{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2021:MHIIDHYIFR4OHPWP75XU5JBO6M","short_pith_number":"pith:MHIIDHYI","canonical_record":{"source":{"id":"2101.08086","kind":"arxiv","version":2},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"quant-ph","submitted_at":"2021-01-20T11:50:12Z","cross_cats_sorted":["gr-qc"],"title_canon_sha256":"6ea30636f2ae9001bef3f6942070bd696090f9595413cebb0f3258c1e4c2f133","abstract_canon_sha256":"88c52df42dca3e59b18c79e7a4dd9eb927b18bfe85fcf00d9c8321ee7ddd3b3d"},"schema_version":"1.0"},"canonical_sha256":"61d0819f082c78e3becfff6f4ea42ef304ea086234de1ff2dd02c5a6129d7167","source":{"kind":"arxiv","id":"2101.08086","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2101.08086","created_at":"2026-07-05T03:34:21Z"},{"alias_kind":"arxiv_version","alias_value":"2101.08086v2","created_at":"2026-07-05T03:34:21Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2101.08086","created_at":"2026-07-05T03:34:21Z"},{"alias_kind":"pith_short_12","alias_value":"MHIIDHYIFR4O","created_at":"2026-07-05T03:34:21Z"},{"alias_kind":"pith_short_16","alias_value":"MHIIDHYIFR4OHPWP","created_at":"2026-07-05T03:34:21Z"},{"alias_kind":"pith_short_8","alias_value":"MHIIDHYI","created_at":"2026-07-05T03:34:21Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2021:MHIIDHYIFR4OHPWP75XU5JBO6M","target":"record","payload":{"canonical_record":{"source":{"id":"2101.08086","kind":"arxiv","version":2},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"quant-ph","submitted_at":"2021-01-20T11:50:12Z","cross_cats_sorted":["gr-qc"],"title_canon_sha256":"6ea30636f2ae9001bef3f6942070bd696090f9595413cebb0f3258c1e4c2f133","abstract_canon_sha256":"88c52df42dca3e59b18c79e7a4dd9eb927b18bfe85fcf00d9c8321ee7ddd3b3d"},"schema_version":"1.0"},"canonical_sha256":"61d0819f082c78e3becfff6f4ea42ef304ea086234de1ff2dd02c5a6129d7167","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T03:34:21.767849Z","signature_b64":"HE9QKZnB85OECS0puE57ERGh7sWlg3ULLeef6r4d3GBeAv1NJsiMbbEgzlGCIybD54cMdoTMLV/gZPBevyfqAw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"61d0819f082c78e3becfff6f4ea42ef304ea086234de1ff2dd02c5a6129d7167","last_reissued_at":"2026-07-05T03:34:21.767386Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T03:34:21.767386Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2101.08086","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":"2026-07-05T03:34:21Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Wy2pCm2xopr7IBY00xQV21JxOIzr/lYCKRIQ+fjcwAjoW5jOKcyxiu2vpA0rUatmA6W2snGbLWa+B32ZFU/bDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-14T14:35:33.674528Z"},"content_sha256":"4fcb9706081bd332d6df58c17c7ac6bc7c776ce643663453dffacf4b44e45429","schema_version":"1.0","event_id":"sha256:4fcb9706081bd332d6df58c17c7ac6bc7c776ce643663453dffacf4b44e45429"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2021:MHIIDHYIFR4OHPWP75XU5JBO6M","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Qudits for Witnessing Quantum Gravity Induced Entanglement of Masses Under Decoherence","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["gr-qc"],"primary_cat":"quant-ph","authors_text":"Anupam Mazumdar, Jules Tilly, Ryan J. Marshman, Sougato Bose","submitted_at":"2021-01-20T11:50:12Z","abstract_excerpt":"Recently a theoretical and an experimental protocol known as quantum gravity induced entanglement of masses (QGEM) has been proposed to test the quantum nature of gravity using two mesoscopic masses each placed in a superposition of two locations. If, after eliminating all non-gravitational interactions between them, the particles become entangled, one can conclude that the gravitational potential is induced via a quantum mediator, i.e. a virtual graviton. In this paper, we examine a range of different experimental set-ups, considering different geometries and the number of spatially superpose"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2101.08086","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2101.08086/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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":"2026-07-05T03:34:21Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"dtLANCuWIV8fZVTSxTGjkhMI6HspVPV2mcHKwBCqIgXhsgvfs8wr7X43a6JSptKInjF1XE0LWQRVMsn5bFqxBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-14T14:35:33.675582Z"},"content_sha256":"9311d5c560418652f061fe4e1eef31563352f1a593153fd189055789600dca39","schema_version":"1.0","event_id":"sha256:9311d5c560418652f061fe4e1eef31563352f1a593153fd189055789600dca39"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/MHIIDHYIFR4OHPWP75XU5JBO6M/bundle.json","