{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2025:SDZWRQT2IYABQ224WBBMJMEYKU","short_pith_number":"pith:SDZWRQT2","canonical_record":{"source":{"id":"2507.06102","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2025-07-08T15:44:54Z","cross_cats_sorted":["astro-ph.GA"],"title_canon_sha256":"1dbafa6f6f9b80b6bf0eef2357936b59b272d1a05eea711fdece18d153ee1c21","abstract_canon_sha256":"3d287eb0589a62807075fa70698c905b81212dc6ce60e1f3ac52eaee231ef118"},"schema_version":"1.0"},"canonical_sha256":"90f368c27a4600186b5cb042c4b098551723116a16ebfd64055d462efd79eac2","source":{"kind":"arxiv","id":"2507.06102","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2507.06102","created_at":"2026-07-05T11:33:41Z"},{"alias_kind":"arxiv_version","alias_value":"2507.06102v1","created_at":"2026-07-05T11:33:41Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2507.06102","created_at":"2026-07-05T11:33:41Z"},{"alias_kind":"pith_short_12","alias_value":"SDZWRQT2IYAB","created_at":"2026-07-05T11:33:41Z"},{"alias_kind":"pith_short_16","alias_value":"SDZWRQT2IYABQ224","created_at":"2026-07-05T11:33:41Z"},{"alias_kind":"pith_short_8","alias_value":"SDZWRQT2","created_at":"2026-07-05T11:33:41Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2025:SDZWRQT2IYABQ224WBBMJMEYKU","target":"record","payload":{"canonical_record":{"source":{"id":"2507.06102","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2025-07-08T15:44:54Z","cross_cats_sorted":["astro-ph.GA"],"title_canon_sha256":"1dbafa6f6f9b80b6bf0eef2357936b59b272d1a05eea711fdece18d153ee1c21","abstract_canon_sha256":"3d287eb0589a62807075fa70698c905b81212dc6ce60e1f3ac52eaee231ef118"},"schema_version":"1.0"},"canonical_sha256":"90f368c27a4600186b5cb042c4b098551723116a16ebfd64055d462efd79eac2","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T11:33:41.239229Z","signature_b64":"hFEY54aSdEw3NeCcyie+OwmzQ89Coy+mLS022QKK91IBQqmIh7fOOvz1nRWtLiRfsUQR/PNUloRJB77DPf+XCw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"90f368c27a4600186b5cb042c4b098551723116a16ebfd64055d462efd79eac2","last_reissued_at":"2026-07-05T11:33:41.238762Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T11:33:41.238762Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2507.06102","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":"2026-07-05T11:33:41Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"8FNGsdgwzBJmHDbrH5Ft7FODWVc4ePcqq4a+ZaMte1yVJY7lcOBXS3Ae4m6xCfzec2w1LyrararBtO9xEWReAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-20T14:46:50.576536Z"},"content_sha256":"22023bc68e685a1222709da8436331c9f7ae8a34d8f5f4551019aa017e5e4948","schema_version":"1.0","event_id":"sha256:22023bc68e685a1222709da8436331c9f7ae8a34d8f5f4551019aa017e5e4948"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2025:SDZWRQT2IYABQ224WBBMJMEYKU","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Magnetic White Dwarfs in the SDSS 100 pc Sample: Further Evidence of Two Formation Channels","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.GA"],"primary_cat":"astro-ph.SR","authors_text":"Adam Moss, Anthony Burrow, Gracyn Jewett, Marcel A. Ag\\\"ueros, Maria Camisassa, Mukremin Kilic, Pierre Bergeron, Warren R. Brown","submitted_at":"2025-07-08T15:44:54Z","abstract_excerpt":"We conduct a model atmosphere analysis on all magnetic white dwarfs in the SDSS 100 pc sample. We have 163 magnetic targets in this sample, 87 of which are new discoveries, making this the largest volume-limited survey of magnetic white dwarfs to date. We discuss the distribution of multiple parameters, including mass, cooling age, and field strength. We find strong evidence of two populations of magnetic white dwarfs that form through separate mechanisms based on a cluster analysis of these parameters. The young, high mass objects typically have high field strengths which indicate a merger or"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2507.06102","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/2507.06102/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":"2026-07-05T11:33:41Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"TDLxCkB0xMMnfmZ3qu/7r+7JQMfpaa2V6O7IcKkrswaDnKa24M7XDubEacmOYPB+BMlm7WvZoFCaTxq8HfP2Dg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-20T14:46:50.577059Z"},"content_sha256":"e268e84db19e367caeb8420b35e7cab28dcdd862023157a55a2a7ffffcf58317","schema_version":"1.0","event_id":"sha256:e268e84db19e367caeb8420b35e7cab28dcdd862023157a55a2a7ffffcf58317"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/SDZWRQT2IYABQ224WBBMJMEYKU/bundle.json","state_url":"https://pith.science/pith/SDZWRQT2IYABQ224WBBMJMEYKU/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/SDZWRQT2IYABQ224WBBMJMEYKU/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":"2026-08-20T14:46:50Z","links":{"resolver":"https://pith.science/pith/SDZWRQT2IYABQ224WBBMJMEYKU","bundle":"https://pith.science/pith/SDZWRQT2IYABQ224WBBMJMEYKU/bundle.json","state":"https://pith.science/pith/SDZWRQT2IYABQ224WBBMJMEYKU/state.json","well_known_bundle":"https://pith.science/.well-known/pith/SDZWRQT2IYABQ224WBBMJMEYKU/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2025:SDZWRQT2IYABQ224WBBMJMEYKU","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":"3d287eb0589a62807075fa70698c905b81212dc6ce60e1f3ac52eaee231ef118","cross_cats_sorted":["astro-ph.GA"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2025-07-08T15:44:54Z","title_canon_sha256":"1dbafa6f6f9b80b6bf0eef2357936b59b272d1a05eea711fdece18d153ee1c21"},"schema_version":"1.0","source":{"id":"2507.06102","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2507.06102","created_at":"2026-07-05T11:33:41Z"},{"alias_kind":"arxiv_version","alias_value":"2507.06102v1","created_at":"2026-07-05T11:33:41Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2507.06102","created_at":"2026-07-05T11:33:41Z"},{"alias_kind":"pith_short_12","alias_value":"SDZWRQT2IYAB","created_at":"2026-07-05T11:33:41Z"},{"alias_kind":"pith_short_16","alias_value":"SDZWRQT2IYABQ224","created_at":"2026-07-05T11:33:41Z"},{"alias_kind":"pith_short_8","alias_value":"SDZWRQT2","created_at":"2026-07-05T11:33:41Z"}],"graph_snapshots":[{"event_id":"sha256:e268e84db19e367caeb8420b35e7cab28dcdd862023157a55a2a7ffffcf58317","target":"graph","created_at":"2026-07-05T11:33:41Z","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/2507.06102/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We conduct a model atmosphere analysis on all magnetic white dwarfs in the SDSS 100 pc sample. We have 163 magnetic targets in this sample, 87 of which are new discoveries, making this the largest volume-limited survey of magnetic white dwarfs to date. We discuss the distribution of multiple parameters, including mass, cooling age, and field strength. We find strong evidence of two populations of magnetic white dwarfs that form through separate mechanisms based on a cluster analysis of these parameters. The young, high mass objects typically have high field strengths which indicate a merger or","authors_text":"Adam Moss, Anthony Burrow, Gracyn Jewett, Marcel A. Ag\\\"ueros, Maria Camisassa, Mukremin Kilic, Pierre Bergeron, Warren R. Brown","cross_cats":["astro-ph.GA"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2025-07-08T15:44:54Z","title":"Magnetic White Dwarfs in the SDSS 100 pc Sample: Further Evidence of Two Formation Channels"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2507.06102","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":"sha256:22023bc68e685a1222709da8436331c9f7ae8a34d8f5f4551019aa017e5e4948","target":"record","created_at":"2026-07-05T11:33:41Z","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":"3d287eb0589a62807075fa70698c905b81212dc6ce60e1f3ac52eaee231ef118","cross_cats_sorted":["astro-ph.GA"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2025-07-08T15:44:54Z","title_canon_sha256":"1dbafa6f6f9b80b6bf0eef2357936b59b272d1a05eea711fdece18d153ee1c21"},"schema_version":"1.0","source":{"id":"2507.06102","kind":"arxiv","version":1}},"canonical_sha256":"90f368c27a4600186b5cb042c4b098551723116a16ebfd64055d462efd79eac2","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"90f368c27a4600186b5cb042c4b098551723116a16ebfd64055d462efd79eac2","first_computed_at":"2026-07-05T11:33:41.238762Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T11:33:41.238762Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"hFEY54aSdEw3NeCcyie+OwmzQ89Coy+mLS022QKK91IBQqmIh7fOOvz1nRWtLiRfsUQR/PNUloRJB77DPf+XCw==","signature_status":"signed_v1","signed_at":"2026-07-05T11:33:41.239229Z","signed_message":"canonical_sha256_bytes"},"source_id":"2507.06102","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:22023bc68e685a1222709da8436331c9f7ae8a34d8f5f4551019aa017e5e4948","sha256:e268e84db19e367caeb8420b35e7cab28dcdd862023157a55a2a7ffffcf58317"],"state_sha256":"c40bad29acb48461a4c86ff08ef41ca37c3dc46fc577941dd206318bac5a99eb"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"PrkvvckgD06jZDnrAOBRlw414Sp1pFR+Dz6ZBZ1eamfnbzOuiI4WWz/cEeUdVpl4ZXDwgSWUeMRsMQqQZ0wKBA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-20T14:46:50.584377Z","bundle_sha256":"4ff268865f7a6dbd956f8820da15aeecb2a1c7c7bf2746a58edb2ef7f95bd135"}}