{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2026:ABEEHKDX7UWCIN5EG3J2GCOWCO","short_pith_number":"pith:ABEEHKDX","canonical_record":{"source":{"id":"2607.05154","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.bio-ph","submitted_at":"2026-07-06T14:37:51Z","cross_cats_sorted":[],"title_canon_sha256":"cb649e213803ea5d33bbc6ab47581461e5d5ee13acb33df7a5f70acdb00116fd","abstract_canon_sha256":"f95b03bd39f706041df82decfe5be59c00809c000a316fe14504e2c5d1dc2ee5"},"schema_version":"1.0"},"canonical_sha256":"004843a877fd2c2437a436d3a309d61381a691ed452fd83733fe5cdbcd1898e4","source":{"kind":"arxiv","id":"2607.05154","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2607.05154","created_at":"2026-07-07T03:19:17Z"},{"alias_kind":"arxiv_version","alias_value":"2607.05154v1","created_at":"2026-07-07T03:19:17Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2607.05154","created_at":"2026-07-07T03:19:17Z"},{"alias_kind":"pith_short_12","alias_value":"ABEEHKDX7UWC","created_at":"2026-07-07T03:19:17Z"},{"alias_kind":"pith_short_16","alias_value":"ABEEHKDX7UWCIN5E","created_at":"2026-07-07T03:19:17Z"},{"alias_kind":"pith_short_8","alias_value":"ABEEHKDX","created_at":"2026-07-07T03:19:17Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2026:ABEEHKDX7UWCIN5EG3J2GCOWCO","target":"record","payload":{"canonical_record":{"source":{"id":"2607.05154","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.bio-ph","submitted_at":"2026-07-06T14:37:51Z","cross_cats_sorted":[],"title_canon_sha256":"cb649e213803ea5d33bbc6ab47581461e5d5ee13acb33df7a5f70acdb00116fd","abstract_canon_sha256":"f95b03bd39f706041df82decfe5be59c00809c000a316fe14504e2c5d1dc2ee5"},"schema_version":"1.0"},"canonical_sha256":"004843a877fd2c2437a436d3a309d61381a691ed452fd83733fe5cdbcd1898e4","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-07T03:19:17.936127Z","signature_b64":"VRGD1dnLTs048je6yQZwgqwJKDBhucqQ1F80FVdVU5PqHSlItRm0PXb/9SUSIg6SGZbM/XklKZRtssrfvZQAAQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"004843a877fd2c2437a436d3a309d61381a691ed452fd83733fe5cdbcd1898e4","last_reissued_at":"2026-07-07T03:19:17.935690Z","signature_status":"signed_v1","first_computed_at":"2026-07-07T03:19:17.935690Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2607.05154","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":"2026-07-07T03:19:17Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"UqQHk6YtXnilG9bYNqDe8YbEJCx35OKrLjcYSXMmeDAPBLm3VYeJE1BOpQyllU+HiCDgua2JjEzEUETZDtdXBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-22T00:24:12.632305Z"},"content_sha256":"979ecd9aae6b5bfff4b5f1030aa89a052ee63b93cc613b9cfc1bdb22cf2bf2bc","schema_version":"1.0","event_id":"sha256:979ecd9aae6b5bfff4b5f1030aa89a052ee63b93cc613b9cfc1bdb22cf2bf2bc"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2026:ABEEHKDX7UWCIN5EG3J2GCOWCO","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Biophysics of the Pyrenoid","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"physics.bio-ph","authors_text":"Charley Schaefer, Mark Leake","submitted_at":"2026-07-06T14:37:51Z","abstract_excerpt":"Phase-separated liquid droplets organize molecules in cells, but the underlying physical principles differ from abiotic mixing and quantitative rules in living systems remain poorly understood. The pyrenoid -- a liquid-like organelle that enhances photosynthetic carbon fixation in algae and hornworts -- provides an unusually tractable model system. Here, we review recent advances in our understanding of pyrenoids from the perspective of biophysics. We highlight how reaction-diffusion models connect compartment architecture to catalytic performance, how soft matter theories link molecular inter"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2607.05154","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2607.05154/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":"2026-07-07T03:19:17Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"zcHBHXsE7gD6IaDt+QyZImndY9NFaHwdX95oU9JHnILCJxnCoV0sVqAVQach8l8R6T+VuagPNoaHaVrWQdynBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-22T00:24:12.632685Z"},"content_sha256":"342da64a16c5fcb1de03e51fcb0ede92387f7cadccea82192fd660f07d7b42ec","schema_version":"1.0","event_id":"sha256:342da64a16c5fcb1de03e51fcb0ede92387f7cadccea82192fd660f07d7b42ec"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/ABEEHKDX7UWCIN5EG3J2GCOWCO/bundle.json","state_url":"https://pith.science