{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2016:LLPYMHS5WRSSKM5MBK2L3RAAAK","short_pith_number":"pith:LLPYMHS5","canonical_record":{"source":{"id":"1603.04430","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2016-03-13T20:32:03Z","cross_cats_sorted":["gr-qc","hep-th"],"title_canon_sha256":"1e2950b36314edd5de44e8280fd923d5dc6fe7ce5af70151f6b24a4840ffd7a9","abstract_canon_sha256":"97d52d2ee049d23c939e5310f4858d76a14a6ac625d194a72c53e47546f81a1b"},"schema_version":"1.0"},"canonical_sha256":"5adf861e5db4652533ac0ab4bdc400028e4744845241d6801aa51d3cbed3c8ab","source":{"kind":"arxiv","id":"1603.04430","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1603.04430","created_at":"2026-05-18T01:16:39Z"},{"alias_kind":"arxiv_version","alias_value":"1603.04430v1","created_at":"2026-05-18T01:16:39Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1603.04430","created_at":"2026-05-18T01:16:39Z"},{"alias_kind":"pith_short_12","alias_value":"LLPYMHS5WRSS","created_at":"2026-05-18T12:30:29Z"},{"alias_kind":"pith_short_16","alias_value":"LLPYMHS5WRSSKM5M","created_at":"2026-05-18T12:30:29Z"},{"alias_kind":"pith_short_8","alias_value":"LLPYMHS5","created_at":"2026-05-18T12:30:29Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2016:LLPYMHS5WRSSKM5MBK2L3RAAAK","target":"record","payload":{"canonical_record":{"source":{"id":"1603.04430","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2016-03-13T20:32:03Z","cross_cats_sorted":["gr-qc","hep-th"],"title_canon_sha256":"1e2950b36314edd5de44e8280fd923d5dc6fe7ce5af70151f6b24a4840ffd7a9","abstract_canon_sha256":"97d52d2ee049d23c939e5310f4858d76a14a6ac625d194a72c53e47546f81a1b"},"schema_version":"1.0"},"canonical_sha256":"5adf861e5db4652533ac0ab4bdc400028e4744845241d6801aa51d3cbed3c8ab","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:16:39.705230Z","signature_b64":"rUp8Qv8/9kNdt9xpkG8UCVGQZKJJn8lH8sNjo69ELHN6ds8KJbrE5iTTbpQLEdg/kkut0TjV8y1bAet91q+WCg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"5adf861e5db4652533ac0ab4bdc400028e4744845241d6801aa51d3cbed3c8ab","last_reissued_at":"2026-05-18T01:16:39.704628Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:16:39.704628Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1603.04430","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":"2026-05-18T01:16:39Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"JGy5p2PxNKwt14hL0q2t7G00g4SIzbDF5oMtseGzal0FOMM7ldo0R8DW9JEp7EwaIpX0h6g9dfcpj7jSDP5XAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-01T17:54:19.769933Z"},"content_sha256":"26b50e9f6a0717bc632893389a196ea2abbb97ac50f732d96547abeae16184e0","schema_version":"1.0","event_id":"sha256:26b50e9f6a0717bc632893389a196ea2abbb97ac50f732d96547abeae16184e0"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2016:LLPYMHS5WRSSKM5MBK2L3RAAAK","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Probing a Gravitational Cat State: Experimental Possibilities","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["gr-qc","hep-th"],"primary_cat":"quant-ph","authors_text":"B. L. Hu, C. Anastopoulos, M. Derakhshani","submitted_at":"2016-03-13T20:32:03Z","abstract_excerpt":"This is a progress report on a preliminary feasibility study of experimental setups for preparing and probing a gravitational cat state [1]."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1603.04430","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":"2026-05-18T01:16:39Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"F9bK1swoDsrOHHZnqbweikPggc0O+JYyBLJjwl3jTNiHdx85eg+GdIiOzGTCcKVZXNMJPDjfDQ4eTOOYdYpxBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-01T17:54:19.770278Z"},"content_sha256":"8bdb9971e3c08994f1dfb2a7ff288b7865bf7e1e8595ec92f6a49f098526f667","schema_version":"1.0","event_id":"sha256:8bdb9971e3c08994f1dfb2a7ff288b7865bf7e1e8595ec92f6a49f098526f667"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/LLPYMHS5WRSSKM5MBK2L3RAAAK/bundle.json","state_url":"https://pith.science/pith/