{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2019:LHLXIR67KKATZE72EJXAWB3S5M","short_pith_number":"pith:LHLXIR67","canonical_record":{"source":{"id":"1909.07129","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2019-09-16T11:27:46Z","cross_cats_sorted":[],"title_canon_sha256":"9e4be8e80add5f093e5ffecf53a5fede4ab30497c54e11e93ffbaf61b16ec4b1","abstract_canon_sha256":"73a0e82daea0dd7de38d2ffe40b748000380e34c2c311ed929ccf3cb144e6417"},"schema_version":"1.0"},"canonical_sha256":"59d77447df52813c93fa226e0b0772eb1a186f83e3cf6881cca7fdb066d32bc4","source":{"kind":"arxiv","id":"1909.07129","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1909.07129","created_at":"2026-07-05T01:01:35Z"},{"alias_kind":"arxiv_version","alias_value":"1909.07129v2","created_at":"2026-07-05T01:01:35Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1909.07129","created_at":"2026-07-05T01:01:35Z"},{"alias_kind":"pith_short_12","alias_value":"LHLXIR67KKAT","created_at":"2026-07-05T01:01:35Z"},{"alias_kind":"pith_short_16","alias_value":"LHLXIR67KKATZE72","created_at":"2026-07-05T01:01:35Z"},{"alias_kind":"pith_short_8","alias_value":"LHLXIR67","created_at":"2026-07-05T01:01:35Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2019:LHLXIR67KKATZE72EJXAWB3S5M","target":"record","payload":{"canonical_record":{"source":{"id":"1909.07129","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2019-09-16T11:27:46Z","cross_cats_sorted":[],"title_canon_sha256":"9e4be8e80add5f093e5ffecf53a5fede4ab30497c54e11e93ffbaf61b16ec4b1","abstract_canon_sha256":"73a0e82daea0dd7de38d2ffe40b748000380e34c2c311ed929ccf3cb144e6417"},"schema_version":"1.0"},"canonical_sha256":"59d77447df52813c93fa226e0b0772eb1a186f83e3cf6881cca7fdb066d32bc4","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T01:01:35.869414Z","signature_b64":"lQNKW85VzmGRDWzWu3cry4zEjRg1pPd1eSISJueGvKv6T+bJ8Z15qnP/CpurquUPXmbup14bPNbIxcVvvwRnBA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"59d77447df52813c93fa226e0b0772eb1a186f83e3cf6881cca7fdb066d32bc4","last_reissued_at":"2026-07-05T01:01:35.869065Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T01:01:35.869065Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1909.07129","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":"2026-07-05T01:01:35Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"vN/BLD+7OV4ITQxDwAhbxLUGOnTGY8f7nqAdF2OL0vJ+J3pqU+t5YRtMhUiMeb0fu0YrPcFkhEXKBPAXMKFNDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-06T15:09:00.002134Z"},"content_sha256":"264ff615e0202eff11c8606f2f6dd805e7bf60dc9e632d606790fea33b0c237a","schema_version":"1.0","event_id":"sha256:264ff615e0202eff11c8606f2f6dd805e7bf60dc9e632d606790fea33b0c237a"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2019:LHLXIR67KKATZE72EJXAWB3S5M","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"A toy model for a baby universe inside a black hole","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"gr-qc","authors_text":"Ahmadjon Abdujabbarov, Cosimo Bambi, Daniele Malafarina, Hrishikesh Chakrabarty","submitted_at":"2019-09-16T11:27:46Z","abstract_excerpt":"We present a dynamical toy model for an expanding universe inside a black hole. The model is built by matching a spherically symmetric collapsing matter cloud to an expanding Friedmann-Robertson-Walker universe through a phase transition that occurs in the quantum-gravity dominated region, here modeled with semi-classical corrections at high density. The matching is performed on a space-like hyper-surface identified by the co-moving time at which quantum-gravity induced effects halt collapse. The purpose of the model is to suggest a possible reconciliation between the observation that black ho"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1909.07129","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/1909.07129/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":"2026-07-05T01:01:35Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"RtHSDueKCsdhjVHm4ujj8zDYrr33HOcgi3u338rFDp8AAlLyrqVc68YdFbuGnjpMA80Xqj03vALK8uQmI4swBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-06T15:09:00.002630Z"},"content_sha256":"ddd08228defedd00d16c070e09db6fe803fdd1b79f0834b8656f18ae71bf3588","schema_version":"1.0","event_id":"sha256:ddd08228defedd00d16c070e09db6fe803fdd1b79f0834b8656f18ae71bf3588"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/LHLXIR67KKATZE72EJXAWB3S5M/bundle.json","state_url":"https://pith