{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2014:5VP6ZID3K7WEWJQEUMN2OWEBE7","short_pith_number":"pith:5VP6ZID3","canonical_record":{"source":{"id":"1401.1419","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2014-01-07T15:37:09Z","cross_cats_sorted":[],"title_canon_sha256":"fa6e6f3daf083d4f132a8a7c7fb89c027aa9842f7cf30d3578bcd54fa96fc228","abstract_canon_sha256":"ffcc35871545e5706c72c5bcf9e8a08b42afb83bcefa4ea83aeffa52060ae315"},"schema_version":"1.0"},"canonical_sha256":"ed5feca07b57ec4b2604a31ba7588127f8d1d4a0edc91508678bf29d65695faf","source":{"kind":"arxiv","id":"1401.1419","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1401.1419","created_at":"2026-05-18T03:03:08Z"},{"alias_kind":"arxiv_version","alias_value":"1401.1419v1","created_at":"2026-05-18T03:03:08Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1401.1419","created_at":"2026-05-18T03:03:08Z"},{"alias_kind":"pith_short_12","alias_value":"5VP6ZID3K7WE","created_at":"2026-05-18T12:28:16Z"},{"alias_kind":"pith_short_16","alias_value":"5VP6ZID3K7WEWJQE","created_at":"2026-05-18T12:28:16Z"},{"alias_kind":"pith_short_8","alias_value":"5VP6ZID3","created_at":"2026-05-18T12:28:16Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2014:5VP6ZID3K7WEWJQEUMN2OWEBE7","target":"record","payload":{"canonical_record":{"source":{"id":"1401.1419","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2014-01-07T15:37:09Z","cross_cats_sorted":[],"title_canon_sha256":"fa6e6f3daf083d4f132a8a7c7fb89c027aa9842f7cf30d3578bcd54fa96fc228","abstract_canon_sha256":"ffcc35871545e5706c72c5bcf9e8a08b42afb83bcefa4ea83aeffa52060ae315"},"schema_version":"1.0"},"canonical_sha256":"ed5feca07b57ec4b2604a31ba7588127f8d1d4a0edc91508678bf29d65695faf","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:03:08.418966Z","signature_b64":"YJdsA4Ul3pjNf3LMjiolW3CN9WP+J25WUndex+8dTnVIou4ed8Nb3xvQsuUIizbSj4wUB5RIppEwfJeVC8IcBA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"ed5feca07b57ec4b2604a31ba7588127f8d1d4a0edc91508678bf29d65695faf","last_reissued_at":"2026-05-18T03:03:08.418524Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:03:08.418524Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1401.1419","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":"2026-05-18T03:03:08Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"3/nHypC+7cR80jW6R1AIA9ly9WCLR/JZTJsMAZsccFSEUBNSDvwQ92RaObKwzTnmmD7jzmvb7XseO6LSnmLhCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-05T20:09:12.954859Z"},"content_sha256":"60e6d55f29ba75accf5dfdd5cd16aeeb711bca908a6081049593979954dcf336","schema_version":"1.0","event_id":"sha256:60e6d55f29ba75accf5dfdd5cd16aeeb711bca908a6081049593979954dcf336"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2014:5VP6ZID3K7WEWJQEUMN2OWEBE7","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Ionic ammonia ice","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.mtrl-sci","authors_text":"A. Mafety, A.M. Saitta, C.J. Pickard, F. Datchi, G. Garbarino, M. Mezouar, P. Dumas, R.J. Needs, S. Ninet","submitted_at":"2014-01-07T15:37:09Z","abstract_excerpt":"We report experimental and theoretical evidence that solid molecular ammonia becomes unstable at room temperature and high pressures and transforms into an ionic crystalline form. This material has been characterised in both hydrogenated NH3 and deuterated ND3 ammonia samples up to about 180 and 200 GPa, respectively, by infrared absorption, Raman spectroscopy and x-ray diffraction. The presence of a new, strong IR absorption band centered at 2500 cm-1 in NH3 (1900 cm-1 in ND3) signals the ionization of ammonia molecules into NH2- and NH4+ ions, in line with previous theoretical predictions. W"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1401.1419","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":"2026-05-18T03:03:08Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"d9OxENFUPEoGc11XeWNkmW7x26ayuOfYFKdsCdVq+apY7ySLViNYY89jPOzwKSMVnNvCAIgpfUIvwNHx+3D0CQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-05T20:09:12.955284Z"},"content_sha256":"e0b425b4e7b7336452d45c18e3c542545e2a78f5a307591096bffad21db2a27b","schema_version":"1.0","event_id":"sha256:e0b425b4e7b7336452d45c18e3c542545e2a78f5a307591096bffad21db2a27b"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/5VP6ZID3K7WEWJQEUMN2OWEBE7/bundle.json","state_url":"https://pith