{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2012:OLID4QQFQWR6ENY3WMM7TR2S4F","short_pith_number":"pith:OLID4QQF","canonical_record":{"source":{"id":"1203.5332","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.chem-ph","submitted_at":"2012-03-23T02:37:21Z","cross_cats_sorted":[],"title_canon_sha256":"11ada104533b1e71fcc03cbf026cc85fb4903b938257ff1522e912ab1f8e6249","abstract_canon_sha256":"ceb24a7eedd2346b80b847c405d1f344eb27951906ec80512ff19d2530977310"},"schema_version":"1.0"},"canonical_sha256":"72d03e420585a3e2371bb319f9c752e16059c1434409e596534da6ae033359e8","source":{"kind":"arxiv","id":"1203.5332","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1203.5332","created_at":"2026-05-18T03:57:15Z"},{"alias_kind":"arxiv_version","alias_value":"1203.5332v2","created_at":"2026-05-18T03:57:15Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1203.5332","created_at":"2026-05-18T03:57:15Z"},{"alias_kind":"pith_short_12","alias_value":"OLID4QQFQWR6","created_at":"2026-05-18T12:27:16Z"},{"alias_kind":"pith_short_16","alias_value":"OLID4QQFQWR6ENY3","created_at":"2026-05-18T12:27:16Z"},{"alias_kind":"pith_short_8","alias_value":"OLID4QQF","created_at":"2026-05-18T12:27:16Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2012:OLID4QQFQWR6ENY3WMM7TR2S4F","target":"record","payload":{"canonical_record":{"source":{"id":"1203.5332","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.chem-ph","submitted_at":"2012-03-23T02:37:21Z","cross_cats_sorted":[],"title_canon_sha256":"11ada104533b1e71fcc03cbf026cc85fb4903b938257ff1522e912ab1f8e6249","abstract_canon_sha256":"ceb24a7eedd2346b80b847c405d1f344eb27951906ec80512ff19d2530977310"},"schema_version":"1.0"},"canonical_sha256":"72d03e420585a3e2371bb319f9c752e16059c1434409e596534da6ae033359e8","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:57:15.694034Z","signature_b64":"xq6XMcy9TjTgZXfnq9HNQG7IMFKtl4BxFfj75M/6lXuUevugBCZidUtRaby6ty5lbjg/iOs6wHw3IN21VEajDA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"72d03e420585a3e2371bb319f9c752e16059c1434409e596534da6ae033359e8","last_reissued_at":"2026-05-18T03:57:15.693454Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:57:15.693454Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1203.5332","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T03:57:15Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"HGYBT/nG93pP0ZmU2b5XWMH/i8+sL8tGs+Ln4wN1X0Bt65sPK69255i2yG9oCNUcama8Op27iR8NI/bbnO+uDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-03T12:50:54.350746Z"},"content_sha256":"1565728be1a35ab92d97a50400641d816fb8284947ba688d5a0d93daf05251e0","schema_version":"1.0","event_id":"sha256:1565728be1a35ab92d97a50400641d816fb8284947ba688d5a0d93daf05251e0"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2012:OLID4QQFQWR6ENY3WMM7TR2S4F","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Determination of the forms of calcium present in coal chars by Ca K-edge XANES with Synchrotron Radiation","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"physics.chem-ph","authors_text":"Chenyan Ma, Dongliang Yang, Huijun Liu, Jie Wang, Lei Zheng, Lijuan Liu, Mingqi Cui, Shibo Xi, Yidong Zhao, Yongfeng Hu, Zhiying Guo","submitted_at":"2012-03-23T02:37:21Z","abstract_excerpt":"This work is concerned with the Ca transformations during the pyrolysis of Ca(OH)2 or CaCO3-added coals. Ca K-edge X-ray absorption near edge structure (XANES) spectroscopy was applied to determine the forms of Ca in chars prepared from the pyrolysis of Ca-added coal. Results showed that Ca(OH)2 and CaSO4 existed in both the Ca(OH)2-added chars and the CaCO3-added chars, while CaS and CaO only existed in the chars prepared from the Ca(OH)2-added coal. Moreover, it was found that carboxyl Ca was formed during pyrolysis for either the Ca(OH)2-added coal or the CaCO3-added coals."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1203.5332","kind":"arxiv","version":2},"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":"2026-05-18T03:57:15Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"h+Xocjh2i7ANG8nWZkwRpKQjQjRpATARy64uQVxP7vrzYZNb5eieYUWWPtBAUtdWzNNXaJGZlQEvTaHAhlTLBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-03T12:50:54.351095Z"},"content_sha256":"60acd94c73fc87757fcb1da1089d215ba44d9e7d035edc9612884d5f80642b8e","schema_version":"1.0","event_id":"sha256:60acd94c73fc87757fcb1da1089d215ba44d9e7d035edc9612884d5f80642b8e"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/OLID4QQFQWR6ENY3WMM7TR2S4F/bundle.json","state_url":"https://pith.science/pith/OLID4QQFQWR6ENY3WMM7TR2S4F/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/OLID4QQFQWR6ENY3WMM7TR2S4F/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":"2026-06-03T12:50:54Z","links":{"resolver":"https://pith.science/pith/OLID4QQFQWR6ENY3WMM7TR2S4F","bundle":"https://pith.science/pith/OLID4QQFQWR6ENY3WMM7TR2S4F/bundle.json","state":"https://pith.science/pith/OLID4QQFQWR6ENY3WMM7TR2S4F/state.json","well_known_bundle":"https://pith.science/.well-known/pith/OLID4QQFQWR6ENY3WMM7TR2S4F/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:OLID4QQFQWR6ENY3WMM7TR2S4F","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":"ceb24a7eedd2346b80b847c405d1f344eb27951906ec80512ff19d2530977310","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.chem-ph","submitted_at":"2012-03-23T02:37:21Z","title_canon_sha256":"11ada104533b1e71fcc03cbf026cc85fb4903b938257ff1522e912ab1f8e6249"},"schema_version":"1.0","source":{"id":"1203.5332","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1203.5332","created_at":"2026-05-18T03:57:15Z"},{"alias_kind":"arxiv_version","alias_value":"1203.5332v2","created_at":"2026-05-18T03:57:15Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1203.5332","created_at":"2026-05-18T03:57:15Z"},{"alias_kind":"pith_short_12","alias_value":"OLID4QQFQWR6","created_at":"2026-05-18T12:27:16Z"},{"alias_kind":"pith_short_16","alias_value":"OLID4QQFQWR6ENY3","created_at":"2026-05-18T12:27:16Z"},{"alias_kind":"pith_short_8","alias_value":"OLID4QQF","created_at":"2026-05-18T12:27:16Z"}],"graph_snapshots":[{"event_id":"sha256:60acd94c73fc87757fcb1da1089d215ba44d9e7d035edc9612884d5f80642b8e","target":"graph","created_at":"2026-05-18T03:57:15Z","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":"This work is concerned with the Ca transformations during the pyrolysis of Ca(OH)2 or CaCO3-added coals. Ca K-edge X-ray absorption near edge structure (XANES) spectroscopy was applied to determine the forms of Ca in chars prepared from the pyrolysis of Ca-added coal. Results showed that Ca(OH)2 and CaSO4 existed in both the Ca(OH)2-added chars and the CaCO3-added chars, while CaS and CaO only existed in the chars prepared from the Ca(OH)2-added coal. Moreover, it was found that carboxyl Ca was formed during pyrolysis for either the Ca(OH)2-added coal or the CaCO3-added coals.","authors_text":"Chenyan Ma, Dongliang Yang, Huijun Liu, Jie Wang, Lei Zheng, Lijuan Liu, Mingqi Cui, Shibo Xi, Yidong Zhao, Yongfeng Hu, Zhiying Guo","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.chem-ph","submitted_at":"2012-03-23T02:37:21Z","title":"Determination of the forms of calcium present in coal chars by Ca K-edge XANES with Synchrotron Radiation"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1203.5332","kind":"arxiv","version":2},"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":"sha256:1565728be1a35ab92d97a50400641d816fb8284947ba688d5a0d93daf05251e0","target":"record","created_at":"2026-05-18T03:57:15Z","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":"ceb24a7eedd2346b80b847c405d1f344eb27951906ec80512ff19d2530977310","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.chem-ph","submitted_at":"2012-03-23T02:37:21Z","title_canon_sha256":"11ada104533b1e71fcc03cbf026cc85fb4903b938257ff1522e912ab1f8e6249"},"schema_version":"1.0","source":{"id":"1203.5332","kind":"arxiv","version":2}},"canonical_sha256":"72d03e420585a3e2371bb319f9c752e16059c1434409e596534da6ae033359e8","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"72d03e420585a3e2371bb319f9c752e16059c1434409e596534da6ae033359e8","first_computed_at":"2026-05-18T03:57:15.693454Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:57:15.693454Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"xq6XMcy9TjTgZXfnq9HNQG7IMFKtl4BxFfj75M/6lXuUevugBCZidUtRaby6ty5lbjg/iOs6wHw3IN21VEajDA==","signature_status":"signed_v1","signed_at":"2026-05-18T03:57:15.694034Z","signed_message":"canonical_sha256_bytes"},"source_id":"1203.5332","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:1565728be1a35ab92d97a50400641d816fb8284947ba688d5a0d93daf05251e0","sha256:60acd94c73fc87757fcb1da1089d215ba44d9e7d035edc9612884d5f80642b8e"],"state_sha256":"0cc3659b6c699270261c207be474eb88d8b883b77034854cb83c11e44f38302a"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"aOWt8QT9zbHq3G6RQEnezAbeB+6GpN+K4jIVE8N2deniAppJ+iARnItITrRrYSqpFHdegokFpuavn6EdHD2EAQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-03T12:50:54.353191Z","bundle_sha256":"52efc1de301de896bdf31a170aadcca1e6c36deedc4fafbb9efbe8c4d8fc07e0"}}