.science/pith/LHLXIR67KKATZE72EJXAWB3S5M/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/LHLXIR67KKATZE72EJXAWB3S5M/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":"2026-08-06T15:09:00Z","links":{"resolver":"https://pith.science/pith/LHLXIR67KKATZE72EJXAWB3S5M","bundle":"https://pith.science/pith/LHLXIR67KKATZE72EJXAWB3S5M/bundle.json","state":"https://pith.science/pith/LHLXIR67KKATZE72EJXAWB3S5M/state.json","well_known_bundle":"https://pith.science/.well-known/pith/LHLXIR67KKATZE72EJXAWB3S5M/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:LHLXIR67KKATZE72EJXAWB3S5M","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":"73a0e82daea0dd7de38d2ffe40b748000380e34c2c311ed929ccf3cb144e6417","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2019-09-16T11:27:46Z","title_canon_sha256":"9e4be8e80add5f093e5ffecf53a5fede4ab30497c54e11e93ffbaf61b16ec4b1"},"schema_version":"1.0","source":{"id":"1909.07129","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1909.07129","created_at":"2026-07-05T01:01:35Z"},{"alias_kind":"arxiv_version","alias_value":"1909.07129v2","created_at":"2026-07-05T01:01:35Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1909.07129","created_at":"2026-07-05T01:01:35Z"},{"alias_kind":"pith_short_12","alias_value":"LHLXIR67KKAT","created_at":"2026-07-05T01:01:35Z"},{"alias_kind":"pith_short_16","alias_value":"LHLXIR67KKATZE72","created_at":"2026-07-05T01:01:35Z"},{"alias_kind":"pith_short_8","alias_value":"LHLXIR67","created_at":"2026-07-05T01:01:35Z"}],"graph_snapshots":[{"event_id":"sha256:ddd08228defedd00d16c070e09db6fe803fdd1b79f0834b8656f18ae71bf3588","target":"graph","created_at":"2026-07-05T01:01:35Z","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/1909.07129/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We present a dynamical toy model for an expanding universe inside a black hole. The model is built by matching a spherically symmetric collapsing matter cloud to an expanding Friedmann-Robertson-Walker universe through a phase transition that occurs in the quantum-gravity dominated region, here modeled with semi-classical corrections at high density. The matching is performed on a space-like hyper-surface identified by the co-moving time at which quantum-gravity induced effects halt collapse. The purpose of the model is to suggest a possible reconciliation between the observation that black ho","authors_text":"Ahmadjon Abdujabbarov, Cosimo Bambi, Daniele Malafarina, Hrishikesh Chakrabarty","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2019-09-16T11:27:46Z","title":"A toy model for a baby universe inside a black hole"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1909.07129","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":"sha256:264ff615e0202eff11c8606f2f6dd805e7bf60dc9e632d606790fea33b0c237a","target":"record","created_at":"2026-07-05T01:01:35Z","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":"73a0e82daea0dd7de38d2ffe40b748000380e34c2c311ed929ccf3cb144e6417","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2019-09-16T11:27:46Z","title_canon_sha256":"9e4be8e80add5f093e5ffecf53a5fede4ab30497c54e11e93ffbaf61b16ec4b1"},"schema_version":"1.0","source":{"id":"1909.07129","kind":"arxiv","version":2}},"canonical_sha256":"59d77447df52813c93fa226e0b0772eb1a186f83e3cf6881cca7fdb066d32bc4","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"59d77447df52813c93fa226e0b0772eb1a186f83e3cf6881cca7fdb066d32bc4","first_computed_at":"2026-07-05T01:01:35.869065Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T01:01:35.869065Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"lQNKW85VzmGRDWzWu3cry4zEjRg1pPd1eSISJueGvKv6T+bJ8Z15qnP/CpurquUPXmbup14bPNbIxcVvvwRnBA==","signature_status":"signed_v1","signed_at":"2026-07-05T01:01:35.869414Z","signed_message":"canonical_sha256_bytes"},"source_id":"1909.07129","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:264ff615e0202eff11c8606f2f6dd805e7bf60dc9e632d606790fea33b0c237a","sha256:ddd08228defedd00d16c070e09db6fe803fdd1b79f0834b8656f18ae71bf3588"],"state_sha256":"5e67027c81a4cbb41bf816c347de197e8508312438f5cf8f0f00a79036c26ef9"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"072H+2a2Mbl2NdThdtIH9Kz2F+ftamiRR7zu8KlS3Uh3t0IvjyWZzHPbjFqna8FUXUYuaFdUDGn2BWhBmYRzAg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-06T15:09:00.006985Z","bundle_sha256":"0a0bd524a5034e2c30101d974b730d55527b3ece70bb4afdf010ce539e6467fb"}}