{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2016:HBCURLM7G2SF3C4L2W44EW3WPK","short_pith_number":"pith:HBCURLM7","canonical_record":{"source":{"id":"1608.04372","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2016-08-15T19:29:42Z","cross_cats_sorted":[],"title_canon_sha256":"e57bf8fdb4d5928b049b4dd38617661db956907ddeab7b5cd25c63fdf1fffcef","abstract_canon_sha256":"fc77bdc237b45f7e759f5cf772014bd6de87446465ec3d144a23b124217e47c1"},"schema_version":"1.0"},"canonical_sha256":"384548ad9f36a45d8b8bd5b9c25b767a9b1489bc4fb0d37f7a189432de901ca3","source":{"kind":"arxiv","id":"1608.04372","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1608.04372","created_at":"2026-05-18T00:59:19Z"},{"alias_kind":"arxiv_version","alias_value":"1608.04372v1","created_at":"2026-05-18T00:59:19Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1608.04372","created_at":"2026-05-18T00:59:19Z"},{"alias_kind":"pith_short_12","alias_value":"HBCURLM7G2SF","created_at":"2026-05-18T12:30:19Z"},{"alias_kind":"pith_short_16","alias_value":"HBCURLM7G2SF3C4L","created_at":"2026-05-18T12:30:19Z"},{"alias_kind":"pith_short_8","alias_value":"HBCURLM7","created_at":"2026-05-18T12:30:19Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2016:HBCURLM7G2SF3C4L2W44EW3WPK","target":"record","payload":{"canonical_record":{"source":{"id":"1608.04372","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2016-08-15T19:29:42Z","cross_cats_sorted":[],"title_canon_sha256":"e57bf8fdb4d5928b049b4dd38617661db956907ddeab7b5cd25c63fdf1fffcef","abstract_canon_sha256":"fc77bdc237b45f7e759f5cf772014bd6de87446465ec3d144a23b124217e47c1"},"schema_version":"1.0"},"canonical_sha256":"384548ad9f36a45d8b8bd5b9c25b767a9b1489bc4fb0d37f7a189432de901ca3","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:59:19.805278Z","signature_b64":"6N3n0OSoKFLja7fBa/ir1J4vV8lfyNdqeytZHycvdIzbd7b0jnBOYdZHLNRJj3cDAcu6PGVJ+mAtxTarru64CA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"384548ad9f36a45d8b8bd5b9c25b767a9b1489bc4fb0d37f7a189432de901ca3","last_reissued_at":"2026-05-18T00:59:19.804567Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:59:19.804567Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1608.04372","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":"2026-05-18T00:59:19Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"qzBzQiLR7qg8IbyxHAS6bB1mcNbAbyxN4Yk7qU55RCBGpZU0/p1btb8vFwxKRoY6Vtc9A8g3SMH8DsSRJ2FIAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-30T01:07:05.375971Z"},"content_sha256":"a23e50a0eaea68d659aa6aec20c0b22af6871dc9de1f5cf64838fcd2eef26e76","schema_version":"1.0","event_id":"sha256:a23e50a0eaea68d659aa6aec20c0b22af6871dc9de1f5cf64838fcd2eef26e76"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2016:HBCURLM7G2SF3C4L2W44EW3WPK","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Ponderomotive Acceleration in Coronal Loops","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"B. D. Taylor, J. M. Laming, K. Obenschain, R. B. Dahlburg","submitted_at":"2016-08-15T19:29:42Z","abstract_excerpt":"Ponderomotive acceleration has been asserted to be a cause of the First Ionization Potential (FIP) effect, the by now well known enhancement in abundance by a factor of 3-4 over photospheric values of elements in the solar corona with FIP less than about 10 eV. It is shown here by means of numerical simulations that ponderomotive acceleration occurs in solar coronal loops, with the appropriate magnitude and direction, as a \"byproduct\" of coronal heating. The numerical simulations are performed with the HYPERION code, which solves the fully compressible three-dimensional magnetohydrodynamic equ"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1608.04372","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":""},"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":"2026-05-18T00:59:19Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"pmcj1S6M9JtUY97h4PGkenXE1jbopun4pB/3jU+2lZLdnU9DsHQlt4ztMXjraqwtQU4pV9yxf8iWpbJymLE4Dg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-30T01:07:05.376641Z"},"content_sha256":"48216db316c5fecca2969dae3783312092420f1086d6fbe7398e1b0a9c1dfd22","schema_version":"1.0","event_id":"sha256:48216db316c5fecca2969dae3783312092420f1086d6fbe7398e1b0a9c1dfd22"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/HBCURLM7G2SF3C4L2W44EW3WPK/bundle.json","state