A Gravitational Origin of the Arrows of Time"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1310.5167","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":"sha256:78f0ae17f044a766f82654233b12c1fe8c8418462097e9aff3e00428ee95f0ba","target":"record","created_at":"2026-05-18T02:31:38Z","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":"b497eeb6e49e57f548cf2262d0a14e4d6ac84ab621c16fd6b736179af9597d3a","cross_cats_sorted":["astro-ph.CO"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2013-10-18T21:19:53Z","title_canon_sha256":"e74c60d0832e1d4398c06944115de6e4040187272217b5e56385ecaf12866568"},"schema_version":"1.0","source":{"id":"1310.5167","kind":"arxiv","version":1}},"canonical_sha256":"11ed5e783fed4f101d0f994a21fe9971a8bfeeedc817ae15c8630dc6e5f70b27","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"11ed5e783fed4f101d0f994a21fe9971a8bfeeedc817ae15c8630dc6e5f70b27","first_computed_at":"2026-05-18T02:31:38.367336Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:31:38.367336Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"P8fMfoLS4vyCODcRxs9xQfYJ0JFCKoFpJ9OcgrdSQgAvxue2va7QWn6SxsEEqsKKFPtKcOVzvbFo/oB5n6YiCA==","signature_status":"signed_v1","signed_at":"2026-05-18T02:31:38.367962Z","signed_message":"canonical_sha256_bytes"},"source_id":"1310.5167","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:78f0ae17f044a766f82654233b12c1fe8c8418462097e9aff3e00428ee95f0ba","sha256:215cedca6e52d55d754cdc096e9e23beaf78ab9126f090725ea4596fe8048e83"],"state_sha256":"95c25af54a8bcfb85e2cfb18c3934d718ecc7d5f318e864a94368cd590915d1d"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ZFJHQGYxscbhR5NVjeySFxJCpVZRAuge0/groPNHm3YqYJAm/OAwYDBQj8K7aKCe7cBb4SFpSPqA1K0oCy8CCg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-21T21:49:13.177177Z","bundle_sha256":"afc34ac88abdf69bb515aaf566abf8fb84a7c83d5e508c6894c53fcc899805ef"}}