{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2016:AZXHXADSJ6VC7KL3EI5SUQBLU3","short_pith_number":"pith:AZXHXADS","canonical_record":{"source":{"id":"1607.01454","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2016-07-06T01:38:27Z","cross_cats_sorted":["physics.atom-ph"],"title_canon_sha256":"9f0f3d17ef2d10292ac41fa3f52f6c04d698b2143852141c73b99696effbd582","abstract_canon_sha256":"8ad388f48747749b545ec6b8e3c58071993ffdff1b257e5887f0f6b6a14f38fa"},"schema_version":"1.0"},"canonical_sha256":"066e7b80724faa2fa97b223b2a402ba6e429c6aac23a6eed7d8356751d27b4de","source":{"kind":"arxiv","id":"1607.01454","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1607.01454","created_at":"2026-05-18T01:04:18Z"},{"alias_kind":"arxiv_version","alias_value":"1607.01454v2","created_at":"2026-05-18T01:04:18Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1607.01454","created_at":"2026-05-18T01:04:18Z"},{"alias_kind":"pith_short_12","alias_value":"AZXHXADSJ6VC","created_at":"2026-05-18T12:30:07Z"},{"alias_kind":"pith_short_16","alias_value":"AZXHXADSJ6VC7KL3","created_at":"2026-05-18T12:30:07Z"},{"alias_kind":"pith_short_8","alias_value":"AZXHXADS","created_at":"2026-05-18T12:30:07Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2016:AZXHXADSJ6VC7KL3EI5SUQBLU3","target":"record","payload":{"canonical_record":{"source":{"id":"1607.01454","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2016-07-06T01:38:27Z","cross_cats_sorted":["physics.atom-ph"],"title_canon_sha256":"9f0f3d17ef2d10292ac41fa3f52f6c04d698b2143852141c73b99696effbd582","abstract_canon_sha256":"8ad388f48747749b545ec6b8e3c58071993ffdff1b257e5887f0f6b6a14f38fa"},"schema_version":"1.0"},"canonical_sha256":"066e7b80724faa2fa97b223b2a402ba6e429c6aac23a6eed7d8356751d27b4de","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:04:18.301227Z","signature_b64":"YjvYdNVke4f9Dg5MdTL7q4tHTfnR6zkpzdtfiTSTC1tq2tCyNDVRJknLOmbJrCpdDl48eCMMMlIShoMEEQC3DA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"066e7b80724faa2fa97b223b2a402ba6e429c6aac23a6eed7d8356751d27b4de","last_reissued_at":"2026-05-18T01:04:18.300854Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:04:18.300854Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1607.01454","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T01:04:18Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"4lUU+MS+jFhOII8PNI5Tx2QlBN0GXVoZ5jqAASSYqmtywcPrPKv1cumyheuLR8w0mx7udZcDeAqEF+P8lykFDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T16:25:27.532729Z"},"content_sha256":"9ed7443264e5eee6ed6386d0e7227af33398e0617a0b182e4668ed0b5a8a1267","schema_version":"1.0","event_id":"sha256:9ed7443264e5eee6ed6386d0e7227af33398e0617a0b182e4668ed0b5a8a1267"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2016:AZXHXADSJ6VC7KL3EI5SUQBLU3","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Verifying quantum superpositions at metre scales","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["physics.atom-ph"],"primary_cat":"quant-ph","authors_text":"Dan M. Stamper-Kurn, G. Edward Marti, Holger M\\\"uller","submitted_at":"2016-07-06T01:38:27Z","abstract_excerpt":"While the existence of quantum superpositions of massive particles over microscopic separations has been established since the birth of quantum mechanics, the maintenance of superposition states over macroscopic separations is a subject of modern experimental tests. In Ref. [1], T. Kovachy et al. report on applying optical pulses to place a freely falling Bose-Einstein condensate into a superposition of two trajectories that separate by an impressive distance of 54 cm before being redirected toward one another. When the trajectories overlap, a final optical pulse produces interference with hig"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1607.01454","kind":"arxiv","version":2},"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":"2026-05-18T01:04:18Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"jtEwaaOshyBf3iE2/nGLhantL/sBj30qFRST2WA8v7qqoAVaJajuKN+9fvSBw9xHJe2yObT+tP2693O1xMEeAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T16:25:27.533364Z"},"content_sha256":"9016dcaa7ab32370e5fcc545aa25ddc82aff11f265ceca8206a065244e906b60","schema_version":"1.0","event_id":"sha256:9016dcaa7ab32370e5fcc545aa25ddc82aff11f265ceca8206a065244e906b60"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/AZXHXADSJ6VC7KL3EI5SUQBLU3/bundle.json","state_url":"https://pith.science/pith/AZXHXADSJ6VC7KL3EI5SUQBLU3/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/AZXHXADSJ6VC7KL3EI5SUQBLU3/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":"2026-05-28T16:25:27Z","links":{"resolver":"https://pith.science/pith/AZXHXADSJ6VC7KL3EI5SUQBLU3","bundle":"https://pith.science/pith/AZXHXADSJ6VC7KL3EI5SUQBLU3/bundle.json","state":"https://pith.science/pith/AZXHXADSJ6VC7KL3EI5SUQBLU3/state.json","well_known_bundle":"https://pith.science/.well-known/pith/AZXHXADSJ6VC7KL3EI5SUQBLU3/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:AZXHXADSJ6VC7KL3EI5SUQBLU3","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":"8ad388f48747749b545ec6b8e3c58071993ffdff1b257e5887f0f6b6a14f38fa","cross_cats_sorted":["physics.atom-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2016-07-06T01:38:27Z","title_canon_sha256":"9f0f3d17ef2d10292ac41fa3f52f6c04d698b2143852141c73b99696effbd582"},"schema_version":"1.0","source":{"id":"1607.01454","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1607.01454","created_at":"2026-05-18T01:04:18Z"},{"alias_kind":"arxiv_version","alias_value":"1607.01454v2","created_at":"2026-05-18T01:04:18Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1607.01454","created_at":"2026-05-18T01:04:18Z"},{"alias_kind":"pith_short_12","alias_value":"AZXHXADSJ6VC","created_at":"2026-05-18T12:30:07Z"},{"alias_kind":"pith_short_16","alias_value":"AZXHXADSJ6VC7KL3","created_at":"2026-05-18T12:30:07Z"},{"alias_kind":"pith_short_8","alias_value":"AZXHXADS","created_at":"2026-05-18T12:30:07Z"}],"graph_snapshots":[{"event_id":"sha256:9016dcaa7ab32370e5fcc545aa25ddc82aff11f265ceca8206a065244e906b60","target":"graph","created_at":"2026-05-18T01:04:18Z","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":"While the existence of quantum superpositions of massive particles over microscopic separations has been established since the birth of quantum mechanics, the maintenance of superposition states over macroscopic separations is a subject of modern experimental tests. In Ref. [1], T. Kovachy et al. report on applying optical pulses to place a freely falling Bose-Einstein condensate into a superposition of two trajectories that separate by an impressive distance of 54 cm before being redirected toward one another. When the trajectories overlap, a final optical pulse produces interference with hig","authors_text":"Dan M. Stamper-Kurn, G. Edward Marti, Holger M\\\"uller","cross_cats":["physics.atom-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2016-07-06T01:38:27Z","title":"Verifying quantum superpositions at metre scales"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1607.01454","kind":"arxiv","version":2},"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":"sha256:9ed7443264e5eee6ed6386d0e7227af33398e0617a0b182e4668ed0b5a8a1267","target":"record","created_at":"2026-05-18T01:04:18Z","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":"8ad388f48747749b545ec6b8e3c58071993ffdff1b257e5887f0f6b6a14f38fa","cross_cats_sorted":["physics.atom-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2016-07-06T01:38:27Z","title_canon_sha256":"9f0f3d17ef2d10292ac41fa3f52f6c04d698b2143852141c73b99696effbd582"},"schema_version":"1.0","source":{"id":"1607.01454","kind":"arxiv","version":2}},"canonical_sha256":"066e7b80724faa2fa97b223b2a402ba6e429c6aac23a6eed7d8356751d27b4de","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"066e7b80724faa2fa97b223b2a402ba6e429c6aac23a6eed7d8356751d27b4de","first_computed_at":"2026-05-18T01:04:18.300854Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:04:18.300854Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"YjvYdNVke4f9Dg5MdTL7q4tHTfnR6zkpzdtfiTSTC1tq2tCyNDVRJknLOmbJrCpdDl48eCMMMlIShoMEEQC3DA==","signature_status":"signed_v1","signed_at":"2026-05-18T01:04:18.301227Z","signed_message":"canonical_sha256_bytes"},"source_id":"1607.01454","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:9ed7443264e5eee6ed6386d0e7227af33398e0617a0b182e4668ed0b5a8a1267","sha256:9016dcaa7ab32370e5fcc545aa25ddc82aff11f265ceca8206a065244e906b60"],"state_sha256":"5036b2e22a7276a43cf2c928367fab2d80bba065902b648b6799c22b716857a3"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"x/WOq6XeNC+TEnwwDmMH+5Mq7egbQgW0o5yzNilFZi609hqLF581JnZAaz5owIF899boyIHWvDbfa7KW3fGmAw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-28T16:25:27.536674Z","bundle_sha256":"f29b30fa275007351850cee318dfd83072454f1dc28836d6fe2c21cdc7035ed1"}}