{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2025:6ZWFOEVD47WY4AGWZX5LT7WAS6","short_pith_number":"pith:6ZWFOEVD","canonical_record":{"source":{"id":"2505.00366","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2025-05-01T07:37:06Z","cross_cats_sorted":[],"title_canon_sha256":"39bf1177ea53d841bc033cafce0266e77e3cf76ca643f9eb29e210c854135f89","abstract_canon_sha256":"dcd8a9c98565d146a81f587dfbd1acb118915f6bd288390d8d1d91b8a56fddc1"},"schema_version":"1.0"},"canonical_sha256":"f66c5712a3e7ed8e00d6cdfab9fec09786479fbe98226bc1c3b66e2e517c19dc","source":{"kind":"arxiv","id":"2505.00366","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2505.00366","created_at":"2026-07-05T11:18:21Z"},{"alias_kind":"arxiv_version","alias_value":"2505.00366v1","created_at":"2026-07-05T11:18:21Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2505.00366","created_at":"2026-07-05T11:18:21Z"},{"alias_kind":"pith_short_12","alias_value":"6ZWFOEVD47WY","created_at":"2026-07-05T11:18:21Z"},{"alias_kind":"pith_short_16","alias_value":"6ZWFOEVD47WY4AGW","created_at":"2026-07-05T11:18:21Z"},{"alias_kind":"pith_short_8","alias_value":"6ZWFOEVD","created_at":"2026-07-05T11:18:21Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2025:6ZWFOEVD47WY4AGWZX5LT7WAS6","target":"record","payload":{"canonical_record":{"source":{"id":"2505.00366","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2025-05-01T07:37:06Z","cross_cats_sorted":[],"title_canon_sha256":"39bf1177ea53d841bc033cafce0266e77e3cf76ca643f9eb29e210c854135f89","abstract_canon_sha256":"dcd8a9c98565d146a81f587dfbd1acb118915f6bd288390d8d1d91b8a56fddc1"},"schema_version":"1.0"},"canonical_sha256":"f66c5712a3e7ed8e00d6cdfab9fec09786479fbe98226bc1c3b66e2e517c19dc","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T11:18:21.404618Z","signature_b64":"/gWjr7lV5wLk3p9LRUffTaXi1qOwXwTYvj3F6NSNba3PVTD0f1iSpe9baLVhTFQqs17sBIeM4s+iCi73Y0FhDQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"f66c5712a3e7ed8e00d6cdfab9fec09786479fbe98226bc1c3b66e2e517c19dc","last_reissued_at":"2026-07-05T11:18:21.404131Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T11:18:21.404131Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2505.00366","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":"2026-07-05T11:18:21Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"sK5HswRmO7qlRRQEAgTTfsvqKB99WFvupM5OWT4Bur1DTN6X4yd8y41DqaRKCtPzc5a4JCuAHYnKYlZ4o9+KDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-06T00:46:28.624347Z"},"content_sha256":"401a85a95f3ee3b300fd99ad98f6819c0e0967d01310baa5fe8b4d1ec4d37126","schema_version":"1.0","event_id":"sha256:401a85a95f3ee3b300fd99ad98f6819c0e0967d01310baa5fe8b4d1ec4d37126"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2025:6ZWFOEVD47WY4AGWZX5LT7WAS6","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Primordial black hole formation from a type II perturbation in the absence and presence of pressure","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"gr-qc","authors_text":"Albert Escriv\\`a, Chul-Moon Yoo, Daiki Saito, Koichiro Uehara, Tomohiro Harada","submitted_at":"2025-05-01T07:37:06Z","abstract_excerpt":"We investigate primordial black holes (PBHs) formed from extremely large amplitudes of primordial curvature fluctuations, classified as type II. Type II fluctuations differ from type I by the presence of a stationary point on the initial time slice, when we see the areal radius as a function of the radial coordinate. Starting from these type II perturbations to form black holes, the nonlinear evolution governed by the Einstein equations generally results in two distinct types, A and B, of horizon configurations, respectively characterized by the absence and presence of a bifurcating trapping h"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2505.00366","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/2505.00366/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":"2026-07-05T11:18:21Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"djtiwsD1JCpVF8LmfXeVV61fruF6VwAUM0IshEr8J2TtjWDJC1D6DEVfqVdF45vTmVoUHQTHWpnJZ84+6+EHAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-06T00:46:28.624869Z"},"content_sha256":"476548c73831eb52f150132d0ac8d32ccc7e27f5c19332c5f26107bed7c33a8e","schema_version":"1.0","event_id":"sha256:476548c73831eb52f150132d0ac8d32ccc7e27f5c19332c5f26107bed7c33a8e"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/6ZWFOEVD47WY4AGWZX5LT7WAS6/bundle.json","state_url":"https://pith