{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2009:V7LGJHJDKBDYTPKV53YAOJS532","short_pith_number":"pith:V7LGJHJD","canonical_record":{"source":{"id":"0908.2806","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2009-08-19T20:00:02Z","cross_cats_sorted":["astro-ph.GA"],"title_canon_sha256":"309a067683066bbc39ca838f6a55ca97dac599216874f491d94d17ae81738b8d","abstract_canon_sha256":"f46ff66d5b36d8c194304c1c5e73ee974eb9758ec4fda67bffafa8a0644ff040"},"schema_version":"1.0"},"canonical_sha256":"afd6649d23504789bd55eef007265dde9343af9edbb37a4822d7bead3260072f","source":{"kind":"arxiv","id":"0908.2806","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0908.2806","created_at":"2026-05-18T02:12:25Z"},{"alias_kind":"arxiv_version","alias_value":"0908.2806v2","created_at":"2026-05-18T02:12:25Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0908.2806","created_at":"2026-05-18T02:12:25Z"},{"alias_kind":"pith_short_12","alias_value":"V7LGJHJDKBDY","created_at":"2026-05-18T12:26:02Z"},{"alias_kind":"pith_short_16","alias_value":"V7LGJHJDKBDYTPKV","created_at":"2026-05-18T12:26:02Z"},{"alias_kind":"pith_short_8","alias_value":"V7LGJHJD","created_at":"2026-05-18T12:26:02Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2009:V7LGJHJDKBDYTPKV53YAOJS532","target":"record","payload":{"canonical_record":{"source":{"id":"0908.2806","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2009-08-19T20:00:02Z","cross_cats_sorted":["astro-ph.GA"],"title_canon_sha256":"309a067683066bbc39ca838f6a55ca97dac599216874f491d94d17ae81738b8d","abstract_canon_sha256":"f46ff66d5b36d8c194304c1c5e73ee974eb9758ec4fda67bffafa8a0644ff040"},"schema_version":"1.0"},"canonical_sha256":"afd6649d23504789bd55eef007265dde9343af9edbb37a4822d7bead3260072f","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:12:25.017720Z","signature_b64":"pQvmdS2rd5IWQpvsxnUvxnbmZjgEJmAeowhBvl2elQA1Ut2JTczvyz0fsgbjncHnMeE0Wj4gtiq3YTDNWri4DA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"afd6649d23504789bd55eef007265dde9343af9edbb37a4822d7bead3260072f","last_reissued_at":"2026-05-18T02:12:25.017002Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:12:25.017002Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"0908.2806","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":"2026-05-18T02:12:25Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"5j9BxrkXkEN8gsvwvsREuFN94nWpwnyBDf83apVxL/p0UOqgZft6FK/fRpHZsfMSfSBhPKMAWPx7c5OaXTKUAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-31T15:24:13.930599Z"},"content_sha256":"3097f9fc560ee90078093a0bffafd5754fb598bd05e73ff179989fe5e88c6f7d","schema_version":"1.0","event_id":"sha256:3097f9fc560ee90078093a0bffafd5754fb598bd05e73ff179989fe5e88c6f7d"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2009:V7LGJHJDKBDYTPKV53YAOJS532","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Turbulence-induced magnetic fields and the structure of Cosmic Ray modified shocks","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.GA"],"primary_cat":"astro-ph.HE","authors_text":"A. Beresnyak, A. Lazarian, T. W. Jones","submitted_at":"2009-08-19T20:00:02Z","abstract_excerpt":"We propose a model for Diffusive Shock Acceleration (DSA) in which stochastic magnetic fields in the shock precursor are generated through purely fluid mechanisms of a so-called small-scale dynamo. This contrasts with previous DSA models that considered magnetic fields amplified through cosmic ray streaming instabilities; i.e., either by way of individual particles resonant scattering in the magnetic fields, or by macroscopic electric currents associated with large-scale cosmic ray streaming. Instead, in our picture, the solenoidal velocity perturbations that are required for the dynamo to wor"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0908.2806","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":"2026-05-18T02:12:25Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"JN3x7o9cX5dsvQOCUzvMk9HlutPwMdsS7jdYnJwkSrvmbD4EyJNKgv+noYBPgA9BlT436ZwAGqjgmCcY3ilhAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-31T15:24:13.931254Z"},"content_sha256":"ac4fa815b0ecc19342044692f62657cc48ee36f592025a475d787205727eac65","schema_version":"1.0","event_id":"sha256:ac4fa815b0ecc19342044692f62657cc48ee36f592025a475d787205727eac65"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/V7LGJHJDKBDYTPKV53YAOJS532/bundle.json","state_url":"https://pith.science/pith/V