{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2026:B3LWFAJBK3BLOSGSML55263O4Q","short_pith_number":"pith:B3LWFAJB","canonical_record":{"source":{"id":"2605.21887","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2026-05-21T01:46:46Z","cross_cats_sorted":["physics.ed-ph"],"title_canon_sha256":"35d9237dbbc2dc9b4c3f4de7031b81ac250c42aca939b122c888d2451cb27d43","abstract_canon_sha256":"a850d384a1a2ad3d9b92cb0054f4853b8d1b2acb78e97dd6de73ff8e4d93df1d"},"schema_version":"1.0"},"canonical_sha256":"0ed762812156c2b748d262fbdd7b6ee421359821efa9b9df02afab5b3ed02c40","source":{"kind":"arxiv","id":"2605.21887","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2605.21887","created_at":"2026-05-22T01:04:13Z"},{"alias_kind":"arxiv_version","alias_value":"2605.21887v1","created_at":"2026-05-22T01:04:13Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2605.21887","created_at":"2026-05-22T01:04:13Z"},{"alias_kind":"pith_short_12","alias_value":"B3LWFAJBK3BL","created_at":"2026-05-22T01:04:13Z"},{"alias_kind":"pith_short_16","alias_value":"B3LWFAJBK3BLOSGS","created_at":"2026-05-22T01:04:13Z"},{"alias_kind":"pith_short_8","alias_value":"B3LWFAJB","created_at":"2026-05-22T01:04:13Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2026:B3LWFAJBK3BLOSGSML55263O4Q","target":"record","payload":{"canonical_record":{"source":{"id":"2605.21887","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2026-05-21T01:46:46Z","cross_cats_sorted":["physics.ed-ph"],"title_canon_sha256":"35d9237dbbc2dc9b4c3f4de7031b81ac250c42aca939b122c888d2451cb27d43","abstract_canon_sha256":"a850d384a1a2ad3d9b92cb0054f4853b8d1b2acb78e97dd6de73ff8e4d93df1d"},"schema_version":"1.0"},"canonical_sha256":"0ed762812156c2b748d262fbdd7b6ee421359821efa9b9df02afab5b3ed02c40","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-22T01:04:13.091508Z","signature_b64":"wYhzAs/nBz7nf/41/Vs7DOwUs/3qGTGPaq1TRV8wcDUNezYzkJqJeZxU2U3v7jfaBPIC06szjIVgqk7HNWkkAA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"0ed762812156c2b748d262fbdd7b6ee421359821efa9b9df02afab5b3ed02c40","last_reissued_at":"2026-05-22T01:04:13.090827Z","signature_status":"signed_v1","first_computed_at":"2026-05-22T01:04:13.090827Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2605.21887","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":"2026-05-22T01:04:13Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"dBoxAhpHvvbpKNXjcQGtQRLyTFH/755Y/QEL8wago2U5smXqXdY6n6eq/wwlrJ/U+lEMaq5+BIPhiedGZZsPDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T22:17:05.721218Z"},"content_sha256":"a5c0f5dfef0fdc6d104a3cd3932f85cfffa85c422528ef538208d7d0549f69ff","schema_version":"1.0","event_id":"sha256:a5c0f5dfef0fdc6d104a3cd3932f85cfffa85c422528ef538208d7d0549f69ff"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2026:B3LWFAJBK3BLOSGSML55263O4Q","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Quantitative Black Hole Imaging Laboratory with the Black Hole Vision App: I. Schwarzschild Spacetime","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["physics.ed-ph"],"primary_cat":"gr-qc","authors_text":"Lior M. Burko","submitted_at":"2026-05-21T01:46:46Z","abstract_excerpt":"This paper utilizes the {\\it Black Hole Vision} smartphone application to catalyze a pedagogical shift in General Relativity education through the quantitative analysis of simulated black hole imaging. Presented here for the Schwarzschild spacetime, the investigation is designed with a hierarchical modularity suitable for undergraduate students, with an expanded version intended for graduate courses in General Relativity or Relativistic Astrophysics. By transforming the mobile device into an educational relativistic imaging tool, we triangulate the simulated Schwarzschild mass through independ"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2605.21887","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2605.21887/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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":"2026-05-22T01:04:13Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Hx7qRNpdqY90rbiyUV5f5IEieUUlksFitPluJC2mhGo8XxJBtFKwhew7ut2zU7hiBKCXvSOwCS1vZ3OyVQOnAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T22:17:05.721997Z"},"content_sha256":"8a16868fc2574a0e678e1a6e167163655f32db1a77634f7acfc8d5d1ba48a8cc","schema_version":"1.0","event_id":"sha256:8a16868fc2574a0e678e1a6e167163655f32db1a77634f7acfc8d5d1ba48a8cc"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/B3LWFAJBK3BLOSGSML55263O4Q/bundle.json","state