{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2015:OM6FAPVJRYKEWRAEM45U3FEEQA","short_pith_number":"pith:OM6FAPVJ","canonical_record":{"source":{"id":"1506.01374","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"math.NT","submitted_at":"2015-06-03T20:00:19Z","cross_cats_sorted":["math.AG"],"title_canon_sha256":"baad8ee9f4d39b0e4eb26c5b935dc6e2345e4382dbda9e330056ab25c94ee35c","abstract_canon_sha256":"061866655ef70f05980d52784d0035130a0a2a287799c6f7bf9c575e8a536375"},"schema_version":"1.0"},"canonical_sha256":"733c503ea98e144b4404673b4d94848034da57251a34a39a217a79699ffc8dd6","source":{"kind":"arxiv","id":"1506.01374","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1506.01374","created_at":"2026-05-18T01:10:45Z"},{"alias_kind":"arxiv_version","alias_value":"1506.01374v2","created_at":"2026-05-18T01:10:45Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1506.01374","created_at":"2026-05-18T01:10:45Z"},{"alias_kind":"pith_short_12","alias_value":"OM6FAPVJRYKE","created_at":"2026-05-18T12:29:34Z"},{"alias_kind":"pith_short_16","alias_value":"OM6FAPVJRYKEWRAE","created_at":"2026-05-18T12:29:34Z"},{"alias_kind":"pith_short_8","alias_value":"OM6FAPVJ","created_at":"2026-05-18T12:29:34Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2015:OM6FAPVJRYKEWRAEM45U3FEEQA","target":"record","payload":{"canonical_record":{"source":{"id":"1506.01374","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"math.NT","submitted_at":"2015-06-03T20:00:19Z","cross_cats_sorted":["math.AG"],"title_canon_sha256":"baad8ee9f4d39b0e4eb26c5b935dc6e2345e4382dbda9e330056ab25c94ee35c","abstract_canon_sha256":"061866655ef70f05980d52784d0035130a0a2a287799c6f7bf9c575e8a536375"},"schema_version":"1.0"},"canonical_sha256":"733c503ea98e144b4404673b4d94848034da57251a34a39a217a79699ffc8dd6","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:10:45.981394Z","signature_b64":"MFp6ShiP6D94TLL4pBZdDhDwiwnQUZJIfJWJuABx3uWtHkMyw/L8OVAs4PAFSxqC1fST9/Hho9fWvECgNHmcCQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"733c503ea98e144b4404673b4d94848034da57251a34a39a217a79699ffc8dd6","last_reissued_at":"2026-05-18T01:10:45.980845Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:10:45.980845Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1506.01374","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T01:10:45Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"XVvnNLdZz3JKXHnCWsvN3iloboATE7y5ZhfDqjG54TblYP8CBBPtsjXhvUz2WW5YElEQcPFZIF6xOtjgwv6XCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-31T18:50:38.748695Z"},"content_sha256":"c0a1c92a5f3da16316f22905660f1c5256d54fa3aca821cbd93bd2ec9e6eea7f","schema_version":"1.0","event_id":"sha256:c0a1c92a5f3da16316f22905660f1c5256d54fa3aca821cbd93bd2ec9e6eea7f"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2015:OM6FAPVJRYKEWRAEM45U3FEEQA","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Rational points on twisted K3 surfaces and derived equivalences","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["math.AG"],"primary_cat":"math.NT","authors_text":"Alexander Perry, Kenneth Ascher, Krishna Dasaratha, Rong Zhou","submitted_at":"2015-06-03T20:00:19Z","abstract_excerpt":"Using a construction of Hassett--V\\'arilly-Alvarado, we produce derived equivalent twisted K3 surfaces over $\\mathbb{Q}$, $\\mathbb{Q}_2$, and $\\mathbb{R}$, where one has a rational point and the other does not. This answers negatively a question recently raised by Hassett and Tschinkel."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1506.01374","kind":"arxiv","version":2},"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":"2026-05-18T01:10:45Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"aP0G5dEIpw9N819s3Mi48niZ2updGxMSPWAyJaTrhiOuaFmsNxdEUNplwBdJ4qohan68dIs9u8V74JXrBokYAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-31T18:50:38.749289Z"},"content_sha256":"05a852dd29d277c78d4c6f30788c3b85c8e2f9b301e96e1cb9780b8fd8ec9135","schema_version":"1.0","event_id":"sha256:05a852dd29d277c78d4c6f30788c3b85c8e2f9b301e96e1cb9780b8fd8ec9135"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/OM6FAPVJRYKEWRAEM45U3FEEQA/bundle.json","state_url":"https://pith.science/pith/OM6FAPVJRYKEWRAEM45