{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2016:Q7OZ42G7K37LGIZBP3HSPMBOWL","short_pith_number":"pith:Q7OZ42G7","canonical_record":{"source":{"id":"1604.08472","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"math.HO","submitted_at":"2016-04-28T15:39:47Z","cross_cats_sorted":["cs.CY","math.NA","math.NT"],"title_canon_sha256":"ac1a8092f8bac193eb6464338f1d558e2a69ebdeace4e698ba4e78b2a1d6aa44","abstract_canon_sha256":"7f84b1c0a6a987043d36e1a73fb3bbc28317aa7b492cc5208a7f4aaa42a58631"},"schema_version":"1.0"},"canonical_sha256":"87dd9e68df56feb323217ecf27b02eb2dff62e771f2a7c73ef32a44db6a0d4cf","source":{"kind":"arxiv","id":"1604.08472","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1604.08472","created_at":"2026-05-18T01:16:03Z"},{"alias_kind":"arxiv_version","alias_value":"1604.08472v1","created_at":"2026-05-18T01:16:03Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1604.08472","created_at":"2026-05-18T01:16:03Z"},{"alias_kind":"pith_short_12","alias_value":"Q7OZ42G7K37L","created_at":"2026-05-18T12:30:39Z"},{"alias_kind":"pith_short_16","alias_value":"Q7OZ42G7K37LGIZB","created_at":"2026-05-18T12:30:39Z"},{"alias_kind":"pith_short_8","alias_value":"Q7OZ42G7","created_at":"2026-05-18T12:30:39Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2016:Q7OZ42G7K37LGIZBP3HSPMBOWL","target":"record","payload":{"canonical_record":{"source":{"id":"1604.08472","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"math.HO","submitted_at":"2016-04-28T15:39:47Z","cross_cats_sorted":["cs.CY","math.NA","math.NT"],"title_canon_sha256":"ac1a8092f8bac193eb6464338f1d558e2a69ebdeace4e698ba4e78b2a1d6aa44","abstract_canon_sha256":"7f84b1c0a6a987043d36e1a73fb3bbc28317aa7b492cc5208a7f4aaa42a58631"},"schema_version":"1.0"},"canonical_sha256":"87dd9e68df56feb323217ecf27b02eb2dff62e771f2a7c73ef32a44db6a0d4cf","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:16:03.878877Z","signature_b64":"Ya+LpdJgMRSWF9n/lYFUxxFrzSVl6HMuVcy8lOz/9M5v6oAjAcUl4rrSXhP4R4xv02KeIyiskWeOHI/wvDUFAA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"87dd9e68df56feb323217ecf27b02eb2dff62e771f2a7c73ef32a44db6a0d4cf","last_reissued_at":"2026-05-18T01:16:03.878153Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:16:03.878153Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1604.08472","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":"2026-05-18T01:16:03Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"FJPRteXuVzMmQq6YicJ60sCjL/B53iRAli9yS6Wxo3BqAwwthorAMJdSYsAWX0V9DCQA1YA/Ql8zeVffd9R7AA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-01T11:35:50.143866Z"},"content_sha256":"52fb17910fcf5ae39c90e06a9353ed1d9814f652292f7b153f8b1a26d9dc962a","schema_version":"1.0","event_id":"sha256:52fb17910fcf5ae39c90e06a9353ed1d9814f652292f7b153f8b1a26d9dc962a"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2016:Q7OZ42G7K37LGIZBP3HSPMBOWL","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Beyond the black box","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cs.CY","math.NA","math.NT"],"primary_cat":"math.HO","authors_text":"Jeroen Demeyer, Ursula Whitcher, William Stein","submitted_at":"2016-04-28T15:39:47Z","abstract_excerpt":"We describe the role the open-source software community plays in fixing bugs through a case study of a problem with integer determinant computations in SageMath."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1604.08472","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":"2026-05-18T01:16:03Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"GZHaRzhlZs8edYgIqZUJzFmWjvziPMX9fUE5BqV/vl8aIhf6QMGyULPwab3yPB/UzK5gJlBCrTLYZXc7dhVwCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-01T11:35:50.144222Z"},"content_sha256":"ecaaf0a179b42640b81464afc091b3a7159c3d7e7175ad057873eab63a96659f","schema_version":"1.0","event_id":"sha256:ecaaf0a179b42640b81464afc091b3a7159c3d7e7175ad057873eab63a96659f"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/Q7OZ42G7K37LGIZBP3HSPMBOWL/bundle.json","state_url":"https://pith.science/pith/Q7OZ42G7K37LGIZBP3HSPMBOWL/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/Q7OZ42G7K37LGIZBP3HSPMBOWL/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":"2026-06-01T11:35:50Z","links":{"resolver":"https://pith.science/pith/Q7OZ42G7K37LGIZBP3HSPMBOWL","bundle":"https://pith.science/pith/Q7OZ42G7K37LGIZBP3HSPMBOWL/bundle.json","state":"https://pith.science/pith/Q7OZ42G7K37LGIZBP3HSPMBOWL/state.json","well_known_bundle":"https://pith.science/.well-known/pith/Q7OZ42G7K37LGIZBP3HSPMBOWL/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:Q7OZ42G7K37LGIZBP3HSPMBOWL","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":"7f84b1c0a6a987043d36e1a73fb3bbc28317aa7b492cc5208a7f4aaa42a58631","cross_cats_sorted":["cs.CY","math.NA","math.NT"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"math.HO","submitted_at":"2016-04-28T15:39:47Z","title_canon_sha256":"ac1a8092f8bac193eb6464338f1d558e2a69ebdeace4e698ba4e78b2a1d6aa44"},"schema_version":"1.0","source":{"id":"1604.08472","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1604.08472","created_at":"2026-05-18T01:16:03Z"},{"alias_kind":"arxiv_version","alias_value":"1604.08472v1","created_at":"2026-05-18T01:16:03Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1604.08472","created_at":"2026-05-18T01:16:03Z"},{"alias_kind":"pith_short_12","alias_value":"Q7OZ42G7K37L","created_at":"2026-05-18T12:30:39Z"},{"alias_kind":"pith_short_16","alias_value":"Q7OZ42G7K37LGIZB","created_at":"2026-05-18T12:30:39Z"},{"alias_kind":"pith_short_8","alias_value":"Q7OZ42G7","created_at":"2026-05-18T12:30:39Z"}],"graph_snapshots":[{"event_id":"sha256:ecaaf0a179b42640b81464afc091b3a7159c3d7e7175ad057873eab63a96659f","target":"graph","created_at":"2026-05-18T01:16:03Z","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 describe the role the open-source software community plays in fixing bugs through a case study of a problem with integer determinant computations in SageMath.","authors_text":"Jeroen Demeyer, Ursula Whitcher, William Stein","cross_cats":["cs.CY","math.NA","math.NT"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"math.HO","submitted_at":"2016-04-28T15:39:47Z","title":"Beyond the black box"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1604.08472","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":"sha256:52fb17910fcf5ae39c90e06a9353ed1d9814f652292f7b153f8b1a26d9dc962a","target":"record","created_at":"2026-05-18T01:16:03Z","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":"7f84b1c0a6a987043d36e1a73fb3bbc28317aa7b492cc5208a7f4aaa42a58631","cross_cats_sorted":["cs.CY","math.NA","math.NT"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"math.HO","submitted_at":"2016-04-28T15:39:47Z","title_canon_sha256":"ac1a8092f8bac193eb6464338f1d558e2a69ebdeace4e698ba4e78b2a1d6aa44"},"schema_version":"1.0","source":{"id":"1604.08472","kind":"arxiv","version":1}},"canonical_sha256":"87dd9e68df56feb323217ecf27b02eb2dff62e771f2a7c73ef32a44db6a0d4cf","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"87dd9e68df56feb323217ecf27b02eb2dff62e771f2a7c73ef32a44db6a0d4cf","first_computed_at":"2026-05-18T01:16:03.878153Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:16:03.878153Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Ya+LpdJgMRSWF9n/lYFUxxFrzSVl6HMuVcy8lOz/9M5v6oAjAcUl4rrSXhP4R4xv02KeIyiskWeOHI/wvDUFAA==","signature_status":"signed_v1","signed_at":"2026-05-18T01:16:03.878877Z","signed_message":"canonical_sha256_bytes"},"source_id":"1604.08472","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:52fb17910fcf5ae39c90e06a9353ed1d9814f652292f7b153f8b1a26d9dc962a","sha256:ecaaf0a179b42640b81464afc091b3a7159c3d7e7175ad057873eab63a96659f"],"state_sha256":"f74ca91cf6d26a16a188ce13ebc9275e53cd5c2ee3146567f6750f2110b1ea50"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"du7BQDH1S8w2vR3oI7TjQn8TESSXD1xfDnYsDIqUXel5IoqsnoZ2luzV6v7X7bOozdcdjeZs8/EB+E6wPw2lAA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-01T11:35:50.146235Z","bundle_sha256":"a22391caff5e8e3efc5bb75877a31aab56dc6767046fbdf87808a3c1b1d79026"}}