{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2019:AQBD24PIUROJOF34Y4QYV3KMS4","short_pith_number":"pith:AQBD24PI","canonical_record":{"source":{"id":"1901.09603","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ed-ph","submitted_at":"2019-01-28T11:13:51Z","cross_cats_sorted":[],"title_canon_sha256":"4224304e5c9f93edb98271b8318420220d400570565cd69a06b98302ad71f4e0","abstract_canon_sha256":"96befa53f2e3a004f29bf70059738caf6a3d04ddbc41a9b3931347415c6d69b8"},"schema_version":"1.0"},"canonical_sha256":"04023d71e8a45c97177cc7218aed4c9728e3697b246ddab5d1969142b7e74e26","source":{"kind":"arxiv","id":"1901.09603","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1901.09603","created_at":"2026-05-17T23:55:24Z"},{"alias_kind":"arxiv_version","alias_value":"1901.09603v1","created_at":"2026-05-17T23:55:24Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1901.09603","created_at":"2026-05-17T23:55:24Z"},{"alias_kind":"pith_short_12","alias_value":"AQBD24PIUROJ","created_at":"2026-05-18T12:33:12Z"},{"alias_kind":"pith_short_16","alias_value":"AQBD24PIUROJOF34","created_at":"2026-05-18T12:33:12Z"},{"alias_kind":"pith_short_8","alias_value":"AQBD24PI","created_at":"2026-05-18T12:33:12Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2019:AQBD24PIUROJOF34Y4QYV3KMS4","target":"record","payload":{"canonical_record":{"source":{"id":"1901.09603","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ed-ph","submitted_at":"2019-01-28T11:13:51Z","cross_cats_sorted":[],"title_canon_sha256":"4224304e5c9f93edb98271b8318420220d400570565cd69a06b98302ad71f4e0","abstract_canon_sha256":"96befa53f2e3a004f29bf70059738caf6a3d04ddbc41a9b3931347415c6d69b8"},"schema_version":"1.0"},"canonical_sha256":"04023d71e8a45c97177cc7218aed4c9728e3697b246ddab5d1969142b7e74e26","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:55:24.345563Z","signature_b64":"JbH498vNeZPR9R3WErSmbEAWvl9wZPQx0hNrpBvjMey6bbohRWNT20q48IHhf7AXi69gilhNZu7bZEm0Ne/wAA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"04023d71e8a45c97177cc7218aed4c9728e3697b246ddab5d1969142b7e74e26","last_reissued_at":"2026-05-17T23:55:24.345009Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:55:24.345009Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1901.09603","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":"2026-05-17T23:55:24Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"OYKNiDjyvgPkFi5OijZHCgUHRjDkGEI3x3iJgkNnnEYb7ptDStJB2H83PDl2Tpti+YVUSWd5+nRG5q/4bAirAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-02T22:56:10.614071Z"},"content_sha256":"54076876b981c70d8ed9b645dfd7dfaa1663e0da96488b4e13f5c0bc3117d912","schema_version":"1.0","event_id":"sha256:54076876b981c70d8ed9b645dfd7dfaa1663e0da96488b4e13f5c0bc3117d912"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2019:AQBD24PIUROJOF34Y4QYV3KMS4","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Additional material to \"Levitation? Yes, it is possible!\"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"physics.ed-ph","authors_text":"Alberto T. P\\'erez, Armando Fern\\'andez-Prieto, Miguel A. S. Quintanilla, Pablo Garc\\'ia-S\\'anchez","submitted_at":"2019-01-28T11:13:51Z","abstract_excerpt":"This document contains supplementary material for the article with the same title that appeared in American Journal of Physics in 2019"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1901.09603","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":""},"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":"2026-05-17T23:55:24Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"gQjzmZOBgWdsWerR9w57ytlyFeubQkKKPkR6JbSYhk/cvKNqdkPMDDjLeGkaRk6lJm7UeTEGhpPgK1zANhBFAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-02T22:56:10.614463Z"},"content_sha256":"c1340ce45168ac331f8f29e7cf884202c712b4ef46a47247f4046958ac51f732","schema_version":"1.0","event_id":"sha256:c1340ce45168ac331f8f29e7cf884202c712b4ef46a47247f4046958ac51f732"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/AQBD24PIUROJOF34Y4QYV3KMS4/bundle.json","state