{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2021:HV2SAFQYTGDTCLAF4ME62DAWWT","short_pith_number":"pith:HV2SAFQY","canonical_record":{"source":{"id":"2110.10190","kind":"arxiv","version":2},"metadata":{"license":"http://creativecommons.org/licenses/by-nc-sa/4.0/","primary_cat":"astro-ph.GA","submitted_at":"2021-10-19T18:13:14Z","cross_cats_sorted":[],"title_canon_sha256":"8189adf272ae528a0a71155a9b23efc16b14308d55903688fb60dc8b6d9faf7c","abstract_canon_sha256":"381bce8c94c19e976f09472c35d2dc2fe08430fd03c95a02486de342d9505750"},"schema_version":"1.0"},"canonical_sha256":"3d752016189987312c05e309ed0c16b4f768b290b183b865863a8b1883e17de3","source":{"kind":"arxiv","id":"2110.10190","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2110.10190","created_at":"2026-07-05T04:19:37Z"},{"alias_kind":"arxiv_version","alias_value":"2110.10190v2","created_at":"2026-07-05T04:19:37Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2110.10190","created_at":"2026-07-05T04:19:37Z"},{"alias_kind":"pith_short_12","alias_value":"HV2SAFQYTGDT","created_at":"2026-07-05T04:19:37Z"},{"alias_kind":"pith_short_16","alias_value":"HV2SAFQYTGDTCLAF","created_at":"2026-07-05T04:19:37Z"},{"alias_kind":"pith_short_8","alias_value":"HV2SAFQY","created_at":"2026-07-05T04:19:37Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2021:HV2SAFQYTGDTCLAF4ME62DAWWT","target":"record","payload":{"canonical_record":{"source":{"id":"2110.10190","kind":"arxiv","version":2},"metadata":{"license":"http://creativecommons.org/licenses/by-nc-sa/4.0/","primary_cat":"astro-ph.GA","submitted_at":"2021-10-19T18:13:14Z","cross_cats_sorted":[],"title_canon_sha256":"8189adf272ae528a0a71155a9b23efc16b14308d55903688fb60dc8b6d9faf7c","abstract_canon_sha256":"381bce8c94c19e976f09472c35d2dc2fe08430fd03c95a02486de342d9505750"},"schema_version":"1.0"},"canonical_sha256":"3d752016189987312c05e309ed0c16b4f768b290b183b865863a8b1883e17de3","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T04:19:37.545883Z","signature_b64":"Xl0uirbeCKsmnRaqc0G33NKYG+/ikT0NE0fZEYEgJolxPwn5B3ZTr8UVflAZEuNdtXYTc8ssoOOsAxM6lhvWBA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"3d752016189987312c05e309ed0c16b4f768b290b183b865863a8b1883e17de3","last_reissued_at":"2026-07-05T04:19:37.545367Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T04:19:37.545367Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2110.10190","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":"2026-07-05T04:19:37Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"M0mqumI+OpaRA0c/GaM2lScFTk5L5kwsrIenwshNnSptYGnVfuP8p6IfVg6FZmDBa7VZEBv/LGiIVJZ5WvOPCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-05T15:42:42.230467Z"},"content_sha256":"118f350f22ca9ac2fd8e16e567123d5e1c508b41e632941acd39afef664fc382","schema_version":"1.0","event_id":"sha256:118f350f22ca9ac2fd8e16e567123d5e1c508b41e632941acd39afef664fc382"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2021:HV2SAFQYTGDTCLAF4ME62DAWWT","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Modelling simple stellar populations in the near-ultraviolet to near-infrared with the X-shooter Spectral Library (XSL)","license":"http://creativecommons.org/licenses/by-nc-sa/4.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"A. Arentsen, A. Gonneau, A. Lan\\c{c}on, A. Vazdekis, J. Falc\\'on-Barroso, Kristiina Verro, L. Martins, M. Dries, M. Lyubenova, P. Prugniel, P. R. T. Coelho, P. S\\'anchez-Bl\\'azquez, R. F. Peletier, S. C. Trager, Y.-P. Chen","submitted_at":"2021-10-19T18:13:14Z","abstract_excerpt":"We present simple stellar population models based on the empirical X-shooter Spectral Library (XSL) from NUV to NIR wavelengths. The unmatched characteristics of relatively high resolution and extended wavelength coverage ($350-2480$ nm, $R\\sim10\\,000$) of the XSL population models bring us closer to bridging optical and NIR studies of intermediate and old stellar populations. It is now common to find good agreement between observed and predicted NUV and optical properties of stellar clusters due to our good understanding of the main-sequence and early giant phases of stars. However, NIR