U3FEEQA/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/OM6FAPVJRYKEWRAEM45U3FEEQA/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":"2026-05-31T18:50:38Z","links":{"resolver":"https://pith.science/pith/OM6FAPVJRYKEWRAEM45U3FEEQA","bundle":"https://pith.science/pith/OM6FAPVJRYKEWRAEM45U3FEEQA/bundle.json","state":"https://pith.science/pith/OM6FAPVJRYKEWRAEM45U3FEEQA/state.json","well_known_bundle":"https://pith.science/.well-known/pith/OM6FAPVJRYKEWRAEM45U3FEEQA/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:OM6FAPVJRYKEWRAEM45U3FEEQA","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":"061866655ef70f05980d52784d0035130a0a2a287799c6f7bf9c575e8a536375","cross_cats_sorted":["math.AG"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"math.NT","submitted_at":"2015-06-03T20:00:19Z","title_canon_sha256":"baad8ee9f4d39b0e4eb26c5b935dc6e2345e4382dbda9e330056ab25c94ee35c"},"schema_version":"1.0","source":{"id":"1506.01374","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1506.01374","created_at":"2026-05-18T01:10:45Z"},{"alias_kind":"arxiv_version","alias_value":"1506.01374v2","created_at":"2026-05-18T01:10:45Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1506.01374","created_at":"2026-05-18T01:10:45Z"},{"alias_kind":"pith_short_12","alias_value":"OM6FAPVJRYKE","created_at":"2026-05-18T12:29:34Z"},{"alias_kind":"pith_short_16","alias_value":"OM6FAPVJRYKEWRAE","created_at":"2026-05-18T12:29:34Z"},{"alias_kind":"pith_short_8","alias_value":"OM6FAPVJ","created_at":"2026-05-18T12:29:34Z"}],"graph_snapshots":[{"event_id":"sha256:05a852dd29d277c78d4c6f30788c3b85c8e2f9b301e96e1cb9780b8fd8ec9135","target":"graph","created_at":"2026-05-18T01:10:45Z","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":"Using a construction of Hassett--V\\'arilly-Alvarado, we produce derived equivalent twisted K3 surfaces over $\\mathbb{Q}$, $\\mathbb{Q}_2$, and $\\mathbb{R}$, where one has a rational point and the other does not. This answers negatively a question recently raised by Hassett and Tschinkel.","authors_text":"Alexander Perry, Kenneth Ascher, Krishna Dasaratha, Rong Zhou","cross_cats":["math.AG"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"math.NT","submitted_at":"2015-06-03T20:00:19Z","title":"Rational points on twisted K3 surfaces and derived equivalences"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1506.01374","kind":"arxiv","version":2},"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:c0a1c92a5f3da16316f22905660f1c5256d54fa3aca821cbd93bd2ec9e6eea7f","target":"record","created_at":"2026-05-18T01:10:45Z","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":"061866655ef70f05980d52784d0035130a0a2a287799c6f7bf9c575e8a536375","cross_cats_sorted":["math.AG"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"math.NT","submitted_at":"2015-06-03T20:00:19Z","title_canon_sha256":"baad8ee9f4d39b0e4eb26c5b935dc6e2345e4382dbda9e330056ab25c94ee35c"},"schema_version":"1.0","source":{"id":"1506.01374","kind":"arxiv","version":2}},"canonical_sha256":"733c503ea98e144b4404673b4d94848034da57251a34a39a217a79699ffc8dd6","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"733c503ea98e144b4404673b4d94848034da57251a34a39a217a79699ffc8dd6","first_computed_at":"2026-05-18T01:10:45.980845Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:10:45.980845Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"MFp6ShiP6D94TLL4pBZdDhDwiwnQUZJIfJWJuABx3uWtHkMyw/L8OVAs4PAFSxqC1fST9/Hho9fWvECgNHmcCQ==","signature_status":"signed_v1","signed_at":"2026-05-18T01:10:45.981394Z","signed_message":"canonical_sha256_bytes"},"source_id":"1506.01374","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:c0a1c92a5f3da16316f22905660f1c5256d54fa3aca821cbd93bd2ec9e6eea7f","sha256:05a852dd29d277c78d4c6f30788c3b85c8e2f9b301e96e1cb9780b8fd8ec9135"],"state_sha256":"8f8b08641a01318687afacb7757c360a1ed0ecde58e15a85150807e7938d7998"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"NPAkXWo/II94NQ12Uj26LjbdbJwPo8CFYmaGWRCM6R6leHgAQ7d7fupOl6SyKazg9/ch+OeeXzLOh/GOuRIRAQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-31T18:50:38.752304Z","bundle_sha256":"c3bd02f939ba9a0a5acfce8f7112d3245e6f375653dd6b6a2fee1ddfd31e2312"}}