_url":"https://pith.science/pith/AQBD24PIUROJOF34Y4QYV3KMS4/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/AQBD24PIUROJOF34Y4QYV3KMS4/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":"2026-06-02T22:56:10Z","links":{"resolver":"https://pith.science/pith/AQBD24PIUROJOF34Y4QYV3KMS4","bundle":"https://pith.science/pith/AQBD24PIUROJOF34Y4QYV3KMS4/bundle.json","state":"https://pith.science/pith/AQBD24PIUROJOF34Y4QYV3KMS4/state.json","well_known_bundle":"https://pith.science/.well-known/pith/AQBD24PIUROJOF34Y4QYV3KMS4/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:AQBD24PIUROJOF34Y4QYV3KMS4","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":"96befa53f2e3a004f29bf70059738caf6a3d04ddbc41a9b3931347415c6d69b8","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ed-ph","submitted_at":"2019-01-28T11:13:51Z","title_canon_sha256":"4224304e5c9f93edb98271b8318420220d400570565cd69a06b98302ad71f4e0"},"schema_version":"1.0","source":{"id":"1901.09603","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1901.09603","created_at":"2026-05-17T23:55:24Z"},{"alias_kind":"arxiv_version","alias_value":"1901.09603v1","created_at":"2026-05-17T23:55:24Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1901.09603","created_at":"2026-05-17T23:55:24Z"},{"alias_kind":"pith_short_12","alias_value":"AQBD24PIUROJ","created_at":"2026-05-18T12:33:12Z"},{"alias_kind":"pith_short_16","alias_value":"AQBD24PIUROJOF34","created_at":"2026-05-18T12:33:12Z"},{"alias_kind":"pith_short_8","alias_value":"AQBD24PI","created_at":"2026-05-18T12:33:12Z"}],"graph_snapshots":[{"event_id":"sha256:c1340ce45168ac331f8f29e7cf884202c712b4ef46a47247f4046958ac51f732","target":"graph","created_at":"2026-05-17T23:55:24Z","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":"This document contains supplementary material for the article with the same title that appeared in American Journal of Physics in 2019","authors_text":"Alberto T. P\\'erez, Armando Fern\\'andez-Prieto, Miguel A. S. Quintanilla, Pablo Garc\\'ia-S\\'anchez","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ed-ph","submitted_at":"2019-01-28T11:13:51Z","title":"Additional material to \"Levitation? Yes, it is possible!\""},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1901.09603","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":"sha256:54076876b981c70d8ed9b645dfd7dfaa1663e0da96488b4e13f5c0bc3117d912","target":"record","created_at":"2026-05-17T23:55:24Z","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":"96befa53f2e3a004f29bf70059738caf6a3d04ddbc41a9b3931347415c6d69b8","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ed-ph","submitted_at":"2019-01-28T11:13:51Z","title_canon_sha256":"4224304e5c9f93edb98271b8318420220d400570565cd69a06b98302ad71f4e0"},"schema_version":"1.0","source":{"id":"1901.09603","kind":"arxiv","version":1}},"canonical_sha256":"04023d71e8a45c97177cc7218aed4c9728e3697b246ddab5d1969142b7e74e26","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"04023d71e8a45c97177cc7218aed4c9728e3697b246ddab5d1969142b7e74e26","first_computed_at":"2026-05-17T23:55:24.345009Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:55:24.345009Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"JbH498vNeZPR9R3WErSmbEAWvl9wZPQx0hNrpBvjMey6bbohRWNT20q48IHhf7AXi69gilhNZu7bZEm0Ne/wAA==","signature_status":"signed_v1","signed_at":"2026-05-17T23:55:24.345563Z","signed_message":"canonical_sha256_bytes"},"source_id":"1901.09603","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:54076876b981c70d8ed9b645dfd7dfaa1663e0da96488b4e13f5c0bc3117d912","sha256:c1340ce45168ac331f8f29e7cf884202c712b4ef46a47247f4046958ac51f732"],"state_sha256":"fe95b755a243ca0061c7c785044b438cd5605eee24e4bd0a8c36e7bd00b9de2a"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"szmH4bpoLd20Mqyvk/loyI2XUkHaCnARsqNW+Ef/YPgSqaLnFkqK95GxJQhjbFd07Uj/JngKGzV3zZJawBIFDA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-02T22:56:10.616447Z","bundle_sha256":"e605ed9ef7fbc381ac372caead598b2c6bab37b2631e3a8a6715e1e6019b203b"}}