{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2016:TSAEKPRBNZ4AO4HFGQA4N5JVBF","short_pith_number":"pith:TSAEKPRB","canonical_record":{"source":{"id":"1609.01944","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.atm-clus","submitted_at":"2016-09-07T11:30:37Z","cross_cats_sorted":["cond-mat.mes-hall"],"title_canon_sha256":"e80a54c7a093ba95d016bcc9821e9ca6f3589b48b931bfca12dfbbe363f8d0d3","abstract_canon_sha256":"671ca122ec8059574ef6ab6321c4f640d1a00520b5fb534c4413a82a6df04215"},"schema_version":"1.0"},"canonical_sha256":"9c80453e216e780770e53401c6f5350949df1f81f3f091c4443911ca5877e821","source":{"kind":"arxiv","id":"1609.01944","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1609.01944","created_at":"2026-05-18T01:04:17Z"},{"alias_kind":"arxiv_version","alias_value":"1609.01944v1","created_at":"2026-05-18T01:04:17Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1609.01944","created_at":"2026-05-18T01:04:17Z"},{"alias_kind":"pith_short_12","alias_value":"TSAEKPRBNZ4A","created_at":"2026-05-18T12:30:46Z"},{"alias_kind":"pith_short_16","alias_value":"TSAEKPRBNZ4AO4HF","created_at":"2026-05-18T12:30:46Z"},{"alias_kind":"pith_short_8","alias_value":"TSAEKPRB","created_at":"2026-05-18T12:30:46Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2016:TSAEKPRBNZ4AO4HFGQA4N5JVBF","target":"record","payload":{"canonical_record":{"source":{"id":"1609.01944","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.atm-clus","submitted_at":"2016-09-07T11:30:37Z","cross_cats_sorted":["cond-mat.mes-hall"],"title_canon_sha256":"e80a54c7a093ba95d016bcc9821e9ca6f3589b48b931bfca12dfbbe363f8d0d3","abstract_canon_sha256":"671ca122ec8059574ef6ab6321c4f640d1a00520b5fb534c4413a82a6df04215"},"schema_version":"1.0"},"canonical_sha256":"9c80453e216e780770e53401c6f5350949df1f81f3f091c4443911ca5877e821","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:04:17.417599Z","signature_b64":"5ihuf1t07vT1eOxukxFZx7C56gD/dUXZxq8QZ4N+29gTuqVl8icHgv7yRx0u4GYFx1+kNJJkopmnWR+bb7evCQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"9c80453e216e780770e53401c6f5350949df1f81f3f091c4443911ca5877e821","last_reissued_at":"2026-05-18T01:04:17.417067Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:04:17.417067Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1609.01944","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":"2026-05-18T01:04:17Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"hS+OMPbIYAuT+7K/68NOAcpujjI1GJMtYkAGyJ1O85w0AjN0+FDHWgi5hquVc0URf7+ObuhaaFSHTB+oELPvAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-02T04:24:01.338053Z"},"content_sha256":"3d1b874ecfe4caf376cb592c516a9afb07bee60284d417d1f452ce2162fd348b","schema_version":"1.0","event_id":"sha256:3d1b874ecfe4caf376cb592c516a9afb07bee60284d417d1f452ce2162fd348b"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2016:TSAEKPRBNZ4AO4HFGQA4N5JVBF","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Evolution of clusters in energetic heavy ion bombarded amorphous graphite","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.mes-hall"],"primary_cat":"physics.atm-clus","authors_text":"Bashir Ahmad, M.N. Akhtar, Shoaib Ahmad","submitted_at":"2016-09-07T11:30:37Z","abstract_excerpt":"Carbon clusters have been generated by a novel technique of energetic heavy ion bombardment of amorphous graphite. The evolution of clusters and their subsequent fragmentation under continuing ion bombardment is revealed by detecting various clusters in the energy spectra of the direct recoils emitted as a result of collision between ions and the surface constituents."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1609.01944","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":"2026-05-18T01:04:17Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"KdK5/j11Z0oSZF0EbUClYMH/snb7TRYe0ogV7Vw36ySBok4Sy6HhnTD5+JgFMHTkDmLqOANdti4CfKecroxECg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-02T04:24:01.338403Z"},"content_sha256":"a9f1b62962732562f85db2fa96d3cd566590933866dab0c025eac9075d1a8d41","schema_version":"1.0","event_id":"sha256:a9f1b62962732562f85db2fa96d3cd566590933866dab0c025eac9075d1a8d41"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/TSAEKPRBNZ4AO4HFGQA4N5JVBF/bundle.json","state_url":"https://pith.science/pith/TSAEKPRBNZ4AO4HFGQA4N5JVBF/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/TSAEKPRBNZ4AO4HFGQA4N5JVBF/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":"2026-06-02T04:24:01Z","links":{"resolver":"https://pith.science/pith/TSAEKPRBNZ4AO4HFGQA4N5JVBF","bundle":"https://pith.science/pith/TSAEKPRBNZ4AO4HFGQA4N5JVBF/bundle.json","state":"https://pith.science/pith/TSAEKPRBNZ4AO4HFGQA4N5JVBF/state.json","well_known_bundle":"https://pith.science/.well-known/pith/TSAEKPRBNZ4AO4HFGQA4N5JVBF/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:TSAEKPRBNZ4AO4HFGQA4N5JVBF","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":"671ca122ec8059574ef6ab6321c4f640d1a00520b5fb534c4413a82a6df04215","cross_cats_sorted":["cond-mat.mes-hall"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.atm-clus","submitted_at":"2016-09-07T11:30:37Z","title_canon_sha256":"e80a54c7a093ba95d016bcc9821e9ca6f3589b48b931bfca12dfbbe363f8d0d3"},"schema_version":"1.0","source":{"id":"1609.01944","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1609.01944","created_at":"2026-05-18T01:04:17Z"},{"alias_kind":"arxiv_version","alias_value":"1609.01944v1","created_at":"2026-05-18T01:04:17Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1609.01944","created_at":"2026-05-18T01:04:17Z"},{"alias_kind":"pith_short_12","alias_value":"TSAEKPRBNZ4A","created_at":"2026-05-18T12:30:46Z"},{"alias_kind":"pith_short_16","alias_value":"TSAEKPRBNZ4AO4HF","created_at":"2026-05-18T12:30:46Z"},{"alias_kind":"pith_short_8","alias_value":"TSAEKPRB","created_at":"2026-05-18T12:30:46Z"}],"graph_snapshots":[{"event_id":"sha256:a9f1b62962732562f85db2fa96d3cd566590933866dab0c025eac9075d1a8d41","target":"graph","created_at":"2026-05-18T01:04:17Z","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":"Carbon clusters have been generated by a novel technique of energetic heavy ion bombardment of amorphous graphite. The evolution of clusters and their subsequent fragmentation under continuing ion bombardment is revealed by detecting various clusters in the energy spectra of the direct recoils emitted as a result of collision between ions and the surface constituents.","authors_text":"Bashir Ahmad, M.N. Akhtar, Shoaib Ahmad","cross_cats":["cond-mat.mes-hall"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.atm-clus","submitted_at":"2016-09-07T11:30:37Z","title":"Evolution of clusters in energetic heavy ion bombarded amorphous graphite"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1609.01944","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":"sha256:3d1b874ecfe4caf376cb592c516a9afb07bee60284d417d1f452ce2162fd348b","target":"record","created_at":"2026-05-18T01:04:17Z","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":"671ca122ec8059574ef6ab6321c4f640d1a00520b5fb534c4413a82a6df04215","cross_cats_sorted":["cond-mat.mes-hall"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.atm-clus","submitted_at":"2016-09-07T11:30:37Z","title_canon_sha256":"e80a54c7a093ba95d016bcc9821e9ca6f3589b48b931bfca12dfbbe363f8d0d3"},"schema_version":"1.0","source":{"id":"1609.01944","kind":"arxiv","version":1}},"canonical_sha256":"9c80453e216e780770e53401c6f5350949df1f81f3f091c4443911ca5877e821","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"9c80453e216e780770e53401c6f5350949df1f81f3f091c4443911ca5877e821","first_computed_at":"2026-05-18T01:04:17.417067Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:04:17.417067Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"5ihuf1t07vT1eOxukxFZx7C56gD/dUXZxq8QZ4N+29gTuqVl8icHgv7yRx0u4GYFx1+kNJJkopmnWR+bb7evCQ==","signature_status":"signed_v1","signed_at":"2026-05-18T01:04:17.417599Z","signed_message":"canonical_sha256_bytes"},"source_id":"1609.01944","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:3d1b874ecfe4caf376cb592c516a9afb07bee60284d417d1f452ce2162fd348b","sha256:a9f1b62962732562f85db2fa96d3cd566590933866dab0c025eac9075d1a8d41"],"state_sha256":"7d3bdfbc8c88510dd18ba42526420cdc4efccd04a577c9ef59a42ac0fc30e4c7"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"XOGsgbFZMheRq/RJua8/yBi3Fp/IlQE6uTgd0JVlh0Xsd6uPKrJPWGbfHermyVQ4/dwtF+8vUw2f/UOhpDMGCw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-02T04:24:01.340176Z","bundle_sha256":"594872b110fb86cb65e889c56d4feed0a988e99c0938e54fd809a3ec7eb69eb3"}}