state_url":"https://pith.science/pith/MHIIDHYIFR4OHPWP75XU5JBO6M/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/MHIIDHYIFR4OHPWP75XU5JBO6M/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":"2026-08-14T14:35:33Z","links":{"resolver":"https://pith.science/pith/MHIIDHYIFR4OHPWP75XU5JBO6M","bundle":"https://pith.science/pith/MHIIDHYIFR4OHPWP75XU5JBO6M/bundle.json","state":"https://pith.science/pith/MHIIDHYIFR4OHPWP75XU5JBO6M/state.json","well_known_bundle":"https://pith.science/.well-known/pith/MHIIDHYIFR4OHPWP75XU5JBO6M/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2021:MHIIDHYIFR4OHPWP75XU5JBO6M","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":"88c52df42dca3e59b18c79e7a4dd9eb927b18bfe85fcf00d9c8321ee7ddd3b3d","cross_cats_sorted":["gr-qc"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"quant-ph","submitted_at":"2021-01-20T11:50:12Z","title_canon_sha256":"6ea30636f2ae9001bef3f6942070bd696090f9595413cebb0f3258c1e4c2f133"},"schema_version":"1.0","source":{"id":"2101.08086","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2101.08086","created_at":"2026-07-05T03:34:21Z"},{"alias_kind":"arxiv_version","alias_value":"2101.08086v2","created_at":"2026-07-05T03:34:21Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2101.08086","created_at":"2026-07-05T03:34:21Z"},{"alias_kind":"pith_short_12","alias_value":"MHIIDHYIFR4O","created_at":"2026-07-05T03:34:21Z"},{"alias_kind":"pith_short_16","alias_value":"MHIIDHYIFR4OHPWP","created_at":"2026-07-05T03:34:21Z"},{"alias_kind":"pith_short_8","alias_value":"MHIIDHYI","created_at":"2026-07-05T03:34:21Z"}],"graph_snapshots":[{"event_id":"sha256:9311d5c560418652f061fe4e1eef31563352f1a593153fd189055789600dca39","target":"graph","created_at":"2026-07-05T03:34:21Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/2101.08086/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Recently a theoretical and an experimental protocol known as quantum gravity induced entanglement of masses (QGEM) has been proposed to test the quantum nature of gravity using two mesoscopic masses each placed in a superposition of two locations. If, after eliminating all non-gravitational interactions between them, the particles become entangled, one can conclude that the gravitational potential is induced via a quantum mediator, i.e. a virtual graviton. In this paper, we examine a range of different experimental set-ups, considering different geometries and the number of spatially superpose","authors_text":"Anupam Mazumdar, Jules Tilly, Ryan J. Marshman, Sougato Bose","cross_cats":["gr-qc"],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"quant-ph","submitted_at":"2021-01-20T11:50:12Z","title":"Qudits for Witnessing Quantum Gravity Induced Entanglement of Masses Under Decoherence"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2101.08086","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":"sha256:4fcb9706081bd332d6df58c17c7ac6bc7c776ce643663453dffacf4b44e45429","target":"record","created_at":"2026-07-05T03:34:21Z","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":"88c52df42dca3e59b18c79e7a4dd9eb927b18bfe85fcf00d9c8321ee7ddd3b3d","cross_cats_sorted":["gr-qc"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"quant-ph","submitted_at":"2021-01-20T11:50:12Z","title_canon_sha256":"6ea30636f2ae9001bef3f6942070bd696090f9595413cebb0f3258c1e4c2f133"},"schema_version":"1.0","source":{"id":"2101.08086","kind":"arxiv","version":2}},"canonical_sha256":"61d0819f082c78e3becfff6f4ea42ef304ea086234de1ff2dd02c5a6129d7167","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"61d0819f082c78e3becfff6f4ea42ef304ea086234de1ff2dd02c5a6129d7167","first_computed_at":"2026-07-05T03:34:21.767386Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T03:34:21.767386Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"HE9QKZnB85OECS0puE57ERGh7sWlg3ULLeef6r4d3GBeAv1NJsiMbbEgzlGCIybD54cMdoTMLV/gZPBevyfqAw==","signature_status":"signed_v1","signed_at":"2026-07-05T03:34:21.767849Z","signed_message":"canonical_sha256_bytes"},"source_id":"2101.08086","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:4fcb9706081bd332d6df58c17c7ac6bc7c776ce643663453dffacf4b44e45429","sha256:9311d5c560418652f061fe4e1eef31563352f1a593153fd189055789600dca39"],"state_sha256":"3ea8a002d037f8c27fc4722bc19ee367ad4e76960e924410801d2d65d1008449"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ci7jBOD1o/eCDA7fOygjxYU3DK7H7ZZW/s45lWjENfjTMy2GgcyCKp6mZvx8aAJVN1dvw6FQTyoYHUaX0MiLDQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-14T14:35:33.680435Z","bundle_sha256":"65470e4e06661f0b4f378ed604d50c624e151e2edfa171be279ef02dfd608dc9"}}