{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2012:LL7AWQAIGIZ5VPOO2I2NVD5TUV","short_pith_number":"pith:LL7AWQAI","canonical_record":{"source":{"id":"1209.6127","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2012-09-27T05:29:56Z","cross_cats_sorted":["astro-ph.CO","astro-ph.EP"],"title_canon_sha256":"0b7fe8d173b2f83ed53d55415ad56c292d3a42d984bfb91e80fd5e11084ca49a","abstract_canon_sha256":"eb83951d19434ab82ed4e0e4a355524aa926fd9ce9b30768ee66935dcff678e9"},"schema_version":"1.0"},"canonical_sha256":"5afe0b40083233dabdced234da8fb3a542da842003d9c54ef7349bc5e5340fdc","source":{"kind":"arxiv","id":"1209.6127","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1209.6127","created_at":"2026-05-18T03:39:51Z"},{"alias_kind":"arxiv_version","alias_value":"1209.6127v2","created_at":"2026-05-18T03:39:51Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1209.6127","created_at":"2026-05-18T03:39:51Z"},{"alias_kind":"pith_short_12","alias_value":"LL7AWQAIGIZ5","created_at":"2026-05-18T12:27:14Z"},{"alias_kind":"pith_short_16","alias_value":"LL7AWQAIGIZ5VPOO","created_at":"2026-05-18T12:27:14Z"},{"alias_kind":"pith_short_8","alias_value":"LL7AWQAI","created_at":"2026-05-18T12:27:14Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2012:LL7AWQAIGIZ5VPOO2I2NVD5TUV","target":"record","payload":{"canonical_record":{"source":{"id":"1209.6127","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2012-09-27T05:29:56Z","cross_cats_sorted":["astro-ph.CO","astro-ph.EP"],"title_canon_sha256":"0b7fe8d173b2f83ed53d55415ad56c292d3a42d984bfb91e80fd5e11084ca49a","abstract_canon_sha256":"eb83951d19434ab82ed4e0e4a355524aa926fd9ce9b30768ee66935dcff678e9"},"schema_version":"1.0"},"canonical_sha256":"5afe0b40083233dabdced234da8fb3a542da842003d9c54ef7349bc5e5340fdc","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:39:51.590477Z","signature_b64":"QBXn4EsznhY/IHnnps0Wd3q45p1P70q6gZP26k/zEymDoZOjyJz9vqo7PRWM+vGpTzziKHTVLnToZEkZvkWpAQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"5afe0b40083233dabdced234da8fb3a542da842003d9c54ef7349bc5e5340fdc","last_reissued_at":"2026-05-18T03:39:51.589483Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:39:51.589483Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1209.6127","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":"2026-05-18T03:39:51Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"V2Hcfru5qwZ2GZcs+hThDP8nFHRbMuyFC6yM+OCW587ch1LSqvAC8BdZuKIwZoyUqpDu5XOlx9UD/SqNJNv9Aw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T17:18:50.320524Z"},"content_sha256":"5a8427b30c5349ae8831ebd85594ee1111095d8a586022a9a59cdf96e9145524","schema_version":"1.0","event_id":"sha256:5a8427b30c5349ae8831ebd85594ee1111095d8a586022a9a59cdf96e9145524"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2012:LL7AWQAIGIZ5VPOO2I2NVD5TUV","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The infrared colors of the Sun","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.CO","astro-ph.EP"],"primary_cat":"astro-ph.SR","authors_text":"I. Ramirez, J. Melendez, L. Casagrande, M. Asplund","submitted_at":"2012-09-27T05:29:56Z","abstract_excerpt":"Solar infrared colors provide powerful constraints on the stellar effective temperature scale, but to this purpose they must be measured with both accuracy and precision. We achieve this requirement by using line-depth ratios to derive in a model independent way the infrared colors of the Sun, and use the latter to test the zero-point of the Casagrande et al. (2010) effective temperature scale, confirming its accuracy. Solar colors in the widely used 2MASS -J H K- and WISE -W1 W2 W3 W4- systems are provided. A cross check of the effective temperatures derived implementing 2MASS or WISE magnitu"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1209.6127","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":""},"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":"2026-05-18T03:39:51Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"x6CI5AbzgDkpzH48z5kXOTkn1OI7MBYSq9bcKy6+77HjPfcD0oYdvF3bkE7bbGuF/K+7z9fAL5aoXBb7XJbYAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T17:18:50.321202Z"},"content_sha256":"df7ce65e2c1aa85d2b17a0d5121d1144573eaa01089a74dc6464d203c8fbc4a7","schema_version":"1.0","event_id":"sha256:df7ce65e2c1aa85d2b17a0d5121d1144573eaa01089a74dc6464d203c8fbc4a7"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/LL7AWQAIGIZ5VPOO2I2NVD5TUV/bundle.json","state_url":"https://