{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2020:4B7W2NVO6WZSRR4WFNVIRPZRCW","short_pith_number":"pith:4B7W2NVO","canonical_record":{"source":{"id":"2006.06262","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.soft","submitted_at":"2020-06-11T09:10:54Z","cross_cats_sorted":[],"title_canon_sha256":"2827bd3f5911e2443ee6b4e6a5d512ef314897bbca842c1d042e9d4e140377a3","abstract_canon_sha256":"c6786058664922890029748205a01366b8620df7bfc6cd49915515beb9f90204"},"schema_version":"1.0"},"canonical_sha256":"e07f6d36aef5b328c7962b6a88bf31158f927e0c1b795bd81c57f2768e237bc1","source":{"kind":"arxiv","id":"2006.06262","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2006.06262","created_at":"2026-07-05T01:30:51Z"},{"alias_kind":"arxiv_version","alias_value":"2006.06262v1","created_at":"2026-07-05T01:30:51Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2006.06262","created_at":"2026-07-05T01:30:51Z"},{"alias_kind":"pith_short_12","alias_value":"4B7W2NVO6WZS","created_at":"2026-07-05T01:30:51Z"},{"alias_kind":"pith_short_16","alias_value":"4B7W2NVO6WZSRR4W","created_at":"2026-07-05T01:30:51Z"},{"alias_kind":"pith_short_8","alias_value":"4B7W2NVO","created_at":"2026-07-05T01:30:51Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2020:4B7W2NVO6WZSRR4WFNVIRPZRCW","target":"record","payload":{"canonical_record":{"source":{"id":"2006.06262","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.soft","submitted_at":"2020-06-11T09:10:54Z","cross_cats_sorted":[],"title_canon_sha256":"2827bd3f5911e2443ee6b4e6a5d512ef314897bbca842c1d042e9d4e140377a3","abstract_canon_sha256":"c6786058664922890029748205a01366b8620df7bfc6cd49915515beb9f90204"},"schema_version":"1.0"},"canonical_sha256":"e07f6d36aef5b328c7962b6a88bf31158f927e0c1b795bd81c57f2768e237bc1","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T01:30:51.759713Z","signature_b64":"lU9eWABlawUN2IJA3tfpI7ml5oRqcojdI7ZO+wSC90tMOsl1Z+xxQgeQjn+DPWyxorQqXmZ2Wm2Ol2yw2M35BA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"e07f6d36aef5b328c7962b6a88bf31158f927e0c1b795bd81c57f2768e237bc1","last_reissued_at":"2026-07-05T01:30:51.759247Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T01:30:51.759247Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2006.06262","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":"2026-07-05T01:30:51Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"lG6tCfW5q+r2/rZ88r1aUFNobVp0NjPlQtkO1n+raY+mcuI8PnZi3dKVd8ogKec8It2BeLjavOtjjy4/lg4iDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-21T00:33:05.428274Z"},"content_sha256":"3ee29cf56e2f88cc1aa7e5ea9693d7a5ac5a439fda7662ddea131f83ce92d269","schema_version":"1.0","event_id":"sha256:3ee29cf56e2f88cc1aa7e5ea9693d7a5ac5a439fda7662ddea131f83ce92d269"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2020:4B7W2NVO6WZSRR4WFNVIRPZRCW","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Layering of magnetic nanoparticles at amorphous magnetic templates with perpendicular anisotropy","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.soft","authors_text":"Apurve Saini, Brian B. Maranville, Joseph A. Dura, Julie A. Borchers, Katharina Theis-Br\\\"ohl, Kathryn L. Krycka, Max Wolff, Sebastian George","submitted_at":"2020-06-11T09:10:54Z","abstract_excerpt":"We reveal the assembly of monodisperse magnetite nanoparticles of sizes 5 nm, 15 nm and 25 nm from dilute water-based ferrofluids onto an amorphous magnetic template with out-of-plane anisotropy. From neutron reflectometry experiments we extract density profiles and show that the particles self-assemble into layers at the magnetic surface. The layers are extremely stable against cleaning and rinsing of the substrate. The density of the layers is determined by and increases with the remanent magnetic moment of the particles."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2006.06262","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/2006.06262/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":"2026-07-05T01:30:51Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"z0MgKihqpTYTwWg1WbV20lxq0FnCrkh19KXsTYURaNP2fMgvyWeO6OoDC1AxlVg2d3EFdC265TQQQ3iKWw7vBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-21T00:33:05.428912Z"},"content_sha256":"544e758830f4e647282fce2b2c0fcca29c6832caa110dc1aac881b073fb6052d","schema_version":"1.0","event_id":"sha256:544e758830f4e647282fce2b2c0fcca29c6832caa110dc1aac881b073fb6052d"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/4B7W2NVO6WZSRR4WFNVIRPZRCW/bundle.json","state_url":"https://pith.science/pith