.science/pith/6ZWFOEVD47WY4AGWZX5LT7WAS6/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/6ZWFOEVD47WY4AGWZX5LT7WAS6/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":"2026-08-06T00:46:28Z","links":{"resolver":"https://pith.science/pith/6ZWFOEVD47WY4AGWZX5LT7WAS6","bundle":"https://pith.science/pith/6ZWFOEVD47WY4AGWZX5LT7WAS6/bundle.json","state":"https://pith.science/pith/6ZWFOEVD47WY4AGWZX5LT7WAS6/state.json","well_known_bundle":"https://pith.science/.well-known/pith/6ZWFOEVD47WY4AGWZX5LT7WAS6/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2025:6ZWFOEVD47WY4AGWZX5LT7WAS6","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":"dcd8a9c98565d146a81f587dfbd1acb118915f6bd288390d8d1d91b8a56fddc1","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2025-05-01T07:37:06Z","title_canon_sha256":"39bf1177ea53d841bc033cafce0266e77e3cf76ca643f9eb29e210c854135f89"},"schema_version":"1.0","source":{"id":"2505.00366","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2505.00366","created_at":"2026-07-05T11:18:21Z"},{"alias_kind":"arxiv_version","alias_value":"2505.00366v1","created_at":"2026-07-05T11:18:21Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2505.00366","created_at":"2026-07-05T11:18:21Z"},{"alias_kind":"pith_short_12","alias_value":"6ZWFOEVD47WY","created_at":"2026-07-05T11:18:21Z"},{"alias_kind":"pith_short_16","alias_value":"6ZWFOEVD47WY4AGW","created_at":"2026-07-05T11:18:21Z"},{"alias_kind":"pith_short_8","alias_value":"6ZWFOEVD","created_at":"2026-07-05T11:18:21Z"}],"graph_snapshots":[{"event_id":"sha256:476548c73831eb52f150132d0ac8d32ccc7e27f5c19332c5f26107bed7c33a8e","target":"graph","created_at":"2026-07-05T11:18:21Z","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/2505.00366/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We investigate primordial black holes (PBHs) formed from extremely large amplitudes of primordial curvature fluctuations, classified as type II. Type II fluctuations differ from type I by the presence of a stationary point on the initial time slice, when we see the areal radius as a function of the radial coordinate. Starting from these type II perturbations to form black holes, the nonlinear evolution governed by the Einstein equations generally results in two distinct types, A and B, of horizon configurations, respectively characterized by the absence and presence of a bifurcating trapping h","authors_text":"Albert Escriv\\`a, Chul-Moon Yoo, Daiki Saito, Koichiro Uehara, Tomohiro Harada","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2025-05-01T07:37:06Z","title":"Primordial black hole formation from a type II perturbation in the absence and presence of pressure"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2505.00366","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":"sha256:401a85a95f3ee3b300fd99ad98f6819c0e0967d01310baa5fe8b4d1ec4d37126","target":"record","created_at":"2026-07-05T11:18:21Z","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":"dcd8a9c98565d146a81f587dfbd1acb118915f6bd288390d8d1d91b8a56fddc1","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2025-05-01T07:37:06Z","title_canon_sha256":"39bf1177ea53d841bc033cafce0266e77e3cf76ca643f9eb29e210c854135f89"},"schema_version":"1.0","source":{"id":"2505.00366","kind":"arxiv","version":1}},"canonical_sha256":"f66c5712a3e7ed8e00d6cdfab9fec09786479fbe98226bc1c3b66e2e517c19dc","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"f66c5712a3e7ed8e00d6cdfab9fec09786479fbe98226bc1c3b66e2e517c19dc","first_computed_at":"2026-07-05T11:18:21.404131Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T11:18:21.404131Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"/gWjr7lV5wLk3p9LRUffTaXi1qOwXwTYvj3F6NSNba3PVTD0f1iSpe9baLVhTFQqs17sBIeM4s+iCi73Y0FhDQ==","signature_status":"signed_v1","signed_at":"2026-07-05T11:18:21.404618Z","signed_message":"canonical_sha256_bytes"},"source_id":"2505.00366","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:401a85a95f3ee3b300fd99ad98f6819c0e0967d01310baa5fe8b4d1ec4d37126","sha256:476548c73831eb52f150132d0ac8d32ccc7e27f5c19332c5f26107bed7c33a8e"],"state_sha256":"955af3b3dcb2e1df55b5eb2a5c0d15e9b23f04ede2b2da9ded081e3102b36e22"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"AsYDFEM8/Es3vbKcoB0eFor8W84GuwqOYY1PkyJiCpr07Tp4uyK+KoLFhjFCaIbW2m6k8BboLgTsXlJiuqKPDA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-06T00:46:28.631492Z","bundle_sha256":"384e9f4ea23398c2c065d17f6d4e456b7c87abd1a6b3da5637f8fddc37474533"}}