{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2026:IZNGAIOCWWW2JOT745K4P6M4KL","short_pith_number":"pith:IZNGAIOC","canonical_record":{"source":{"id":"2605.23031","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.PL","submitted_at":"2026-05-21T20:56:27Z","cross_cats_sorted":[],"title_canon_sha256":"740f301e2024793bcd7dad64e61357c8b45e6fd93640bc952ebb219fb0097785","abstract_canon_sha256":"918723e7a1dfb57053705520adeb6ab01443d94b550684c5c2f83ca9b5293266"},"schema_version":"1.0"},"canonical_sha256":"465a6021c2b5ada4ba7fe755c7f99c52fdce9e68526b55b4f5311d438241bf1e","source":{"kind":"arxiv","id":"2605.23031","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2605.23031","created_at":"2026-05-25T02:01:35Z"},{"alias_kind":"arxiv_version","alias_value":"2605.23031v1","created_at":"2026-05-25T02:01:35Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2605.23031","created_at":"2026-05-25T02:01:35Z"},{"alias_kind":"pith_short_12","alias_value":"IZNGAIOCWWW2","created_at":"2026-05-25T02:01:35Z"},{"alias_kind":"pith_short_16","alias_value":"IZNGAIOCWWW2JOT7","created_at":"2026-05-25T02:01:35Z"},{"alias_kind":"pith_short_8","alias_value":"IZNGAIOC","created_at":"2026-05-25T02:01:35Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2026:IZNGAIOCWWW2JOT745K4P6M4KL","target":"record","payload":{"canonical_record":{"source":{"id":"2605.23031","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.PL","submitted_at":"2026-05-21T20:56:27Z","cross_cats_sorted":[],"title_canon_sha256":"740f301e2024793bcd7dad64e61357c8b45e6fd93640bc952ebb219fb0097785","abstract_canon_sha256":"918723e7a1dfb57053705520adeb6ab01443d94b550684c5c2f83ca9b5293266"},"schema_version":"1.0"},"canonical_sha256":"465a6021c2b5ada4ba7fe755c7f99c52fdce9e68526b55b4f5311d438241bf1e","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-25T02:01:35.384180Z","signature_b64":"9KyCbbtMpplTuBllUXzFNVevMiFR3FO8WXmHKjwPyd8ZcDKqoovQTAaiyugYBi5KQ5gyQdh6X7EQrbYwpQkgBA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"465a6021c2b5ada4ba7fe755c7f99c52fdce9e68526b55b4f5311d438241bf1e","last_reissued_at":"2026-05-25T02:01:35.383446Z","signature_status":"signed_v1","first_computed_at":"2026-05-25T02:01:35.383446Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2605.23031","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":"2026-05-25T02:01:35Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"cqrqAAern8HTsXpAA2eGYuInOYtklWBLs70HxS2JWxjhRtgN/skwhqdJLf5Ziq/mWJnyigprRAEXDaUyKRZCDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T13:25:20.991628Z"},"content_sha256":"fa43a436f3009b60ece94f776226bc291d370960d1acc75eda746ee289dd717e","schema_version":"1.0","event_id":"sha256:fa43a436f3009b60ece94f776226bc291d370960d1acc75eda746ee289dd717e"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2026:IZNGAIOCWWW2JOT745K4P6M4KL","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Step in Tine: Forking Processes in Functional Choreographies","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"cs.PL","authors_text":"Andrew K. Hirsch, Ashley Samuelson, Ethan Cecchetti","submitted_at":"2026-05-21T20:56:27Z","abstract_excerpt":"Traditional concurrent-programming techniques require programmers to painstakingly write programs for each participant in a concurrent system. Choreographic programming, in contrast, allows a programmer to write one centralized program and compile it to individual programs. This approach simplifies critical properties like deadlock freedom, but it complicates forking new processes, a core primitive in concurrent programming. This work addresses that gap with the choreographic fork calculus $\\lambda{\\pitchfork}$, the first functional choreographic language with process forking. $\\lambda{\\pitchf"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2605.23031","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/2605.23031/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":"2026-05-25T02:01:35Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ESguFxcbzNdeWyRAvNdM3jDxcLWzxX9UOuVnfPYKNsHybGct3J8t5t3P9qTdy5wnymkkee/3voijrTY7j46FCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T13:25:20.992811Z"},"content_sha256":"07f56f1ee26f9ec590f52596db95dd350526ce4f8b4a7156f7243252f7c3193a","schema_version":"1.0","event_id":"sha256:07f56f1ee26f9ec590f52596db95dd350526ce4f8b4a7156f7243252f7c3193a"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/IZNGAIOCWWW2JOT745K4P6M4KL/bundle.json","state_url":"https://pith.science