{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2017:QES7F3AGDEMDF73RC3GJFNAXEJ","short_pith_number":"pith:QES7F3AG","canonical_record":{"source":{"id":"1712.05991","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.chem-ph","submitted_at":"2017-12-16T17:14:28Z","cross_cats_sorted":[],"title_canon_sha256":"17882fa09e241aad54ce7eb9eda586a8e78fa45f5e9a8c7082c18f101f1e78e9","abstract_canon_sha256":"d1cf2ea190e25e592068cf74d869546fefea1e47860f1a9812f6a05ee01860ba"},"schema_version":"1.0"},"canonical_sha256":"8125f2ec06191832ff7116cc92b417227ed92ed24e4bcf9a27bf03a5d6a615bd","source":{"kind":"arxiv","id":"1712.05991","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1712.05991","created_at":"2026-05-18T00:27:51Z"},{"alias_kind":"arxiv_version","alias_value":"1712.05991v1","created_at":"2026-05-18T00:27:51Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1712.05991","created_at":"2026-05-18T00:27:51Z"},{"alias_kind":"pith_short_12","alias_value":"QES7F3AGDEMD","created_at":"2026-05-18T12:31:37Z"},{"alias_kind":"pith_short_16","alias_value":"QES7F3AGDEMDF73R","created_at":"2026-05-18T12:31:37Z"},{"alias_kind":"pith_short_8","alias_value":"QES7F3AG","created_at":"2026-05-18T12:31:37Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2017:QES7F3AGDEMDF73RC3GJFNAXEJ","target":"record","payload":{"canonical_record":{"source":{"id":"1712.05991","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.chem-ph","submitted_at":"2017-12-16T17:14:28Z","cross_cats_sorted":[],"title_canon_sha256":"17882fa09e241aad54ce7eb9eda586a8e78fa45f5e9a8c7082c18f101f1e78e9","abstract_canon_sha256":"d1cf2ea190e25e592068cf74d869546fefea1e47860f1a9812f6a05ee01860ba"},"schema_version":"1.0"},"canonical_sha256":"8125f2ec06191832ff7116cc92b417227ed92ed24e4bcf9a27bf03a5d6a615bd","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:27:51.348299Z","signature_b64":"jG1q9UmKFK42MhpbXzGT6h6WpCZcnEgfRLckqFmfirY8iT9cIjAZsXKRWci62p0PLXqZz1ALTizmWbLmA++RDA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"8125f2ec06191832ff7116cc92b417227ed92ed24e4bcf9a27bf03a5d6a615bd","last_reissued_at":"2026-05-18T00:27:51.347824Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:27:51.347824Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1712.05991","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":"2026-05-18T00:27:51Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"F26+me4FzJzaVPHfnvSW8uJKUz55mtCdsVMXWpH42Z8mQ5Kul3lnJMaqx9SJQD5Q7UQFpt3dc/WGy5Vl7EMLDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T05:33:43.614128Z"},"content_sha256":"f6a90ca53a264db1701d7f00850ffb20d39b100aa62a16bbdda3f066233df879","schema_version":"1.0","event_id":"sha256:f6a90ca53a264db1701d7f00850ffb20d39b100aa62a16bbdda3f066233df879"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2017:QES7F3AGDEMDF73RC3GJFNAXEJ","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"High pressure electron spin resonance of the endohedral fullerene $^{15}\\mathrm{N@C}_{60}$","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"physics.chem-ph","authors_text":"A. Folli, E. A. Laird, G. A. D. Briggs, J. Zhou, K. Porfyrakis, R. T. Harding","submitted_at":"2017-12-16T17:14:28Z","abstract_excerpt":"We measure the electron spin resonance spectrum of the endohedral fullerene molecule $^{15}\\mathrm{N@C}_{60}$ at pressures ranging from atmospheric pressure to 0.25 GPa, and find that the hyperfine coupling increases linearly with pressure. We present a model based on van der Waals interactions, which accounts for this increase via compression of the fullerene cage and consequent admixture of orbitals with a larger hyperfine coupling. Combining this model with theoretical estimates of the bulk modulus, we predict the pressure shift and compare it to our experimental results, finding fair agree"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1712.05991","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":"2026-05-18T00:27:51Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"w7M1VBd/qH/IH23S+COTqqse2yfsGoqJBaeYh9UO5q0VR/GxKbi2BFYqqmWWnHAl5UScVx9z/vO5Y3ABrnElAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T05:33:43.614815Z"},"content_sha256":"79b80630a1f15a5c94b30da7db07a45066056f5c456eaeda632ee32e7adf68b0","schema_version":"1.0","event_id":"sha256:79b80630a1f15a5c94b30da7db07a45066056f5c456eaeda632ee32e7adf68b0"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/QES7F3AGDEMDF73RC3GJFNAXEJ/bundle.json","state_url":"https://pith.science/pith/QES7F3AGDEMDF73RC3GJFNAXEJ/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/QES7F3AGDEMDF73RC3GJFNAXEJ/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":"2026-05-27T05:33:43Z","links":{"resolver":"https://pith.science/pith/QES7F3AGDEMDF73RC3GJFNAXEJ","bundle":"https://pith.science/pith/QES7F3AGDEMDF73RC3GJFNAXEJ/bundle.json","state":"https://pith.science/pith/QES7F3AGDEMDF73RC3GJFNAXEJ/state.json","well_known_bundle":"https://pith.science/.well-known/pith/QES7F3AGDEMDF73RC3GJFNAXEJ/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:QES7F3AGDEMDF73RC3GJFNAXEJ","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":"d1cf2ea190e25e592068cf74d869546fefea1e47860f1a9812f6a05ee01860ba","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.chem-ph","submitted_at":"2017-12-16T17:14:28Z","title_canon_sha256":"17882fa09e241aad54ce7eb9eda586a8e78fa45f5e9a8c7082c18f101f1e78e9"},"schema_version":"1.0","source":{"id":"1712.05991","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1712.05991","created_at":"2026-05-18T00:27:51Z"},{"alias_kind":"arxiv_version","alias_value":"1712.05991v1","created_at":"2026-05-18T00:27:51Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1712.05991","created_at":"2026-05-18T00:27:51Z"},{"alias_kind":"pith_short_12","alias_value":"QES7F3AGDEMD","created_at":"2026-05-18T12:31:37Z"},{"alias_kind":"pith_short_16","alias_value":"QES7F3AGDEMDF73R","created_at":"2026-05-18T12:31:37Z"},{"alias_kind":"pith_short_8","alias_value":"QES7F3AG","created_at":"2026-05-18T12:31:37Z"}],"graph_snapshots":[{"event_id":"sha256:79b80630a1f15a5c94b30da7db07a45066056f5c456eaeda632ee32e7adf68b0","target":"graph","created_at":"2026-05-18T00:27:51Z","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"},"paper":{"abstract_excerpt":"We measure the electron spin resonance spectrum of the endohedral fullerene molecule $^{15}\\mathrm{N@C}_{60}$ at pressures ranging from atmospheric pressure to 0.25 GPa, and find that the hyperfine coupling increases linearly with pressure. We present a model based on van der Waals interactions, which accounts for this increase via compression of the fullerene cage and consequent admixture of orbitals with a larger hyperfine coupling. Combining this model with theoretical estimates of the bulk modulus, we predict the pressure shift and compare it to our experimental results, finding fair agree","authors_text":"A. Folli, E. A. Laird, G. A. D. Briggs, J. Zhou, K. Porfyrakis, R. T. Harding","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.chem-ph","submitted_at":"2017-12-16T17:14:28Z","title":"High pressure electron spin resonance of the endohedral fullerene $^{15}\\mathrm{N@C}_{60}$"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1712.05991","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:f6a90ca53a264db1701d7f00850ffb20d39b100aa62a16bbdda3f066233df879","target":"record","created_at":"2026-05-18T00:27:51Z","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":"d1cf2ea190e25e592068cf74d869546fefea1e47860f1a9812f6a05ee01860ba","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.chem-ph","submitted_at":"2017-12-16T17:14:28Z","title_canon_sha256":"17882fa09e241aad54ce7eb9eda586a8e78fa45f5e9a8c7082c18f101f1e78e9"},"schema_version":"1.0","source":{"id":"1712.05991","kind":"arxiv","version":1}},"canonical_sha256":"8125f2ec06191832ff7116cc92b417227ed92ed24e4bcf9a27bf03a5d6a615bd","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"8125f2ec06191832ff7116cc92b417227ed92ed24e4bcf9a27bf03a5d6a615bd","first_computed_at":"2026-05-18T00:27:51.347824Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:27:51.347824Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"jG1q9UmKFK42MhpbXzGT6h6WpCZcnEgfRLckqFmfirY8iT9cIjAZsXKRWci62p0PLXqZz1ALTizmWbLmA++RDA==","signature_status":"signed_v1","signed_at":"2026-05-18T00:27:51.348299Z","signed_message":"canonical_sha256_bytes"},"source_id":"1712.05991","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:f6a90ca53a264db1701d7f00850ffb20d39b100aa62a16bbdda3f066233df879","sha256:79b80630a1f15a5c94b30da7db07a45066056f5c456eaeda632ee32e7adf68b0"],"state_sha256":"d398975817afd25211680f34646e1815b879ea2dfb0395044364f874352fffe2"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"70iXap/WaogH3Pe/WahlxltgPPP+FhvdnbYRoC+xJbsXnUSAn4YnXvYQVphLKROXJq+vy/pIsBU0wwCrZaO3Cw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-27T05:33:43.618051Z","bundle_sha256":"130cf0c24085c4ede1b1d98de5022dddc4cbb9c45117707232b08826b0edf36b"}}