_url":"https://pith.science/pith/B3LWFAJBK3BLOSGSML55263O4Q/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/B3LWFAJBK3BLOSGSML55263O4Q/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":"2026-05-25T22:17:05Z","links":{"resolver":"https://pith.science/pith/B3LWFAJBK3BLOSGSML55263O4Q","bundle":"https://pith.science/pith/B3LWFAJBK3BLOSGSML55263O4Q/bundle.json","state":"https://pith.science/pith/B3LWFAJBK3BLOSGSML55263O4Q/state.json","well_known_bundle":"https://pith.science/.well-known/pith/B3LWFAJBK3BLOSGSML55263O4Q/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2026:B3LWFAJBK3BLOSGSML55263O4Q","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":"a850d384a1a2ad3d9b92cb0054f4853b8d1b2acb78e97dd6de73ff8e4d93df1d","cross_cats_sorted":["physics.ed-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2026-05-21T01:46:46Z","title_canon_sha256":"35d9237dbbc2dc9b4c3f4de7031b81ac250c42aca939b122c888d2451cb27d43"},"schema_version":"1.0","source":{"id":"2605.21887","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2605.21887","created_at":"2026-05-22T01:04:13Z"},{"alias_kind":"arxiv_version","alias_value":"2605.21887v1","created_at":"2026-05-22T01:04:13Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2605.21887","created_at":"2026-05-22T01:04:13Z"},{"alias_kind":"pith_short_12","alias_value":"B3LWFAJBK3BL","created_at":"2026-05-22T01:04:13Z"},{"alias_kind":"pith_short_16","alias_value":"B3LWFAJBK3BLOSGS","created_at":"2026-05-22T01:04:13Z"},{"alias_kind":"pith_short_8","alias_value":"B3LWFAJB","created_at":"2026-05-22T01:04:13Z"}],"graph_snapshots":[{"event_id":"sha256:8a16868fc2574a0e678e1a6e167163655f32db1a77634f7acfc8d5d1ba48a8cc","target":"graph","created_at":"2026-05-22T01:04:13Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/2605.21887/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"This paper utilizes the {\\it Black Hole Vision} smartphone application to catalyze a pedagogical shift in General Relativity education through the quantitative analysis of simulated black hole imaging. Presented here for the Schwarzschild spacetime, the investigation is designed with a hierarchical modularity suitable for undergraduate students, with an expanded version intended for graduate courses in General Relativity or Relativistic Astrophysics. By transforming the mobile device into an educational relativistic imaging tool, we triangulate the simulated Schwarzschild mass through independ","authors_text":"Lior M. Burko","cross_cats":["physics.ed-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2026-05-21T01:46:46Z","title":"Quantitative Black Hole Imaging Laboratory with the Black Hole Vision App: I. Schwarzschild Spacetime"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2605.21887","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:a5c0f5dfef0fdc6d104a3cd3932f85cfffa85c422528ef538208d7d0549f69ff","target":"record","created_at":"2026-05-22T01:04:13Z","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":"a850d384a1a2ad3d9b92cb0054f4853b8d1b2acb78e97dd6de73ff8e4d93df1d","cross_cats_sorted":["physics.ed-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2026-05-21T01:46:46Z","title_canon_sha256":"35d9237dbbc2dc9b4c3f4de7031b81ac250c42aca939b122c888d2451cb27d43"},"schema_version":"1.0","source":{"id":"2605.21887","kind":"arxiv","version":1}},"canonical_sha256":"0ed762812156c2b748d262fbdd7b6ee421359821efa9b9df02afab5b3ed02c40","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"0ed762812156c2b748d262fbdd7b6ee421359821efa9b9df02afab5b3ed02c40","first_computed_at":"2026-05-22T01:04:13.090827Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-22T01:04:13.090827Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"wYhzAs/nBz7nf/41/Vs7DOwUs/3qGTGPaq1TRV8wcDUNezYzkJqJeZxU2U3v7jfaBPIC06szjIVgqk7HNWkkAA==","signature_status":"signed_v1","signed_at":"2026-05-22T01:04:13.091508Z","signed_message":"canonical_sha256_bytes"},"source_id":"2605.21887","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:a5c0f5dfef0fdc6d104a3cd3932f85cfffa85c422528ef538208d7d0549f69ff","sha256:8a16868fc2574a0e678e1a6e167163655f32db1a77634f7acfc8d5d1ba48a8cc"],"state_sha256":"441756c0a46e8a5e553f9baba7a8b162b61a4b44c8d41081c5ba22b8ba48a379"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"PDLHT8g8LYB6oCldqiJxCGugEhV9kc8pTH75NLkF06dC1QMYfWAlYNvvkMlAHqFOaOvM6f3XxoCvBy/T5b/hAA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-25T22:17:05.726129Z","bundle_sha256":"bd68a987b6f8a479fdd303bbb61ef4d49f85bef89a2ac8711a15318a0b704def"}}