{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2012:TKXKKDQT6NHPUUYCNI5TN7BEM3","short_pith_number":"pith:TKXKKDQT","canonical_record":{"source":{"id":"1210.0587","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2012-10-01T21:33:42Z","cross_cats_sorted":[],"title_canon_sha256":"87394875744a6ba4a10608e943836a2c9140836ddc5121b90bd688bcf39e9804","abstract_canon_sha256":"31fee7b4890b6384627c53e63e9edf2229eeef47ce74956aa234bfdb4820455b"},"schema_version":"1.0"},"canonical_sha256":"9aaea50e13f34efa53026a3b36fc2466fb46e20ee2633c48d691a06b7806119f","source":{"kind":"arxiv","id":"1210.0587","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1210.0587","created_at":"2026-05-18T01:54:11Z"},{"alias_kind":"arxiv_version","alias_value":"1210.0587v2","created_at":"2026-05-18T01:54:11Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1210.0587","created_at":"2026-05-18T01:54:11Z"},{"alias_kind":"pith_short_12","alias_value":"TKXKKDQT6NHP","created_at":"2026-05-18T12:27:23Z"},{"alias_kind":"pith_short_16","alias_value":"TKXKKDQT6NHPUUYC","created_at":"2026-05-18T12:27:23Z"},{"alias_kind":"pith_short_8","alias_value":"TKXKKDQT","created_at":"2026-05-18T12:27:23Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2012:TKXKKDQT6NHPUUYCNI5TN7BEM3","target":"record","payload":{"canonical_record":{"source":{"id":"1210.0587","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2012-10-01T21:33:42Z","cross_cats_sorted":[],"title_canon_sha256":"87394875744a6ba4a10608e943836a2c9140836ddc5121b90bd688bcf39e9804","abstract_canon_sha256":"31fee7b4890b6384627c53e63e9edf2229eeef47ce74956aa234bfdb4820455b"},"schema_version":"1.0"},"canonical_sha256":"9aaea50e13f34efa53026a3b36fc2466fb46e20ee2633c48d691a06b7806119f","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:54:11.737887Z","signature_b64":"jnOuLC4cI8Evu1mNwDSgWW5nza12Ffp7rNc2lwABeXPsdDFvRC8hhwuWBR2FvyMCbl8rZPPcl2nTTZcANkQ4Cg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"9aaea50e13f34efa53026a3b36fc2466fb46e20ee2633c48d691a06b7806119f","last_reissued_at":"2026-05-18T01:54:11.737243Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:54:11.737243Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1210.0587","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":"2026-05-18T01:54:11Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"DQdOgDUho/1y106/44WejMwAmHX/NQcb1a6pw1gn5USGzX0AyX87rYU5tvemh8JCOmLarf6P2Mhf5n0C7EXdCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-30T21:40:47.566099Z"},"content_sha256":"32b4de7540ae29e27c791a85f46cdf3dfaee020a0dd999fe05d69ca195a738dc","schema_version":"1.0","event_id":"sha256:32b4de7540ae29e27c791a85f46cdf3dfaee020a0dd999fe05d69ca195a738dc"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2012:TKXKKDQT6NHPUUYCNI5TN7BEM3","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The Absence of Cold Dust around Warm Debris Disk Star HD 15407A","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.EP","authors_text":"Daisuke Ishihara, Hideaki Fujiwara, Hirokazu Kataza, Hiroshi Murakami, Misato Fukagawa, Satoshi Takita, Takashi Onaka, Takuya Yamashita","submitted_at":"2012-10-01T21:33:42Z","abstract_excerpt":"We report Herschel and AKARI photometric observations at far-infrared (FIR) wavelengths of the debris disk around the F3V star HD 15407A, in which the presence of an extremely large amount of warm dust (~500-600 K) has been suggested by mid-infrared (MIR) photometry and spectroscopy. The observed flux densities of the debris disk at 60-160 micron are clearly above the photospheric level of the star, suggesting excess emission at FIR as well as at MIR wavelengths previously reported. The observed FIR excess emission is consistent with the continuum level extrapolated from the MIR excess, sugges"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1210.0587","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":"2026-05-18T01:54:11Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"gcx1RuHpEGdcx+WAz4kYKUPfnaBrokIifxyGsx12lrt1KpZB2dtp5IqWpj5csKT+FWiGNvvW6dToc6xkENf6CA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-30T21:40:47.566753Z"},"content_sha256":"08543184f656e8261334903381d45f8d6f0b54ae3f3589524e085c976bd5cb47","schema_version":"1.0","event_id":"sha256:08543184f656e8261334903381d45f8d6f0b54ae3f3589524e085c976bd5cb47"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/TKXKKDQT6NHPUUYCNI5TN7BEM3/bundle.json","state_url":"https://pith