{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2007:7ZMS2YMNWDGLBYAVQMRRGI24TR","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":"cc644ac10c2e350029702e3231a367f1cd9e055f49a7a45410906eb1fc80bccf","cross_cats_sorted":["physics.gen-ph","physics.optics"],"license":"","primary_cat":"physics.class-ph","submitted_at":"2007-09-16T01:00:23Z","title_canon_sha256":"c80d066c186c6bafca49c3c71c060d6fdbbcadd56a9766d13fa256dc18c3eff2"},"schema_version":"1.0","source":{"id":"0709.2453","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0709.2453","created_at":"2026-05-18T00:54:04Z"},{"alias_kind":"arxiv_version","alias_value":"0709.2453v1","created_at":"2026-05-18T00:54:04Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0709.2453","created_at":"2026-05-18T00:54:04Z"},{"alias_kind":"pith_short_12","alias_value":"7ZMS2YMNWDGL","created_at":"2026-05-18T12:25:55Z"},{"alias_kind":"pith_short_16","alias_value":"7ZMS2YMNWDGLBYAV","created_at":"2026-05-18T12:25:55Z"},{"alias_kind":"pith_short_8","alias_value":"7ZMS2YMN","created_at":"2026-05-18T12:25:55Z"}],"graph_snapshots":[{"event_id":"sha256:9a2e0bc73ac1661fbc671e1257af757b88ba214b22226b108cead9659c669e22","target":"graph","created_at":"2026-05-18T00:54:04Z","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":"Some experiments, performed at Berkeley, Cologne, Florence, Vienna, Orsay, Rennes, etc., led to the claim that something seems to travel with a group velocity larger than the speed c of light in vacuum. Various other experimental results seem to point in the same direction: For instance, localized wavelet- type solutions to Maxwell equations have been found, both theoretically and experimentally, that travel with superluminal speed. [Even muonic and electronic neutrinos [it has been proposed] might be \"tachyons\", since their square mass appears to be negative]. With regard to the first-mention","authors_text":"Erasmo Recami, Flavio Fontana, Roberto Garavaglia","cross_cats":["physics.gen-ph","physics.optics"],"headline":"","license":"","primary_cat":"physics.class-ph","submitted_at":"2007-09-16T01:00:23Z","title":"About Superluminal motions and Special Relativity: A Discussion of some recent Experiments, and the solution of the Causal Paradoxes"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0709.2453","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":"sha256:931dd2c5acf20a75f8f769afc9dfb2a74a0664400493147d4ae24558cdbddbfe","target":"record","created_at":"2026-05-18T00:54:04Z","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":"cc644ac10c2e350029702e3231a367f1cd9e055f49a7a45410906eb1fc80bccf","cross_cats_sorted":["physics.gen-ph","physics.optics"],"license":"","primary_cat":"physics.class-ph","submitted_at":"2007-09-16T01:00:23Z","title_canon_sha256":"c80d066c186c6bafca49c3c71c060d6fdbbcadd56a9766d13fa256dc18c3eff2"},"schema_version":"1.0","source":{"id":"0709.2453","kind":"arxiv","version":1}},"canonical_sha256":"fe592d618db0ccb0e015832313235c9c528fd4b31ff54bd39db24b474f770d57","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"fe592d618db0ccb0e015832313235c9c528fd4b31ff54bd39db24b474f770d57","first_computed_at":"2026-05-18T00:54:04.233089Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:54:04.233089Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"HmU1EA3hrCvnC7MlhJAlpktVEWqzpMJ6JdAPPmcFJ6KyUF465zChdJRjEzGdTXZwzFhPPAPa+oW22RMmu/5LDQ==","signature_status":"signed_v1","signed_at":"2026-05-18T00:54:04.233496Z","signed_message":"canonical_sha256_bytes"},"source_id":"0709.2453","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:931dd2c5acf20a75f8f769afc9dfb2a74a0664400493147d4ae24558cdbddbfe","sha256:9a2e0bc73ac1661fbc671e1257af757b88ba214b22226b108cead9659c669e22"],"state_sha256":"419f8f3fbbd0bb8a0562b5be8c84de1ef938f376d50c00512f1e2ee276cea843"}