{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2009:PUFYEF6NHWHILFAXLSSZQOF53G","short_pith_number":"pith:PUFYEF6N","canonical_record":{"source":{"id":"0904.1882","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.soc-ph","submitted_at":"2009-04-12T21:06:50Z","cross_cats_sorted":["physics.comp-ph"],"title_canon_sha256":"bbec202c67c0c3d741c394f78c4b0ecc5bf5cc488967acbeea67ea13fc66d566","abstract_canon_sha256":"1020510ee931a8dbb80fe0eaabcf0a1d6130d7f33049b910347f89bee065906c"},"schema_version":"1.0"},"canonical_sha256":"7d0b8217cd3d8e8594175ca59838bdd9ba4f19a92990bca4bc5f6ee7e2e94bdc","source":{"kind":"arxiv","id":"0904.1882","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0904.1882","created_at":"2026-05-18T04:39:51Z"},{"alias_kind":"arxiv_version","alias_value":"0904.1882v1","created_at":"2026-05-18T04:39:51Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0904.1882","created_at":"2026-05-18T04:39:51Z"},{"alias_kind":"pith_short_12","alias_value":"PUFYEF6NHWHI","created_at":"2026-05-18T12:26:01Z"},{"alias_kind":"pith_short_16","alias_value":"PUFYEF6NHWHILFAX","created_at":"2026-05-18T12:26:01Z"},{"alias_kind":"pith_short_8","alias_value":"PUFYEF6N","created_at":"2026-05-18T12:26:01Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2009:PUFYEF6NHWHILFAXLSSZQOF53G","target":"record","payload":{"canonical_record":{"source":{"id":"0904.1882","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.soc-ph","submitted_at":"2009-04-12T21:06:50Z","cross_cats_sorted":["physics.comp-ph"],"title_canon_sha256":"bbec202c67c0c3d741c394f78c4b0ecc5bf5cc488967acbeea67ea13fc66d566","abstract_canon_sha256":"1020510ee931a8dbb80fe0eaabcf0a1d6130d7f33049b910347f89bee065906c"},"schema_version":"1.0"},"canonical_sha256":"7d0b8217cd3d8e8594175ca59838bdd9ba4f19a92990bca4bc5f6ee7e2e94bdc","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T04:39:51.419171Z","signature_b64":"bbys3ptoLofbtk1ItPCao9Fl1fuxgds/F18GqIMnaMBeUjiYpNCp7J+l/RZ0jBl9YspJUS3GR8har3Fs1WbyAA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"7d0b8217cd3d8e8594175ca59838bdd9ba4f19a92990bca4bc5f6ee7e2e94bdc","last_reissued_at":"2026-05-18T04:39:51.418510Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T04:39:51.418510Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"0904.1882","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":"2026-05-18T04:39:51Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"eDNjkKFlSkeRW3+Etn3VTWUmRdWehP+wwAgBTJhTxk/Aq98obLDdsEM+GIdo8Wnb/TuvT2oKyxvETZ6F3m+/DQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-02T17:31:23.978024Z"},"content_sha256":"5d17a680096ce83dbcfc28e35ba0d908e3e8707bc40b083c750295597893f3e6","schema_version":"1.0","event_id":"sha256:5d17a680096ce83dbcfc28e35ba0d908e3e8707bc40b083c750295597893f3e6"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2009:PUFYEF6NHWHILFAXLSSZQOF53G","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"A middle option for choices in the Continuous Opinions and Discrete Actions model","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["physics.comp-ph"],"primary_cat":"physics.soc-ph","authors_text":"Andre C. R. Martins","submitted_at":"2009-04-12T21:06:50Z","abstract_excerpt":"Modeling the conditions for the emergence of extremism is a very important problem, with clear applications for describing the interaction among individuals. Traditional models either are not suited for the task, as in the case of discrete models, or, like Bounded Confidence models, are built with rules that make opinions tend to a common ground between agents or not change at all. Continuous Opinions and Discrete Actions (CODA) model allowed us to observe the emergence of extremist agents, even when every agent was initially a moderate, due to local influence effects. In this paper, the probl"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0904.1882","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":"2026-05-18T04:39:51Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"hHhj9s6nW0pxsTlgLuc2tWufaZGcHuvD2BjkPPGOCjqX7VFS0EvC4T4gQc+hhkFv7X4t4hCC9qxrzL0pJhr7Cg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-02T17:31:23.978858Z"},"content_sha256":"98c0cc13a3528bb4ba0b18a94b7d4c783e2d0326bee0b0783fdd865257d2d077","schema_version":"1.0","event_id":"sha256:98c0cc13a3528bb4ba0b18a94b7d4c783e2d0326bee0b0783fdd865257d2d077"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/PUFYEF6NHWHILFAXLSSZQOF53G/bundle.json","state_url":"https://pith.science/pith/PUFYEF6