{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2015:VMGBS7YCDI2U6IZRANC4CN3IZS","short_pith_number":"pith:VMGBS7YC","canonical_record":{"source":{"id":"1511.03583","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.pop-ph","submitted_at":"2015-09-20T15:15:58Z","cross_cats_sorted":[],"title_canon_sha256":"13e9355ac5cb7ad8fc9cd9567b103f4bef3bc15c7b9e0fb6c8bfaa656d30813e","abstract_canon_sha256":"2ef4d0934e57645117fd53fc8c002578e14d5c952d28cfef3b965963a82d9bc4"},"schema_version":"1.0"},"canonical_sha256":"ab0c197f021a354f23310345c13768ccb5c67476e2180509dfd7ccd4887e9913","source":{"kind":"arxiv","id":"1511.03583","version":3},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1511.03583","created_at":"2026-05-18T00:57:18Z"},{"alias_kind":"arxiv_version","alias_value":"1511.03583v3","created_at":"2026-05-18T00:57:18Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1511.03583","created_at":"2026-05-18T00:57:18Z"},{"alias_kind":"pith_short_12","alias_value":"VMGBS7YCDI2U","created_at":"2026-05-18T12:29:47Z"},{"alias_kind":"pith_short_16","alias_value":"VMGBS7YCDI2U6IZR","created_at":"2026-05-18T12:29:47Z"},{"alias_kind":"pith_short_8","alias_value":"VMGBS7YC","created_at":"2026-05-18T12:29:47Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2015:VMGBS7YCDI2U6IZRANC4CN3IZS","target":"record","payload":{"canonical_record":{"source":{"id":"1511.03583","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.pop-ph","submitted_at":"2015-09-20T15:15:58Z","cross_cats_sorted":[],"title_canon_sha256":"13e9355ac5cb7ad8fc9cd9567b103f4bef3bc15c7b9e0fb6c8bfaa656d30813e","abstract_canon_sha256":"2ef4d0934e57645117fd53fc8c002578e14d5c952d28cfef3b965963a82d9bc4"},"schema_version":"1.0"},"canonical_sha256":"ab0c197f021a354f23310345c13768ccb5c67476e2180509dfd7ccd4887e9913","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:57:18.133782Z","signature_b64":"56/ukmVo/AmYJZyGUVi9+d95bRbdLMeW10Ftz0xeP+o3gFsU2W7TR0ca+7eGORGKDBltAd/BbQMu0B52gQxTBQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"ab0c197f021a354f23310345c13768ccb5c67476e2180509dfd7ccd4887e9913","last_reissued_at":"2026-05-18T00:57:18.133110Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:57:18.133110Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1511.03583","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":"2026-05-18T00:57:18Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"bxnPdeuFqe9FUJrf/AIPXjn5J8UNxYLpN/4EG7eO8g8GMQEr/EF2DFpSBI7shzVGuw++BpWqe3HVR/q8v/dyDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-06T02:29:27.547145Z"},"content_sha256":"4b08b30b1045d44912ea79d6eaad93d25fae94d9936eb11d3fa3972d791d2ed2","schema_version":"1.0","event_id":"sha256:4b08b30b1045d44912ea79d6eaad93d25fae94d9936eb11d3fa3972d791d2ed2"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2015:VMGBS7YCDI2U6IZRANC4CN3IZS","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The motion of two identical masses connected by an ideal string symmetrically placed over a corner","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"physics.pop-ph","authors_text":"Asim Gangopadhyaya, Constantin Rasinariu","submitted_at":"2015-09-20T15:15:58Z","abstract_excerpt":"We introduce a novel, two-mass system that slides up an inclined plane while its center of mass moves down. The system consists of two identical masses connected by an ideal string symmetrically placed over a corner-shaped support. This system is similar to a double-cone that rolls up an inclined set of V-shaped rails. We find the double-cone's motion easy to demonstrate but difficult to analyze. Our example here is more straightforward to follow, and the experimental observations are in good agreement with the theoretical predictions."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1511.03583","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":""},"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":"2026-05-18T00:57:18Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"hlKNOdWvRprFQ2PY0a69SBEZnCDpBSsq4VvWBQZw4DBukv0e3y3y9irGQs9EZ1uQlEaafJLlBO35VGRlgMbWCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-06T02:29:27.547838Z"},"content_sha256":"3f3c3dfaf50e77c4213ed10310835e792878bfff6d86b4cf609f0208a772358e","schema_version":"1.0","event_id":"sha256:3f3c3dfaf50e77c4213ed10310835e792878bfff6d86b4cf609f0208a772358e"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/VMGBS7YCDI2U6IZRANC4CN3IZS/bundle.json