{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2026:GCGKT2DIISBOYEYBBMSLX5DTWO","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":"7f383a08af2b45135904bcad2fd5ff17c526ad32447a54cc4030ef9283e67225","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.AI","submitted_at":"2026-07-30T03:10:24Z","title_canon_sha256":"d3ef64958902909bf9ad1b2fb10418348b74f382b30b5d84f4f54d1b30d5998f"},"schema_version":"1.0","source":{"id":"2607.27617","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2607.27617","created_at":"2026-07-31T01:27:42Z"},{"alias_kind":"arxiv_version","alias_value":"2607.27617v1","created_at":"2026-07-31T01:27:42Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2607.27617","created_at":"2026-07-31T01:27:42Z"},{"alias_kind":"pith_short_12","alias_value":"GCGKT2DIISBO","created_at":"2026-07-31T01:27:42Z"},{"alias_kind":"pith_short_16","alias_value":"GCGKT2DIISBOYEYB","created_at":"2026-07-31T01:27:42Z"},{"alias_kind":"pith_short_8","alias_value":"GCGKT2DI","created_at":"2026-07-31T01:27:42Z"}],"graph_snapshots":[{"event_id":"sha256:66f36540a757115c08777aefbef33049c7d496c88ee22f882b47621a5f2f3098","target":"graph","created_at":"2026-07-31T01:27:42Z","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/2607.27617/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Identical language-model answers can arise from hidden states that support different future computations, so current-answer probes do not establish a reusable internal interface. We introduce forked futures: future operations are sampled only after a prefix state has formed, and states are compared through the response distributions induced by those operations. This yields an empirical causal quotient over hidden states without requiring researcher-specified latent labels. Shared, Local, Mixture, and Distributed interfaces then compete under prequential causal description length subject to fut","authors_text":"Albert Gao, Canran Xiao, Jinfeng Wei, Qiwei Wu, Qixin Zhang, Siyuan Ma, Wei-Hsing Huang, Wei Wang, Xinran Li, Yiqin Luo, Zhangji","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.AI","submitted_at":"2026-07-30T03:10:24Z","title":"Hidden APIs in Language Models: Discovering Reusable Causal Interfaces from Forked Futures"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2607.27617","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":"sha256:1f15bbed137b44895e0168389d00d0a7b2614df7bbcdcd7adefc4c9b10873ac4","target":"record","created_at":"2026-07-31T01:27:42Z","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":"7f383a08af2b45135904bcad2fd5ff17c526ad32447a54cc4030ef9283e67225","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.AI","submitted_at":"2026-07-30T03:10:24Z","title_canon_sha256":"d3ef64958902909bf9ad1b2fb10418348b74f382b30b5d84f4f54d1b30d5998f"},"schema_version":"1.0","source":{"id":"2607.27617","kind":"arxiv","version":1}},"canonical_sha256":"308ca9e8684482ec13010b24bbf473b39a78e84baec61a7979c6d4790010ac69","receipt":{"builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"308ca9e8684482ec13010b24bbf473b39a78e84baec61a7979c6d4790010ac69","first_computed_at":"2026-07-31T01:27:42.064275Z","kind":"pith_receipt","last_reissued_at":"2026-07-31T01:27:42.064275Z","receipt_version":"0.3","signature_status":"unsigned_v0"},"source_id":"2607.27617","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:1f15bbed137b44895e0168389d00d0a7b2614df7bbcdcd7adefc4c9b10873ac4","sha256:66f36540a757115c08777aefbef33049c7d496c88ee22f882b47621a5f2f3098"],"state_sha256":"49b9473ba5a624310d87fac136c6aee5a111c90a79bd70842a08391822b66225"}