{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2021:RTJECH2SWRGI4U2W3EDGLUM6RK","short_pith_number":"pith:RTJECH2S","canonical_record":{"source":{"id":"2103.13415","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2021-03-24T18:02:11Z","cross_cats_sorted":["cs.GR"],"title_canon_sha256":"254a048cd654713af346d3ba9182062931da17da0f9ccf253f5234bdf7583dda","abstract_canon_sha256":"f036f17f843c40a77857bb34dfd8f33eb20bbf51b6df3b6e1ba1f3915ed0503d"},"schema_version":"1.0"},"canonical_sha256":"8cd2411f52b44c8e5356d90665d19e8ab6d944113e83e958f46a97d00aa5fe9c","source":{"kind":"arxiv","id":"2103.13415","version":3},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2103.13415","created_at":"2026-07-05T03:05:48Z"},{"alias_kind":"arxiv_version","alias_value":"2103.13415v3","created_at":"2026-07-05T03:05:48Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2103.13415","created_at":"2026-07-05T03:05:48Z"},{"alias_kind":"pith_short_12","alias_value":"RTJECH2SWRGI","created_at":"2026-07-05T03:05:48Z"},{"alias_kind":"pith_short_16","alias_value":"RTJECH2SWRGI4U2W","created_at":"2026-07-05T03:05:48Z"},{"alias_kind":"pith_short_8","alias_value":"RTJECH2S","created_at":"2026-07-05T03:05:48Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2021:RTJECH2SWRGI4U2W3EDGLUM6RK","target":"record","payload":{"canonical_record":{"source":{"id":"2103.13415","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2021-03-24T18:02:11Z","cross_cats_sorted":["cs.GR"],"title_canon_sha256":"254a048cd654713af346d3ba9182062931da17da0f9ccf253f5234bdf7583dda","abstract_canon_sha256":"f036f17f843c40a77857bb34dfd8f33eb20bbf51b6df3b6e1ba1f3915ed0503d"},"schema_version":"1.0"},"canonical_sha256":"8cd2411f52b44c8e5356d90665d19e8ab6d944113e83e958f46a97d00aa5fe9c","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T03:05:48.515385Z","signature_b64":"PMM1z5gbUseXIE5HU+OUgEBL+7oeL1JH0+1ev/ylF6WURTzPA3FPejSXE5o58um7r1M7mDrMobppDecpA0u2Bw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"8cd2411f52b44c8e5356d90665d19e8ab6d944113e83e958f46a97d00aa5fe9c","last_reissued_at":"2026-07-05T03:05:48.514847Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T03:05:48.514847Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2103.13415","source_version":3,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T03:05:48Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"P2dg/xVAXD3BJyTPE2wMF4ufvbLkgGVDckAWO50JCcwffoLhe8m2qQpIwJspSrQXukI1jeslFBm1w204xmzOBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-07T08:16:32.787287Z"},"content_sha256":"89aef741ce7b5bd0d01724036d5214e4b130a6407fb9c1f525b20a2de3d34446","schema_version":"1.0","event_id":"sha256:89aef741ce7b5bd0d01724036d5214e4b130a6407fb9c1f525b20a2de3d34446"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2021:RTJECH2SWRGI4U2W3EDGLUM6RK","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Mip-NeRF: A Multiscale Representation for Anti-Aliasing Neural Radiance Fields","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cs.GR"],"primary_cat":"cs.CV","authors_text":"Ben Mildenhall, Jonathan T. Barron, Matthew Tancik, Peter Hedman, Pratul P. Srinivasan, Ricardo Martin-Brualla","submitted_at":"2021-03-24T18:02:11Z","abstract_excerpt":"The rendering procedure used by neural radiance fields (NeRF) samples a scene with a single ray per pixel and may therefore produce renderings that are excessively blurred or aliased when training or testing images observe scene content at different resolutions. The straightforward solution of supersampling by rendering with multiple rays per pixel is impractical for NeRF, because rendering each ray requires querying a multilayer perceptron hundreds of times. Our solution, which we call \"mip-NeRF\" (a la \"mipmap\"), extends NeRF to represent the scene at a continuously-valued scale. By efficient"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2103.13415","kind":"arxiv","version":3},"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/2103.13415/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":"2026-07-05T03:05:48Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"1akusCG2dR/xedQRyKUx5uEAE/GpKGcQDtYzVh2BhBTgjgwECIBxFPlU8SJmpfCSbSu7fV2RVmIMYx9S1J5mDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-07T08:16:32.787696Z"},"content_sha256":"4f5637bad2b87a866a6a04e92550c29989704a32b6525750e945f3d9b2b836fd","schema_version":"1.0","event_id":"sha256:4f5637bad2b87a866a6a04e92550c29989704a32b6525750e945f3d9b2b836fd"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/RTJECH2SWRGI4U2W3EDGLUM6RK/bundle.json","state_url":"https://pith.science/pith