","state_url":"https://pith.science/pith/VMGBS7YCDI2U6IZRANC4CN3IZS/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/VMGBS7YCDI2U6IZRANC4CN3IZS/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":"2026-06-06T02:29:27Z","links":{"resolver":"https://pith.science/pith/VMGBS7YCDI2U6IZRANC4CN3IZS","bundle":"https://pith.science/pith/VMGBS7YCDI2U6IZRANC4CN3IZS/bundle.json","state":"https://pith.science/pith/VMGBS7YCDI2U6IZRANC4CN3IZS/state.json","well_known_bundle":"https://pith.science/.well-known/pith/VMGBS7YCDI2U6IZRANC4CN3IZS/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:VMGBS7YCDI2U6IZRANC4CN3IZS","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":"2ef4d0934e57645117fd53fc8c002578e14d5c952d28cfef3b965963a82d9bc4","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.pop-ph","submitted_at":"2015-09-20T15:15:58Z","title_canon_sha256":"13e9355ac5cb7ad8fc9cd9567b103f4bef3bc15c7b9e0fb6c8bfaa656d30813e"},"schema_version":"1.0","source":{"id":"1511.03583","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1511.03583","created_at":"2026-05-18T00:57:18Z"},{"alias_kind":"arxiv_version","alias_value":"1511.03583v3","created_at":"2026-05-18T00:57:18Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1511.03583","created_at":"2026-05-18T00:57:18Z"},{"alias_kind":"pith_short_12","alias_value":"VMGBS7YCDI2U","created_at":"2026-05-18T12:29:47Z"},{"alias_kind":"pith_short_16","alias_value":"VMGBS7YCDI2U6IZR","created_at":"2026-05-18T12:29:47Z"},{"alias_kind":"pith_short_8","alias_value":"VMGBS7YC","created_at":"2026-05-18T12:29:47Z"}],"graph_snapshots":[{"event_id":"sha256:3f3c3dfaf50e77c4213ed10310835e792878bfff6d86b4cf609f0208a772358e","target":"graph","created_at":"2026-05-18T00:57:18Z","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":"We introduce a novel, two-mass system that slides up an inclined plane while its center of mass moves down. The system consists of two identical masses connected by an ideal string symmetrically placed over a corner-shaped support. This system is similar to a double-cone that rolls up an inclined set of V-shaped rails. We find the double-cone's motion easy to demonstrate but difficult to analyze. Our example here is more straightforward to follow, and the experimental observations are in good agreement with the theoretical predictions.","authors_text":"Asim Gangopadhyaya, Constantin Rasinariu","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.pop-ph","submitted_at":"2015-09-20T15:15:58Z","title":"The motion of two identical masses connected by an ideal string symmetrically placed over a corner"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1511.03583","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":"sha256:4b08b30b1045d44912ea79d6eaad93d25fae94d9936eb11d3fa3972d791d2ed2","target":"record","created_at":"2026-05-18T00:57:18Z","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":"2ef4d0934e57645117fd53fc8c002578e14d5c952d28cfef3b965963a82d9bc4","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.pop-ph","submitted_at":"2015-09-20T15:15:58Z","title_canon_sha256":"13e9355ac5cb7ad8fc9cd9567b103f4bef3bc15c7b9e0fb6c8bfaa656d30813e"},"schema_version":"1.0","source":{"id":"1511.03583","kind":"arxiv","version":3}},"canonical_sha256":"ab0c197f021a354f23310345c13768ccb5c67476e2180509dfd7ccd4887e9913","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"ab0c197f021a354f23310345c13768ccb5c67476e2180509dfd7ccd4887e9913","first_computed_at":"2026-05-18T00:57:18.133110Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:57:18.133110Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"56/ukmVo/AmYJZyGUVi9+d95bRbdLMeW10Ftz0xeP+o3gFsU2W7TR0ca+7eGORGKDBltAd/BbQMu0B52gQxTBQ==","signature_status":"signed_v1","signed_at":"2026-05-18T00:57:18.133782Z","signed_message":"canonical_sha256_bytes"},"source_id":"1511.03583","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:4b08b30b1045d44912ea79d6eaad93d25fae94d9936eb11d3fa3972d791d2ed2","sha256:3f3c3dfaf50e77c4213ed10310835e792878bfff6d86b4cf609f0208a772358e"],"state_sha256":"6fa26195552032a2c5eb2d6d2e23af4091374f78838ef506ad9d472db1cfcc02"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"V/kRNyPKxcnkkQrurrxzJ9FkTwoaHUW0trr8ak3YhAXbIzMdnzfN6DNRT2wIqvHULaOiw/MYpuicbh/eBTwRDg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-06T02:29:27.550409Z","bundle_sha256":"9473b0c7f3374de99799f51c5b4848dec91f5710b9f73797d51a6a809a2ff6fe"}}