{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2020:ZDOOJPD44QEOOUDLOLWHOJNDOK","short_pith_number":"pith:ZDOOJPD4","canonical_record":{"source":{"id":"2005.08295","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.geo-ph","submitted_at":"2020-05-17T16:53:53Z","cross_cats_sorted":["physics.ins-det"],"title_canon_sha256":"ba147cf64ac31d5dd80eacb2910a58ee1bf0443c9c1889cf18bdf99915a6f4af","abstract_canon_sha256":"774653e24c92ae6311a6be05e349de88b9331c66b2bbfb2f337921d7d6132109"},"schema_version":"1.0"},"canonical_sha256":"c8dce4bc7ce408e7506b72ec7725a372857c643c0ea842f942e57b51506555c3","source":{"kind":"arxiv","id":"2005.08295","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2005.08295","created_at":"2026-07-05T02:24:29Z"},{"alias_kind":"arxiv_version","alias_value":"2005.08295v2","created_at":"2026-07-05T02:24:29Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2005.08295","created_at":"2026-07-05T02:24:29Z"},{"alias_kind":"pith_short_12","alias_value":"ZDOOJPD44QEO","created_at":"2026-07-05T02:24:29Z"},{"alias_kind":"pith_short_16","alias_value":"ZDOOJPD44QEOOUDL","created_at":"2026-07-05T02:24:29Z"},{"alias_kind":"pith_short_8","alias_value":"ZDOOJPD4","created_at":"2026-07-05T02:24:29Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2020:ZDOOJPD44QEOOUDLOLWHOJNDOK","target":"record","payload":{"canonical_record":{"source":{"id":"2005.08295","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.geo-ph","submitted_at":"2020-05-17T16:53:53Z","cross_cats_sorted":["physics.ins-det"],"title_canon_sha256":"ba147cf64ac31d5dd80eacb2910a58ee1bf0443c9c1889cf18bdf99915a6f4af","abstract_canon_sha256":"774653e24c92ae6311a6be05e349de88b9331c66b2bbfb2f337921d7d6132109"},"schema_version":"1.0"},"canonical_sha256":"c8dce4bc7ce408e7506b72ec7725a372857c643c0ea842f942e57b51506555c3","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T02:24:29.139047Z","signature_b64":"J+K1ya29/cfm122rOIezTeKub35QrCWXLKzjUI9kVh7yMz6Fk9wk/3fjR8pmlQtJL6wFWy+TWi+9nUfPHXH4Dw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"c8dce4bc7ce408e7506b72ec7725a372857c643c0ea842f942e57b51506555c3","last_reissued_at":"2026-07-05T02:24:29.138639Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T02:24:29.138639Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2005.08295","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":"2026-07-05T02:24:29Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"6k96ufDRPVtGObf9TVaYcJI/eU77vncKWzdp8OWZAZM2pSjys4ev9zyPT1+adpH2tokLgJ19g3aVIveF/50kCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-09T02:01:35.990153Z"},"content_sha256":"0f30852045e379108afea05cd6451f3495ac41f068cbc025f6a75a8fc65a5565","schema_version":"1.0","event_id":"sha256:0f30852045e379108afea05cd6451f3495ac41f068cbc025f6a75a8fc65a5565"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2020:ZDOOJPD44QEOOUDLOLWHOJNDOK","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Simulated Annealing for Volcano Muography","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["physics.ins-det"],"primary_cat":"physics.geo-ph","authors_text":"A. Vesga-Ram\\'irez, D. Sierra-Porta, H. Asorey, J.D. Sanabria-G\\'omez, L.A. N\\'u\\~nez, L. Arana-Salinas, R. Calder\\'on-Ardila, V. A. Kudryavtsev","submitted_at":"2020-05-17T16:53:53Z","abstract_excerpt":"Muography or muon radiography is a non-invasive emerging image technology relying on high energy atmospheric muons, which complements other standard geophysical tools to understand the Earth's subsurface. This work discusses a geophysical inversion methodology for volcanic muography, based on the Simulated Annealing algorithm, using a semi-empirical model of the muon flux to reach the volcano topography and a framework for the energy loss of muons in rock. The Metropolis-Simulated-Annealing algorithm starts from an 'observed' muon flux and obtains the best associated inner density distribution"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2005.08295","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2005.08295/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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":"2026-07-05T02:24:29Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"tLxLJJK4bz07lVSyGNrj6xs96IGCjq8sMU7zM03kmHjDJUXpJo01k6/XHXcnd34fy0U8e2OgSTifr5cQMxbmAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-09T02:01:35.990554Z"},"content_sha256":"5ab7e6209ad632390afa9438cf7df42ae1b0f3823cf9e88e33b9cfd72daf0737","schema_version":"1.0","event_id":"sha256:5ab7e6209ad632390afa9438cf7df42ae1b0f3823cf9e88e33b9cfd72daf0737"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/ZDOOJPD44QEOOUDLOLWHOJNDOK/bundle.json","state_url":"https://pith