{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2012:45ZHWCINRKWVZLRFXEH4HWBDZP","short_pith_number":"pith:45ZHWCIN","canonical_record":{"source":{"id":"1206.0791","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2012-06-04T23:28:57Z","cross_cats_sorted":["astro-ph.EP"],"title_canon_sha256":"3e9deb45a297f7d051bea713453477819a8e1425d2985587fe110740159e65d5","abstract_canon_sha256":"c7c309409f8ca8bf728736bf49ce423dd23acf24d41ffe4831c11b230f2ca8a8"},"schema_version":"1.0"},"canonical_sha256":"e7727b090d8aad5cae25b90fc3d823cbdf6a7f6f87eb32cfe951e8ce4703582b","source":{"kind":"arxiv","id":"1206.0791","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1206.0791","created_at":"2026-05-18T01:57:07Z"},{"alias_kind":"arxiv_version","alias_value":"1206.0791v1","created_at":"2026-05-18T01:57:07Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1206.0791","created_at":"2026-05-18T01:57:07Z"},{"alias_kind":"pith_short_12","alias_value":"45ZHWCINRKWV","created_at":"2026-05-18T12:26:53Z"},{"alias_kind":"pith_short_16","alias_value":"45ZHWCINRKWVZLRF","created_at":"2026-05-18T12:26:53Z"},{"alias_kind":"pith_short_8","alias_value":"45ZHWCIN","created_at":"2026-05-18T12:26:53Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2012:45ZHWCINRKWVZLRFXEH4HWBDZP","target":"record","payload":{"canonical_record":{"source":{"id":"1206.0791","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2012-06-04T23:28:57Z","cross_cats_sorted":["astro-ph.EP"],"title_canon_sha256":"3e9deb45a297f7d051bea713453477819a8e1425d2985587fe110740159e65d5","abstract_canon_sha256":"c7c309409f8ca8bf728736bf49ce423dd23acf24d41ffe4831c11b230f2ca8a8"},"schema_version":"1.0"},"canonical_sha256":"e7727b090d8aad5cae25b90fc3d823cbdf6a7f6f87eb32cfe951e8ce4703582b","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:57:07.813077Z","signature_b64":"Ak1m0MLzTC19HRCgBaeoAfkANWDYMzPGBQB+viKVelW9vt2OigkQ6R3+3/pwK05q88l7Ema3SttJ6qnlxzTUCA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"e7727b090d8aad5cae25b90fc3d823cbdf6a7f6f87eb32cfe951e8ce4703582b","last_reissued_at":"2026-05-18T01:57:07.812380Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:57:07.812380Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1206.0791","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":"2026-05-18T01:57:07Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"cJmFb2D2CoG3xgcSHrPpAKjS6F/efxdS5PRtd6118pyDWFnONNVMx8DbXPKTXzKofWLxokqEKCKiX0Auf/TzCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T23:15:21.188115Z"},"content_sha256":"daf4a63d2b3fad17117fef3fa5465e714c11b990ea361f09043e5e7e0d9980f9","schema_version":"1.0","event_id":"sha256:daf4a63d2b3fad17117fef3fa5465e714c11b990ea361f09043e5e7e0d9980f9"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2012:45ZHWCINRKWVZLRFXEH4HWBDZP","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Resource Letter: Gravitational Lensing","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.EP"],"primary_cat":"astro-ph.CO","authors_text":"D. Clowe (3) (UC Santa Barbara (1), Ohio University (3)), Oxford (2), P. J. Marshall (2), T. Treu (1)","submitted_at":"2012-06-04T23:28:57Z","abstract_excerpt":"This Resource Letter provides a guide to a selection of the literature on gravitational lensing and its applications. Journal articles, books, popular articles, and websites are cited for the following topics: foundations of gravitational lensing, foundations of cosmology, history of gravitational lensing, strong lensing, weak lensing, and microlensing."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1206.0791","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":"2026-05-18T01:57:07Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"4Sown4CF0P0dWb36zQ3VzVuHsWy8pP15aZN04m1x81pdn/Ki0DM6AYj0L09/mt9MahlqStToMVMUEpn4Vw7VBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T23:15:21.188766Z"},"content_sha256":"515cf7e66f25dac47cca9b8dd2a8f53bb64dfcf685d0929e376e4484b240b8f8","schema_version":"1.0","event_id":"sha256:515cf7e66f25dac47cca9b8dd2a8f53bb64dfcf685d0929e376e4484b240b8f8"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/45ZHWCINRKWVZLRFXEH4HWBDZP/bundle.json","state_url":"https://pith.science/pith/45ZHWCINRKWVZLRFXEH4HWBDZP/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/45ZHWCINRKWVZLRFXEH4HWBDZP/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":"2026-05-27T23:15:21Z","links":{"resolver":"https://pith.science/pith/45ZHWCINRKWVZLRFXEH4HWBDZP","bundle":"https://pith.science/pith/45ZHWCINRKWVZLRFXEH4HWBDZP/bundle.json","state":"https://pith.science/pith/45ZHWCINRKWVZLRFXEH4HWBDZP/state.json","well_known_bundle":"https://pith.science/.well-known/pith/45ZHWCINRKWVZLRFXEH4HWBDZP/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:45ZHWCINRKWVZLRFXEH4HWBDZP","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":"c7c309409f8ca8bf728736bf49ce423dd23acf24d41ffe4831c11b230f2ca8a8","cross_cats_sorted":["astro-ph.EP"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2012-06-04T23:28:57Z","title_canon_sha256":"3e9deb45a297f7d051bea713453477819a8e1425d2985587fe110740159e65d5"},"schema_version":"1.0","source":{"id":"1206.0791","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1206.0791","created_at":"2026-05-18T01:57:07Z"},{"alias_kind":"arxiv_version","alias_value":"1206.0791v1","created_at":"2026-05-18T01:57:07Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1206.0791","created_at":"2026-05-18T01:57:07Z"},{"alias_kind":"pith_short_12","alias_value":"45ZHWCINRKWV","created_at":"2026-05-18T12:26:53Z"},{"alias_kind":"pith_short_16","alias_value":"45ZHWCINRKWVZLRF","created_at":"2026-05-18T12:26:53Z"},{"alias_kind":"pith_short_8","alias_value":"45ZHWCIN","created_at":"2026-05-18T12:26:53Z"}],"graph_snapshots":[{"event_id":"sha256:515cf7e66f25dac47cca9b8dd2a8f53bb64dfcf685d0929e376e4484b240b8f8","target":"graph","created_at":"2026-05-18T01:57:07Z","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":"This Resource Letter provides a guide to a selection of the literature on gravitational lensing and its applications. Journal articles, books, popular articles, and websites are cited for the following topics: foundations of gravitational lensing, foundations of cosmology, history of gravitational lensing, strong lensing, weak lensing, and microlensing.","authors_text":"D. Clowe (3) (UC Santa Barbara (1), Ohio University (3)), Oxford (2), P. J. Marshall (2), T. Treu (1)","cross_cats":["astro-ph.EP"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2012-06-04T23:28:57Z","title":"Resource Letter: Gravitational Lensing"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1206.0791","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:daf4a63d2b3fad17117fef3fa5465e714c11b990ea361f09043e5e7e0d9980f9","target":"record","created_at":"2026-05-18T01:57:07Z","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":"c7c309409f8ca8bf728736bf49ce423dd23acf24d41ffe4831c11b230f2ca8a8","cross_cats_sorted":["astro-ph.EP"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2012-06-04T23:28:57Z","title_canon_sha256":"3e9deb45a297f7d051bea713453477819a8e1425d2985587fe110740159e65d5"},"schema_version":"1.0","source":{"id":"1206.0791","kind":"arxiv","version":1}},"canonical_sha256":"e7727b090d8aad5cae25b90fc3d823cbdf6a7f6f87eb32cfe951e8ce4703582b","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"e7727b090d8aad5cae25b90fc3d823cbdf6a7f6f87eb32cfe951e8ce4703582b","first_computed_at":"2026-05-18T01:57:07.812380Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:57:07.812380Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Ak1m0MLzTC19HRCgBaeoAfkANWDYMzPGBQB+viKVelW9vt2OigkQ6R3+3/pwK05q88l7Ema3SttJ6qnlxzTUCA==","signature_status":"signed_v1","signed_at":"2026-05-18T01:57:07.813077Z","signed_message":"canonical_sha256_bytes"},"source_id":"1206.0791","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:daf4a63d2b3fad17117fef3fa5465e714c11b990ea361f09043e5e7e0d9980f9","sha256:515cf7e66f25dac47cca9b8dd2a8f53bb64dfcf685d0929e376e4484b240b8f8"],"state_sha256":"59a3b70ec30b877673a70577c4440b2837e9d51801db19b619a494bef5a5331e"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"OxVw3CKxn7uqYxtURITlm7xX5FBLtNSUewekZYYfot4evPfFuQWVGtvmTJ4Vsu/gD8ckYdb/K2VDTw2XH8C4DQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-27T23:15:21.191607Z","bundle_sha256":"1924bc0abf6c921aad898929b71898d78eb5340d78ce4812227c515d863f7b05"}}