/RTJECH2SWRGI4U2W3EDGLUM6RK/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/RTJECH2SWRGI4U2W3EDGLUM6RK/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":"2026-07-07T08:16:32Z","links":{"resolver":"https://pith.science/pith/RTJECH2SWRGI4U2W3EDGLUM6RK","bundle":"https://pith.science/pith/RTJECH2SWRGI4U2W3EDGLUM6RK/bundle.json","state":"https://pith.science/pith/RTJECH2SWRGI4U2W3EDGLUM6RK/state.json","well_known_bundle":"https://pith.science/.well-known/pith/RTJECH2SWRGI4U2W3EDGLUM6RK/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2021:RTJECH2SWRGI4U2W3EDGLUM6RK","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":"f036f17f843c40a77857bb34dfd8f33eb20bbf51b6df3b6e1ba1f3915ed0503d","cross_cats_sorted":["cs.GR"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2021-03-24T18:02:11Z","title_canon_sha256":"254a048cd654713af346d3ba9182062931da17da0f9ccf253f5234bdf7583dda"},"schema_version":"1.0","source":{"id":"2103.13415","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2103.13415","created_at":"2026-07-05T03:05:48Z"},{"alias_kind":"arxiv_version","alias_value":"2103.13415v3","created_at":"2026-07-05T03:05:48Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2103.13415","created_at":"2026-07-05T03:05:48Z"},{"alias_kind":"pith_short_12","alias_value":"RTJECH2SWRGI","created_at":"2026-07-05T03:05:48Z"},{"alias_kind":"pith_short_16","alias_value":"RTJECH2SWRGI4U2W","created_at":"2026-07-05T03:05:48Z"},{"alias_kind":"pith_short_8","alias_value":"RTJECH2S","created_at":"2026-07-05T03:05:48Z"}],"graph_snapshots":[{"event_id":"sha256:4f5637bad2b87a866a6a04e92550c29989704a32b6525750e945f3d9b2b836fd","target":"graph","created_at":"2026-07-05T03:05:48Z","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/2103.13415/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"The rendering procedure used by neural radiance fields (NeRF) samples a scene with a single ray per pixel and may therefore produce renderings that are excessively blurred or aliased when training or testing images observe scene content at different resolutions. The straightforward solution of supersampling by rendering with multiple rays per pixel is impractical for NeRF, because rendering each ray requires querying a multilayer perceptron hundreds of times. Our solution, which we call \"mip-NeRF\" (a la \"mipmap\"), extends NeRF to represent the scene at a continuously-valued scale. By efficient","authors_text":"Ben Mildenhall, Jonathan T. Barron, Matthew Tancik, Peter Hedman, Pratul P. Srinivasan, Ricardo Martin-Brualla","cross_cats":["cs.GR"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2021-03-24T18:02:11Z","title":"Mip-NeRF: A Multiscale Representation for Anti-Aliasing Neural Radiance Fields"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2103.13415","kind":"arxiv","version":3},"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":"sha256:89aef741ce7b5bd0d01724036d5214e4b130a6407fb9c1f525b20a2de3d34446","target":"record","created_at":"2026-07-05T03:05:48Z","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":"f036f17f843c40a77857bb34dfd8f33eb20bbf51b6df3b6e1ba1f3915ed0503d","cross_cats_sorted":["cs.GR"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2021-03-24T18:02:11Z","title_canon_sha256":"254a048cd654713af346d3ba9182062931da17da0f9ccf253f5234bdf7583dda"},"schema_version":"1.0","source":{"id":"2103.13415","kind":"arxiv","version":3}},"canonical_sha256":"8cd2411f52b44c8e5356d90665d19e8ab6d944113e83e958f46a97d00aa5fe9c","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"8cd2411f52b44c8e5356d90665d19e8ab6d944113e83e958f46a97d00aa5fe9c","first_computed_at":"2026-07-05T03:05:48.514847Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T03:05:48.514847Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"PMM1z5gbUseXIE5HU+OUgEBL+7oeL1JH0+1ev/ylF6WURTzPA3FPejSXE5o58um7r1M7mDrMobppDecpA0u2Bw==","signature_status":"signed_v1","signed_at":"2026-07-05T03:05:48.515385Z","signed_message":"canonical_sha256_bytes"},"source_id":"2103.13415","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:89aef741ce7b5bd0d01724036d5214e4b130a6407fb9c1f525b20a2de3d34446","sha256:4f5637bad2b87a866a6a04e92550c29989704a32b6525750e945f3d9b2b836fd"],"state_sha256":"bd8130326b822308a4de21d00ba45c15bfbcf7d56838bbfaffe26c735104a743"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"iKfZeCbpHhpAHGVXt2RVjLmTx3SFg7oAtj7/uEyA3khpYlQNknNTqo0isIRM/I7AQ6Z4pD6DAzgoyYTXXa+/AQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-07T08:16:32.789830Z","bundle_sha256":"a7fda1e1b2c988b06c539608e40ec6a3490b29d6e969b8e4d48fad77b4705d7c"}}