{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2007:CPTVNDYZBWN5TKIVLHZ2ZD6776","short_pith_number":"pith:CPTVNDYZ","canonical_record":{"source":{"id":"0711.4416","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"gr-qc","submitted_at":"2007-11-28T03:56:46Z","cross_cats_sorted":[],"title_canon_sha256":"bbc75b07cfbb7a8c702954777899626d893ed660fb5c837a3fa5ee186e9a87d6","abstract_canon_sha256":"0ff567ed23d1b36646317270e21a894b90aca4ebe9797963c1cb806eafa9ad2b"},"schema_version":"1.0"},"canonical_sha256":"13e7568f190d9bd9a91559f3ac8fdfff8e5873dbd82b25832c7c8c9802eb7d57","source":{"kind":"arxiv","id":"0711.4416","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0711.4416","created_at":"2026-07-04T15:05:54Z"},{"alias_kind":"arxiv_version","alias_value":"0711.4416v1","created_at":"2026-07-04T15:05:54Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0711.4416","created_at":"2026-07-04T15:05:54Z"},{"alias_kind":"pith_short_12","alias_value":"CPTVNDYZBWN5","created_at":"2026-07-04T15:05:54Z"},{"alias_kind":"pith_short_16","alias_value":"CPTVNDYZBWN5TKIV","created_at":"2026-07-04T15:05:54Z"},{"alias_kind":"pith_short_8","alias_value":"CPTVNDYZ","created_at":"2026-07-04T15:05:54Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2007:CPTVNDYZBWN5TKIVLHZ2ZD6776","target":"record","payload":{"canonical_record":{"source":{"id":"0711.4416","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"gr-qc","submitted_at":"2007-11-28T03:56:46Z","cross_cats_sorted":[],"title_canon_sha256":"bbc75b07cfbb7a8c702954777899626d893ed660fb5c837a3fa5ee186e9a87d6","abstract_canon_sha256":"0ff567ed23d1b36646317270e21a894b90aca4ebe9797963c1cb806eafa9ad2b"},"schema_version":"1.0"},"canonical_sha256":"13e7568f190d9bd9a91559f3ac8fdfff8e5873dbd82b25832c7c8c9802eb7d57","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-04T15:05:54.589561Z","signature_b64":"156Ka2u48pNthmwjS7JkaDw4oNhs0D2eXZxcjHVvOWK21wf4Fp6uc9KEkmQM219vcRUOGB2HILX+5WjwjuehBw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"13e7568f190d9bd9a91559f3ac8fdfff8e5873dbd82b25832c7c8c9802eb7d57","last_reissued_at":"2026-07-04T15:05:54.589202Z","signature_status":"signed_v1","first_computed_at":"2026-07-04T15:05:54.589202Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"0711.4416","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":"2026-07-04T15:05:54Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"NXC0ozx1AmP5VQqICj8CdwSwuxEN7LM3sdDAY74G7So5eVpBY3qfooo3MZ4OGKESXe0v2soZ8ufZsBKEjW40AA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-06T06:19:27.165954Z"},"content_sha256":"87c5b239fa3eedbf470ae80237ca44605eb53e22cdf6c20f50ee9bac9b21e666","schema_version":"1.0","event_id":"sha256:87c5b239fa3eedbf470ae80237ca44605eb53e22cdf6c20f50ee9bac9b21e666"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2007:CPTVNDYZBWN5TKIVLHZ2ZD6776","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Emergent spacetimes","license":"","headline":"","cross_cats":[],"primary_cat":"gr-qc","authors_text":"Silke Weinfurtner","submitted_at":"2007-11-28T03:56:46Z","abstract_excerpt":"We discuss the possibility that spacetime geometry may be an emergent phenomenon. This idea has been motivated by the Analogue Gravity programme. These are systems where the kinematics of small perturbations are dominated by an effective gravitational field. In these models there is no obvious connection between the \"gravitational\" field tensor and the Einstein equations, as the emergent spacetime geometry arises as a consequence of linearising around some classical field. After a brief introduction on this topic, we present our recent contributions to the field."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0711.4416","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/0711.4416/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":"2026-07-04T15:05:54Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"9v4heq3vMhSgRbgz9U/gjBK6mktEMDodAWcVYEDmPMsuHja6VMdqQSaYSsRGaE3/umuia57DCYhaAjOyVsXkAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-06T06:19:27.166507Z"},"content_sha256":"c390733a0b8d5094f559bc67e42f3b4cd9a57ff75799b0d9e3122c569cb0fa91","schema_version":"1.0","event_id":"sha256:c390733a0b8d5094f559bc67e42f3b4cd9a57ff75799b0d9e3122c569cb0fa91"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/CPTVNDYZBWN5TKIVLHZ2ZD6776/bundle.json","state_url":"https://pith