/4B7W2NVO6WZSRR4WFNVIRPZRCW/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/4B7W2NVO6WZSRR4WFNVIRPZRCW/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":"2026-08-21T00:33:05Z","links":{"resolver":"https://pith.science/pith/4B7W2NVO6WZSRR4WFNVIRPZRCW","bundle":"https://pith.science/pith/4B7W2NVO6WZSRR4WFNVIRPZRCW/bundle.json","state":"https://pith.science/pith/4B7W2NVO6WZSRR4WFNVIRPZRCW/state.json","well_known_bundle":"https://pith.science/.well-known/pith/4B7W2NVO6WZSRR4WFNVIRPZRCW/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2020:4B7W2NVO6WZSRR4WFNVIRPZRCW","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":"c6786058664922890029748205a01366b8620df7bfc6cd49915515beb9f90204","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.soft","submitted_at":"2020-06-11T09:10:54Z","title_canon_sha256":"2827bd3f5911e2443ee6b4e6a5d512ef314897bbca842c1d042e9d4e140377a3"},"schema_version":"1.0","source":{"id":"2006.06262","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2006.06262","created_at":"2026-07-05T01:30:51Z"},{"alias_kind":"arxiv_version","alias_value":"2006.06262v1","created_at":"2026-07-05T01:30:51Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2006.06262","created_at":"2026-07-05T01:30:51Z"},{"alias_kind":"pith_short_12","alias_value":"4B7W2NVO6WZS","created_at":"2026-07-05T01:30:51Z"},{"alias_kind":"pith_short_16","alias_value":"4B7W2NVO6WZSRR4W","created_at":"2026-07-05T01:30:51Z"},{"alias_kind":"pith_short_8","alias_value":"4B7W2NVO","created_at":"2026-07-05T01:30:51Z"}],"graph_snapshots":[{"event_id":"sha256:544e758830f4e647282fce2b2c0fcca29c6832caa110dc1aac881b073fb6052d","target":"graph","created_at":"2026-07-05T01:30:51Z","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/2006.06262/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We reveal the assembly of monodisperse magnetite nanoparticles of sizes 5 nm, 15 nm and 25 nm from dilute water-based ferrofluids onto an amorphous magnetic template with out-of-plane anisotropy. From neutron reflectometry experiments we extract density profiles and show that the particles self-assemble into layers at the magnetic surface. The layers are extremely stable against cleaning and rinsing of the substrate. The density of the layers is determined by and increases with the remanent magnetic moment of the particles.","authors_text":"Apurve Saini, Brian B. Maranville, Joseph A. Dura, Julie A. Borchers, Katharina Theis-Br\\\"ohl, Kathryn L. Krycka, Max Wolff, Sebastian George","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.soft","submitted_at":"2020-06-11T09:10:54Z","title":"Layering of magnetic nanoparticles at amorphous magnetic templates with perpendicular anisotropy"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2006.06262","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":"sha256:3ee29cf56e2f88cc1aa7e5ea9693d7a5ac5a439fda7662ddea131f83ce92d269","target":"record","created_at":"2026-07-05T01:30:51Z","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":"c6786058664922890029748205a01366b8620df7bfc6cd49915515beb9f90204","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.soft","submitted_at":"2020-06-11T09:10:54Z","title_canon_sha256":"2827bd3f5911e2443ee6b4e6a5d512ef314897bbca842c1d042e9d4e140377a3"},"schema_version":"1.0","source":{"id":"2006.06262","kind":"arxiv","version":1}},"canonical_sha256":"e07f6d36aef5b328c7962b6a88bf31158f927e0c1b795bd81c57f2768e237bc1","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"e07f6d36aef5b328c7962b6a88bf31158f927e0c1b795bd81c57f2768e237bc1","first_computed_at":"2026-07-05T01:30:51.759247Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T01:30:51.759247Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"lU9eWABlawUN2IJA3tfpI7ml5oRqcojdI7ZO+wSC90tMOsl1Z+xxQgeQjn+DPWyxorQqXmZ2Wm2Ol2yw2M35BA==","signature_status":"signed_v1","signed_at":"2026-07-05T01:30:51.759713Z","signed_message":"canonical_sha256_bytes"},"source_id":"2006.06262","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:3ee29cf56e2f88cc1aa7e5ea9693d7a5ac5a439fda7662ddea131f83ce92d269","sha256:544e758830f4e647282fce2b2c0fcca29c6832caa110dc1aac881b073fb6052d"],"state_sha256":"ac0e5d337ffad5bee278079b1b394269c9ce8d4383c7a44f214e6641def21651"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"tAdhn31sCxnl4KB3nYxhljnZfw2On8QSJzIm2UCK5/4kLI7INNc9hDJM6QV8CZ0e1d4QADrr6rgHs9aQACQiCg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-21T00:33:05.433760Z","bundle_sha256":"c62466928a6c229ce179f3c6827b04c80b73119172953b8d7e7cc1d444570468"}}