{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2015:IPQAGCBAEKJE3GP7ZHDRCPJEBY","short_pith_number":"pith:IPQAGCBA","canonical_record":{"source":{"id":"1505.01291","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2015-05-06T09:28:47Z","cross_cats_sorted":[],"title_canon_sha256":"6825e46b312c042248e900b26511d7f4ef8e487512913dd656f582c2a1bab869","abstract_canon_sha256":"3d99d6a37337bd928de082e2143d9a4ef2dda318121d5c5a9c3cd7c919c30630"},"schema_version":"1.0"},"canonical_sha256":"43e003082022924d99ffc9c7113d240e0a0097b7c9de4b5a84b94707581a1bf2","source":{"kind":"arxiv","id":"1505.01291","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1505.01291","created_at":"2026-05-18T01:25:00Z"},{"alias_kind":"arxiv_version","alias_value":"1505.01291v1","created_at":"2026-05-18T01:25:00Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1505.01291","created_at":"2026-05-18T01:25:00Z"},{"alias_kind":"pith_short_12","alias_value":"IPQAGCBAEKJE","created_at":"2026-05-18T12:29:25Z"},{"alias_kind":"pith_short_16","alias_value":"IPQAGCBAEKJE3GP7","created_at":"2026-05-18T12:29:25Z"},{"alias_kind":"pith_short_8","alias_value":"IPQAGCBA","created_at":"2026-05-18T12:29:25Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2015:IPQAGCBAEKJE3GP7ZHDRCPJEBY","target":"record","payload":{"canonical_record":{"source":{"id":"1505.01291","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2015-05-06T09:28:47Z","cross_cats_sorted":[],"title_canon_sha256":"6825e46b312c042248e900b26511d7f4ef8e487512913dd656f582c2a1bab869","abstract_canon_sha256":"3d99d6a37337bd928de082e2143d9a4ef2dda318121d5c5a9c3cd7c919c30630"},"schema_version":"1.0"},"canonical_sha256":"43e003082022924d99ffc9c7113d240e0a0097b7c9de4b5a84b94707581a1bf2","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:25:00.591596Z","signature_b64":"oLY/Jej0zaNW43LnlOacWJwciEtMXi0n/7Fsm5GBVOOMN0qcqrGGhUSNCtDaS+C1Lss42O+qdyYSfh+d8uZ+AQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"43e003082022924d99ffc9c7113d240e0a0097b7c9de4b5a84b94707581a1bf2","last_reissued_at":"2026-05-18T01:25:00.591013Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:25:00.591013Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1505.01291","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":"2026-05-18T01:25:00Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"4X7XWkoKAHaw/xN9sNeKtUSNpfat169vzuLsA0Sf69qnmdSFWJoHc6DDzro/FKMC5nL29MR1wfUWBggi+027Aw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-24T21:50:33.118510Z"},"content_sha256":"4e9a4eb4591ec7909f2827636e1c7ceff145e0aeae53643e20efab42180e0b61","schema_version":"1.0","event_id":"sha256:4e9a4eb4591ec7909f2827636e1c7ceff145e0aeae53643e20efab42180e0b61"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2015:IPQAGCBAEKJE3GP7ZHDRCPJEBY","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"On the meaning of Painlev\\'e--Gullstrand synchronization","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"gr-qc","authors_text":"Alfred Molina, Xavier Ja\\'en","submitted_at":"2015-05-06T09:28:47Z","abstract_excerpt":"Following on from two recent papers, here we examine the relationship between Newtonian gravitation and general relativity in more depth. This allows us to define a scalar potential which is just the proper time of the vector potential when the latter is interpreted as the geodesic velocity field. The results are closely related to spacetimes that admit Painlev\\'{e}--Gullstrand synchronization."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1505.01291","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":"2026-05-18T01:25:00Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"o3qy/jUVFMi2vWB+IrvIiy0+A+w9k7zqN1bgGAsXwUUW3KmgeSR+5gTt9hW9URo/8c0g6I4bAfi4mLqDamZGDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-24T21:50:33.118858Z"},"content_sha256":"760e91d10eb9faca1eef43506e26722688adb68dfed47832abe655daa8a2e956","schema_version":"1.0","event_id":"sha256:760e91d10eb9faca1eef43506e26722688adb68dfed47832abe655daa8a2e956"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/IPQAGCBAEKJE3GP7ZHDRCPJEBY/bundle.json","state_url":"https://pith