spect"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2110.10190","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/2110.10190/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":"2026-07-05T04:19:37Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"l+2+9KoDwghgHC2bFkhHRq72j4I7QV43Xh2cjgk4oa54pJQITXyjUIQKthaucEa3D2S8OX22a8dTstuYgTdMAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-05T15:42:42.230849Z"},"content_sha256":"3e54484cd3c683f0157479da009d353e4120a0282ff673b7a5838ba2247c8e4d","schema_version":"1.0","event_id":"sha256:3e54484cd3c683f0157479da009d353e4120a0282ff673b7a5838ba2247c8e4d"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/HV2SAFQYTGDTCLAF4ME62DAWWT/bundle.json","state_url":"https://pith.science/pith/HV2SAFQYTGDTCLAF4ME62DAWWT/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/HV2SAFQYTGDTCLAF4ME62DAWWT/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":"2026-07-05T15:42:42Z","links":{"resolver":"https://pith.science/pith/HV2SAFQYTGDTCLAF4ME62DAWWT","bundle":"https://pith.science/pith/HV2SAFQYTGDTCLAF4ME62DAWWT/bundle.json","state":"https://pith.science/pith/HV2SAFQYTGDTCLAF4ME62DAWWT/state.json","well_known_bundle":"https://pith.science/.well-known/pith/HV2SAFQYTGDTCLAF4ME62DAWWT/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2021:HV2SAFQYTGDTCLAF4ME62DAWWT","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":"381bce8c94c19e976f09472c35d2dc2fe08430fd03c95a02486de342d9505750","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by-nc-sa/4.0/","primary_cat":"astro-ph.GA","submitted_at":"2021-10-19T18:13:14Z","title_canon_sha256":"8189adf272ae528a0a71155a9b23efc16b14308d55903688fb60dc8b6d9faf7c"},"schema_version":"1.0","source":{"id":"2110.10190","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2110.10190","created_at":"2026-07-05T04:19:37Z"},{"alias_kind":"arxiv_version","alias_value":"2110.10190v2","created_at":"2026-07-05T04:19:37Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2110.10190","created_at":"2026-07-05T04:19:37Z"},{"alias_kind":"pith_short_12","alias_value":"HV2SAFQYTGDT","created_at":"2026-07-05T04:19:37Z"},{"alias_kind":"pith_short_16","alias_value":"HV2SAFQYTGDTCLAF","created_at":"2026-07-05T04:19:37Z"},{"alias_kind":"pith_short_8","alias_value":"HV2SAFQY","created_at":"2026-07-05T04:19:37Z"}],"graph_snapshots":[{"event_id":"sha256:3e54484cd3c683f0157479da009d353e4120a0282ff673b7a5838ba2247c8e4d","target":"graph","created_at":"2026-07-05T04:19:37Z","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/2110.10190/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We present simple stellar population models based on the empirical X-shooter Spectral Library (XSL) from NUV to NIR wavelengths. The unmatched characteristics of relatively high resolution and extended wavelength coverage ($350-2480$ nm, $R\\sim10\\,000$) of the XSL population models bring us closer to bridging optical and NIR studies of intermediate and old stellar populations. It is now common to find good agreement between observed and predicted NUV and optical properties of stellar clusters due to our good understanding of the main-sequence and early giant phases of stars. However, NIR spect","authors_text":"A. Arentsen, A. Gonneau, A. Lan\\c{c}on, A. Vazdekis, J. Falc\\'on-Barroso, Kristiina Verro, L. Martins, M. Dries, M. Lyubenova, P. Prugniel, P. R. T. Coelho, P. S\\'anchez-Bl\\'azquez, R. F. Peletier, S. C. Trager, Y.-P. Chen","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by-nc-sa/4.0/","primary_cat":"astro-ph.GA","submitted_at":"2021-10-19T18:13:14Z","title":"Modelling simple stellar populations in the near-ultraviolet to near-infrared with the X-shooter Spectral Library (XSL)"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2110.10190","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":"sha256:118f350f22ca9ac2fd8e16e567123d5e1c508b41e632941acd39afef664fc382","target":"record","created_at":"2026-07-05T04:19:37Z","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":"381bce8c94c19e976f09472c35d2dc2fe08430fd03c95a02486de342d9505750","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by-nc-sa/4.0/","primary_cat":"astro-ph.GA","submitted_at":"2021-10-19T18:13:14Z","title_canon_sha256":"8189adf272ae528a0a71155a9b23efc16b14308d55903688fb60dc8b6d9faf7c"},"schema_version":"1.0","source":{"id":"2110.10190","kind":"arxiv","version":2}},"canonical_sha256":"3d752016189987312c05e309ed0c16b4f768b290b183b865863a8b1883e17de3","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"3d752016189987312c05e309ed0c16b4f768b290b183b865863a8b1883e17de3","first_computed_at":"2026-07-05T04:19:37.545367Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T04:19:37.545367Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Xl0uirbeCKsmnRaqc0G33NKYG+/ikT0NE0fZEYEgJolxPwn5B3ZTr8UVflAZEuNdtXYTc8ssoOOsAxM6lhvWBA==","signature_status":"signed_v1","signed_at":"2026-07-05T04:19:37.545883Z","signed_message":"canonical_sha256_bytes"},"source_id":"2110.10190","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:118f350f22ca9ac2fd8e16e567123d5e1c508b41e632941acd39afef664fc382","sha256:3e54484cd3c683f0157479da009d353e4120a0282ff673b7a5838ba2247c8e4d"],"state_sha256":"a6e2b820488b42226e99b18acb538df6effd369ac58343ee64264bb511f0d9cb"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"EAVnexCOfDOWbQ0WRSeLO6j6UpEaHjCdwCpJ7EkhPo8j29+4cu4lN3RSrESZpGzOVxeORbns8pKcf6X64SkxCw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-05T15:42:42.233064Z","bundle_sha256":"4eb1f67d835e9066b93d2fd7e44847ce306535d31ba0103f8c8670e68e9c0216"}}