_url":"https://pith.science/pith/HBCURLM7G2SF3C4L2W44EW3WPK/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/HBCURLM7G2SF3C4L2W44EW3WPK/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":"2026-05-30T01:07:05Z","links":{"resolver":"https://pith.science/pith/HBCURLM7G2SF3C4L2W44EW3WPK","bundle":"https://pith.science/pith/HBCURLM7G2SF3C4L2W44EW3WPK/bundle.json","state":"https://pith.science/pith/HBCURLM7G2SF3C4L2W44EW3WPK/state.json","well_known_bundle":"https://pith.science/.well-known/pith/HBCURLM7G2SF3C4L2W44EW3WPK/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:HBCURLM7G2SF3C4L2W44EW3WPK","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":"fc77bdc237b45f7e759f5cf772014bd6de87446465ec3d144a23b124217e47c1","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2016-08-15T19:29:42Z","title_canon_sha256":"e57bf8fdb4d5928b049b4dd38617661db956907ddeab7b5cd25c63fdf1fffcef"},"schema_version":"1.0","source":{"id":"1608.04372","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1608.04372","created_at":"2026-05-18T00:59:19Z"},{"alias_kind":"arxiv_version","alias_value":"1608.04372v1","created_at":"2026-05-18T00:59:19Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1608.04372","created_at":"2026-05-18T00:59:19Z"},{"alias_kind":"pith_short_12","alias_value":"HBCURLM7G2SF","created_at":"2026-05-18T12:30:19Z"},{"alias_kind":"pith_short_16","alias_value":"HBCURLM7G2SF3C4L","created_at":"2026-05-18T12:30:19Z"},{"alias_kind":"pith_short_8","alias_value":"HBCURLM7","created_at":"2026-05-18T12:30:19Z"}],"graph_snapshots":[{"event_id":"sha256:48216db316c5fecca2969dae3783312092420f1086d6fbe7398e1b0a9c1dfd22","target":"graph","created_at":"2026-05-18T00:59:19Z","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":"Ponderomotive acceleration has been asserted to be a cause of the First Ionization Potential (FIP) effect, the by now well known enhancement in abundance by a factor of 3-4 over photospheric values of elements in the solar corona with FIP less than about 10 eV. It is shown here by means of numerical simulations that ponderomotive acceleration occurs in solar coronal loops, with the appropriate magnitude and direction, as a \"byproduct\" of coronal heating. The numerical simulations are performed with the HYPERION code, which solves the fully compressible three-dimensional magnetohydrodynamic equ","authors_text":"B. D. Taylor, J. M. Laming, K. Obenschain, R. B. Dahlburg","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2016-08-15T19:29:42Z","title":"Ponderomotive Acceleration in Coronal Loops"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1608.04372","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:a23e50a0eaea68d659aa6aec20c0b22af6871dc9de1f5cf64838fcd2eef26e76","target":"record","created_at":"2026-05-18T00:59:19Z","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":"fc77bdc237b45f7e759f5cf772014bd6de87446465ec3d144a23b124217e47c1","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2016-08-15T19:29:42Z","title_canon_sha256":"e57bf8fdb4d5928b049b4dd38617661db956907ddeab7b5cd25c63fdf1fffcef"},"schema_version":"1.0","source":{"id":"1608.04372","kind":"arxiv","version":1}},"canonical_sha256":"384548ad9f36a45d8b8bd5b9c25b767a9b1489bc4fb0d37f7a189432de901ca3","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"384548ad9f36a45d8b8bd5b9c25b767a9b1489bc4fb0d37f7a189432de901ca3","first_computed_at":"2026-05-18T00:59:19.804567Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:59:19.804567Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"6N3n0OSoKFLja7fBa/ir1J4vV8lfyNdqeytZHycvdIzbd7b0jnBOYdZHLNRJj3cDAcu6PGVJ+mAtxTarru64CA==","signature_status":"signed_v1","signed_at":"2026-05-18T00:59:19.805278Z","signed_message":"canonical_sha256_bytes"},"source_id":"1608.04372","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:a23e50a0eaea68d659aa6aec20c0b22af6871dc9de1f5cf64838fcd2eef26e76","sha256:48216db316c5fecca2969dae3783312092420f1086d6fbe7398e1b0a9c1dfd22"],"state_sha256":"d08222ab2678117002d550c09cb6a921df37254d0b02cbba4ad7f296a5e8d1a9"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"iSmYIn8cO+DHoJZLo6CXPqFxRwYfKfJ20V0myVX6ugvH4mWOxYbnGrFL9hJOsbaUo8nMI7rUlW10//trGKEoDA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-30T01:07:05.380722Z","bundle_sha256":"bacb47dff2ab70f9b4bd0e23c20930ce60d2667cb8c9821499156b1ebba87f89"}}