/pith/IZNGAIOCWWW2JOT745K4P6M4KL/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/IZNGAIOCWWW2JOT745K4P6M4KL/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":"2026-05-27T13:25:20Z","links":{"resolver":"https://pith.science/pith/IZNGAIOCWWW2JOT745K4P6M4KL","bundle":"https://pith.science/pith/IZNGAIOCWWW2JOT745K4P6M4KL/bundle.json","state":"https://pith.science/pith/IZNGAIOCWWW2JOT745K4P6M4KL/state.json","well_known_bundle":"https://pith.science/.well-known/pith/IZNGAIOCWWW2JOT745K4P6M4KL/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2026:IZNGAIOCWWW2JOT745K4P6M4KL","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":"918723e7a1dfb57053705520adeb6ab01443d94b550684c5c2f83ca9b5293266","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.PL","submitted_at":"2026-05-21T20:56:27Z","title_canon_sha256":"740f301e2024793bcd7dad64e61357c8b45e6fd93640bc952ebb219fb0097785"},"schema_version":"1.0","source":{"id":"2605.23031","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2605.23031","created_at":"2026-05-25T02:01:35Z"},{"alias_kind":"arxiv_version","alias_value":"2605.23031v1","created_at":"2026-05-25T02:01:35Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2605.23031","created_at":"2026-05-25T02:01:35Z"},{"alias_kind":"pith_short_12","alias_value":"IZNGAIOCWWW2","created_at":"2026-05-25T02:01:35Z"},{"alias_kind":"pith_short_16","alias_value":"IZNGAIOCWWW2JOT7","created_at":"2026-05-25T02:01:35Z"},{"alias_kind":"pith_short_8","alias_value":"IZNGAIOC","created_at":"2026-05-25T02:01:35Z"}],"graph_snapshots":[{"event_id":"sha256:07f56f1ee26f9ec590f52596db95dd350526ce4f8b4a7156f7243252f7c3193a","target":"graph","created_at":"2026-05-25T02:01:35Z","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/2605.23031/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Traditional concurrent-programming techniques require programmers to painstakingly write programs for each participant in a concurrent system. Choreographic programming, in contrast, allows a programmer to write one centralized program and compile it to individual programs. This approach simplifies critical properties like deadlock freedom, but it complicates forking new processes, a core primitive in concurrent programming. This work addresses that gap with the choreographic fork calculus $\\lambda{\\pitchfork}$, the first functional choreographic language with process forking. $\\lambda{\\pitchf","authors_text":"Andrew K. Hirsch, Ashley Samuelson, Ethan Cecchetti","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.PL","submitted_at":"2026-05-21T20:56:27Z","title":"Step in Tine: Forking Processes in Functional Choreographies"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2605.23031","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:fa43a436f3009b60ece94f776226bc291d370960d1acc75eda746ee289dd717e","target":"record","created_at":"2026-05-25T02:01:35Z","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":"918723e7a1dfb57053705520adeb6ab01443d94b550684c5c2f83ca9b5293266","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.PL","submitted_at":"2026-05-21T20:56:27Z","title_canon_sha256":"740f301e2024793bcd7dad64e61357c8b45e6fd93640bc952ebb219fb0097785"},"schema_version":"1.0","source":{"id":"2605.23031","kind":"arxiv","version":1}},"canonical_sha256":"465a6021c2b5ada4ba7fe755c7f99c52fdce9e68526b55b4f5311d438241bf1e","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"465a6021c2b5ada4ba7fe755c7f99c52fdce9e68526b55b4f5311d438241bf1e","first_computed_at":"2026-05-25T02:01:35.383446Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-25T02:01:35.383446Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"9KyCbbtMpplTuBllUXzFNVevMiFR3FO8WXmHKjwPyd8ZcDKqoovQTAaiyugYBi5KQ5gyQdh6X7EQrbYwpQkgBA==","signature_status":"signed_v1","signed_at":"2026-05-25T02:01:35.384180Z","signed_message":"canonical_sha256_bytes"},"source_id":"2605.23031","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:fa43a436f3009b60ece94f776226bc291d370960d1acc75eda746ee289dd717e","sha256:07f56f1ee26f9ec590f52596db95dd350526ce4f8b4a7156f7243252f7c3193a"],"state_sha256":"068714ac319ec127c6aa425484e9de5d5a92b453957904ad0f8148a74d12dd4a"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"XAFpTZYE8VlwlDuHSiqAFO302GnOGBClFqowvkk2ddPc179RM4zdkvSk80eRN9/1J46ZqTjl3cwWCI8zhuibBg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-27T13:25:20.996860Z","bundle_sha256":"93d3e7c4482e229ed5eac7c54193caf0daccdeb0288e401b122d137936254185"}}