{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2010:KFBSKY7ZWL2WDQLWBNHD5O7ZRU","short_pith_number":"pith:KFBSKY7Z","canonical_record":{"source":{"id":"1009.5667","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"q-bio.MN","submitted_at":"2010-09-28T19:51:13Z","cross_cats_sorted":[],"title_canon_sha256":"7bc0e7c14f60d0e0c8b8e616f45aa2fb4de61efe89dbd6d43dd3ab02718b9869","abstract_canon_sha256":"d55ccae325c9715af5b154e57847de6f56de31a3301c99428f179637bfc34df6"},"schema_version":"1.0"},"canonical_sha256":"51432563f9b2f561c1760b4e3ebbf98d23a882c944ff21aee97f063c54392ed0","source":{"kind":"arxiv","id":"1009.5667","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1009.5667","created_at":"2026-05-18T04:28:47Z"},{"alias_kind":"arxiv_version","alias_value":"1009.5667v1","created_at":"2026-05-18T04:28:47Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1009.5667","created_at":"2026-05-18T04:28:47Z"},{"alias_kind":"pith_short_12","alias_value":"KFBSKY7ZWL2W","created_at":"2026-05-18T12:26:09Z"},{"alias_kind":"pith_short_16","alias_value":"KFBSKY7ZWL2WDQLW","created_at":"2026-05-18T12:26:09Z"},{"alias_kind":"pith_short_8","alias_value":"KFBSKY7Z","created_at":"2026-05-18T12:26:09Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2010:KFBSKY7ZWL2WDQLWBNHD5O7ZRU","target":"record","payload":{"canonical_record":{"source":{"id":"1009.5667","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"q-bio.MN","submitted_at":"2010-09-28T19:51:13Z","cross_cats_sorted":[],"title_canon_sha256":"7bc0e7c14f60d0e0c8b8e616f45aa2fb4de61efe89dbd6d43dd3ab02718b9869","abstract_canon_sha256":"d55ccae325c9715af5b154e57847de6f56de31a3301c99428f179637bfc34df6"},"schema_version":"1.0"},"canonical_sha256":"51432563f9b2f561c1760b4e3ebbf98d23a882c944ff21aee97f063c54392ed0","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T04:28:47.911833Z","signature_b64":"DITiBHkIzYLPRTYvHlPBSE1viDrlqXM23TVCj01B3Is3mva6y2SFUsh/Ut9N9ZBy38y5UVSLmpngBa/Z2Pa0CA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"51432563f9b2f561c1760b4e3ebbf98d23a882c944ff21aee97f063c54392ed0","last_reissued_at":"2026-05-18T04:28:47.911337Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T04:28:47.911337Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1009.5667","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":"2026-05-18T04:28:47Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"CfRJgkrmHwY99/k/N8jjhE/5oh/USO5bPaDon9hxl8gQx4PLM/3RN9mkV5nZgPvaF1h+5A7etZky1g7NgIxiBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-26T16:30:46.693197Z"},"content_sha256":"1fd4053eeb747b84c5434e1fe23a4b9fa0a05bd0de04a54ae1898edd9d9aed4d","schema_version":"1.0","event_id":"sha256:1fd4053eeb747b84c5434e1fe23a4b9fa0a05bd0de04a54ae1898edd9d9aed4d"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2010:KFBSKY7ZWL2WDQLWBNHD5O7ZRU","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Fan-out in Gene Regulatory Networks","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"q-bio.MN","authors_text":"Herbert M. Sauro, Kyung Hyuk Kim","submitted_at":"2010-09-28T19:51:13Z","abstract_excerpt":"In synthetic biology, gene regulatory circuits are often constructed by combining smaller circuit components. Connections between components are achieved by transcription factors acting on promoters. If the individual components behave as true modules and certain module interface conditions are satisfied, the function of the composite circuits can in principle be predicted. In this paper, we investigate one of the interface conditions: fan-out. We quantify the fan-out, a concept widely used in electric engineering, to indicate the maximum number of the downstream inputs that an upstream output"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1009.5667","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":"2026-05-18T04:28:47Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"hhb7SurNAqvsPm2I7J3gLC07geeshkI0xfBkbA/ZgL3zxwnsfbnTAT1RKfFP52GaV127Ob6YHjfbFqHIX+CJCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-26T16:30:46.693769Z"},"content_sha256":"7fc2a67c82ebf45b16d17676c83ad1e20c1f3bfb70fe83c7b7a4e2349f1e4057","schema_version":"1.0","event_id":"sha256:7fc2a67c82ebf45b16d17676c83ad1e20c1f3bfb70fe83c7b7a4e2349f1e4057"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/KFBSKY7ZWL2WDQLWBNHD5O7ZRU/bundle.json","state_url":"https://pith.science/pith