{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2016:R7FJLXUVMZKHUZVSXPZXCAHFUL","short_pith_number":"pith:R7FJLXUV","canonical_record":{"source":{"id":"1611.08875","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2016-11-27T17:23:11Z","cross_cats_sorted":[],"title_canon_sha256":"a6031885010cfe331a7d915672bdd95967c9c2cc2a7f65645d0c1d1665d1a6c5","abstract_canon_sha256":"2267883841666f889b2135b1cb32d1e4dfed8c9cee54cc622f32ba83bdc8047a"},"schema_version":"1.0"},"canonical_sha256":"8fca95de9566547a66b2bbf37100e5a2f34ced1130db57f4ff33401e0c3e682e","source":{"kind":"arxiv","id":"1611.08875","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1611.08875","created_at":"2026-05-18T00:32:14Z"},{"alias_kind":"arxiv_version","alias_value":"1611.08875v1","created_at":"2026-05-18T00:32:14Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1611.08875","created_at":"2026-05-18T00:32:14Z"},{"alias_kind":"pith_short_12","alias_value":"R7FJLXUVMZKH","created_at":"2026-05-18T12:30:41Z"},{"alias_kind":"pith_short_16","alias_value":"R7FJLXUVMZKHUZVS","created_at":"2026-05-18T12:30:41Z"},{"alias_kind":"pith_short_8","alias_value":"R7FJLXUV","created_at":"2026-05-18T12:30:41Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2016:R7FJLXUVMZKHUZVSXPZXCAHFUL","target":"record","payload":{"canonical_record":{"source":{"id":"1611.08875","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2016-11-27T17:23:11Z","cross_cats_sorted":[],"title_canon_sha256":"a6031885010cfe331a7d915672bdd95967c9c2cc2a7f65645d0c1d1665d1a6c5","abstract_canon_sha256":"2267883841666f889b2135b1cb32d1e4dfed8c9cee54cc622f32ba83bdc8047a"},"schema_version":"1.0"},"canonical_sha256":"8fca95de9566547a66b2bbf37100e5a2f34ced1130db57f4ff33401e0c3e682e","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:32:14.329569Z","signature_b64":"HySNYzBNiupRiCcvN+kqxYrIKgzGByf2t7TBbgXt7VfW5LvuS8H1rSAMW1D4B9P2nBotMnRE8xvt9mfWquv8CA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"8fca95de9566547a66b2bbf37100e5a2f34ced1130db57f4ff33401e0c3e682e","last_reissued_at":"2026-05-18T00:32:14.328915Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:32:14.328915Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1611.08875","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":"2026-05-18T00:32:14Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"r600FfqrrK0gv2ed/yvtu6VA8LwxhKeac9WIcZVzEXAOW/vU4BiOLF6lnzbgBgYeYHhG+AEcW+Hy2iWazfgcAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-24T14:13:15.488747Z"},"content_sha256":"0c15cfa78013cd1053aee7825b4e1d6d21b0135481d12bdefcad322f212dac55","schema_version":"1.0","event_id":"sha256:0c15cfa78013cd1053aee7825b4e1d6d21b0135481d12bdefcad322f212dac55"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2016:R7FJLXUVMZKHUZVSXPZXCAHFUL","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Comment on A First-order Phase Transition to Metallic Hydrogen","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.mtrl-sci","authors_text":"Alexander F. Goncharov, Zachary M. Geballe","submitted_at":"2016-11-27T17:23:11Z","abstract_excerpt":"A recent paper by Zaghoo et al. presents optical data at high-pressure and high-temperature and interprets the data as evidence for a first-order phase transition to metallic hydrogen during heating. Here we argue that the presented data are contradictory with these claims. Elucidating this issue is important for building a coherent picture that is emerging as the results of theoretical calculations of various levels and experimental investigations employing static and dynamic compression techniques. In this context, the use of adequate probes of the electronic and chemical state is crucial. O"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1611.08875","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":"2026-05-18T00:32:14Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"UT4yNjPvkWLPaSVSLqrzk4GOGt9QM8G0RooYDhv6Tge9ePe8Ik5Nndc14F+NUOMSkZ5tMcgCPU4je0nzBd3FAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-24T14:13:15.489364Z"},"content_sha256":"e4f70e9b3f1b9d67482e3e4d674ef1c96ea22f598b9c7b6b4b46c384b0d5532d","schema_version":"1.0","event_id":"sha256:e4f70e9b3f1b9d67482e3e4d674ef1c96ea22f598b9c7b6b4b46c384b0d5532d"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/R7FJLXUVMZKHUZVSXPZXCAHFUL/bundle.json","state_url":"https://pith