{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2026:EG2MMGVWDUJ4BBOC7ZCG2IUN25","short_pith_number":"pith:EG2MMGVW","canonical_record":{"source":{"id":"2608.04003","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CL","submitted_at":"2026-08-04T17:58:05Z","cross_cats_sorted":[],"title_canon_sha256":"67d350e539e9bc53fba266ce6d2df5003497eac2e2b62ff8c599b392169e233f","abstract_canon_sha256":"6b198828573fc7cd5699a33e737d725351518c219add4178755a56743238fbf4"},"schema_version":"1.0"},"canonical_sha256":"21b4c61ab61d13c085c2fe446d228dd74c0b4d29fe81d404874668188c382489","source":{"kind":"arxiv","id":"2608.04003","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2608.04003","created_at":"2026-08-05T01:37:40Z"},{"alias_kind":"arxiv_version","alias_value":"2608.04003v1","created_at":"2026-08-05T01:37:40Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2608.04003","created_at":"2026-08-05T01:37:40Z"},{"alias_kind":"pith_short_12","alias_value":"EG2MMGVWDUJ4","created_at":"2026-08-05T01:37:40Z"},{"alias_kind":"pith_short_16","alias_value":"EG2MMGVWDUJ4BBOC","created_at":"2026-08-05T01:37:40Z"},{"alias_kind":"pith_short_8","alias_value":"EG2MMGVW","created_at":"2026-08-05T01:37:40Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2026:EG2MMGVWDUJ4BBOC7ZCG2IUN25","target":"record","payload":{"canonical_record":{"source":{"id":"2608.04003","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CL","submitted_at":"2026-08-04T17:58:05Z","cross_cats_sorted":[],"title_canon_sha256":"67d350e539e9bc53fba266ce6d2df5003497eac2e2b62ff8c599b392169e233f","abstract_canon_sha256":"6b198828573fc7cd5699a33e737d725351518c219add4178755a56743238fbf4"},"schema_version":"1.0"},"canonical_sha256":"21b4c61ab61d13c085c2fe446d228dd74c0b4d29fe81d404874668188c382489","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-08-05T01:37:40.821940Z","signature_b64":"ZxHwwSQAOveL3EhQWdLJh8b9nGSO4NJL8/BY3cjPerhDp4XEwcEju5lChyGPi2xZ60d0rLmajkaoN6CYWRkbDA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"21b4c61ab61d13c085c2fe446d228dd74c0b4d29fe81d404874668188c382489","last_reissued_at":"2026-08-05T01:37:40.820444Z","signature_status":"signed_v1","first_computed_at":"2026-08-05T01:37:40.820444Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2608.04003","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":"2026-08-05T01:37:40Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"rJS5rnQikfPokobDCo2aSU+2C7wPDfFOAOsVRwFKiqmlO2E5uTSGSCXJ3JFUcbqYCuuzyTWFdkmcqCSLG6l5Dw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-06T18:13:19.234500Z"},"content_sha256":"02d6366848df2f8c1e9925f71ff67ed138e21f3f1adfda7f7f4e065b0c40dd0b","schema_version":"1.0","event_id":"sha256:02d6366848df2f8c1e9925f71ff67ed138e21f3f1adfda7f7f4e065b0c40dd0b"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2026:EG2MMGVWDUJ4BBOC7ZCG2IUN25","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"PAST-Bench: Benchmarking the Foundations of Recursive Self-Improvement in Personal Agents","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cs.CL","authors_text":"Ling Yang, Mengdi Wang, Shuhan Xue, Yichen Shen, Yingcheng Wu, Yinjie Wang, Yuxin Chen, Zhenfei Yin, Zixin Ding","submitted_at":"2026-08-04T17:58:05Z","abstract_excerpt":"Recursive self-improvement requires agents to turn accumulated experience into better future behavior. Personal AI agents offer a concrete setting for studying this capability because they retain preferences, task histories, tool routines, and learned skills across sessions. Yet whether retained experience actually improves them over time has not been systematically tested. We introduce PAST-Bench, a benchmark designed to isolate this question. Each agent runs through ordered sequences of fresh-session tasks under matched conditions that turn retained experience on and off. It spans 26 scenari"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2608.04003","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/2608.04003/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":"2026-08-05T01:37:40Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Y8Q4JOObRrkpmXz5nNu5Y1rHa3fzQs6Ghjl62LSpTlV6IUHeDEnGYY7kDSVXuKtvo01jaBPSbV13K90FLtvdCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-06T18:13:19.235000Z"},"content_sha256":"acc84911e1639ddc2fb27b8cbccb901333cae5199fd4299f05c340c739268d83","schema_version":"1.0","event_id":"sha256:acc84911e1639ddc2fb27b8cbccb901333cae5199fd4299f05c340c739268d83"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/EG2MMGVWDUJ4BBOC7ZCG2IUN25/bundle.json","state_url":"https://pith.science