/KFBSKY7ZWL2WDQLWBNHD5O7ZRU/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/KFBSKY7ZWL2WDQLWBNHD5O7ZRU/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":"2026-06-26T16:30:46Z","links":{"resolver":"https://pith.science/pith/KFBSKY7ZWL2WDQLWBNHD5O7ZRU","bundle":"https://pith.science/pith/KFBSKY7ZWL2WDQLWBNHD5O7ZRU/bundle.json","state":"https://pith.science/pith/KFBSKY7ZWL2WDQLWBNHD5O7ZRU/state.json","well_known_bundle":"https://pith.science/.well-known/pith/KFBSKY7ZWL2WDQLWBNHD5O7ZRU/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2010:KFBSKY7ZWL2WDQLWBNHD5O7ZRU","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":"d55ccae325c9715af5b154e57847de6f56de31a3301c99428f179637bfc34df6","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"q-bio.MN","submitted_at":"2010-09-28T19:51:13Z","title_canon_sha256":"7bc0e7c14f60d0e0c8b8e616f45aa2fb4de61efe89dbd6d43dd3ab02718b9869"},"schema_version":"1.0","source":{"id":"1009.5667","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1009.5667","created_at":"2026-05-18T04:28:47Z"},{"alias_kind":"arxiv_version","alias_value":"1009.5667v1","created_at":"2026-05-18T04:28:47Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1009.5667","created_at":"2026-05-18T04:28:47Z"},{"alias_kind":"pith_short_12","alias_value":"KFBSKY7ZWL2W","created_at":"2026-05-18T12:26:09Z"},{"alias_kind":"pith_short_16","alias_value":"KFBSKY7ZWL2WDQLW","created_at":"2026-05-18T12:26:09Z"},{"alias_kind":"pith_short_8","alias_value":"KFBSKY7Z","created_at":"2026-05-18T12:26:09Z"}],"graph_snapshots":[{"event_id":"sha256:7fc2a67c82ebf45b16d17676c83ad1e20c1f3bfb70fe83c7b7a4e2349f1e4057","target":"graph","created_at":"2026-05-18T04:28:47Z","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 synthetic biology, gene regulatory circuits are often constructed by combining smaller circuit components. Connections between components are achieved by transcription factors acting on promoters. If the individual components behave as true modules and certain module interface conditions are satisfied, the function of the composite circuits can in principle be predicted. In this paper, we investigate one of the interface conditions: fan-out. We quantify the fan-out, a concept widely used in electric engineering, to indicate the maximum number of the downstream inputs that an upstream output","authors_text":"Herbert M. Sauro, Kyung Hyuk Kim","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"q-bio.MN","submitted_at":"2010-09-28T19:51:13Z","title":"Fan-out in Gene Regulatory Networks"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1009.5667","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":"sha256:1fd4053eeb747b84c5434e1fe23a4b9fa0a05bd0de04a54ae1898edd9d9aed4d","target":"record","created_at":"2026-05-18T04:28:47Z","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":"d55ccae325c9715af5b154e57847de6f56de31a3301c99428f179637bfc34df6","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"q-bio.MN","submitted_at":"2010-09-28T19:51:13Z","title_canon_sha256":"7bc0e7c14f60d0e0c8b8e616f45aa2fb4de61efe89dbd6d43dd3ab02718b9869"},"schema_version":"1.0","source":{"id":"1009.5667","kind":"arxiv","version":1}},"canonical_sha256":"51432563f9b2f561c1760b4e3ebbf98d23a882c944ff21aee97f063c54392ed0","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"51432563f9b2f561c1760b4e3ebbf98d23a882c944ff21aee97f063c54392ed0","first_computed_at":"2026-05-18T04:28:47.911337Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T04:28:47.911337Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"DITiBHkIzYLPRTYvHlPBSE1viDrlqXM23TVCj01B3Is3mva6y2SFUsh/Ut9N9ZBy38y5UVSLmpngBa/Z2Pa0CA==","signature_status":"signed_v1","signed_at":"2026-05-18T04:28:47.911833Z","signed_message":"canonical_sha256_bytes"},"source_id":"1009.5667","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:1fd4053eeb747b84c5434e1fe23a4b9fa0a05bd0de04a54ae1898edd9d9aed4d","sha256:7fc2a67c82ebf45b16d17676c83ad1e20c1f3bfb70fe83c7b7a4e2349f1e4057"],"state_sha256":"25864150fc94f26c3fe76bbe2dcc9b581e1b2fa99623174bdf26d7eb1250a81f"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"y2BchdrBaYIJbDVqriJLH6KWSUBaa8FpdOgn/mc+9d3xJ4PmcW3gAc/npjfVo8w11ioyAV9yRrGzQHk+t64tCg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-26T16:30:46.696214Z","bundle_sha256":"b4a1f20027dddfb25e7fb010a53928e86283c3190b7bda5ce0c4b026704690e7"}}