pith.science/pith/LL7AWQAIGIZ5VPOO2I2NVD5TUV/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/LL7AWQAIGIZ5VPOO2I2NVD5TUV/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":"2026-05-25T17:18:50Z","links":{"resolver":"https://pith.science/pith/LL7AWQAIGIZ5VPOO2I2NVD5TUV","bundle":"https://pith.science/pith/LL7AWQAIGIZ5VPOO2I2NVD5TUV/bundle.json","state":"https://pith.science/pith/LL7AWQAIGIZ5VPOO2I2NVD5TUV/state.json","well_known_bundle":"https://pith.science/.well-known/pith/LL7AWQAIGIZ5VPOO2I2NVD5TUV/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:LL7AWQAIGIZ5VPOO2I2NVD5TUV","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":"eb83951d19434ab82ed4e0e4a355524aa926fd9ce9b30768ee66935dcff678e9","cross_cats_sorted":["astro-ph.CO","astro-ph.EP"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2012-09-27T05:29:56Z","title_canon_sha256":"0b7fe8d173b2f83ed53d55415ad56c292d3a42d984bfb91e80fd5e11084ca49a"},"schema_version":"1.0","source":{"id":"1209.6127","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1209.6127","created_at":"2026-05-18T03:39:51Z"},{"alias_kind":"arxiv_version","alias_value":"1209.6127v2","created_at":"2026-05-18T03:39:51Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1209.6127","created_at":"2026-05-18T03:39:51Z"},{"alias_kind":"pith_short_12","alias_value":"LL7AWQAIGIZ5","created_at":"2026-05-18T12:27:14Z"},{"alias_kind":"pith_short_16","alias_value":"LL7AWQAIGIZ5VPOO","created_at":"2026-05-18T12:27:14Z"},{"alias_kind":"pith_short_8","alias_value":"LL7AWQAI","created_at":"2026-05-18T12:27:14Z"}],"graph_snapshots":[{"event_id":"sha256:df7ce65e2c1aa85d2b17a0d5121d1144573eaa01089a74dc6464d203c8fbc4a7","target":"graph","created_at":"2026-05-18T03:39:51Z","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":"Solar infrared colors provide powerful constraints on the stellar effective temperature scale, but to this purpose they must be measured with both accuracy and precision. We achieve this requirement by using line-depth ratios to derive in a model independent way the infrared colors of the Sun, and use the latter to test the zero-point of the Casagrande et al. (2010) effective temperature scale, confirming its accuracy. Solar colors in the widely used 2MASS -J H K- and WISE -W1 W2 W3 W4- systems are provided. A cross check of the effective temperatures derived implementing 2MASS or WISE magnitu","authors_text":"I. Ramirez, J. Melendez, L. Casagrande, M. Asplund","cross_cats":["astro-ph.CO","astro-ph.EP"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2012-09-27T05:29:56Z","title":"The infrared colors of the Sun"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1209.6127","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":"sha256:5a8427b30c5349ae8831ebd85594ee1111095d8a586022a9a59cdf96e9145524","target":"record","created_at":"2026-05-18T03:39:51Z","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":"eb83951d19434ab82ed4e0e4a355524aa926fd9ce9b30768ee66935dcff678e9","cross_cats_sorted":["astro-ph.CO","astro-ph.EP"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2012-09-27T05:29:56Z","title_canon_sha256":"0b7fe8d173b2f83ed53d55415ad56c292d3a42d984bfb91e80fd5e11084ca49a"},"schema_version":"1.0","source":{"id":"1209.6127","kind":"arxiv","version":2}},"canonical_sha256":"5afe0b40083233dabdced234da8fb3a542da842003d9c54ef7349bc5e5340fdc","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"5afe0b40083233dabdced234da8fb3a542da842003d9c54ef7349bc5e5340fdc","first_computed_at":"2026-05-18T03:39:51.589483Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:39:51.589483Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"QBXn4EsznhY/IHnnps0Wd3q45p1P70q6gZP26k/zEymDoZOjyJz9vqo7PRWM+vGpTzziKHTVLnToZEkZvkWpAQ==","signature_status":"signed_v1","signed_at":"2026-05-18T03:39:51.590477Z","signed_message":"canonical_sha256_bytes"},"source_id":"1209.6127","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:5a8427b30c5349ae8831ebd85594ee1111095d8a586022a9a59cdf96e9145524","sha256:df7ce65e2c1aa85d2b17a0d5121d1144573eaa01089a74dc6464d203c8fbc4a7"],"state_sha256":"14a37240d175e3e15dab7cfdbbd97d4b8e88656b84846327bc1fadd70edc0b7b"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"e82KX0dKPjmvM9T4W8UXvIpTrN9vd4JE9rqu62s+0tQlEwEKbktBZZVdH1byDKQ0WoT6WQywTeJM6tPBAK+SDQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-25T17:18:50.324892Z","bundle_sha256":"de430c5cd7c7350c750cfb307752db47f59fc63a5e18f9a533fb4f545638d103"}}