{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2016:VYA5GLZMSXJ2OQOF3EWVUKZSZC","short_pith_number":"pith:VYA5GLZM","canonical_record":{"source":{"id":"1611.08224","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"q-bio.CB","submitted_at":"2016-11-24T15:39:07Z","cross_cats_sorted":["cond-mat.soft","physics.bio-ph"],"title_canon_sha256":"a382cdfde2bc76dff18ee961e478281b71d91766dd65f1768510c33b707e4c1f","abstract_canon_sha256":"309cfa60caaebfa8eea436e2fde14803c7261d3b6aa02b3e1808fd0e2f893616"},"schema_version":"1.0"},"canonical_sha256":"ae01d32f2c95d3a741c5d92d5a2b32c88ffc27db2fea7e8ab4515716c98c2b28","source":{"kind":"arxiv","id":"1611.08224","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1611.08224","created_at":"2026-05-18T00:56:39Z"},{"alias_kind":"arxiv_version","alias_value":"1611.08224v1","created_at":"2026-05-18T00:56:39Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1611.08224","created_at":"2026-05-18T00:56:39Z"},{"alias_kind":"pith_short_12","alias_value":"VYA5GLZMSXJ2","created_at":"2026-05-18T12:30:48Z"},{"alias_kind":"pith_short_16","alias_value":"VYA5GLZMSXJ2OQOF","created_at":"2026-05-18T12:30:48Z"},{"alias_kind":"pith_short_8","alias_value":"VYA5GLZM","created_at":"2026-05-18T12:30:48Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2016:VYA5GLZMSXJ2OQOF3EWVUKZSZC","target":"record","payload":{"canonical_record":{"source":{"id":"1611.08224","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"q-bio.CB","submitted_at":"2016-11-24T15:39:07Z","cross_cats_sorted":["cond-mat.soft","physics.bio-ph"],"title_canon_sha256":"a382cdfde2bc76dff18ee961e478281b71d91766dd65f1768510c33b707e4c1f","abstract_canon_sha256":"309cfa60caaebfa8eea436e2fde14803c7261d3b6aa02b3e1808fd0e2f893616"},"schema_version":"1.0"},"canonical_sha256":"ae01d32f2c95d3a741c5d92d5a2b32c88ffc27db2fea7e8ab4515716c98c2b28","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:56:39.855329Z","signature_b64":"ACBkkzHVVJmxbN063RI9Zsb/THTheSsWdYhWD+kxuyk5prY6O5fZ80JBUCQhEHSoKdvDaCmWcmMw2vSMY7NCCQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"ae01d32f2c95d3a741c5d92d5a2b32c88ffc27db2fea7e8ab4515716c98c2b28","last_reissued_at":"2026-05-18T00:56:39.854574Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:56:39.854574Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1611.08224","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":"2026-05-18T00:56:39Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"m7hIIHR/5aYpl8m+hwjtwo5lkcsjo6t9MfSfLahWePTdX5Lvzkp48LN/hR1iRRkMDutxtyZASQkLT8ONxxLQDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-20T15:11:13.169186Z"},"content_sha256":"c1905297429e401ba559ae09fb9dc2038c00f12d2cb12745a162e0f75351a855","schema_version":"1.0","event_id":"sha256:c1905297429e401ba559ae09fb9dc2038c00f12d2cb12745a162e0f75351a855"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2016:VYA5GLZMSXJ2OQOF3EWVUKZSZC","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Phototaxis beyond turning: persistent accumulation and response acclimation of the microalga Chlamydomonas reinhardtii","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.soft","physics.bio-ph"],"primary_cat":"q-bio.CB","authors_text":"Ana Barreira, Idan Tuval, Jorge Arrieta, Marco Polin, Maurizio Chioccioli","submitted_at":"2016-11-24T15:39:07Z","abstract_excerpt":"Phototaxis is an important reaction to light displayed by a wide range of motile microorganisms. Flagellated eukaryotic microalgae in particular, like the model organism Chlamydomonas reinhardtii, steer either towards or away from light by a rapid and precisely timed modulation of their flagellar activity. Cell steering, however, is only the beginning of a much longer process which ultimately allows cells to determine their light exposure history. This process is not well understood. Here we present a first quantitative study of the long timescale phototactic motility of Chlamydomonas at both "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1611.08224","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":"2026-05-18T00:56:39Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ahAiIP5k2OotHBGRmpyZhuFOpMJ21MMEP0/IScZu+aFjHNLBtONiATcjz/M3051qpO+WAD4jUzEpWZqT0gHqBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-20T15:11:13.169756Z"},"content_sha256":"acb6c1af7630b5f190f631c7b0a843a22ae5c4eceae98bcbb0c2f4e5a0e18738","schema_version":"1.0","event_id":"sha256:acb6c1af7630b5f190f631c7b0a843a22ae5c4eceae98bcbb0c2f4e5a0e18738"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/VYA5GLZMSXJ2OQOF3EWVUKZSZC/bundle.json","state_url":"https://pith.science/pith/VYA5GLZMSXJ2OQOF3EWVUKZSZC/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/VYA5GLZMSXJ2OQOF3EWVUKZSZC/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":"2026-05-20T15:11:13Z","links":{"resolver":"https://pith.science/pith/VYA5GLZMSXJ2OQOF3EWVUKZSZC","bundle":"https://pith.science/pith/VYA5GLZMSXJ2OQOF3EWVUKZSZC/bundle.json","state":"https://pith.science/pith/VYA5GLZMSXJ2OQOF3EWVUKZSZC/state.json","well_known_bundle":"https://pith.science/.well-known/pith/VYA5GLZMSXJ2OQOF3EWVUKZSZC/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:VYA5GLZMSXJ2OQOF3EWVUKZSZC","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":"309cfa60caaebfa8eea436e2fde14803c7261d3b6aa02b3e1808fd0e2f893616","cross_cats_sorted":["cond-mat.soft","physics.bio-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"q-bio.CB","submitted_at":"2016-11-24T15:39:07Z","title_canon_sha256":"a382cdfde2bc76dff18ee961e478281b71d91766dd65f1768510c33b707e4c1f"},"schema_version":"1.0","source":{"id":"1611.08224","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1611.08224","created_at":"2026-05-18T00:56:39Z"},{"alias_kind":"arxiv_version","alias_value":"1611.08224v1","created_at":"2026-05-18T00:56:39Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1611.08224","created_at":"2026-05-18T00:56:39Z"},{"alias_kind":"pith_short_12","alias_value":"VYA5GLZMSXJ2","created_at":"2026-05-18T12:30:48Z"},{"alias_kind":"pith_short_16","alias_value":"VYA5GLZMSXJ2OQOF","created_at":"2026-05-18T12:30:48Z"},{"alias_kind":"pith_short_8","alias_value":"VYA5GLZM","created_at":"2026-05-18T12:30:48Z"}],"graph_snapshots":[{"event_id":"sha256:acb6c1af7630b5f190f631c7b0a843a22ae5c4eceae98bcbb0c2f4e5a0e18738","target":"graph","created_at":"2026-05-18T00:56:39Z","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":"Phototaxis is an important reaction to light displayed by a wide range of motile microorganisms. Flagellated eukaryotic microalgae in particular, like the model organism Chlamydomonas reinhardtii, steer either towards or away from light by a rapid and precisely timed modulation of their flagellar activity. Cell steering, however, is only the beginning of a much longer process which ultimately allows cells to determine their light exposure history. This process is not well understood. Here we present a first quantitative study of the long timescale phototactic motility of Chlamydomonas at both ","authors_text":"Ana Barreira, Idan Tuval, Jorge Arrieta, Marco Polin, Maurizio Chioccioli","cross_cats":["cond-mat.soft","physics.bio-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"q-bio.CB","submitted_at":"2016-11-24T15:39:07Z","title":"Phototaxis beyond turning: persistent accumulation and response acclimation of the microalga Chlamydomonas reinhardtii"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1611.08224","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:c1905297429e401ba559ae09fb9dc2038c00f12d2cb12745a162e0f75351a855","target":"record","created_at":"2026-05-18T00:56:39Z","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":"309cfa60caaebfa8eea436e2fde14803c7261d3b6aa02b3e1808fd0e2f893616","cross_cats_sorted":["cond-mat.soft","physics.bio-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"q-bio.CB","submitted_at":"2016-11-24T15:39:07Z","title_canon_sha256":"a382cdfde2bc76dff18ee961e478281b71d91766dd65f1768510c33b707e4c1f"},"schema_version":"1.0","source":{"id":"1611.08224","kind":"arxiv","version":1}},"canonical_sha256":"ae01d32f2c95d3a741c5d92d5a2b32c88ffc27db2fea7e8ab4515716c98c2b28","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"ae01d32f2c95d3a741c5d92d5a2b32c88ffc27db2fea7e8ab4515716c98c2b28","first_computed_at":"2026-05-18T00:56:39.854574Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:56:39.854574Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"ACBkkzHVVJmxbN063RI9Zsb/THTheSsWdYhWD+kxuyk5prY6O5fZ80JBUCQhEHSoKdvDaCmWcmMw2vSMY7NCCQ==","signature_status":"signed_v1","signed_at":"2026-05-18T00:56:39.855329Z","signed_message":"canonical_sha256_bytes"},"source_id":"1611.08224","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:c1905297429e401ba559ae09fb9dc2038c00f12d2cb12745a162e0f75351a855","sha256:acb6c1af7630b5f190f631c7b0a843a22ae5c4eceae98bcbb0c2f4e5a0e18738"],"state_sha256":"d7b623d96d026e7e35ed75883b0cd079b34b3000a97d7840f868c9a25bba4dd0"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"PuZ6RRElm/QGt1OVHAZHZdMcwDQY6A1hjQVCPTnN6jN8vUJy8lTXthWC3z3WEFs7gC0JEaGpPa/8XgQtqp5SDQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-20T15:11:13.172634Z","bundle_sha256":"5786b912e9c29d37d7552961b66f7b5d1bd584174650c4a1491ff6bd81f9ed4d"}}