{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2024:VXBTV2IMP7LWCONBLJTHNUXKBN","short_pith_number":"pith:VXBTV2IM","canonical_record":{"source":{"id":"2404.07364","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by-nc-sa/4.0/","primary_cat":"cs.HC","submitted_at":"2024-04-10T21:38:49Z","cross_cats_sorted":[],"title_canon_sha256":"a441e340d4cda5600b6080f183cc0d933759ccdf80924cedb5ca566f7887b4a2","abstract_canon_sha256":"dea891ef1c3c415c7c6bb2f8813bf8586efc6164de0b73479c9403ff155ed5d2"},"schema_version":"1.0"},"canonical_sha256":"adc33ae90c7fd76139a15a6676d2ea0b53266f7954216bc84889b3e2f4c394c2","source":{"kind":"arxiv","id":"2404.07364","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2404.07364","created_at":"2026-07-05T08:06:51Z"},{"alias_kind":"arxiv_version","alias_value":"2404.07364v1","created_at":"2026-07-05T08:06:51Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2404.07364","created_at":"2026-07-05T08:06:51Z"},{"alias_kind":"pith_short_12","alias_value":"VXBTV2IMP7LW","created_at":"2026-07-05T08:06:51Z"},{"alias_kind":"pith_short_16","alias_value":"VXBTV2IMP7LWCONB","created_at":"2026-07-05T08:06:51Z"},{"alias_kind":"pith_short_8","alias_value":"VXBTV2IM","created_at":"2026-07-05T08:06:51Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2024:VXBTV2IMP7LWCONBLJTHNUXKBN","target":"record","payload":{"canonical_record":{"source":{"id":"2404.07364","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by-nc-sa/4.0/","primary_cat":"cs.HC","submitted_at":"2024-04-10T21:38:49Z","cross_cats_sorted":[],"title_canon_sha256":"a441e340d4cda5600b6080f183cc0d933759ccdf80924cedb5ca566f7887b4a2","abstract_canon_sha256":"dea891ef1c3c415c7c6bb2f8813bf8586efc6164de0b73479c9403ff155ed5d2"},"schema_version":"1.0"},"canonical_sha256":"adc33ae90c7fd76139a15a6676d2ea0b53266f7954216bc84889b3e2f4c394c2","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T08:06:51.481708Z","signature_b64":"Ik5ntdyK3pCUFrho0MeelzbU86gOm2E3zhPYYNJl4S9ONpkBzv5/fthAEgv/lzuKW4hdTATHg4VG/fIhIogqAw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"adc33ae90c7fd76139a15a6676d2ea0b53266f7954216bc84889b3e2f4c394c2","last_reissued_at":"2026-07-05T08:06:51.481272Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T08:06:51.481272Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2404.07364","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":"2026-07-05T08:06:51Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"DLE4tbrWVSV+ieY3RxLlOr9kJN8YVFCL0/b8MMVOpywBUIKX3kLWJ41aTZLzrRUIxPVw5xRGkQKR5AKRAidZCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-29T06:54:37.873135Z"},"content_sha256":"c28fd9777006db57643ff1e8ad3ae914f42fa617c3cc7d173ab276b3e385f082","schema_version":"1.0","event_id":"sha256:c28fd9777006db57643ff1e8ad3ae914f42fa617c3cc7d173ab276b3e385f082"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2024:VXBTV2IMP7LWCONBLJTHNUXKBN","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Fabricating Paper Circuits with Subtractive Processing","license":"http://creativecommons.org/licenses/by-nc-sa/4.0/","headline":"","cross_cats":[],"primary_cat":"cs.HC","authors_text":"Ellen Yi-Luen Do, Krithik Ranjan, Ruhan Yang","submitted_at":"2024-04-10T21:38:49Z","abstract_excerpt":"This paper introduces a new method of paper circuit fabrication that overcomes design barriers and increases flexibility in circuit design. Conventional circuit boards rely on thin traces, which limits the complexity and accuracy when applied to paper circuits. To address this issue, we propose a method that uses large conductive zones in paper circuits and performs subtractive processing during their fabrication. This approach eliminates design barriers and allows for more flexibility in circuit design. We introduce PaperCAD, a software tool that simplifies the design process by converting tr"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2404.07364","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/2404.07364/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":"2026-07-05T08:06:51Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"TelRqj7RZjnkiJQU6yqQQKikHzofKt1zq2GNzMTJunBat4q/Klrl0a0B8xSgeaWfiafdtg2G50LZ/UFszOuqCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-29T06:54:37.873526Z"},"content_sha256":"cf351b7b1a5e6420b67ccbe802b92f63c24cdfd7e18d383de5f15acf0cdee0c6","schema_version":"1.0","event_id":"sha256:cf351b7b1a5e6420b67ccbe802b92f63c24cdfd7e18d383de5f15acf0cdee0c6"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/VXBTV2IMP7LWCONBLJTHNUXKBN/bundle.json","state_url":"https://