7LGJHJDKBDYTPKV53YAOJS532/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/V7LGJHJDKBDYTPKV53YAOJS532/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":"2026-05-31T15:24:13Z","links":{"resolver":"https://pith.science/pith/V7LGJHJDKBDYTPKV53YAOJS532","bundle":"https://pith.science/pith/V7LGJHJDKBDYTPKV53YAOJS532/bundle.json","state":"https://pith.science/pith/V7LGJHJDKBDYTPKV53YAOJS532/state.json","well_known_bundle":"https://pith.science/.well-known/pith/V7LGJHJDKBDYTPKV53YAOJS532/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2009:V7LGJHJDKBDYTPKV53YAOJS532","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":"f46ff66d5b36d8c194304c1c5e73ee974eb9758ec4fda67bffafa8a0644ff040","cross_cats_sorted":["astro-ph.GA"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2009-08-19T20:00:02Z","title_canon_sha256":"309a067683066bbc39ca838f6a55ca97dac599216874f491d94d17ae81738b8d"},"schema_version":"1.0","source":{"id":"0908.2806","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0908.2806","created_at":"2026-05-18T02:12:25Z"},{"alias_kind":"arxiv_version","alias_value":"0908.2806v2","created_at":"2026-05-18T02:12:25Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0908.2806","created_at":"2026-05-18T02:12:25Z"},{"alias_kind":"pith_short_12","alias_value":"V7LGJHJDKBDY","created_at":"2026-05-18T12:26:02Z"},{"alias_kind":"pith_short_16","alias_value":"V7LGJHJDKBDYTPKV","created_at":"2026-05-18T12:26:02Z"},{"alias_kind":"pith_short_8","alias_value":"V7LGJHJD","created_at":"2026-05-18T12:26:02Z"}],"graph_snapshots":[{"event_id":"sha256:ac4fa815b0ecc19342044692f62657cc48ee36f592025a475d787205727eac65","target":"graph","created_at":"2026-05-18T02:12:25Z","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 model for Diffusive Shock Acceleration (DSA) in which stochastic magnetic fields in the shock precursor are generated through purely fluid mechanisms of a so-called small-scale dynamo. This contrasts with previous DSA models that considered magnetic fields amplified through cosmic ray streaming instabilities; i.e., either by way of individual particles resonant scattering in the magnetic fields, or by macroscopic electric currents associated with large-scale cosmic ray streaming. Instead, in our picture, the solenoidal velocity perturbations that are required for the dynamo to wor","authors_text":"A. Beresnyak, A. Lazarian, T. W. Jones","cross_cats":["astro-ph.GA"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2009-08-19T20:00:02Z","title":"Turbulence-induced magnetic fields and the structure of Cosmic Ray modified shocks"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0908.2806","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":"sha256:3097f9fc560ee90078093a0bffafd5754fb598bd05e73ff179989fe5e88c6f7d","target":"record","created_at":"2026-05-18T02:12:25Z","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":"f46ff66d5b36d8c194304c1c5e73ee974eb9758ec4fda67bffafa8a0644ff040","cross_cats_sorted":["astro-ph.GA"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2009-08-19T20:00:02Z","title_canon_sha256":"309a067683066bbc39ca838f6a55ca97dac599216874f491d94d17ae81738b8d"},"schema_version":"1.0","source":{"id":"0908.2806","kind":"arxiv","version":2}},"canonical_sha256":"afd6649d23504789bd55eef007265dde9343af9edbb37a4822d7bead3260072f","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"afd6649d23504789bd55eef007265dde9343af9edbb37a4822d7bead3260072f","first_computed_at":"2026-05-18T02:12:25.017002Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:12:25.017002Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"pQvmdS2rd5IWQpvsxnUvxnbmZjgEJmAeowhBvl2elQA1Ut2JTczvyz0fsgbjncHnMeE0Wj4gtiq3YTDNWri4DA==","signature_status":"signed_v1","signed_at":"2026-05-18T02:12:25.017720Z","signed_message":"canonical_sha256_bytes"},"source_id":"0908.2806","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:3097f9fc560ee90078093a0bffafd5754fb598bd05e73ff179989fe5e88c6f7d","sha256:ac4fa815b0ecc19342044692f62657cc48ee36f592025a475d787205727eac65"],"state_sha256":"1e95885c97b2399ea81583f59829104761d6de89a7caff55cff7c461e898fa8f"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"X/fZN3sXb8MFVD7wk0VzYhbpU+6mDa7He6+rWJeSgrQWAHJM29FdJ+Hb7bAqNKdOb78yxW94RliWUfRhqSaXBg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-31T15:24:13.934680Z","bundle_sha256":"53194494a937be9c44fd8239c62600914fe028bd14c817914c394ff9001ed7f6"}}