{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:QIVLPJFSI5UU6HKVHIT2RZGXNU","short_pith_number":"pith:QIVLPJFS","canonical_record":{"source":{"id":"1807.01707","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2018-07-04T18:00:01Z","cross_cats_sorted":["astro-ph.CO"],"title_canon_sha256":"96565e3e39a1c833ada9c4cda817961b9e24a9bbaab84cccefff612876d7b085","abstract_canon_sha256":"c931b4c2aad30b826cebbf6b4c13e43758c6cf5834288855c147cb99081ea6d6"},"schema_version":"1.0"},"canonical_sha256":"822ab7a4b247694f1d553a27a8e4d76d21caf724aeafc4dc21a1d24a19beec07","source":{"kind":"arxiv","id":"1807.01707","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1807.01707","created_at":"2026-05-17T23:50:13Z"},{"alias_kind":"arxiv_version","alias_value":"1807.01707v2","created_at":"2026-05-17T23:50:13Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1807.01707","created_at":"2026-05-17T23:50:13Z"},{"alias_kind":"pith_short_12","alias_value":"QIVLPJFSI5UU","created_at":"2026-05-18T12:32:46Z"},{"alias_kind":"pith_short_16","alias_value":"QIVLPJFSI5UU6HKV","created_at":"2026-05-18T12:32:46Z"},{"alias_kind":"pith_short_8","alias_value":"QIVLPJFS","created_at":"2026-05-18T12:32:46Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:QIVLPJFSI5UU6HKVHIT2RZGXNU","target":"record","payload":{"canonical_record":{"source":{"id":"1807.01707","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2018-07-04T18:00:01Z","cross_cats_sorted":["astro-ph.CO"],"title_canon_sha256":"96565e3e39a1c833ada9c4cda817961b9e24a9bbaab84cccefff612876d7b085","abstract_canon_sha256":"c931b4c2aad30b826cebbf6b4c13e43758c6cf5834288855c147cb99081ea6d6"},"schema_version":"1.0"},"canonical_sha256":"822ab7a4b247694f1d553a27a8e4d76d21caf724aeafc4dc21a1d24a19beec07","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:50:13.208588Z","signature_b64":"emryp/ctV79oN0CF6ojJ6E8fMwF7vR+wQTSereK+qpF2Q0LWgggjvU2By3D8dWRiML5mjPHEL+9Rz7i/Zwk0CA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"822ab7a4b247694f1d553a27a8e4d76d21caf724aeafc4dc21a1d24a19beec07","last_reissued_at":"2026-05-17T23:50:13.207889Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:50:13.207889Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1807.01707","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":"2026-05-17T23:50:13Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"HzZL3PQaUDt3QoNoE7Ea6EzmvqT//4NQ6gQwc3qJvsSDPqhxnbV07rRz3yt7TdxE9mBDhXMOfiRy0qqCl0T3BQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-21T14:33:44.545099Z"},"content_sha256":"d9b64972c44b902ba2ab13994098916a697219d381dccbcf2e8e42c2e8bf3953","schema_version":"1.0","event_id":"sha256:d9b64972c44b902ba2ab13994098916a697219d381dccbcf2e8e42c2e8bf3953"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:QIVLPJFSI5UU6HKVHIT2RZGXNU","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Primordial Black Holes from the QCD axion","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.CO"],"primary_cat":"hep-ph","authors_text":"Eduard Masso, Fabrizio Rompineve, Francesc Ferrer, Giuliano Panico, Oriol Pujolas","submitted_at":"2018-07-04T18:00:01Z","abstract_excerpt":"We propose a mechanism to generate Primordial Black Holes (PBHs) which is independent of cosmological inflation and occurs slightly below the QCD phase transition. Our setup relies on the collapse of long-lived string-domain wall networks and is naturally realized in QCD axion models with domain wall number $N_{DW}>1$ and Peccei-Quinn symmetry broken after inflation. In our framework, dark matter is mostly composed of axions in the meV mass range along with a small fraction, $\\Omega_{\\text{PBH}} \\gtrsim 10^{-6} \\Omega_{\\text{CDM}} $ of heavy $M \\sim 10^4-10^7 M_\\odot$ PBHs. The latter could pl"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1807.01707","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":""},"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":"2026-05-17T23:50:13Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"9mmbuzvF+sMawpoLXRTWokmWBW9c6/jnkhk9wqNc5MPVEEdbdG+AwsvwkR3gHwDwCOaYkCxbb8c0uK1adFn8Bw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-21T14:33:44.545626Z"},"content_sha256":"69faa86739768e27d4c6f4611457b1b60b37a5f86a2efd67c44fc41e467eb473","schema_version":"1.0","event_id":"sha256:69faa86739768e27d4c6f4611457b1b60b37a5f86a2efd67c44fc41e467eb473"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/QIVLPJFSI5UU6HKVHIT2RZGXNU/bundle.json","state_url":"https://