{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2015:VDQ5QLB2PZDKODBITPRD5P47VJ","short_pith_number":"pith:VDQ5QLB2","canonical_record":{"source":{"id":"1507.01633","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2015-07-06T22:09:22Z","cross_cats_sorted":[],"title_canon_sha256":"0c9453c51697286c489b1d4b1241ff5f387d61b309818a9410f0151c4d5457a2","abstract_canon_sha256":"69f621f2b90944578b60c57ee8fc6198191b266caf46750990d01d3203a8729f"},"schema_version":"1.0"},"canonical_sha256":"a8e1d82c3a7e46a70c289be23ebf9faa53b9de914b32ab3d49f8fa729c72d19f","source":{"kind":"arxiv","id":"1507.01633","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1507.01633","created_at":"2026-05-18T01:37:12Z"},{"alias_kind":"arxiv_version","alias_value":"1507.01633v1","created_at":"2026-05-18T01:37:12Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1507.01633","created_at":"2026-05-18T01:37:12Z"},{"alias_kind":"pith_short_12","alias_value":"VDQ5QLB2PZDK","created_at":"2026-05-18T12:29:44Z"},{"alias_kind":"pith_short_16","alias_value":"VDQ5QLB2PZDKODBI","created_at":"2026-05-18T12:29:44Z"},{"alias_kind":"pith_short_8","alias_value":"VDQ5QLB2","created_at":"2026-05-18T12:29:44Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2015:VDQ5QLB2PZDKODBITPRD5P47VJ","target":"record","payload":{"canonical_record":{"source":{"id":"1507.01633","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2015-07-06T22:09:22Z","cross_cats_sorted":[],"title_canon_sha256":"0c9453c51697286c489b1d4b1241ff5f387d61b309818a9410f0151c4d5457a2","abstract_canon_sha256":"69f621f2b90944578b60c57ee8fc6198191b266caf46750990d01d3203a8729f"},"schema_version":"1.0"},"canonical_sha256":"a8e1d82c3a7e46a70c289be23ebf9faa53b9de914b32ab3d49f8fa729c72d19f","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:37:12.841155Z","signature_b64":"Jhbx0VkmSLLIAZ4KL3NdCaCQ2uSLFrfkI6SXaoOl6yDPTOflRrAwlUymX9j8vwcM8gdy6UKIFsgfI7LCrd5fDA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"a8e1d82c3a7e46a70c289be23ebf9faa53b9de914b32ab3d49f8fa729c72d19f","last_reissued_at":"2026-05-18T01:37:12.840568Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:37:12.840568Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1507.01633","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":"2026-05-18T01:37:12Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"2AxUy2dcHoS9DeTrA0BERWCQrrLZAfiCwr3JGi2p/7mRZ+7lzMWwiNLyZZvkMWqPTAisKWPhRdEQfkYhnDHKBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-21T06:04:23.746724Z"},"content_sha256":"d854311ed460ba7e26245dc22c5d7bd81ead536ad1d4f9b88630d860649f099d","schema_version":"1.0","event_id":"sha256:d854311ed460ba7e26245dc22c5d7bd81ead536ad1d4f9b88630d860649f099d"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2015:VDQ5QLB2PZDKODBITPRD5P47VJ","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The energy gap of the compound FeSe0.5Te0.5 determined by specific heat and point contact spectroscopy","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.supr-con","authors_text":"Roberto Escudero, Rodolfo E. L\\'opez-Romero","submitted_at":"2015-07-06T22:09:22Z","abstract_excerpt":"The superconductor $FeSe_{0.5}Te_{0.5}$ was studied with Point Contact spectroscopy and specific heat in polycrystalline samples. The transition temperature determined by magnetic measurement was $T_C =14.5$ K. The size of the energy gap measured by junctions is $\\Delta = 1.9$ meV, whereas the gap determined by the specific heat measurements was $\\Delta = 2.3 $ meV. The gap evolution with temperature follows BCS, the ratio 2$\\Delta$/$K_BT_C$ has values between 2.88 $\\leq 2\\Delta/K_BT_C \\leq 3.04$. The compound was grown by solid state synthesis in quartz ampoules under vacuum at 950 C. Crystal"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1507.01633","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":"2026-05-18T01:37:12Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"R1kKxLYqvlw9pfdV11/xhruKkhMtrFDQnaryrM9G0U+bG25MtKH56xj8wwWUBSF1d1CwhsiYmQVdcjTHgTLcDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-21T06:04:23.747068Z"},"content_sha256":"8832fecca167d6681ec5f4b7b674c9f8049b2703b8ca2690dcbb7f4ebb509ef3","schema_version":"1.0","event_id":"sha256:8832fecca167d6681ec5f4b7b674c9f8049b2703b8ca2690dcbb7f4ebb509ef3"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/VDQ5QLB2PZDKODBITPRD5P47VJ/bundle.json","state_url":"https://