{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2016:2LH2G75LTQGXZOLIDWDWAL64R4","short_pith_number":"pith:2LH2G75L","canonical_record":{"source":{"id":"1603.02298","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nlin.CG","submitted_at":"2016-03-03T05:33:18Z","cross_cats_sorted":["cs.CC"],"title_canon_sha256":"ef2fba4051c49c99797486e91a17924b9f0cb3b286b7f74d64d848108a22287e","abstract_canon_sha256":"cf269bfe6c259e09d195616e8886aa5edf53a5aef434af80932b917654917682"},"schema_version":"1.0"},"canonical_sha256":"d2cfa37fab9c0d7cb9681d87602fdc8f38ce3ae2dabccb3c2ca5f97834a0a3e1","source":{"kind":"arxiv","id":"1603.02298","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1603.02298","created_at":"2026-05-18T01:19:23Z"},{"alias_kind":"arxiv_version","alias_value":"1603.02298v1","created_at":"2026-05-18T01:19:23Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1603.02298","created_at":"2026-05-18T01:19:23Z"},{"alias_kind":"pith_short_12","alias_value":"2LH2G75LTQGX","created_at":"2026-05-18T12:29:55Z"},{"alias_kind":"pith_short_16","alias_value":"2LH2G75LTQGXZOLI","created_at":"2026-05-18T12:29:55Z"},{"alias_kind":"pith_short_8","alias_value":"2LH2G75L","created_at":"2026-05-18T12:29:55Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2016:2LH2G75LTQGXZOLIDWDWAL64R4","target":"record","payload":{"canonical_record":{"source":{"id":"1603.02298","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nlin.CG","submitted_at":"2016-03-03T05:33:18Z","cross_cats_sorted":["cs.CC"],"title_canon_sha256":"ef2fba4051c49c99797486e91a17924b9f0cb3b286b7f74d64d848108a22287e","abstract_canon_sha256":"cf269bfe6c259e09d195616e8886aa5edf53a5aef434af80932b917654917682"},"schema_version":"1.0"},"canonical_sha256":"d2cfa37fab9c0d7cb9681d87602fdc8f38ce3ae2dabccb3c2ca5f97834a0a3e1","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:19:23.801233Z","signature_b64":"IIXKi6WOnySut6jt5NUumDXLGHYRTvpfF4t237l1C0WPzMK5SyznF+IAJ8DYYWHFsp/b/vjVpnNkXnmLoV9iDQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"d2cfa37fab9c0d7cb9681d87602fdc8f38ce3ae2dabccb3c2ca5f97834a0a3e1","last_reissued_at":"2026-05-18T01:19:23.800406Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:19:23.800406Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1603.02298","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":"2026-05-18T01:19:23Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"7dUATq1OjukgigTFxr8PuaTEZYA4LVwI27Hgfh23AGvgpbWjhwiHRH/fF1HbkNgMqz8+YmpQVoBnllDVW4EqCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-07T15:30:08.034861Z"},"content_sha256":"513cece1f2b86e7aac3bf5dd97d906738f2c73016cff70584d197f6791bcd19c","schema_version":"1.0","event_id":"sha256:513cece1f2b86e7aac3bf5dd97d906738f2c73016cff70584d197f6791bcd19c"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2016:2LH2G75LTQGXZOLIDWDWAL64R4","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Free fall and cellular automata","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cs.CC"],"primary_cat":"nlin.CG","authors_text":"Gilles Dowek (Inria, LIF), LSV), Pablo Arrighi (University Aix-Marseille","submitted_at":"2016-03-03T05:33:18Z","abstract_excerpt":"Three reasonable hypotheses lead to the thesis that physical phenomena can be described and simulated with cellular automata. In this work, we attempt to describe the motion of a particle upon which a constant force is applied, with a cellular automaton, in Newtonian physics, in Special Relativity, and in General Relativity. The results are very different for these three theories."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1603.02298","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":"2026-05-18T01:19:23Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"oy0DjzzSjcxQR3FRqfXnVctSxtpvArgYdBLTIhFkWt14l6ORY0ohMVRCtdCGWGjKA8431/czwfpE3bGtpQ07BQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-07T15:30:08.035679Z"},"content_sha256":"c3b69700026d4addc2882437380244c2699a2bf2aceca004275ee5fb5fae9cbe","schema_version":"1.0","event_id":"sha256:c3b69700026d4addc2882437380244c2699a2bf2aceca004275ee5fb5fae9cbe"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/2LH2G75LTQGXZOLIDWDWAL64R4/bundle.json","state_url":"https://pith.science/pith/2LH2G75LTQGXZOLIDWDWAL64R4/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/2LH2G75LTQGXZOLIDWDWAL64R4/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":"2026-06-07T15:30:08Z","links":{"resolver":"https://pith.science/pith/2LH2G75LTQGXZOLIDWDWAL64R4","bundle":"https://pith.science/pith/2LH2G75LTQGXZOLIDWDWAL64R4/bundle.json","state":"https://pith.science/pith/2LH2G75LTQGXZOLIDWDWAL64R4/state.json","well_known_bundle":"https://pith.science/.well-known/pith/2LH2G75LTQGXZOLIDWDWAL64R4/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:2LH2G75LTQGXZOLIDWDWAL64R4","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":"cf269bfe6c259e09d195616e8886aa5edf53a5aef434af80932b917654917682","cross_cats_sorted":["cs.CC"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nlin.CG","submitted_at":"2016-03-03T05:33:18Z","title_canon_sha256":"ef2fba4051c49c99797486e91a17924b9f0cb3b286b7f74d64d848108a22287e"},"schema_version":"1.0","source":{"id":"1603.02298","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1603.02298","created_at":"2026-05-18T01:19:23Z"},{"alias_kind":"arxiv_version","alias_value":"1603.02298v1","created_at":"2026-05-18T01:19:23Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1603.02298","created_at":"2026-05-18T01:19:23Z"},{"alias_kind":"pith_short_12","alias_value":"2LH2G75LTQGX","created_at":"2026-05-18T12:29:55Z"},{"alias_kind":"pith_short_16","alias_value":"2LH2G75LTQGXZOLI","created_at":"2026-05-18T12:29:55Z"},{"alias_kind":"pith_short_8","alias_value":"2LH2G75L","created_at":"2026-05-18T12:29:55Z"}],"graph_snapshots":[{"event_id":"sha256:c3b69700026d4addc2882437380244c2699a2bf2aceca004275ee5fb5fae9cbe","target":"graph","created_at":"2026-05-18T01:19:23Z","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":"Three reasonable hypotheses lead to the thesis that physical phenomena can be described and simulated with cellular automata. In this work, we attempt to describe the motion of a particle upon which a constant force is applied, with a cellular automaton, in Newtonian physics, in Special Relativity, and in General Relativity. The results are very different for these three theories.","authors_text":"Gilles Dowek (Inria, LIF), LSV), Pablo Arrighi (University Aix-Marseille","cross_cats":["cs.CC"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nlin.CG","submitted_at":"2016-03-03T05:33:18Z","title":"Free fall and cellular automata"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1603.02298","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":"sha256:513cece1f2b86e7aac3bf5dd97d906738f2c73016cff70584d197f6791bcd19c","target":"record","created_at":"2026-05-18T01:19:23Z","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":"cf269bfe6c259e09d195616e8886aa5edf53a5aef434af80932b917654917682","cross_cats_sorted":["cs.CC"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nlin.CG","submitted_at":"2016-03-03T05:33:18Z","title_canon_sha256":"ef2fba4051c49c99797486e91a17924b9f0cb3b286b7f74d64d848108a22287e"},"schema_version":"1.0","source":{"id":"1603.02298","kind":"arxiv","version":1}},"canonical_sha256":"d2cfa37fab9c0d7cb9681d87602fdc8f38ce3ae2dabccb3c2ca5f97834a0a3e1","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"d2cfa37fab9c0d7cb9681d87602fdc8f38ce3ae2dabccb3c2ca5f97834a0a3e1","first_computed_at":"2026-05-18T01:19:23.800406Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:19:23.800406Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"IIXKi6WOnySut6jt5NUumDXLGHYRTvpfF4t237l1C0WPzMK5SyznF+IAJ8DYYWHFsp/b/vjVpnNkXnmLoV9iDQ==","signature_status":"signed_v1","signed_at":"2026-05-18T01:19:23.801233Z","signed_message":"canonical_sha256_bytes"},"source_id":"1603.02298","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:513cece1f2b86e7aac3bf5dd97d906738f2c73016cff70584d197f6791bcd19c","sha256:c3b69700026d4addc2882437380244c2699a2bf2aceca004275ee5fb5fae9cbe"],"state_sha256":"79980747c4c22876f7dbfeb70f623de94594aa9596646a6b896912a842d1571b"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"QLeI7tz0jhu50tYHjsNFZOYio6wZcsG5t29fdPTejGR1xr1i2Ql7YlbGjXt99v6UBmCODmmMyBqhGenutlDRBg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-07T15:30:08.039751Z","bundle_sha256":"5bf2d3a8dea3dd5001f97c709b52931169e38ff27e33d7321c6373b6c4bf0ac3"}}