{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2021:LIMJRZUBVZ3I6FSQYLQ5I5N7F3","short_pith_number":"pith:LIMJRZUB","canonical_record":{"source":{"id":"2111.06397","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.space-ph","submitted_at":"2021-11-10T19:55:37Z","cross_cats_sorted":["astro-ph.EP","astro-ph.IM","physics.optics"],"title_canon_sha256":"cec41db8b300a6d9b4fc40fedd05bf71364c930ac29d37b30490a5591fa16281","abstract_canon_sha256":"9a3c49510e69c6f3eb286e692e629396d1970dc0addf21ad45917add20aa3ebc"},"schema_version":"1.0"},"canonical_sha256":"5a1898e681ae768f1650c2e1d475bf2ed148c0ba35eaa6c1b31e0f95911724c6","source":{"kind":"arxiv","id":"2111.06397","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2111.06397","created_at":"2026-07-05T03:31:04Z"},{"alias_kind":"arxiv_version","alias_value":"2111.06397v1","created_at":"2026-07-05T03:31:04Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2111.06397","created_at":"2026-07-05T03:31:04Z"},{"alias_kind":"pith_short_12","alias_value":"LIMJRZUBVZ3I","created_at":"2026-07-05T03:31:04Z"},{"alias_kind":"pith_short_16","alias_value":"LIMJRZUBVZ3I6FSQ","created_at":"2026-07-05T03:31:04Z"},{"alias_kind":"pith_short_8","alias_value":"LIMJRZUB","created_at":"2026-07-05T03:31:04Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2021:LIMJRZUBVZ3I6FSQYLQ5I5N7F3","target":"record","payload":{"canonical_record":{"source":{"id":"2111.06397","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.space-ph","submitted_at":"2021-11-10T19:55:37Z","cross_cats_sorted":["astro-ph.EP","astro-ph.IM","physics.optics"],"title_canon_sha256":"cec41db8b300a6d9b4fc40fedd05bf71364c930ac29d37b30490a5591fa16281","abstract_canon_sha256":"9a3c49510e69c6f3eb286e692e629396d1970dc0addf21ad45917add20aa3ebc"},"schema_version":"1.0"},"canonical_sha256":"5a1898e681ae768f1650c2e1d475bf2ed148c0ba35eaa6c1b31e0f95911724c6","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T03:31:04.173517Z","signature_b64":"TQc86WlJTQiZtP7ljucTh4usfg9iGm7MdRQsH0jdcu+XodHiqLCOc4lC/CCTNkz8hLy47qYnCJnfTrx0KTNoCw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"5a1898e681ae768f1650c2e1d475bf2ed148c0ba35eaa6c1b31e0f95911724c6","last_reissued_at":"2026-07-05T03:31:04.173054Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T03:31:04.173054Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2111.06397","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":"2026-07-05T03:31:04Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"G3hqyo47xYTLI7pwyAcUXyO1dqnH68gZ6k3lXXCrMcHk79JSqLuRslOPNqPZ9KdDzkFTtS/H6tBD32d2UggaAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-05T20:51:18.108242Z"},"content_sha256":"80ded30a132835ac5006ff6f1d6cb482fee30be83522232c4ddded27a6c75b35","schema_version":"1.0","event_id":"sha256:80ded30a132835ac5006ff6f1d6cb482fee30be83522232c4ddded27a6c75b35"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2021:LIMJRZUBVZ3I6FSQYLQ5I5N7F3","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Optical tweezers in a dusty universe","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["astro-ph.EP","astro-ph.IM","physics.optics"],"primary_cat":"physics.space-ph","authors_text":"A. Ciaravella, A. Foti, A. Jimenez Escobar, A. Magazzu, A. Rotundi, A. Saidi, C. Cecchi-Pestellini, D. Bronte Ciriza, E. Ammannito, G. Sindoni, I. Bertini, L. Folco, L. Inno, M. A. Iati, M. G. Donato, O. M. Marago, P. G. Gucciardi, P. Polimeno, R. Saija, V. Della Corte","submitted_at":"2021-11-10T19:55:37Z","abstract_excerpt":"Optical tweezers are powerful tools based on focused laser beams. They are able to trap, manipulate and investigate a wide range of microscopic and nanoscopic particles in different media, such as liquids, air, and vacuum. Key applications of this contactless technique have been developed in many fields. Despite this progress, optical trapping applications to planetary exploration is still to be developed. Here we describe how optical tweezers can be used to trap and characterize extraterrestrial particulate matter. In particular, we exploit light scattering theory in the T-matrix formalism to"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2111.06397","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2111.06397/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":"2026-07-05T03:31:04Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"bVMIzYAIQk3X1JRSfcAXtSu3LaAXsBi7IjErY+Xtwr/XbmzDV0OlPkqzZ6keGqXOrqcXPXFhxa3s/OYZdHeoDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-05T20:51:18.109209Z"},"content_sha256":"68c9c36fc581fa14b7d52f1b2556c1a54b561e19070182c73b44cd9642d83806","schema_version":"1.0","event_id":"sha256:68c9c36fc581fa14b7d52f1b2556c1a54b561e19070182c73b44cd9642d83806"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/LIMJRZUBVZ3I6FSQYLQ5I5N7F3/bundle.json","state_url":"https://pith.science/pith/LIMJRZUBVZ3I6