/pith/ABEEHKDX7UWCIN5EG3J2GCOWCO/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/ABEEHKDX7UWCIN5EG3J2GCOWCO/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":"2026-07-22T00:24:12Z","links":{"resolver":"https://pith.science/pith/ABEEHKDX7UWCIN5EG3J2GCOWCO","bundle":"https://pith.science/pith/ABEEHKDX7UWCIN5EG3J2GCOWCO/bundle.json","state":"https://pith.science/pith/ABEEHKDX7UWCIN5EG3J2GCOWCO/state.json","well_known_bundle":"https://pith.science/.well-known/pith/ABEEHKDX7UWCIN5EG3J2GCOWCO/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2026:ABEEHKDX7UWCIN5EG3J2GCOWCO","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":"f95b03bd39f706041df82decfe5be59c00809c000a316fe14504e2c5d1dc2ee5","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.bio-ph","submitted_at":"2026-07-06T14:37:51Z","title_canon_sha256":"cb649e213803ea5d33bbc6ab47581461e5d5ee13acb33df7a5f70acdb00116fd"},"schema_version":"1.0","source":{"id":"2607.05154","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2607.05154","created_at":"2026-07-07T03:19:17Z"},{"alias_kind":"arxiv_version","alias_value":"2607.05154v1","created_at":"2026-07-07T03:19:17Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2607.05154","created_at":"2026-07-07T03:19:17Z"},{"alias_kind":"pith_short_12","alias_value":"ABEEHKDX7UWC","created_at":"2026-07-07T03:19:17Z"},{"alias_kind":"pith_short_16","alias_value":"ABEEHKDX7UWCIN5E","created_at":"2026-07-07T03:19:17Z"},{"alias_kind":"pith_short_8","alias_value":"ABEEHKDX","created_at":"2026-07-07T03:19:17Z"}],"graph_snapshots":[{"event_id":"sha256:342da64a16c5fcb1de03e51fcb0ede92387f7cadccea82192fd660f07d7b42ec","target":"graph","created_at":"2026-07-07T03:19:17Z","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/2607.05154/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Phase-separated liquid droplets organize molecules in cells, but the underlying physical principles differ from abiotic mixing and quantitative rules in living systems remain poorly understood. The pyrenoid -- a liquid-like organelle that enhances photosynthetic carbon fixation in algae and hornworts -- provides an unusually tractable model system. Here, we review recent advances in our understanding of pyrenoids from the perspective of biophysics. We highlight how reaction-diffusion models connect compartment architecture to catalytic performance, how soft matter theories link molecular inter","authors_text":"Charley Schaefer, Mark Leake","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.bio-ph","submitted_at":"2026-07-06T14:37:51Z","title":"Biophysics of the Pyrenoid"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2607.05154","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":"sha256:979ecd9aae6b5bfff4b5f1030aa89a052ee63b93cc613b9cfc1bdb22cf2bf2bc","target":"record","created_at":"2026-07-07T03:19:17Z","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":"f95b03bd39f706041df82decfe5be59c00809c000a316fe14504e2c5d1dc2ee5","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.bio-ph","submitted_at":"2026-07-06T14:37:51Z","title_canon_sha256":"cb649e213803ea5d33bbc6ab47581461e5d5ee13acb33df7a5f70acdb00116fd"},"schema_version":"1.0","source":{"id":"2607.05154","kind":"arxiv","version":1}},"canonical_sha256":"004843a877fd2c2437a436d3a309d61381a691ed452fd83733fe5cdbcd1898e4","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"004843a877fd2c2437a436d3a309d61381a691ed452fd83733fe5cdbcd1898e4","first_computed_at":"2026-07-07T03:19:17.935690Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-07T03:19:17.935690Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"VRGD1dnLTs048je6yQZwgqwJKDBhucqQ1F80FVdVU5PqHSlItRm0PXb/9SUSIg6SGZbM/XklKZRtssrfvZQAAQ==","signature_status":"signed_v1","signed_at":"2026-07-07T03:19:17.936127Z","signed_message":"canonical_sha256_bytes"},"source_id":"2607.05154","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:979ecd9aae6b5bfff4b5f1030aa89a052ee63b93cc613b9cfc1bdb22cf2bf2bc","sha256:342da64a16c5fcb1de03e51fcb0ede92387f7cadccea82192fd660f07d7b42ec"],"state_sha256":"682a840256464ef7047218f756c83de5787ed671ed418351f5f918292c516cba"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"+IpKEfKoRPTypxSQ29pT7Uau4hvAc3MDSHbHHvIUMenaQ4D4DI7DuC6SDI0jkjgTVF+4Sq81PhLbf2ybA0tACg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-22T00:24:12.634767Z","bundle_sha256":"76ff6b98180d4ce65c40766a94e2e5cf29dcfca0dbb6e5de4fcb71c935b6b702"}}