{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2026:6V5GWGHRGMYWN2G6QR4CIJ3PUZ","short_pith_number":"pith:6V5GWGHR","canonical_record":{"source":{"id":"2605.23724","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by-nc-sa/4.0/","primary_cat":"physics.ed-ph","submitted_at":"2026-05-22T15:04:15Z","cross_cats_sorted":["physics.optics"],"title_canon_sha256":"d453ad95bb26ae4d43190ac5ba7da6fb8802d42285f4ea48a9bc5ff6909825e6","abstract_canon_sha256":"02c0cec812c47172870fc2416114a3ac170f4f9aa102fc4b4b69bd49ca52361e"},"schema_version":"1.0"},"canonical_sha256":"f57a6b18f1333166e8de847824276fa641804c7a04faf2051684e67b4a34b4ac","source":{"kind":"arxiv","id":"2605.23724","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2605.23724","created_at":"2026-05-25T02:02:28Z"},{"alias_kind":"arxiv_version","alias_value":"2605.23724v1","created_at":"2026-05-25T02:02:28Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2605.23724","created_at":"2026-05-25T02:02:28Z"},{"alias_kind":"pith_short_12","alias_value":"6V5GWGHRGMYW","created_at":"2026-05-25T02:02:28Z"},{"alias_kind":"pith_short_16","alias_value":"6V5GWGHRGMYWN2G6","created_at":"2026-05-25T02:02:28Z"},{"alias_kind":"pith_short_8","alias_value":"6V5GWGHR","created_at":"2026-05-25T02:02:28Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2026:6V5GWGHRGMYWN2G6QR4CIJ3PUZ","target":"record","payload":{"canonical_record":{"source":{"id":"2605.23724","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by-nc-sa/4.0/","primary_cat":"physics.ed-ph","submitted_at":"2026-05-22T15:04:15Z","cross_cats_sorted":["physics.optics"],"title_canon_sha256":"d453ad95bb26ae4d43190ac5ba7da6fb8802d42285f4ea48a9bc5ff6909825e6","abstract_canon_sha256":"02c0cec812c47172870fc2416114a3ac170f4f9aa102fc4b4b69bd49ca52361e"},"schema_version":"1.0"},"canonical_sha256":"f57a6b18f1333166e8de847824276fa641804c7a04faf2051684e67b4a34b4ac","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-25T02:02:28.637534Z","signature_b64":"kSiKfqWVgp14INUccojmqQHLDDj5yqdwPidz36vRaNdFtl2C/AIFIoGQNxe9sVFF7H9vH1De0jG68RD7AbRMBQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"f57a6b18f1333166e8de847824276fa641804c7a04faf2051684e67b4a34b4ac","last_reissued_at":"2026-05-25T02:02:28.635612Z","signature_status":"signed_v1","first_computed_at":"2026-05-25T02:02:28.635612Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2605.23724","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":"2026-05-25T02:02:28Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"LM7pjf8aIpxYHxIPjCuAISEZQBBqyTlhKqPIW45T6C8ZJgz6rgJVVYSKg3h9woPbhir7kfxp5ZEhPHfuM5S8Bg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-02T14:04:26.399372Z"},"content_sha256":"8796d09e0432f64d4ac29d277cf1d6b101c5cb4b4e0a90f8fefeb54ea621f971","schema_version":"1.0","event_id":"sha256:8796d09e0432f64d4ac29d277cf1d6b101c5cb4b4e0a90f8fefeb54ea621f971"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2026:6V5GWGHRGMYWN2G6QR4CIJ3PUZ","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Democratising Optical Orbital Angular Momentum: a Set of Cost-Effective Tools","license":"http://creativecommons.org/licenses/by-nc-sa/4.0/","headline":"","cross_cats":["physics.optics"],"primary_cat":"physics.ed-ph","authors_text":"Ananya Kudaloor, Carrie Weidner, Edmund Harbord, Lok Kan Wan, Lyuxuan Chen, Muskan Tuli, Natasha Bierrum, Petros Androvitsaneas, Richard Taylor, Shupeng Yang, Xiwen Dong, Yancen Hou","submitted_at":"2026-05-22T15:04:15Z","abstract_excerpt":"Classical and quantum optical communication has gained popularity and momentum in recent years, with growing investment and innovation in quantum technologies. However, the main teaching method in the education of quantum mechanics include mathematically intensive derivations or abstract analogies for the complex systems. We propose a \"poor man's\" spatial light modulator experiment that is an engaging and interactive learning aid for teaching quantum mechanics and optical orbital angular momentum. Fork diffraction gratings were