pith.science/pith/VXBTV2IMP7LWCONBLJTHNUXKBN/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/VXBTV2IMP7LWCONBLJTHNUXKBN/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":"2026-07-29T06:54:37Z","links":{"resolver":"https://pith.science/pith/VXBTV2IMP7LWCONBLJTHNUXKBN","bundle":"https://pith.science/pith/VXBTV2IMP7LWCONBLJTHNUXKBN/bundle.json","state":"https://pith.science/pith/VXBTV2IMP7LWCONBLJTHNUXKBN/state.json","well_known_bundle":"https://pith.science/.well-known/pith/VXBTV2IMP7LWCONBLJTHNUXKBN/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2024:VXBTV2IMP7LWCONBLJTHNUXKBN","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":"dea891ef1c3c415c7c6bb2f8813bf8586efc6164de0b73479c9403ff155ed5d2","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by-nc-sa/4.0/","primary_cat":"cs.HC","submitted_at":"2024-04-10T21:38:49Z","title_canon_sha256":"a441e340d4cda5600b6080f183cc0d933759ccdf80924cedb5ca566f7887b4a2"},"schema_version":"1.0","source":{"id":"2404.07364","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2404.07364","created_at":"2026-07-05T08:06:51Z"},{"alias_kind":"arxiv_version","alias_value":"2404.07364v1","created_at":"2026-07-05T08:06:51Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2404.07364","created_at":"2026-07-05T08:06:51Z"},{"alias_kind":"pith_short_12","alias_value":"VXBTV2IMP7LW","created_at":"2026-07-05T08:06:51Z"},{"alias_kind":"pith_short_16","alias_value":"VXBTV2IMP7LWCONB","created_at":"2026-07-05T08:06:51Z"},{"alias_kind":"pith_short_8","alias_value":"VXBTV2IM","created_at":"2026-07-05T08:06:51Z"}],"graph_snapshots":[{"event_id":"sha256:cf351b7b1a5e6420b67ccbe802b92f63c24cdfd7e18d383de5f15acf0cdee0c6","target":"graph","created_at":"2026-07-05T08:06:51Z","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/2404.07364/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"This paper introduces a new method of paper circuit fabrication that overcomes design barriers and increases flexibility in circuit design. Conventional circuit boards rely on thin traces, which limits the complexity and accuracy when applied to paper circuits. To address this issue, we propose a method that uses large conductive zones in paper circuits and performs subtractive processing during their fabrication. This approach eliminates design barriers and allows for more flexibility in circuit design. We introduce PaperCAD, a software tool that simplifies the design process by converting tr","authors_text":"Ellen Yi-Luen Do, Krithik Ranjan, Ruhan Yang","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by-nc-sa/4.0/","primary_cat":"cs.HC","submitted_at":"2024-04-10T21:38:49Z","title":"Fabricating Paper Circuits with Subtractive Processing"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2404.07364","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:c28fd9777006db57643ff1e8ad3ae914f42fa617c3cc7d173ab276b3e385f082","target":"record","created_at":"2026-07-05T08:06:51Z","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":"dea891ef1c3c415c7c6bb2f8813bf8586efc6164de0b73479c9403ff155ed5d2","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by-nc-sa/4.0/","primary_cat":"cs.HC","submitted_at":"2024-04-10T21:38:49Z","title_canon_sha256":"a441e340d4cda5600b6080f183cc0d933759ccdf80924cedb5ca566f7887b4a2"},"schema_version":"1.0","source":{"id":"2404.07364","kind":"arxiv","version":1}},"canonical_sha256":"adc33ae90c7fd76139a15a6676d2ea0b53266f7954216bc84889b3e2f4c394c2","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"adc33ae90c7fd76139a15a6676d2ea0b53266f7954216bc84889b3e2f4c394c2","first_computed_at":"2026-07-05T08:06:51.481272Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T08:06:51.481272Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Ik5ntdyK3pCUFrho0MeelzbU86gOm2E3zhPYYNJl4S9ONpkBzv5/fthAEgv/lzuKW4hdTATHg4VG/fIhIogqAw==","signature_status":"signed_v1","signed_at":"2026-07-05T08:06:51.481708Z","signed_message":"canonical_sha256_bytes"},"source_id":"2404.07364","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:c28fd9777006db57643ff1e8ad3ae914f42fa617c3cc7d173ab276b3e385f082","sha256:cf351b7b1a5e6420b67ccbe802b92f63c24cdfd7e18d383de5f15acf0cdee0c6"],"state_sha256":"59f5678e4c9dc4e7b8ed63a5d8f3103dfb5e5adade84f4f609de556e95bc6f7f"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"tykQh1UUpXIELUg+Lekw/JJ7I4h5Xi4tlFkr5gN1KKUl6ZE62hUAnz3g57LvntMa2B8WQkAbvuUO5qh+5k3KAA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-29T06:54:37.875913Z","bundle_sha256":"b22adcdaa100def6836e5381aedf85f37e971325b2c9f26df903f4730b44ac5e"}}