FSQYLQ5I5N7F3/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/LIMJRZUBVZ3I6FSQYLQ5I5N7F3/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":"2026-08-05T20:51:18Z","links":{"resolver":"https://pith.science/pith/LIMJRZUBVZ3I6FSQYLQ5I5N7F3","bundle":"https://pith.science/pith/LIMJRZUBVZ3I6FSQYLQ5I5N7F3/bundle.json","state":"https://pith.science/pith/LIMJRZUBVZ3I6FSQYLQ5I5N7F3/state.json","well_known_bundle":"https://pith.science/.well-known/pith/LIMJRZUBVZ3I6FSQYLQ5I5N7F3/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2021:LIMJRZUBVZ3I6FSQYLQ5I5N7F3","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":"9a3c49510e69c6f3eb286e692e629396d1970dc0addf21ad45917add20aa3ebc","cross_cats_sorted":["astro-ph.EP","astro-ph.IM","physics.optics"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.space-ph","submitted_at":"2021-11-10T19:55:37Z","title_canon_sha256":"cec41db8b300a6d9b4fc40fedd05bf71364c930ac29d37b30490a5591fa16281"},"schema_version":"1.0","source":{"id":"2111.06397","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2111.06397","created_at":"2026-07-05T03:31:04Z"},{"alias_kind":"arxiv_version","alias_value":"2111.06397v1","created_at":"2026-07-05T03:31:04Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2111.06397","created_at":"2026-07-05T03:31:04Z"},{"alias_kind":"pith_short_12","alias_value":"LIMJRZUBVZ3I","created_at":"2026-07-05T03:31:04Z"},{"alias_kind":"pith_short_16","alias_value":"LIMJRZUBVZ3I6FSQ","created_at":"2026-07-05T03:31:04Z"},{"alias_kind":"pith_short_8","alias_value":"LIMJRZUB","created_at":"2026-07-05T03:31:04Z"}],"graph_snapshots":[{"event_id":"sha256:68c9c36fc581fa14b7d52f1b2556c1a54b561e19070182c73b44cd9642d83806","target":"graph","created_at":"2026-07-05T03:31:04Z","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/2111.06397/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Optical tweezers are powerful tools based on focused laser beams. They are able to trap, manipulate and investigate a wide range of microscopic and nanoscopic particles in different media, such as liquids, air, and vacuum. Key applications of this contactless technique have been developed in many fields. Despite this progress, optical trapping applications to planetary exploration is still to be developed. Here we describe how optical tweezers can be used to trap and characterize extraterrestrial particulate matter. In particular, we exploit light scattering theory in the T-matrix formalism to","authors_text":"A. Ciaravella, A. Foti, A. Jimenez Escobar, A. Magazzu, A. Rotundi, A. Saidi, C. Cecchi-Pestellini, D. Bronte Ciriza, E. Ammannito, G. Sindoni, I. Bertini, L. Folco, L. Inno, M. A. Iati, M. G. Donato, O. M. Marago, P. G. Gucciardi, P. Polimeno, R. Saija, V. Della Corte","cross_cats":["astro-ph.EP","astro-ph.IM","physics.optics"],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.space-ph","submitted_at":"2021-11-10T19:55:37Z","title":"Optical tweezers in a dusty universe"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2111.06397","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":"sha256:80ded30a132835ac5006ff6f1d6cb482fee30be83522232c4ddded27a6c75b35","target":"record","created_at":"2026-07-05T03:31:04Z","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":"9a3c49510e69c6f3eb286e692e629396d1970dc0addf21ad45917add20aa3ebc","cross_cats_sorted":["astro-ph.EP","astro-ph.IM","physics.optics"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.space-ph","submitted_at":"2021-11-10T19:55:37Z","title_canon_sha256":"cec41db8b300a6d9b4fc40fedd05bf71364c930ac29d37b30490a5591fa16281"},"schema_version":"1.0","source":{"id":"2111.06397","kind":"arxiv","version":1}},"canonical_sha256":"5a1898e681ae768f1650c2e1d475bf2ed148c0ba35eaa6c1b31e0f95911724c6","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"5a1898e681ae768f1650c2e1d475bf2ed148c0ba35eaa6c1b31e0f95911724c6","first_computed_at":"2026-07-05T03:31:04.173054Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T03:31:04.173054Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"TQc86WlJTQiZtP7ljucTh4usfg9iGm7MdRQsH0jdcu+XodHiqLCOc4lC/CCTNkz8hLy47qYnCJnfTrx0KTNoCw==","signature_status":"signed_v1","signed_at":"2026-07-05T03:31:04.173517Z","signed_message":"canonical_sha256_bytes"},"source_id":"2111.06397","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:80ded30a132835ac5006ff6f1d6cb482fee30be83522232c4ddded27a6c75b35","sha256:68c9c36fc581fa14b7d52f1b2556c1a54b561e19070182c73b44cd9642d83806"],"state_sha256":"7e9a01d973656e3b6ab075debc7e0c0032795208d9eb40a8db43130ac26e9cec"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"aJiT1qRG778XXQ84GVid6L+oy+BJa5pgi+kmNr9r3DiHRxI1iskCeFXiH+HIf6vsH3EL6f1Ep+EZqd4JB2IsCQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-05T20:51:18.114915Z","bundle_sha256":"2ad0c0b28c622481d9cce81b80d40234e71ddc6de6caab3cf735ecce0c5f2adc"}}