{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2015:XQMBATXVVOLBE6E4VD36BNGYHR","short_pith_number":"pith:XQMBATXV","canonical_record":{"source":{"id":"1508.07494","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2015-08-29T19:16:49Z","cross_cats_sorted":[],"title_canon_sha256":"7b408cd29680e37fdc61ccbbe30e081e096814004d805438a1da6646641c9bb8","abstract_canon_sha256":"20a5227ecee91b73ed428a0a6f631ebf9911e8bdda3b4feb2bed554115e470ef"},"schema_version":"1.0"},"canonical_sha256":"bc18104ef5ab9612789ca8f7e0b4d83c524e53bb08fe90628193581daf1c430c","source":{"kind":"arxiv","id":"1508.07494","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1508.07494","created_at":"2026-05-18T01:31:31Z"},{"alias_kind":"arxiv_version","alias_value":"1508.07494v1","created_at":"2026-05-18T01:31:31Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1508.07494","created_at":"2026-05-18T01:31:31Z"},{"alias_kind":"pith_short_12","alias_value":"XQMBATXVVOLB","created_at":"2026-05-18T12:29:50Z"},{"alias_kind":"pith_short_16","alias_value":"XQMBATXVVOLBE6E4","created_at":"2026-05-18T12:29:50Z"},{"alias_kind":"pith_short_8","alias_value":"XQMBATXV","created_at":"2026-05-18T12:29:50Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2015:XQMBATXVVOLBE6E4VD36BNGYHR","target":"record","payload":{"canonical_record":{"source":{"id":"1508.07494","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2015-08-29T19:16:49Z","cross_cats_sorted":[],"title_canon_sha256":"7b408cd29680e37fdc61ccbbe30e081e096814004d805438a1da6646641c9bb8","abstract_canon_sha256":"20a5227ecee91b73ed428a0a6f631ebf9911e8bdda3b4feb2bed554115e470ef"},"schema_version":"1.0"},"canonical_sha256":"bc18104ef5ab9612789ca8f7e0b4d83c524e53bb08fe90628193581daf1c430c","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:31:31.035549Z","signature_b64":"d9QF8RaHNjW50lzptJ9YNTDv9ukD/xKZh3oMp2GDtrhsK7VeSXwflyx9Sbox7eonPQbnKG7fD0uwNcc6lvEqDA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"bc18104ef5ab9612789ca8f7e0b4d83c524e53bb08fe90628193581daf1c430c","last_reissued_at":"2026-05-18T01:31:31.034960Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:31:31.034960Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1508.07494","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":"2026-05-18T01:31:31Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"IpT8yLdSXDB7nEMS6BJsRJhOR1xUfzXdYPgASyk1iBHMLCADElZkWoXAQ4f/csy5R+FEIjx3uarESBfR58HzAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-05T12:12:25.847427Z"},"content_sha256":"d7f8e511ae577bccb10972e976ca3b3683266a0e0632f4338f7185e43663be03","schema_version":"1.0","event_id":"sha256:d7f8e511ae577bccb10972e976ca3b3683266a0e0632f4338f7185e43663be03"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2015:XQMBATXVVOLBE6E4VD36BNGYHR","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Spectral calibration for deriving surface mineralogy of Asteroid (25143) Itokawa from Hayabusa Near-Infrared Spectrometer (NIRS) Data","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.EP","authors_text":"Jian-Yang Li, Juan A. Sanchez, Kris J. Becker, Lucille Le Corre, Lynn Weller, Matthew R. M. Izawa, Megha Bhatt, Tasha Dunn, Vishnu Reddy","submitted_at":"2015-08-29T19:16:49Z","abstract_excerpt":"We present spectral calibration equations for determining mafic silicate composition of near-Earth asteroid (25143) Itokawa from visible/near-infrared spectra measured using the Near Infrared Spectrometer (NIRS), on board the Japanese Hayabusa spacecraft. Itokawa was the target of the Hayabusa sample return mission and has a surface composition similar to LL-type ordinary chondrites. Existing laboratory spectral calibrations use a spectral wavelength range that is wider (0.75-2.5 microns) than that of the NIRS instrument (0.85-2.1 microns) making them unfit for interpreting the Hayabusa spectr"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1508.07494","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":"2026-05-18T01:31:31Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"LDXeYhdiFg/JOi/RylNLRDJIcK0+cWPhKC2xLO5G7XiAQIaTZaAQ4hRTYE7ryzwqsI4F3FCmmrc9SXLp/wQICQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-05T12:12:25.847784Z"},"content_sha256":"e8b3c3d38d8a021c278fc449a6330ffc643f3d25ff1296b86dc6415c853b9290","schema_version":"1.0","event_id":"sha256:e8b3c3d38d8a021c278fc449a6330ffc643f3d25ff1296b86dc6415c853b9290"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/XQMBATXVVOLBE6E4VD36BNGYHR/bundle.json","state_url":"https://pith.science/pith/XQMBATXVVOLBE6E4VD36BNGYHR/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/XQMBATXVVOLBE6E4VD36BNGYHR/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":"2026-06-05T12:12:25Z","links":{"resolver":"https://pith.science/pith/XQMBATXVVOLBE6E4VD36BNGYHR","bundle":"https://pith.science/pith/XQMBATXVVOLBE6E4VD36BNGYHR/bundle.json","state":"https://pith.science/pith/XQMBATXVVOLBE6E4VD36BNGYHR/state.json","well_known_bundle":"https://pith.science/.well-known/pith/XQMBATXVVOLBE6E4VD36BNGYHR/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:XQMBATXVVOLBE6E4VD36BNGYHR","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":"20a5227ecee91b73ed428a0a6f631ebf9911e8bdda3b4feb2bed554115e470ef","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2015-08-29T19:16:49Z","title_canon_sha256":"7b408cd29680e37fdc61ccbbe30e081e096814004d805438a1da6646641c9bb8"},"schema_version":"1.0","source":{"id":"1508.07494","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1508.07494","created_at":"2026-05-18T01:31:31Z"},{"alias_kind":"arxiv_version","alias_value":"1508.07494v1","created_at":"2026-05-18T01:31:31Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1508.07494","created_at":"2026-05-18T01:31:31Z"},{"alias_kind":"pith_short_12","alias_value":"XQMBATXVVOLB","created_at":"2026-05-18T12:29:50Z"},{"alias_kind":"pith_short_16","alias_value":"XQMBATXVVOLBE6E4","created_at":"2026-05-18T12:29:50Z"},{"alias_kind":"pith_short_8","alias_value":"XQMBATXV","created_at":"2026-05-18T12:29:50Z"}],"graph_snapshots":[{"event_id":"sha256:e8b3c3d38d8a021c278fc449a6330ffc643f3d25ff1296b86dc6415c853b9290","target":"graph","created_at":"2026-05-18T01:31:31Z","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":"We present spectral calibration equations for determining mafic silicate composition of near-Earth asteroid (25143) Itokawa from visible/near-infrared spectra measured using the Near Infrared Spectrometer (NIRS), on board the Japanese Hayabusa spacecraft. Itokawa was the target of the Hayabusa sample return mission and has a surface composition similar to LL-type ordinary chondrites. Existing laboratory spectral calibrations use a spectral wavelength range that is wider (0.75-2.5 microns) than that of the NIRS instrument (0.85-2.1 microns) making them unfit for interpreting the Hayabusa spectr","authors_text":"Jian-Yang Li, Juan A. Sanchez, Kris J. Becker, Lucille Le Corre, Lynn Weller, Matthew R. M. Izawa, Megha Bhatt, Tasha Dunn, Vishnu Reddy","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2015-08-29T19:16:49Z","title":"Spectral calibration for deriving surface mineralogy of Asteroid (25143) Itokawa from Hayabusa Near-Infrared Spectrometer (NIRS) Data"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1508.07494","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:d7f8e511ae577bccb10972e976ca3b3683266a0e0632f4338f7185e43663be03","target":"record","created_at":"2026-05-18T01:31:31Z","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":"20a5227ecee91b73ed428a0a6f631ebf9911e8bdda3b4feb2bed554115e470ef","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2015-08-29T19:16:49Z","title_canon_sha256":"7b408cd29680e37fdc61ccbbe30e081e096814004d805438a1da6646641c9bb8"},"schema_version":"1.0","source":{"id":"1508.07494","kind":"arxiv","version":1}},"canonical_sha256":"bc18104ef5ab9612789ca8f7e0b4d83c524e53bb08fe90628193581daf1c430c","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"bc18104ef5ab9612789ca8f7e0b4d83c524e53bb08fe90628193581daf1c430c","first_computed_at":"2026-05-18T01:31:31.034960Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:31:31.034960Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"d9QF8RaHNjW50lzptJ9YNTDv9ukD/xKZh3oMp2GDtrhsK7VeSXwflyx9Sbox7eonPQbnKG7fD0uwNcc6lvEqDA==","signature_status":"signed_v1","signed_at":"2026-05-18T01:31:31.035549Z","signed_message":"canonical_sha256_bytes"},"source_id":"1508.07494","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:d7f8e511ae577bccb10972e976ca3b3683266a0e0632f4338f7185e43663be03","sha256:e8b3c3d38d8a021c278fc449a6330ffc643f3d25ff1296b86dc6415c853b9290"],"state_sha256":"c57748b920ff9bcce596dc090ac7d84e25d722e8a8e47a392a6cef25f35c3026"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"jSnyOsqacmU5ER4LYlkhGj5oLJWNfOTfpPKxSAd2BEuC0VD+V6Gsl5wTWME0S3lTgHQjQ/Bo5wQS7zK9k+CADQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-05T12:12:25.849838Z","bundle_sha256":"de50faa2a1483bea2f3d06d0e168e022aac163b51aa5b86c44546c22f4c8c5a9"}}