.science/pith/TKXKKDQT6NHPUUYCNI5TN7BEM3/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/TKXKKDQT6NHPUUYCNI5TN7BEM3/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":"2026-05-30T21:40:47Z","links":{"resolver":"https://pith.science/pith/TKXKKDQT6NHPUUYCNI5TN7BEM3","bundle":"https://pith.science/pith/TKXKKDQT6NHPUUYCNI5TN7BEM3/bundle.json","state":"https://pith.science/pith/TKXKKDQT6NHPUUYCNI5TN7BEM3/state.json","well_known_bundle":"https://pith.science/.well-known/pith/TKXKKDQT6NHPUUYCNI5TN7BEM3/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:TKXKKDQT6NHPUUYCNI5TN7BEM3","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":"31fee7b4890b6384627c53e63e9edf2229eeef47ce74956aa234bfdb4820455b","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2012-10-01T21:33:42Z","title_canon_sha256":"87394875744a6ba4a10608e943836a2c9140836ddc5121b90bd688bcf39e9804"},"schema_version":"1.0","source":{"id":"1210.0587","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1210.0587","created_at":"2026-05-18T01:54:11Z"},{"alias_kind":"arxiv_version","alias_value":"1210.0587v2","created_at":"2026-05-18T01:54:11Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1210.0587","created_at":"2026-05-18T01:54:11Z"},{"alias_kind":"pith_short_12","alias_value":"TKXKKDQT6NHP","created_at":"2026-05-18T12:27:23Z"},{"alias_kind":"pith_short_16","alias_value":"TKXKKDQT6NHPUUYC","created_at":"2026-05-18T12:27:23Z"},{"alias_kind":"pith_short_8","alias_value":"TKXKKDQT","created_at":"2026-05-18T12:27:23Z"}],"graph_snapshots":[{"event_id":"sha256:08543184f656e8261334903381d45f8d6f0b54ae3f3589524e085c976bd5cb47","target":"graph","created_at":"2026-05-18T01:54:11Z","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 report Herschel and AKARI photometric observations at far-infrared (FIR) wavelengths of the debris disk around the F3V star HD 15407A, in which the presence of an extremely large amount of warm dust (~500-600 K) has been suggested by mid-infrared (MIR) photometry and spectroscopy. The observed flux densities of the debris disk at 60-160 micron are clearly above the photospheric level of the star, suggesting excess emission at FIR as well as at MIR wavelengths previously reported. The observed FIR excess emission is consistent with the continuum level extrapolated from the MIR excess, sugges","authors_text":"Daisuke Ishihara, Hideaki Fujiwara, Hirokazu Kataza, Hiroshi Murakami, Misato Fukagawa, Satoshi Takita, Takashi Onaka, Takuya Yamashita","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2012-10-01T21:33:42Z","title":"The Absence of Cold Dust around Warm Debris Disk Star HD 15407A"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1210.0587","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":"sha256:32b4de7540ae29e27c791a85f46cdf3dfaee020a0dd999fe05d69ca195a738dc","target":"record","created_at":"2026-05-18T01:54:11Z","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":"31fee7b4890b6384627c53e63e9edf2229eeef47ce74956aa234bfdb4820455b","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2012-10-01T21:33:42Z","title_canon_sha256":"87394875744a6ba4a10608e943836a2c9140836ddc5121b90bd688bcf39e9804"},"schema_version":"1.0","source":{"id":"1210.0587","kind":"arxiv","version":2}},"canonical_sha256":"9aaea50e13f34efa53026a3b36fc2466fb46e20ee2633c48d691a06b7806119f","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"9aaea50e13f34efa53026a3b36fc2466fb46e20ee2633c48d691a06b7806119f","first_computed_at":"2026-05-18T01:54:11.737243Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:54:11.737243Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"jnOuLC4cI8Evu1mNwDSgWW5nza12Ffp7rNc2lwABeXPsdDFvRC8hhwuWBR2FvyMCbl8rZPPcl2nTTZcANkQ4Cg==","signature_status":"signed_v1","signed_at":"2026-05-18T01:54:11.737887Z","signed_message":"canonical_sha256_bytes"},"source_id":"1210.0587","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:32b4de7540ae29e27c791a85f46cdf3dfaee020a0dd999fe05d69ca195a738dc","sha256:08543184f656e8261334903381d45f8d6f0b54ae3f3589524e085c976bd5cb47"],"state_sha256":"0ca8c802dd4d92a12d64d28c944499701e5568e8f55abe24a9cbab2ae6e3ca5e"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"zJUpAwtxeIcJ25HpHwanjgFwaTfitN6l83nHPZdL1v3HQPohrzCkp0Me6QtxvlvMZzbtdif+iZxmxUzaqixODg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-30T21:40:47.569887Z","bundle_sha256":"d0041aaeb862f677c5f8665e8db3d2f1f3e4412aca19e20a69fe0a7b51309b76"}}