created on photographic slide film by outsourcing to an external c"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2605.23724","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/2605.23724/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":"2026-05-25T02:02:28Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"h4PIso9+nHUbLSSHJKwcQvnTVKkFtQCq8y212QW5NS0WVKY8MPmS7S7RrvRi6Jh4625ZPG5uy480Gh5WjkSwCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-02T14:04:26.399768Z"},"content_sha256":"70331d6a635af69fd42ef5ec05e06f6a70e8140a1c995fdf8360216c561f453f","schema_version":"1.0","event_id":"sha256:70331d6a635af69fd42ef5ec05e06f6a70e8140a1c995fdf8360216c561f453f"},{"event_type":"integrity_finding","subject_pith_number":"pith:2026:6V5GWGHRGMYWN2G6QR4CIJ3PUZ","target":"integrity","payload":{"note":"URL 'https://www.digitalslides.co.uk/product-' returned status 404 (Not Found) at last check.","snippet":null,"arxiv_id":"2605.23724","detector":"external_links","evidence":{"url":"https://www.digitalslides.co.uk/product-","final_url":"https://www.digitalslides.co.uk/product-/?q=%2Fproduct-&v=7885444af42e","host_kind":"website","status_code":404,"status_text":"Not Found","verdict_class":"incontrovertible","checked_at_unix":1779752125.11995},"severity":"advisory","ref_index":null,"audited_at":"2026-05-25T23:35:30.894724Z","event_type":"pith.integrity.v1","detected_doi":null,"detector_url":"https://pith.science/pith-integrity-protocol#external_links","external_url":"https://www.digitalslides.co.uk/product-","finding_type":"dead_url","evidence_hash":"50f06be2d8d9bb4cef0f77d3d94a2fb0819a21f927c9714ca116a3a4417805df","paper_version":1,"verdict_class":"incontrovertible","resolved_title":null,"detector_version":"1.0.0","detected_arxiv_id":null,"integrity_event_id":7709,"payload_sha256":"cb730b57dcbd42ea4fea86f8654e72fa0bc80850d84dfd894b7291b18fca970b","signature_b64":"3pQpoBmERGCapZIqsiLEYqWv5mynFmIhU3lBMBp9zGtw/qlmS5y4WgbI5mkFEkKrxO3dFNjJMVHhw5x+fKM6Dw==","signing_key_id":"pith-v1-2026-05"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-25T23:35:51Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"LswTxgao7gciz76RYBlWkNbw468VJYBu61z84ERi88D5LtN8XML9KDEPgMl5u5PCjiz93vcqWQOGuwrTzna4DQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-02T14:04:26.400799Z"},"content_sha256":"2b9ae490b1ae840f02181ce7bb17fcc937f46d5d9f54c26d8d1491e27961bce5","schema_version":"1.0","event_id":"sha256:2b9ae490b1ae840f02181ce7bb17fcc937f46d5d9f54c26d8d1491e27961bce5"},{"event_type":"integrity_finding","subject_pith_number":"pith:2026:6V5GWGHRGMYWN2G6QR4CIJ3PUZ","target":"integrity","payload":{"note":"URL 'https://www.digitalslides.co.uk/product-' returned status 404 (Not Found) at last check.","snippet":null,"arxiv_id":"2605.23724","detector":"external_links","evidence":{"url":"https://www.digitalslides.co.uk/product-","final_url":"https://www.digitalslides.co.uk/product-/?q=%2Fproduct-&v=7885444af42e","host_kind":"website","status_code":404,"status_text":"Not Found","verdict_class":"incontrovertible","checked_at_unix":1779708937.8039947},"severity":"advisory","ref_index":null,"audited_at":"2026-05-25T11:35:44.049345Z","event_type":"pith.integrity.v1","detected_doi":null,"detector_url":"https://pith.science/pith-integrity-protocol#external_links","external_url":"https://www.digitalslides.co.uk/product-","finding_type":"dead_url","evidence_hash":"16ac2f78cd0e38550fb52fd30d8a9c8426795c300dd433dbe29352bc57b16231","paper_version":1,"verdict_class":"incontrovertible","resolved_title":null,"detector_version":"1.0.0","detected_arxiv_id":null,"integrity_event_id":7575,"payload_sha256":"3f12a0ed1fd4cd4509dbeb427c6dfd7b3366f2e4b44fd6eb9b9f9c2268d346fa","signature_b64":"ZKxszOhPjB2otGQKPxgVcRFviIwLALYABaVtqRAWB8QD94gQ40x5LM1+a+Wz+6gJTlO8DNqGV2ES38RZgl3WAw==","signing_key_id":"pith-v1-2026-05"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-25T11:40:12Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"MOfY+1vOQmHc48RldIYr9U4AY6qfQJ5PbiIw/wvBpA4C0pJ6NLpCc2lTeWNsq842AReGdS0NXxFHC6YMWFLyCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-02T14:04:26.401086Z"},"content_sha256":"631781794982dbfc9a6724878ae4b91c2d743e71e7ac2898be9e8b07d7db6ff5","schema_version":"1.0","event_id":"sha256:631781794982dbfc9a6724878ae4b91c2d743e71e7ac2898be9e8b07d7db6ff5"},{"event_type":"integrity_finding","subject_pith_number":"pith:2026:6V5GWGHRGMYWN2G6QR4CIJ3PUZ","target":"integrity","payload":{"note":"DOI