pith.science/pith/QIVLPJFSI5UU6HKVHIT2RZGXNU/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/QIVLPJFSI5UU6HKVHIT2RZGXNU/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":"2026-05-21T14:33:44Z","links":{"resolver":"https://pith.science/pith/QIVLPJFSI5UU6HKVHIT2RZGXNU","bundle":"https://pith.science/pith/QIVLPJFSI5UU6HKVHIT2RZGXNU/bundle.json","state":"https://pith.science/pith/QIVLPJFSI5UU6HKVHIT2RZGXNU/state.json","well_known_bundle":"https://pith.science/.well-known/pith/QIVLPJFSI5UU6HKVHIT2RZGXNU/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:QIVLPJFSI5UU6HKVHIT2RZGXNU","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":"c931b4c2aad30b826cebbf6b4c13e43758c6cf5834288855c147cb99081ea6d6","cross_cats_sorted":["astro-ph.CO"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2018-07-04T18:00:01Z","title_canon_sha256":"96565e3e39a1c833ada9c4cda817961b9e24a9bbaab84cccefff612876d7b085"},"schema_version":"1.0","source":{"id":"1807.01707","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1807.01707","created_at":"2026-05-17T23:50:13Z"},{"alias_kind":"arxiv_version","alias_value":"1807.01707v2","created_at":"2026-05-17T23:50:13Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1807.01707","created_at":"2026-05-17T23:50:13Z"},{"alias_kind":"pith_short_12","alias_value":"QIVLPJFSI5UU","created_at":"2026-05-18T12:32:46Z"},{"alias_kind":"pith_short_16","alias_value":"QIVLPJFSI5UU6HKV","created_at":"2026-05-18T12:32:46Z"},{"alias_kind":"pith_short_8","alias_value":"QIVLPJFS","created_at":"2026-05-18T12:32:46Z"}],"graph_snapshots":[{"event_id":"sha256:69faa86739768e27d4c6f4611457b1b60b37a5f86a2efd67c44fc41e467eb473","target":"graph","created_at":"2026-05-17T23:50:13Z","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":"We propose a mechanism to generate Primordial Black Holes (PBHs) which is independent of cosmological inflation and occurs slightly below the QCD phase transition. Our setup relies on the collapse of long-lived string-domain wall networks and is naturally realized in QCD axion models with domain wall number $N_{DW}>1$ and Peccei-Quinn symmetry broken after inflation. In our framework, dark matter is mostly composed of axions in the meV mass range along with a small fraction, $\\Omega_{\\text{PBH}} \\gtrsim 10^{-6} \\Omega_{\\text{CDM}} $ of heavy $M \\sim 10^4-10^7 M_\\odot$ PBHs. The latter could pl","authors_text":"Eduard Masso, Fabrizio Rompineve, Francesc Ferrer, Giuliano Panico, Oriol Pujolas","cross_cats":["astro-ph.CO"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2018-07-04T18:00:01Z","title":"Primordial Black Holes from the QCD axion"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1807.01707","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:d9b64972c44b902ba2ab13994098916a697219d381dccbcf2e8e42c2e8bf3953","target":"record","created_at":"2026-05-17T23:50:13Z","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":"c931b4c2aad30b826cebbf6b4c13e43758c6cf5834288855c147cb99081ea6d6","cross_cats_sorted":["astro-ph.CO"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2018-07-04T18:00:01Z","title_canon_sha256":"96565e3e39a1c833ada9c4cda817961b9e24a9bbaab84cccefff612876d7b085"},"schema_version":"1.0","source":{"id":"1807.01707","kind":"arxiv","version":2}},"canonical_sha256":"822ab7a4b247694f1d553a27a8e4d76d21caf724aeafc4dc21a1d24a19beec07","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"822ab7a4b247694f1d553a27a8e4d76d21caf724aeafc4dc21a1d24a19beec07","first_computed_at":"2026-05-17T23:50:13.207889Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:50:13.207889Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"emryp/ctV79oN0CF6ojJ6E8fMwF7vR+wQTSereK+qpF2Q0LWgggjvU2By3D8dWRiML5mjPHEL+9Rz7i/Zwk0CA==","signature_status":"signed_v1","signed_at":"2026-05-17T23:50:13.208588Z","signed_message":"canonical_sha256_bytes"},"source_id":"1807.01707","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:d9b64972c44b902ba2ab13994098916a697219d381dccbcf2e8e42c2e8bf3953","sha256:69faa86739768e27d4c6f4611457b1b60b37a5f86a2efd67c44fc41e467eb473"],"state_sha256":"7a30f8e9d1034efe9d8a80dfacd831d2e456ec21f69913d0c589fdd83e86cb9c"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"nivQ2Xra7xDp+z+7e+InhxavHDTdfSUOFGfOOt/UwMw4Yk+mZagVdm/N/0hZ6rF728AokaNrzk4iv+iuzgKjAA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-21T14:33:44.548551Z","bundle_sha256":"1823f61ceccb56ba3a953cf1631dd4c7c116d79290b8c9b00fa2f2e81c1f894b"}}