.science/pith/CPTVNDYZBWN5TKIVLHZ2ZD6776/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/CPTVNDYZBWN5TKIVLHZ2ZD6776/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":"2026-08-06T06:19:27Z","links":{"resolver":"https://pith.science/pith/CPTVNDYZBWN5TKIVLHZ2ZD6776","bundle":"https://pith.science/pith/CPTVNDYZBWN5TKIVLHZ2ZD6776/bundle.json","state":"https://pith.science/pith/CPTVNDYZBWN5TKIVLHZ2ZD6776/state.json","well_known_bundle":"https://pith.science/.well-known/pith/CPTVNDYZBWN5TKIVLHZ2ZD6776/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2007:CPTVNDYZBWN5TKIVLHZ2ZD6776","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":"0ff567ed23d1b36646317270e21a894b90aca4ebe9797963c1cb806eafa9ad2b","cross_cats_sorted":[],"license":"","primary_cat":"gr-qc","submitted_at":"2007-11-28T03:56:46Z","title_canon_sha256":"bbc75b07cfbb7a8c702954777899626d893ed660fb5c837a3fa5ee186e9a87d6"},"schema_version":"1.0","source":{"id":"0711.4416","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0711.4416","created_at":"2026-07-04T15:05:54Z"},{"alias_kind":"arxiv_version","alias_value":"0711.4416v1","created_at":"2026-07-04T15:05:54Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0711.4416","created_at":"2026-07-04T15:05:54Z"},{"alias_kind":"pith_short_12","alias_value":"CPTVNDYZBWN5","created_at":"2026-07-04T15:05:54Z"},{"alias_kind":"pith_short_16","alias_value":"CPTVNDYZBWN5TKIV","created_at":"2026-07-04T15:05:54Z"},{"alias_kind":"pith_short_8","alias_value":"CPTVNDYZ","created_at":"2026-07-04T15:05:54Z"}],"graph_snapshots":[{"event_id":"sha256:c390733a0b8d5094f559bc67e42f3b4cd9a57ff75799b0d9e3122c569cb0fa91","target":"graph","created_at":"2026-07-04T15:05:54Z","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/0711.4416/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We discuss the possibility that spacetime geometry may be an emergent phenomenon. This idea has been motivated by the Analogue Gravity programme. These are systems where the kinematics of small perturbations are dominated by an effective gravitational field. In these models there is no obvious connection between the \"gravitational\" field tensor and the Einstein equations, as the emergent spacetime geometry arises as a consequence of linearising around some classical field. After a brief introduction on this topic, we present our recent contributions to the field.","authors_text":"Silke Weinfurtner","cross_cats":[],"headline":"","license":"","primary_cat":"gr-qc","submitted_at":"2007-11-28T03:56:46Z","title":"Emergent spacetimes"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0711.4416","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":"sha256:87c5b239fa3eedbf470ae80237ca44605eb53e22cdf6c20f50ee9bac9b21e666","target":"record","created_at":"2026-07-04T15:05:54Z","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":"0ff567ed23d1b36646317270e21a894b90aca4ebe9797963c1cb806eafa9ad2b","cross_cats_sorted":[],"license":"","primary_cat":"gr-qc","submitted_at":"2007-11-28T03:56:46Z","title_canon_sha256":"bbc75b07cfbb7a8c702954777899626d893ed660fb5c837a3fa5ee186e9a87d6"},"schema_version":"1.0","source":{"id":"0711.4416","kind":"arxiv","version":1}},"canonical_sha256":"13e7568f190d9bd9a91559f3ac8fdfff8e5873dbd82b25832c7c8c9802eb7d57","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"13e7568f190d9bd9a91559f3ac8fdfff8e5873dbd82b25832c7c8c9802eb7d57","first_computed_at":"2026-07-04T15:05:54.589202Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T15:05:54.589202Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"156Ka2u48pNthmwjS7JkaDw4oNhs0D2eXZxcjHVvOWK21wf4Fp6uc9KEkmQM219vcRUOGB2HILX+5WjwjuehBw==","signature_status":"signed_v1","signed_at":"2026-07-04T15:05:54.589561Z","signed_message":"canonical_sha256_bytes"},"source_id":"0711.4416","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:87c5b239fa3eedbf470ae80237ca44605eb53e22cdf6c20f50ee9bac9b21e666","sha256:c390733a0b8d5094f559bc67e42f3b4cd9a57ff75799b0d9e3122c569cb0fa91"],"state_sha256":"27a11062f2dc44f4447c23b424faf0999909494d5a0c6408f6d49e8f822d7ce9"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"jeoNe8wsrPbJNouYzSK3sv0PDeGJJ66BJDmKJn4TRlro7X8+BuMXQtNMqQA0sWaVoFZfgkwb6AeRpjVWtcT3DQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-06T06:19:27.169817Z","bundle_sha256":"d9630b99aab47293f8f4ff37cd26591893f97022aae9d0f6f74efa47e5135a88"}}