/pith/EG2MMGVWDUJ4BBOC7ZCG2IUN25/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/EG2MMGVWDUJ4BBOC7ZCG2IUN25/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":"2026-08-06T18:13:19Z","links":{"resolver":"https://pith.science/pith/EG2MMGVWDUJ4BBOC7ZCG2IUN25","bundle":"https://pith.science/pith/EG2MMGVWDUJ4BBOC7ZCG2IUN25/bundle.json","state":"https://pith.science/pith/EG2MMGVWDUJ4BBOC7ZCG2IUN25/state.json","well_known_bundle":"https://pith.science/.well-known/pith/EG2MMGVWDUJ4BBOC7ZCG2IUN25/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2026:EG2MMGVWDUJ4BBOC7ZCG2IUN25","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":"6b198828573fc7cd5699a33e737d725351518c219add4178755a56743238fbf4","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CL","submitted_at":"2026-08-04T17:58:05Z","title_canon_sha256":"67d350e539e9bc53fba266ce6d2df5003497eac2e2b62ff8c599b392169e233f"},"schema_version":"1.0","source":{"id":"2608.04003","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2608.04003","created_at":"2026-08-05T01:37:40Z"},{"alias_kind":"arxiv_version","alias_value":"2608.04003v1","created_at":"2026-08-05T01:37:40Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2608.04003","created_at":"2026-08-05T01:37:40Z"},{"alias_kind":"pith_short_12","alias_value":"EG2MMGVWDUJ4","created_at":"2026-08-05T01:37:40Z"},{"alias_kind":"pith_short_16","alias_value":"EG2MMGVWDUJ4BBOC","created_at":"2026-08-05T01:37:40Z"},{"alias_kind":"pith_short_8","alias_value":"EG2MMGVW","created_at":"2026-08-05T01:37:40Z"}],"graph_snapshots":[{"event_id":"sha256:acc84911e1639ddc2fb27b8cbccb901333cae5199fd4299f05c340c739268d83","target":"graph","created_at":"2026-08-05T01:37:40Z","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/2608.04003/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Recursive self-improvement requires agents to turn accumulated experience into better future behavior. Personal AI agents offer a concrete setting for studying this capability because they retain preferences, task histories, tool routines, and learned skills across sessions. Yet whether retained experience actually improves them over time has not been systematically tested. We introduce PAST-Bench, a benchmark designed to isolate this question. Each agent runs through ordered sequences of fresh-session tasks under matched conditions that turn retained experience on and off. It spans 26 scenari","authors_text":"Ling Yang, Mengdi Wang, Shuhan Xue, Yichen Shen, Yingcheng Wu, Yinjie Wang, Yuxin Chen, Zhenfei Yin, Zixin Ding","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CL","submitted_at":"2026-08-04T17:58:05Z","title":"PAST-Bench: Benchmarking the Foundations of Recursive Self-Improvement in Personal Agents"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2608.04003","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":"sha256:02d6366848df2f8c1e9925f71ff67ed138e21f3f1adfda7f7f4e065b0c40dd0b","target":"record","created_at":"2026-08-05T01:37:40Z","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":"6b198828573fc7cd5699a33e737d725351518c219add4178755a56743238fbf4","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CL","submitted_at":"2026-08-04T17:58:05Z","title_canon_sha256":"67d350e539e9bc53fba266ce6d2df5003497eac2e2b62ff8c599b392169e233f"},"schema_version":"1.0","source":{"id":"2608.04003","kind":"arxiv","version":1}},"canonical_sha256":"21b4c61ab61d13c085c2fe446d228dd74c0b4d29fe81d404874668188c382489","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"21b4c61ab61d13c085c2fe446d228dd74c0b4d29fe81d404874668188c382489","first_computed_at":"2026-08-05T01:37:40.820444Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-08-05T01:37:40.820444Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"ZxHwwSQAOveL3EhQWdLJh8b9nGSO4NJL8/BY3cjPerhDp4XEwcEju5lChyGPi2xZ60d0rLmajkaoN6CYWRkbDA==","signature_status":"signed_v1","signed_at":"2026-08-05T01:37:40.821940Z","signed_message":"canonical_sha256_bytes"},"source_id":"2608.04003","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:02d6366848df2f8c1e9925f71ff67ed138e21f3f1adfda7f7f4e065b0c40dd0b","sha256:acc84911e1639ddc2fb27b8cbccb901333cae5199fd4299f05c340c739268d83"],"state_sha256":"d3843c1aedecb730a8dade8e296aa47c6d225c52e181317d77496c527bf42363"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"LK7ru/jjD+h0Fx4j39vxr0z5FF3rsQLE60+QKhF0WPVQog5ltqMZQAqIEdSVCA/uF+XEWdeI639hGTzg61bQBA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-06T18:13:19.238854Z","bundle_sha256":"eb6226b697c63cd201e5d6ec9ee72791043a3298eda4c4ce4e9d1506dad8610c"}}