.science/pith/R7FJLXUVMZKHUZVSXPZXCAHFUL/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/R7FJLXUVMZKHUZVSXPZXCAHFUL/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":"2026-05-24T14:13:15Z","links":{"resolver":"https://pith.science/pith/R7FJLXUVMZKHUZVSXPZXCAHFUL","bundle":"https://pith.science/pith/R7FJLXUVMZKHUZVSXPZXCAHFUL/bundle.json","state":"https://pith.science/pith/R7FJLXUVMZKHUZVSXPZXCAHFUL/state.json","well_known_bundle":"https://pith.science/.well-known/pith/R7FJLXUVMZKHUZVSXPZXCAHFUL/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:R7FJLXUVMZKHUZVSXPZXCAHFUL","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":"2267883841666f889b2135b1cb32d1e4dfed8c9cee54cc622f32ba83bdc8047a","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2016-11-27T17:23:11Z","title_canon_sha256":"a6031885010cfe331a7d915672bdd95967c9c2cc2a7f65645d0c1d1665d1a6c5"},"schema_version":"1.0","source":{"id":"1611.08875","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1611.08875","created_at":"2026-05-18T00:32:14Z"},{"alias_kind":"arxiv_version","alias_value":"1611.08875v1","created_at":"2026-05-18T00:32:14Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1611.08875","created_at":"2026-05-18T00:32:14Z"},{"alias_kind":"pith_short_12","alias_value":"R7FJLXUVMZKH","created_at":"2026-05-18T12:30:41Z"},{"alias_kind":"pith_short_16","alias_value":"R7FJLXUVMZKHUZVS","created_at":"2026-05-18T12:30:41Z"},{"alias_kind":"pith_short_8","alias_value":"R7FJLXUV","created_at":"2026-05-18T12:30:41Z"}],"graph_snapshots":[{"event_id":"sha256:e4f70e9b3f1b9d67482e3e4d674ef1c96ea22f598b9c7b6b4b46c384b0d5532d","target":"graph","created_at":"2026-05-18T00:32:14Z","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":"A recent paper by Zaghoo et al. presents optical data at high-pressure and high-temperature and interprets the data as evidence for a first-order phase transition to metallic hydrogen during heating. Here we argue that the presented data are contradictory with these claims. Elucidating this issue is important for building a coherent picture that is emerging as the results of theoretical calculations of various levels and experimental investigations employing static and dynamic compression techniques. In this context, the use of adequate probes of the electronic and chemical state is crucial. O","authors_text":"Alexander F. Goncharov, Zachary M. Geballe","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2016-11-27T17:23:11Z","title":"Comment on A First-order Phase Transition to Metallic Hydrogen"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1611.08875","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":"sha256:0c15cfa78013cd1053aee7825b4e1d6d21b0135481d12bdefcad322f212dac55","target":"record","created_at":"2026-05-18T00:32:14Z","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":"2267883841666f889b2135b1cb32d1e4dfed8c9cee54cc622f32ba83bdc8047a","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2016-11-27T17:23:11Z","title_canon_sha256":"a6031885010cfe331a7d915672bdd95967c9c2cc2a7f65645d0c1d1665d1a6c5"},"schema_version":"1.0","source":{"id":"1611.08875","kind":"arxiv","version":1}},"canonical_sha256":"8fca95de9566547a66b2bbf37100e5a2f34ced1130db57f4ff33401e0c3e682e","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"8fca95de9566547a66b2bbf37100e5a2f34ced1130db57f4ff33401e0c3e682e","first_computed_at":"2026-05-18T00:32:14.328915Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:32:14.328915Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"HySNYzBNiupRiCcvN+kqxYrIKgzGByf2t7TBbgXt7VfW5LvuS8H1rSAMW1D4B9P2nBotMnRE8xvt9mfWquv8CA==","signature_status":"signed_v1","signed_at":"2026-05-18T00:32:14.329569Z","signed_message":"canonical_sha256_bytes"},"source_id":"1611.08875","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:0c15cfa78013cd1053aee7825b4e1d6d21b0135481d12bdefcad322f212dac55","sha256:e4f70e9b3f1b9d67482e3e4d674ef1c96ea22f598b9c7b6b4b46c384b0d5532d"],"state_sha256":"38aee7a1814b35244f5b32fec8587d89b33edd3d7e0093038aabe89241d8091e"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"D46OHkIKQqrn2T0kbH/cKn+4qctxlQynx3O3Fpq3VTX2sYW/qetT/ZEBeb8+7cdhcKTjkSMTVwYdpxBL5nyPDg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-24T14:13:15.492259Z","bundle_sha256":"68ccca2c698f78b27080442107a9ee81222735dcbaf6128a3d676e87ea8bb674"}}