.science/pith/5VP6ZID3K7WEWJQEUMN2OWEBE7/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/5VP6ZID3K7WEWJQEUMN2OWEBE7/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":"2026-06-05T20:09:12Z","links":{"resolver":"https://pith.science/pith/5VP6ZID3K7WEWJQEUMN2OWEBE7","bundle":"https://pith.science/pith/5VP6ZID3K7WEWJQEUMN2OWEBE7/bundle.json","state":"https://pith.science/pith/5VP6ZID3K7WEWJQEUMN2OWEBE7/state.json","well_known_bundle":"https://pith.science/.well-known/pith/5VP6ZID3K7WEWJQEUMN2OWEBE7/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2014:5VP6ZID3K7WEWJQEUMN2OWEBE7","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":"ffcc35871545e5706c72c5bcf9e8a08b42afb83bcefa4ea83aeffa52060ae315","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2014-01-07T15:37:09Z","title_canon_sha256":"fa6e6f3daf083d4f132a8a7c7fb89c027aa9842f7cf30d3578bcd54fa96fc228"},"schema_version":"1.0","source":{"id":"1401.1419","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1401.1419","created_at":"2026-05-18T03:03:08Z"},{"alias_kind":"arxiv_version","alias_value":"1401.1419v1","created_at":"2026-05-18T03:03:08Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1401.1419","created_at":"2026-05-18T03:03:08Z"},{"alias_kind":"pith_short_12","alias_value":"5VP6ZID3K7WE","created_at":"2026-05-18T12:28:16Z"},{"alias_kind":"pith_short_16","alias_value":"5VP6ZID3K7WEWJQE","created_at":"2026-05-18T12:28:16Z"},{"alias_kind":"pith_short_8","alias_value":"5VP6ZID3","created_at":"2026-05-18T12:28:16Z"}],"graph_snapshots":[{"event_id":"sha256:e0b425b4e7b7336452d45c18e3c542545e2a78f5a307591096bffad21db2a27b","target":"graph","created_at":"2026-05-18T03:03:08Z","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 report experimental and theoretical evidence that solid molecular ammonia becomes unstable at room temperature and high pressures and transforms into an ionic crystalline form. This material has been characterised in both hydrogenated NH3 and deuterated ND3 ammonia samples up to about 180 and 200 GPa, respectively, by infrared absorption, Raman spectroscopy and x-ray diffraction. The presence of a new, strong IR absorption band centered at 2500 cm-1 in NH3 (1900 cm-1 in ND3) signals the ionization of ammonia molecules into NH2- and NH4+ ions, in line with previous theoretical predictions. W","authors_text":"A. Mafety, A.M. Saitta, C.J. Pickard, F. Datchi, G. Garbarino, M. Mezouar, P. Dumas, R.J. Needs, S. Ninet","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2014-01-07T15:37:09Z","title":"Ionic ammonia ice"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1401.1419","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":"sha256:60e6d55f29ba75accf5dfdd5cd16aeeb711bca908a6081049593979954dcf336","target":"record","created_at":"2026-05-18T03:03:08Z","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":"ffcc35871545e5706c72c5bcf9e8a08b42afb83bcefa4ea83aeffa52060ae315","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2014-01-07T15:37:09Z","title_canon_sha256":"fa6e6f3daf083d4f132a8a7c7fb89c027aa9842f7cf30d3578bcd54fa96fc228"},"schema_version":"1.0","source":{"id":"1401.1419","kind":"arxiv","version":1}},"canonical_sha256":"ed5feca07b57ec4b2604a31ba7588127f8d1d4a0edc91508678bf29d65695faf","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"ed5feca07b57ec4b2604a31ba7588127f8d1d4a0edc91508678bf29d65695faf","first_computed_at":"2026-05-18T03:03:08.418524Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:03:08.418524Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"YJdsA4Ul3pjNf3LMjiolW3CN9WP+J25WUndex+8dTnVIou4ed8Nb3xvQsuUIizbSj4wUB5RIppEwfJeVC8IcBA==","signature_status":"signed_v1","signed_at":"2026-05-18T03:03:08.418966Z","signed_message":"canonical_sha256_bytes"},"source_id":"1401.1419","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:60e6d55f29ba75accf5dfdd5cd16aeeb711bca908a6081049593979954dcf336","sha256:e0b425b4e7b7336452d45c18e3c542545e2a78f5a307591096bffad21db2a27b"],"state_sha256":"0ae4a389c46a693badfaac62f785112194c02e30e86527171a2c4ff6c81db3d0"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"BM7PqVeR5eUhtle0CUQIUfhhh5hQXpO9H9dmiCTuae+p82R3NRg4jVLS3KMBuKAozGTty92RnKHupn9XlerTBw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-05T20:09:12.958586Z","bundle_sha256":"d558268176d11318c313364163f4a0ae30d101c6cdadfe585b33f9310d9b1baa"}}