{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2015:AVUBA46LVA6RDSV7KATUEPCW5C","short_pith_number":"pith:AVUBA46L","canonical_record":{"source":{"id":"1504.02516","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"q-fin.EC","submitted_at":"2015-04-09T23:14:39Z","cross_cats_sorted":[],"title_canon_sha256":"51498f5a2e2d4502816a14647bfd2e1104211326e5d2c681a721d93e990e82f9","abstract_canon_sha256":"2436a370a26b5bfaa3aa794e31812f50797e34c5d994f29a296af86791e26d1d"},"schema_version":"1.0"},"canonical_sha256":"05681073cba83d11cabf5027423c56e8a44862624416552296781037dcd6b1ba","source":{"kind":"arxiv","id":"1504.02516","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1504.02516","created_at":"2026-05-18T02:19:07Z"},{"alias_kind":"arxiv_version","alias_value":"1504.02516v1","created_at":"2026-05-18T02:19:07Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1504.02516","created_at":"2026-05-18T02:19:07Z"},{"alias_kind":"pith_short_12","alias_value":"AVUBA46LVA6R","created_at":"2026-05-18T12:29:10Z"},{"alias_kind":"pith_short_16","alias_value":"AVUBA46LVA6RDSV7","created_at":"2026-05-18T12:29:10Z"},{"alias_kind":"pith_short_8","alias_value":"AVUBA46L","created_at":"2026-05-18T12:29:10Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2015:AVUBA46LVA6RDSV7KATUEPCW5C","target":"record","payload":{"canonical_record":{"source":{"id":"1504.02516","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"q-fin.EC","submitted_at":"2015-04-09T23:14:39Z","cross_cats_sorted":[],"title_canon_sha256":"51498f5a2e2d4502816a14647bfd2e1104211326e5d2c681a721d93e990e82f9","abstract_canon_sha256":"2436a370a26b5bfaa3aa794e31812f50797e34c5d994f29a296af86791e26d1d"},"schema_version":"1.0"},"canonical_sha256":"05681073cba83d11cabf5027423c56e8a44862624416552296781037dcd6b1ba","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:19:07.446866Z","signature_b64":"7PYsI7pQvwbltEPL1OSTU5Y0XDZC2sJJ2e/gt/5TsjkRMUA8PLSIceya78oWONcTTabBmiSmJBdJkPH8nYm3Dg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"05681073cba83d11cabf5027423c56e8a44862624416552296781037dcd6b1ba","last_reissued_at":"2026-05-18T02:19:07.446372Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:19:07.446372Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1504.02516","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":"2026-05-18T02:19:07Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"tu7i4vKBNyWESO7CD9OXJKtgMlPNxuNR4T3/Zi6c7E1CzvHB1nQy3HOJrzW4+yDIgl/0gZ020uePS06F4vXvBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-25T09:44:48.768511Z"},"content_sha256":"4cdd6387360ede578e517a96e1e9b1976bc91a6607b5509e7c5bdba214bdb6a9","schema_version":"1.0","event_id":"sha256:4cdd6387360ede578e517a96e1e9b1976bc91a6607b5509e7c5bdba214bdb6a9"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2015:AVUBA46LVA6RDSV7KATUEPCW5C","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Empirical Relevance of Ambiguity in First Price Auction Models","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"q-fin.EC","authors_text":"Dong-Hyuk Kim, Gaurab Aryal","submitted_at":"2015-04-09T23:14:39Z","abstract_excerpt":"We study the identification and estimation of first-price auction models where bidders have ambiguity about the valuation distribution and their preferences are represented by maxmin expected utility. When entry is exogenous, the distribution and ambiguity structure are nonparametrically identified, separately from risk aversion (CRRA). We propose a flexible Bayesian method based on Bernstein polynomials. Monte Carlo experiments show that our method estimates parameters precisely, and chooses reserve prices with (nearly) optimal revenues, whether there is ambiguity or not. Furthermore, if the "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1504.02516","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":"2026-05-18T02:19:07Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"SbPETu7e+wumhZAu0XZOfbmhCpR7FnmuefDbrKA2t7DgdGYkejPLfbXjna9Otfb3K3iG4I2gQD1ohFNiGwDdAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-25T09:44:48.768855Z"},"content_sha256":"45909d060dc256a60a45e90fa4a5e6a15ec738149786d5ba052f5b50c399043c","schema_version":"1.0","event_id":"sha256:45909d060dc256a60a45e90fa4a5e6a15ec738149786d5ba052f5b50c399043c"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/AVUBA46LVA6RDSV7KATUEPCW5C/bundle.json","state_url":"https://pith.science/pith/AVUBA46LVA6RDSV7KATUEPCW5C/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/AVUBA46LVA6RDSV7KATUEPCW5C/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":"2026-06-25T09:44:48Z","links":{"resolver":"https://pith.science/pith/AVUBA46LVA6RDSV7KATUEPCW5C","bundle":"https://pith.science/pith/AVUBA46LVA6RDSV7KATUEPCW5C/bundle.json","state":"https://pith.science/pith/AVUBA46LVA6RDSV7KATUEPCW5C/state.json","well_known_bundle":"https://pith.science/.well-known/pith/AVUBA46LVA6RDSV7KATUEPCW5C/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:AVUBA46LVA6RDSV7KATUEPCW5C","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":"2436a370a26b5bfaa3aa794e31812f50797e34c5d994f29a296af86791e26d1d","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"q-fin.EC","submitted_at":"2015-04-09T23:14:39Z","title_canon_sha256":"51498f5a2e2d4502816a14647bfd2e1104211326e5d2c681a721d93e990e82f9"},"schema_version":"1.0","source":{"id":"1504.02516","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1504.02516","created_at":"2026-05-18T02:19:07Z"},{"alias_kind":"arxiv_version","alias_value":"1504.02516v1","created_at":"2026-05-18T02:19:07Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1504.02516","created_at":"2026-05-18T02:19:07Z"},{"alias_kind":"pith_short_12","alias_value":"AVUBA46LVA6R","created_at":"2026-05-18T12:29:10Z"},{"alias_kind":"pith_short_16","alias_value":"AVUBA46LVA6RDSV7","created_at":"2026-05-18T12:29:10Z"},{"alias_kind":"pith_short_8","alias_value":"AVUBA46L","created_at":"2026-05-18T12:29:10Z"}],"graph_snapshots":[{"event_id":"sha256:45909d060dc256a60a45e90fa4a5e6a15ec738149786d5ba052f5b50c399043c","target":"graph","created_at":"2026-05-18T02:19:07Z","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":"We study the identification and estimation of first-price auction models where bidders have ambiguity about the valuation distribution and their preferences are represented by maxmin expected utility. When entry is exogenous, the distribution and ambiguity structure are nonparametrically identified, separately from risk aversion (CRRA). We propose a flexible Bayesian method based on Bernstein polynomials. Monte Carlo experiments show that our method estimates parameters precisely, and chooses reserve prices with (nearly) optimal revenues, whether there is ambiguity or not. Furthermore, if the ","authors_text":"Dong-Hyuk Kim, Gaurab Aryal","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"q-fin.EC","submitted_at":"2015-04-09T23:14:39Z","title":"Empirical Relevance of Ambiguity in First Price Auction Models"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1504.02516","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":"sha256:4cdd6387360ede578e517a96e1e9b1976bc91a6607b5509e7c5bdba214bdb6a9","target":"record","created_at":"2026-05-18T02:19:07Z","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":"2436a370a26b5bfaa3aa794e31812f50797e34c5d994f29a296af86791e26d1d","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"q-fin.EC","submitted_at":"2015-04-09T23:14:39Z","title_canon_sha256":"51498f5a2e2d4502816a14647bfd2e1104211326e5d2c681a721d93e990e82f9"},"schema_version":"1.0","source":{"id":"1504.02516","kind":"arxiv","version":1}},"canonical_sha256":"05681073cba83d11cabf5027423c56e8a44862624416552296781037dcd6b1ba","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"05681073cba83d11cabf5027423c56e8a44862624416552296781037dcd6b1ba","first_computed_at":"2026-05-18T02:19:07.446372Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:19:07.446372Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"7PYsI7pQvwbltEPL1OSTU5Y0XDZC2sJJ2e/gt/5TsjkRMUA8PLSIceya78oWONcTTabBmiSmJBdJkPH8nYm3Dg==","signature_status":"signed_v1","signed_at":"2026-05-18T02:19:07.446866Z","signed_message":"canonical_sha256_bytes"},"source_id":"1504.02516","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:4cdd6387360ede578e517a96e1e9b1976bc91a6607b5509e7c5bdba214bdb6a9","sha256:45909d060dc256a60a45e90fa4a5e6a15ec738149786d5ba052f5b50c399043c"],"state_sha256":"12253d06fa20d1116004616698f9c684b969afcdf97823664718a8e1632465ed"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Yd4zFy5h79SSGQClcGaBC3gXNiWAzll8S4jruD+fRcUVKeLzEJJBdTDOXWKhPLfKPavKpVSzj31/Nt3Uv3zEBw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-25T09:44:48.770713Z","bundle_sha256":"9fe6c0a04f06ca0d926b90dcd8092a2bc21a4f3e3907526f7d3fb5a15001b4fc"}}