.science/pith/IPQAGCBAEKJE3GP7ZHDRCPJEBY/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/IPQAGCBAEKJE3GP7ZHDRCPJEBY/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":"2026-06-24T21:50:33Z","links":{"resolver":"https://pith.science/pith/IPQAGCBAEKJE3GP7ZHDRCPJEBY","bundle":"https://pith.science/pith/IPQAGCBAEKJE3GP7ZHDRCPJEBY/bundle.json","state":"https://pith.science/pith/IPQAGCBAEKJE3GP7ZHDRCPJEBY/state.json","well_known_bundle":"https://pith.science/.well-known/pith/IPQAGCBAEKJE3GP7ZHDRCPJEBY/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:IPQAGCBAEKJE3GP7ZHDRCPJEBY","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":"3d99d6a37337bd928de082e2143d9a4ef2dda318121d5c5a9c3cd7c919c30630","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2015-05-06T09:28:47Z","title_canon_sha256":"6825e46b312c042248e900b26511d7f4ef8e487512913dd656f582c2a1bab869"},"schema_version":"1.0","source":{"id":"1505.01291","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1505.01291","created_at":"2026-05-18T01:25:00Z"},{"alias_kind":"arxiv_version","alias_value":"1505.01291v1","created_at":"2026-05-18T01:25:00Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1505.01291","created_at":"2026-05-18T01:25:00Z"},{"alias_kind":"pith_short_12","alias_value":"IPQAGCBAEKJE","created_at":"2026-05-18T12:29:25Z"},{"alias_kind":"pith_short_16","alias_value":"IPQAGCBAEKJE3GP7","created_at":"2026-05-18T12:29:25Z"},{"alias_kind":"pith_short_8","alias_value":"IPQAGCBA","created_at":"2026-05-18T12:29:25Z"}],"graph_snapshots":[{"event_id":"sha256:760e91d10eb9faca1eef43506e26722688adb68dfed47832abe655daa8a2e956","target":"graph","created_at":"2026-05-18T01:25:00Z","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":"Following on from two recent papers, here we examine the relationship between Newtonian gravitation and general relativity in more depth. This allows us to define a scalar potential which is just the proper time of the vector potential when the latter is interpreted as the geodesic velocity field. The results are closely related to spacetimes that admit Painlev\\'{e}--Gullstrand synchronization.","authors_text":"Alfred Molina, Xavier Ja\\'en","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2015-05-06T09:28:47Z","title":"On the meaning of Painlev\\'e--Gullstrand synchronization"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1505.01291","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":"sha256:4e9a4eb4591ec7909f2827636e1c7ceff145e0aeae53643e20efab42180e0b61","target":"record","created_at":"2026-05-18T01:25:00Z","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":"3d99d6a37337bd928de082e2143d9a4ef2dda318121d5c5a9c3cd7c919c30630","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2015-05-06T09:28:47Z","title_canon_sha256":"6825e46b312c042248e900b26511d7f4ef8e487512913dd656f582c2a1bab869"},"schema_version":"1.0","source":{"id":"1505.01291","kind":"arxiv","version":1}},"canonical_sha256":"43e003082022924d99ffc9c7113d240e0a0097b7c9de4b5a84b94707581a1bf2","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"43e003082022924d99ffc9c7113d240e0a0097b7c9de4b5a84b94707581a1bf2","first_computed_at":"2026-05-18T01:25:00.591013Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:25:00.591013Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"oLY/Jej0zaNW43LnlOacWJwciEtMXi0n/7Fsm5GBVOOMN0qcqrGGhUSNCtDaS+C1Lss42O+qdyYSfh+d8uZ+AQ==","signature_status":"signed_v1","signed_at":"2026-05-18T01:25:00.591596Z","signed_message":"canonical_sha256_bytes"},"source_id":"1505.01291","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:4e9a4eb4591ec7909f2827636e1c7ceff145e0aeae53643e20efab42180e0b61","sha256:760e91d10eb9faca1eef43506e26722688adb68dfed47832abe655daa8a2e956"],"state_sha256":"c2e2779ac85cdf7a473fc027360f0255a0e481d09ef47b1b5ed8d245e8870f68"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"fxRIZSl5tH0BiNYv2nXc1S3F7ux9JZmSJnFbKZiCd1Vc2scd9BllONpcCLyI06zL5RNBcWLmVrC8UIHjtcWoAA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-24T21:50:33.120759Z","bundle_sha256":"1aabde2fd5596df11016a29f39575a09f64a268cbc628127f410a857bf635546"}}