pith.science/pith/VDQ5QLB2PZDKODBITPRD5P47VJ/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/VDQ5QLB2PZDKODBITPRD5P47VJ/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":"2026-06-21T06:04:23Z","links":{"resolver":"https://pith.science/pith/VDQ5QLB2PZDKODBITPRD5P47VJ","bundle":"https://pith.science/pith/VDQ5QLB2PZDKODBITPRD5P47VJ/bundle.json","state":"https://pith.science/pith/VDQ5QLB2PZDKODBITPRD5P47VJ/state.json","well_known_bundle":"https://pith.science/.well-known/pith/VDQ5QLB2PZDKODBITPRD5P47VJ/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:VDQ5QLB2PZDKODBITPRD5P47VJ","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":"69f621f2b90944578b60c57ee8fc6198191b266caf46750990d01d3203a8729f","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2015-07-06T22:09:22Z","title_canon_sha256":"0c9453c51697286c489b1d4b1241ff5f387d61b309818a9410f0151c4d5457a2"},"schema_version":"1.0","source":{"id":"1507.01633","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1507.01633","created_at":"2026-05-18T01:37:12Z"},{"alias_kind":"arxiv_version","alias_value":"1507.01633v1","created_at":"2026-05-18T01:37:12Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1507.01633","created_at":"2026-05-18T01:37:12Z"},{"alias_kind":"pith_short_12","alias_value":"VDQ5QLB2PZDK","created_at":"2026-05-18T12:29:44Z"},{"alias_kind":"pith_short_16","alias_value":"VDQ5QLB2PZDKODBI","created_at":"2026-05-18T12:29:44Z"},{"alias_kind":"pith_short_8","alias_value":"VDQ5QLB2","created_at":"2026-05-18T12:29:44Z"}],"graph_snapshots":[{"event_id":"sha256:8832fecca167d6681ec5f4b7b674c9f8049b2703b8ca2690dcbb7f4ebb509ef3","target":"graph","created_at":"2026-05-18T01:37:12Z","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":"The superconductor $FeSe_{0.5}Te_{0.5}$ was studied with Point Contact spectroscopy and specific heat in polycrystalline samples. The transition temperature determined by magnetic measurement was $T_C =14.5$ K. The size of the energy gap measured by junctions is $\\Delta = 1.9$ meV, whereas the gap determined by the specific heat measurements was $\\Delta = 2.3 $ meV. The gap evolution with temperature follows BCS, the ratio 2$\\Delta$/$K_BT_C$ has values between 2.88 $\\leq 2\\Delta/K_BT_C \\leq 3.04$. The compound was grown by solid state synthesis in quartz ampoules under vacuum at 950 C. Crystal","authors_text":"Roberto Escudero, Rodolfo E. L\\'opez-Romero","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2015-07-06T22:09:22Z","title":"The energy gap of the compound FeSe0.5Te0.5 determined by specific heat and point contact spectroscopy"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1507.01633","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:d854311ed460ba7e26245dc22c5d7bd81ead536ad1d4f9b88630d860649f099d","target":"record","created_at":"2026-05-18T01:37:12Z","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":"69f621f2b90944578b60c57ee8fc6198191b266caf46750990d01d3203a8729f","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2015-07-06T22:09:22Z","title_canon_sha256":"0c9453c51697286c489b1d4b1241ff5f387d61b309818a9410f0151c4d5457a2"},"schema_version":"1.0","source":{"id":"1507.01633","kind":"arxiv","version":1}},"canonical_sha256":"a8e1d82c3a7e46a70c289be23ebf9faa53b9de914b32ab3d49f8fa729c72d19f","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"a8e1d82c3a7e46a70c289be23ebf9faa53b9de914b32ab3d49f8fa729c72d19f","first_computed_at":"2026-05-18T01:37:12.840568Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:37:12.840568Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Jhbx0VkmSLLIAZ4KL3NdCaCQ2uSLFrfkI6SXaoOl6yDPTOflRrAwlUymX9j8vwcM8gdy6UKIFsgfI7LCrd5fDA==","signature_status":"signed_v1","signed_at":"2026-05-18T01:37:12.841155Z","signed_message":"canonical_sha256_bytes"},"source_id":"1507.01633","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:d854311ed460ba7e26245dc22c5d7bd81ead536ad1d4f9b88630d860649f099d","sha256:8832fecca167d6681ec5f4b7b674c9f8049b2703b8ca2690dcbb7f4ebb509ef3"],"state_sha256":"5804a1cbac2f04fb2b11ffe398338c09846c93bb45859548b02f2e21939596fd"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"qFKkd/6zkPMlHGOfSINxlPUeeeqhq26w+elxKl2Gclk1qxamYKXVQFSzTVWaZyQZmeIDoHA8isEp6t2BPU20Dg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-21T06:04:23.748950Z","bundle_sha256":"5174b80aed1de62230d5634bae24558bcccc3158320809e088643cbae0960005"}}