.science/pith/ZDOOJPD44QEOOUDLOLWHOJNDOK/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/ZDOOJPD44QEOOUDLOLWHOJNDOK/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":"2026-07-09T02:01:35Z","links":{"resolver":"https://pith.science/pith/ZDOOJPD44QEOOUDLOLWHOJNDOK","bundle":"https://pith.science/pith/ZDOOJPD44QEOOUDLOLWHOJNDOK/bundle.json","state":"https://pith.science/pith/ZDOOJPD44QEOOUDLOLWHOJNDOK/state.json","well_known_bundle":"https://pith.science/.well-known/pith/ZDOOJPD44QEOOUDLOLWHOJNDOK/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2020:ZDOOJPD44QEOOUDLOLWHOJNDOK","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":"774653e24c92ae6311a6be05e349de88b9331c66b2bbfb2f337921d7d6132109","cross_cats_sorted":["physics.ins-det"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.geo-ph","submitted_at":"2020-05-17T16:53:53Z","title_canon_sha256":"ba147cf64ac31d5dd80eacb2910a58ee1bf0443c9c1889cf18bdf99915a6f4af"},"schema_version":"1.0","source":{"id":"2005.08295","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2005.08295","created_at":"2026-07-05T02:24:29Z"},{"alias_kind":"arxiv_version","alias_value":"2005.08295v2","created_at":"2026-07-05T02:24:29Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2005.08295","created_at":"2026-07-05T02:24:29Z"},{"alias_kind":"pith_short_12","alias_value":"ZDOOJPD44QEO","created_at":"2026-07-05T02:24:29Z"},{"alias_kind":"pith_short_16","alias_value":"ZDOOJPD44QEOOUDL","created_at":"2026-07-05T02:24:29Z"},{"alias_kind":"pith_short_8","alias_value":"ZDOOJPD4","created_at":"2026-07-05T02:24:29Z"}],"graph_snapshots":[{"event_id":"sha256:5ab7e6209ad632390afa9438cf7df42ae1b0f3823cf9e88e33b9cfd72daf0737","target":"graph","created_at":"2026-07-05T02:24:29Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/2005.08295/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Muography or muon radiography is a non-invasive emerging image technology relying on high energy atmospheric muons, which complements other standard geophysical tools to understand the Earth's subsurface. This work discusses a geophysical inversion methodology for volcanic muography, based on the Simulated Annealing algorithm, using a semi-empirical model of the muon flux to reach the volcano topography and a framework for the energy loss of muons in rock. The Metropolis-Simulated-Annealing algorithm starts from an 'observed' muon flux and obtains the best associated inner density distribution","authors_text":"A. Vesga-Ram\\'irez, D. Sierra-Porta, H. Asorey, J.D. Sanabria-G\\'omez, L.A. N\\'u\\~nez, L. Arana-Salinas, R. Calder\\'on-Ardila, V. A. Kudryavtsev","cross_cats":["physics.ins-det"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.geo-ph","submitted_at":"2020-05-17T16:53:53Z","title":"Simulated Annealing for Volcano Muography"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2005.08295","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":"sha256:0f30852045e379108afea05cd6451f3495ac41f068cbc025f6a75a8fc65a5565","target":"record","created_at":"2026-07-05T02:24:29Z","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":"774653e24c92ae6311a6be05e349de88b9331c66b2bbfb2f337921d7d6132109","cross_cats_sorted":["physics.ins-det"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.geo-ph","submitted_at":"2020-05-17T16:53:53Z","title_canon_sha256":"ba147cf64ac31d5dd80eacb2910a58ee1bf0443c9c1889cf18bdf99915a6f4af"},"schema_version":"1.0","source":{"id":"2005.08295","kind":"arxiv","version":2}},"canonical_sha256":"c8dce4bc7ce408e7506b72ec7725a372857c643c0ea842f942e57b51506555c3","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"c8dce4bc7ce408e7506b72ec7725a372857c643c0ea842f942e57b51506555c3","first_computed_at":"2026-07-05T02:24:29.138639Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T02:24:29.138639Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"J+K1ya29/cfm122rOIezTeKub35QrCWXLKzjUI9kVh7yMz6Fk9wk/3fjR8pmlQtJL6wFWy+TWi+9nUfPHXH4Dw==","signature_status":"signed_v1","signed_at":"2026-07-05T02:24:29.139047Z","signed_message":"canonical_sha256_bytes"},"source_id":"2005.08295","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:0f30852045e379108afea05cd6451f3495ac41f068cbc025f6a75a8fc65a5565","sha256:5ab7e6209ad632390afa9438cf7df42ae1b0f3823cf9e88e33b9cfd72daf0737"],"state_sha256":"585e9f8e62fa42409f35210d55eb2657aa8c27d9d5b53c016db1f936af2a6026"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"YEgmaIJkcIx9ycnci/6llXNpy/EVgOIKQGGICRw7i10vnG6b0ZKzJFBFNdDCBzVKMdt5ccyzZJP/gDftGNWkBg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-09T02:01:35.992632Z","bundle_sha256":"a6b56278b61b94dd72b0edee739665bc98f864639dab7846a8833d6816894d36"}}