in the printed bibliography is fragmented by whitespace or line breaks. A longer candidate (10.1016/0030-4018(94) was visible in the surrounding text but could not be confirmed against doi.org as printed.","snippet":"M. W. Beijersbergen, R. P. C. Coerwinkel, M. Kristensen, and J. P. Woerdman, “Helical-wavefront laser beams produced with a spiral phaseplate,”Optics Commu- nications, vol. 112, no. 5, pp. 321–327, 1994,issn: 0030-4018.doi:10.1016/0030- 401","arxiv_id":"2605.23724","detector":"doi_compliance","evidence":{"ref_index":19,"verdict_class":"incontrovertible","resolved_title":null,"printed_excerpt":"M. W. Beijersbergen, R. P. C. Coerwinkel, M. Kristensen, and J. P. Woerdman, “Helical-wavefront laser beams produced with a spiral phaseplate,”Optics Commu- nications, vol. 112, no. 5, pp. 321–327, 1994,issn: 0030-4018.doi:10.1016/0030- 401","reconstructed_doi":"10.1016/0030-4018(94"},"severity":"advisory","ref_index":19,"audited_at":"2026-05-25T02:26:06.520388Z","event_type":"pith.integrity.v1","detected_doi":"10.1016/0030-4018(94","detector_url":"https://pith.science/pith-integrity-protocol#doi_compliance","external_url":null,"finding_type":"recoverable_identifier","evidence_hash":"4b00f5828fc256f4214ef50c81f785f83c5d02e89eb7e886142c09486cffa246","paper_version":1,"verdict_class":"incontrovertible","resolved_title":null,"detector_version":"1.0.0","detected_arxiv_id":null,"integrity_event_id":7255,"payload_sha256":"5e9d6d2100c10c384d23553d21e6ad8a5a294d08a7a5424112855925d03bc1d3","signature_b64":"yzPWRuOwwAA6GZl22oheD67ZZWIIOWR+PC4SLSj0KTU3bSmbu6PRFrof76vlJYXb/qpCdD2nCVtmATDVFelUBg==","signing_key_id":"pith-v1-2026-05"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-25T02:29:44Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"9Di2aDTIjZ3K5qsMZ4jSOASyASUAhzazMko5PhRIJoPsZuJwQGhrmKhpB3qFv05CI4z+pu5S335adgXKD5HNBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-02T14:04:26.401418Z"},"content_sha256":"814bbbab976bd13c9eb84d8220b37b16bb3ff8ef04e287742c67226ba9e181f5","schema_version":"1.0","event_id":"sha256:814bbbab976bd13c9eb84d8220b37b16bb3ff8ef04e287742c67226ba9e181f5"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/6V5GWGHRGMYWN2G6QR4CIJ3PUZ/bundle.json","state_url":"https://pith.science/pith/6V5GWGHRGMYWN2G6QR4CIJ3PUZ/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/6V5GWGHRGMYWN2G6QR4CIJ3PUZ/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":"2026-06-02T14:04:26Z","links":{"resolver":"https://pith.science/pith/6V5GWGHRGMYWN2G6QR4CIJ3PUZ","bundle":"https://pith.science/pith/6V5GWGHRGMYWN2G6QR4CIJ3PUZ/bundle.json","state":"https://pith.science/pith/6V5GWGHRGMYWN2G6QR4CIJ3PUZ/state.json","well_known_bundle":"https://pith.science/.well-known/pith/6V5GWGHRGMYWN2G6QR4CIJ3PUZ/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2026:6V5GWGHRGMYWN2G6QR4CIJ3PUZ","merge_version":"pith-open-graph-merge-v1","event_count":5,"valid_event_count":5,"invalid_event_count":0,"equivocation_count":1,"current":{"canonical_record":{"metadata":{"abstract_canon_sha256":"02c0cec812c47172870fc2416114a3ac170f4f9aa102fc4b4b69bd49ca52361e","cross_cats_sorted":["physics.optics"],"license":"http://creativecommons.org/licenses/by-nc-sa/4.0/","primary_cat":"physics.ed-ph","submitted_at":"2026-05-22T15:04:15Z","title_canon_sha256":"d453ad95bb26ae4d43190ac5ba7da6fb8802d42285f4ea48a9bc5ff6909825e6"},"schema_version":"1.0","source":{"id":"2605.23724","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2605.23724","created_at":"2026-05-25T02:02:28Z"},{"alias_kind":"arxiv_version","alias_value":"2605.23724v1","created_at":"2026-05-