NHWHILFAXLSSZQOF53G/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/PUFYEF6NHWHILFAXLSSZQOF53G/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":"2026-06-02T17:31:23Z","links":{"resolver":"https://pith.science/pith/PUFYEF6NHWHILFAXLSSZQOF53G","bundle":"https://pith.science/pith/PUFYEF6NHWHILFAXLSSZQOF53G/bundle.json","state":"https://pith.science/pith/PUFYEF6NHWHILFAXLSSZQOF53G/state.json","well_known_bundle":"https://pith.science/.well-known/pith/PUFYEF6NHWHILFAXLSSZQOF53G/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2009:PUFYEF6NHWHILFAXLSSZQOF53G","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":"1020510ee931a8dbb80fe0eaabcf0a1d6130d7f33049b910347f89bee065906c","cross_cats_sorted":["physics.comp-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.soc-ph","submitted_at":"2009-04-12T21:06:50Z","title_canon_sha256":"bbec202c67c0c3d741c394f78c4b0ecc5bf5cc488967acbeea67ea13fc66d566"},"schema_version":"1.0","source":{"id":"0904.1882","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0904.1882","created_at":"2026-05-18T04:39:51Z"},{"alias_kind":"arxiv_version","alias_value":"0904.1882v1","created_at":"2026-05-18T04:39:51Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0904.1882","created_at":"2026-05-18T04:39:51Z"},{"alias_kind":"pith_short_12","alias_value":"PUFYEF6NHWHI","created_at":"2026-05-18T12:26:01Z"},{"alias_kind":"pith_short_16","alias_value":"PUFYEF6NHWHILFAX","created_at":"2026-05-18T12:26:01Z"},{"alias_kind":"pith_short_8","alias_value":"PUFYEF6N","created_at":"2026-05-18T12:26:01Z"}],"graph_snapshots":[{"event_id":"sha256:98c0cc13a3528bb4ba0b18a94b7d4c783e2d0326bee0b0783fdd865257d2d077","target":"graph","created_at":"2026-05-18T04:39:51Z","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":"Modeling the conditions for the emergence of extremism is a very important problem, with clear applications for describing the interaction among individuals. Traditional models either are not suited for the task, as in the case of discrete models, or, like Bounded Confidence models, are built with rules that make opinions tend to a common ground between agents or not change at all. Continuous Opinions and Discrete Actions (CODA) model allowed us to observe the emergence of extremist agents, even when every agent was initially a moderate, due to local influence effects. In this paper, the probl","authors_text":"Andre C. R. Martins","cross_cats":["physics.comp-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.soc-ph","submitted_at":"2009-04-12T21:06:50Z","title":"A middle option for choices in the Continuous Opinions and Discrete Actions model"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0904.1882","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":"sha256:5d17a680096ce83dbcfc28e35ba0d908e3e8707bc40b083c750295597893f3e6","target":"record","created_at":"2026-05-18T04:39:51Z","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":"1020510ee931a8dbb80fe0eaabcf0a1d6130d7f33049b910347f89bee065906c","cross_cats_sorted":["physics.comp-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.soc-ph","submitted_at":"2009-04-12T21:06:50Z","title_canon_sha256":"bbec202c67c0c3d741c394f78c4b0ecc5bf5cc488967acbeea67ea13fc66d566"},"schema_version":"1.0","source":{"id":"0904.1882","kind":"arxiv","version":1}},"canonical_sha256":"7d0b8217cd3d8e8594175ca59838bdd9ba4f19a92990bca4bc5f6ee7e2e94bdc","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"7d0b8217cd3d8e8594175ca59838bdd9ba4f19a92990bca4bc5f6ee7e2e94bdc","first_computed_at":"2026-05-18T04:39:51.418510Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T04:39:51.418510Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"bbys3ptoLofbtk1ItPCao9Fl1fuxgds/F18GqIMnaMBeUjiYpNCp7J+l/RZ0jBl9YspJUS3GR8har3Fs1WbyAA==","signature_status":"signed_v1","signed_at":"2026-05-18T04:39:51.419171Z","signed_message":"canonical_sha256_bytes"},"source_id":"0904.1882","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:5d17a680096ce83dbcfc28e35ba0d908e3e8707bc40b083c750295597893f3e6","sha256:98c0cc13a3528bb4ba0b18a94b7d4c783e2d0326bee0b0783fdd865257d2d077"],"state_sha256":"51ecc8c80f35e1a23fcf817e9cd6cb189c91d345a29b0df336303aabbe30a1dc"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"PfCgUp8GwHRiCMAwd+yIJUTxzqkXTbQ/LVoa09qClnRcZld6l+x9NZNEt33jldY0NQOdQ0h9XZK7D/9csYo0Cw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-02T17:31:23.981992Z","bundle_sha256":"4b081cf94f73673b8595330c2cd40e7754c1a806b339f88c17c78bc936e9c3de"}}