LLPYMHS5WRSSKM5MBK2L3RAAAK/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/LLPYMHS5WRSSKM5MBK2L3RAAAK/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":"2026-06-01T17:54:19Z","links":{"resolver":"https://pith.science/pith/LLPYMHS5WRSSKM5MBK2L3RAAAK","bundle":"https://pith.science/pith/LLPYMHS5WRSSKM5MBK2L3RAAAK/bundle.json","state":"https://pith.science/pith/LLPYMHS5WRSSKM5MBK2L3RAAAK/state.json","well_known_bundle":"https://pith.science/.well-known/pith/LLPYMHS5WRSSKM5MBK2L3RAAAK/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:LLPYMHS5WRSSKM5MBK2L3RAAAK","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":"97d52d2ee049d23c939e5310f4858d76a14a6ac625d194a72c53e47546f81a1b","cross_cats_sorted":["gr-qc","hep-th"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2016-03-13T20:32:03Z","title_canon_sha256":"1e2950b36314edd5de44e8280fd923d5dc6fe7ce5af70151f6b24a4840ffd7a9"},"schema_version":"1.0","source":{"id":"1603.04430","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1603.04430","created_at":"2026-05-18T01:16:39Z"},{"alias_kind":"arxiv_version","alias_value":"1603.04430v1","created_at":"2026-05-18T01:16:39Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1603.04430","created_at":"2026-05-18T01:16:39Z"},{"alias_kind":"pith_short_12","alias_value":"LLPYMHS5WRSS","created_at":"2026-05-18T12:30:29Z"},{"alias_kind":"pith_short_16","alias_value":"LLPYMHS5WRSSKM5M","created_at":"2026-05-18T12:30:29Z"},{"alias_kind":"pith_short_8","alias_value":"LLPYMHS5","created_at":"2026-05-18T12:30:29Z"}],"graph_snapshots":[{"event_id":"sha256:8bdb9971e3c08994f1dfb2a7ff288b7865bf7e1e8595ec92f6a49f098526f667","target":"graph","created_at":"2026-05-18T01:16:39Z","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 is a progress report on a preliminary feasibility study of experimental setups for preparing and probing a gravitational cat state [1].","authors_text":"B. L. Hu, C. Anastopoulos, M. Derakhshani","cross_cats":["gr-qc","hep-th"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2016-03-13T20:32:03Z","title":"Probing a Gravitational Cat State: Experimental Possibilities"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1603.04430","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":"sha256:26b50e9f6a0717bc632893389a196ea2abbb97ac50f732d96547abeae16184e0","target":"record","created_at":"2026-05-18T01:16:39Z","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":"97d52d2ee049d23c939e5310f4858d76a14a6ac625d194a72c53e47546f81a1b","cross_cats_sorted":["gr-qc","hep-th"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2016-03-13T20:32:03Z","title_canon_sha256":"1e2950b36314edd5de44e8280fd923d5dc6fe7ce5af70151f6b24a4840ffd7a9"},"schema_version":"1.0","source":{"id":"1603.04430","kind":"arxiv","version":1}},"canonical_sha256":"5adf861e5db4652533ac0ab4bdc400028e4744845241d6801aa51d3cbed3c8ab","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"5adf861e5db4652533ac0ab4bdc400028e4744845241d6801aa51d3cbed3c8ab","first_computed_at":"2026-05-18T01:16:39.704628Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:16:39.704628Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"rUp8Qv8/9kNdt9xpkG8UCVGQZKJJn8lH8sNjo69ELHN6ds8KJbrE5iTTbpQLEdg/kkut0TjV8y1bAet91q+WCg==","signature_status":"signed_v1","signed_at":"2026-05-18T01:16:39.705230Z","signed_message":"canonical_sha256_bytes"},"source_id":"1603.04430","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:26b50e9f6a0717bc632893389a196ea2abbb97ac50f732d96547abeae16184e0","sha256:8bdb9971e3c08994f1dfb2a7ff288b7865bf7e1e8595ec92f6a49f098526f667"],"state_sha256":"deacdf68ebafc2cd49fb2978daf5e405a828a4d2f62f95cfb7d2ea9b502815af"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Je1WooNOORPwZcVwgDyR8Gd0tEpBfYD+cQ+KHPy9RRsnaK0MC/9wUfzwaCvKAMucTEnSMNnVqNTQT/9C0FbUDw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-01T17:54:19.772257Z","bundle_sha256":"a2676e0d4ee8062842f044bc4be9ae2ae5774d6170d98c4dc3cbfb1a04e5f555"}}