25T02:02:28Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2605.23724","created_at":"2026-05-25T02:02:28Z"},{"alias_kind":"pith_short_12","alias_value":"6V5GWGHRGMYW","created_at":"2026-05-25T02:02:28Z"},{"alias_kind":"pith_short_16","alias_value":"6V5GWGHRGMYWN2G6","created_at":"2026-05-25T02:02:28Z"},{"alias_kind":"pith_short_8","alias_value":"6V5GWGHR","created_at":"2026-05-25T02:02:28Z"}],"graph_snapshots":[{"event_id":"sha256:70331d6a635af69fd42ef5ec05e06f6a70e8140a1c995fdf8360216c561f453f","target":"graph","created_at":"2026-05-25T02:02:28Z","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/2605.23724/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Classical and quantum optical communication has gained popularity and momentum in recent years, with growing investment and innovation in quantum technologies. However, the main teaching method in the education of quantum mechanics include mathematically intensive derivations or abstract analogies for the complex systems. We propose a \"poor man's\" spatial light modulator experiment that is an engaging and interactive learning aid for teaching quantum mechanics and optical orbital angular momentum. Fork diffraction gratings were created on photographic slide film by outsourcing to an external c","authors_text":"Ananya Kudaloor, Carrie Weidner, Edmund Harbord, Lok Kan Wan, Lyuxuan Chen, Muskan Tuli, Natasha Bierrum, Petros Androvitsaneas, Richard Taylor, Shupeng Yang, Xiwen Dong, Yancen Hou","cross_cats":["physics.optics"],"headline":"","license":"http://creativecommons.org/licenses/by-nc-sa/4.0/","primary_cat":"physics.ed-ph","submitted_at":"2026-05-22T15:04:15Z","title":"Democratising Optical Orbital Angular Momentum: a Set of Cost-Effective Tools"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2605.23724","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":"sha256:8796d09e0432f64d4ac29d277cf1d6b101c5cb4b4e0a90f8fefeb54ea621f971","target":"record","created_at":"2026-05-25T02:02:28Z","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":"02c0cec812c47172870fc2416114a3ac170f4f9aa102fc4b4b69bd49ca52361e","cross_cats_sorted":["physics.optics"],"license":"http://creativecommons.org/licenses/by-nc-sa/4.0/","primary_cat":"physics.ed-ph","submitted_at":"2026-05-22T15:04:15Z","title_canon_sha256":"d453ad95bb26ae4d43190ac5ba7da6fb8802d42285f4ea48a9bc5ff6909825e6"},"schema_version":"1.0","source":{"id":"2605.23724","kind":"arxiv","version":1}},"canonical_sha256":"f57a6b18f1333166e8de847824276fa641804c7a04faf2051684e67b4a34b4ac","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"f57a6b18f1333166e8de847824276fa641804c7a04faf2051684e67b4a34b4ac","first_computed_at":"2026-05-25T02:02:28.635612Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-25T02:02:28.635612Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"kSiKfqWVgp14INUccojmqQHLDDj5yqdwPidz36vRaNdFtl2C/AIFIoGQNxe9sVFF7H9vH1De0jG68RD7AbRMBQ==","signature_status":"signed_v1","signed_at":"2026-05-25T02:02:28.637534Z","signed_message":"canonical_sha256_bytes"},"source_id":"2605.23724","source_kind":"arxiv","source_version":1}}},"equivocations":[{"signer_id":"pith.science","event_type":"integrity_finding","target":"integrity","event_ids":["sha256:2b9ae490b1ae840f02181ce7bb17fcc937f46d5d9f54c26d8d1491e27961bce5","sha256:631781794982dbfc9a6724878ae4b91c2d743e71e7ac2898be9e8b07d7db6ff5","sha256:814bbbab976bd13c9eb84d8220b37b16bb3ff8ef04e287742c67226ba9e181f5"]}],"invalid_events":[],"applied_event_ids":["sha256:8796d09e0432f64d4ac29d277cf1d6b101c5cb4b4e0a90f8fefeb54ea621f971","sha256:70331d6a635af69fd42ef5ec05e06f6a70e8140a1c995fdf8360216c561f453f"],"state_sha256":"e7a92b5f40cef2e34bc908e289c84ffbf01067afd9b36f974413cab64496af00"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"DVKjVPfBs6KPGgyvtPZ6UWgUT7whiBcmf4Y3K47A0bFzJ1xENZmhjsDePLLOgszyg5UP8tG7ZNV8e0GZV/0gCg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-02T14:04:26.404365Z","bundle_sha256":"f16093138a72fd0bf52124b74a11b0c95f5e680c6ef1c9fadc8185773c98b0c6"}}