{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2011:VCN2W5UDESQQIAPJ7AIFUDJDCC","short_pith_number":"pith:VCN2W5UD","canonical_record":{"source":{"id":"1111.1834","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2011-11-08T09:21:46Z","cross_cats_sorted":["astro-ph.SR"],"title_canon_sha256":"e3e4e2b72474248032f488c9dd57ad85e2e81f6f4fa5e7917f1a6f425e1998ad","abstract_canon_sha256":"024fd050be7d2a2f9f325a2ca27f8c48b9c7e9796160741487d8acf1a01f2236"},"schema_version":"1.0"},"canonical_sha256":"a89bab768324a10401e9f8105a0d2310b97f90b162584a79040a1179ae16f2ae","source":{"kind":"arxiv","id":"1111.1834","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1111.1834","created_at":"2026-05-18T04:09:24Z"},{"alias_kind":"arxiv_version","alias_value":"1111.1834v1","created_at":"2026-05-18T04:09:24Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1111.1834","created_at":"2026-05-18T04:09:24Z"},{"alias_kind":"pith_short_12","alias_value":"VCN2W5UDESQQ","created_at":"2026-05-18T12:26:42Z"},{"alias_kind":"pith_short_16","alias_value":"VCN2W5UDESQQIAPJ","created_at":"2026-05-18T12:26:42Z"},{"alias_kind":"pith_short_8","alias_value":"VCN2W5UD","created_at":"2026-05-18T12:26:42Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2011:VCN2W5UDESQQIAPJ7AIFUDJDCC","target":"record","payload":{"canonical_record":{"source":{"id":"1111.1834","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2011-11-08T09:21:46Z","cross_cats_sorted":["astro-ph.SR"],"title_canon_sha256":"e3e4e2b72474248032f488c9dd57ad85e2e81f6f4fa5e7917f1a6f425e1998ad","abstract_canon_sha256":"024fd050be7d2a2f9f325a2ca27f8c48b9c7e9796160741487d8acf1a01f2236"},"schema_version":"1.0"},"canonical_sha256":"a89bab768324a10401e9f8105a0d2310b97f90b162584a79040a1179ae16f2ae","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T04:09:24.631269Z","signature_b64":"xZxqgPRIJ1i//w/Uf0OtdYfGVJ2CsA1VG6cpYPU33ICgI0gCySLGWB8YL0qfF5aP+19TO+zBxD8icFS0equEDw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"a89bab768324a10401e9f8105a0d2310b97f90b162584a79040a1179ae16f2ae","last_reissued_at":"2026-05-18T04:09:24.630621Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T04:09:24.630621Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1111.1834","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":"2026-05-18T04:09:24Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"EZuBxb+F6lN4HJiYX4mgtQj2/roXSivehWdHvKVnJ5W71YeHIRzvXhGDzC2CwJbEzeQBE5BGJEZ9Azl0kgu1DA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-02T06:45:55.279050Z"},"content_sha256":"5c4ac24b77b6d4bc8fcbefbb574e9cd8752126d5f739cd4e44d7c4e0a166dce6","schema_version":"1.0","event_id":"sha256:5c4ac24b77b6d4bc8fcbefbb574e9cd8752126d5f739cd4e44d7c4e0a166dce6"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2011:VCN2W5UDESQQIAPJ7AIFUDJDCC","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The SONG project and the prototype node at Tenerife","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.SR"],"primary_cat":"astro-ph.IM","authors_text":"A. N. Soerensen, E. Weiss, F. Grundahl, H. Kjeldsen, J. Christensen-Dalsgaard, J. Skottfelt, K. Harpsoee, K. Uytterhoeven, M. Fredslund Andersen, P. K. Rasmussen, P. L. Palle, S. Frandsen, U. G. Joergensen","submitted_at":"2011-11-08T09:21:46Z","abstract_excerpt":"SONG (Stellar Observations Network Group) is a global network of 1-m class robotic telescopes that is under development. The SONG prototype will shortly be operational at Observatorio del Teide, Tenerife, and first light is expected by December 2011. The main scientific goals of the SONG project are asteroseismology of bright stars and follow-up and characterization of exo-planets by means of precise measurements of stellar surface motions and brightness variations. We present the Tenerife SONG node and its instruments."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1111.1834","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":"2026-05-18T04:09:24Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"/zZvPrtsWrR0fs1IAzGm8DrFwuHlDfMzjnpXqLIpdeM4v6VfXv00aDUhNFhDKv9MrJWXpcAu6SNvRgSDG65WDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-02T06:45:55.279389Z"},"content_sha256":"26e779edc7251612a9a34a51dff032e88a07443770e91e616aa15f874290b376","schema_version":"1.0","event_id":"sha256:26e779edc7251612a9a34a51dff032e88a07443770e91e616aa15f874290b376"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/VCN2W5UDESQQIAPJ7AIFUDJDCC/bundle.json","state_url":"https://pith.science/pith/VCN2W5UDESQQIAPJ7AIFUDJDCC/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/VCN2W5UDESQQIAPJ7AIFUDJDCC/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":"2026-06-02T06:45:55Z","links":{"resolver":"https://pith.science/pith/VCN2W5UDESQQIAPJ7AIFUDJDCC","bundle":"https://pith.science/pith/VCN2W5UDESQQIAPJ7AIFUDJDCC/bundle.json","state":"https://pith.science/pith/VCN2W5UDESQQIAPJ7AIFUDJDCC/state.json","well_known_bundle":"https://pith.science/.well-known/pith/VCN2W5UDESQQIAPJ7AIFUDJDCC/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2011:VCN2W5UDESQQIAPJ7AIFUDJDCC","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":"024fd050be7d2a2f9f325a2ca27f8c48b9c7e9796160741487d8acf1a01f2236","cross_cats_sorted":["astro-ph.SR"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2011-11-08T09:21:46Z","title_canon_sha256":"e3e4e2b72474248032f488c9dd57ad85e2e81f6f4fa5e7917f1a6f425e1998ad"},"schema_version":"1.0","source":{"id":"1111.1834","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1111.1834","created_at":"2026-05-18T04:09:24Z"},{"alias_kind":"arxiv_version","alias_value":"1111.1834v1","created_at":"2026-05-18T04:09:24Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1111.1834","created_at":"2026-05-18T04:09:24Z"},{"alias_kind":"pith_short_12","alias_value":"VCN2W5UDESQQ","created_at":"2026-05-18T12:26:42Z"},{"alias_kind":"pith_short_16","alias_value":"VCN2W5UDESQQIAPJ","created_at":"2026-05-18T12:26:42Z"},{"alias_kind":"pith_short_8","alias_value":"VCN2W5UD","created_at":"2026-05-18T12:26:42Z"}],"graph_snapshots":[{"event_id":"sha256:26e779edc7251612a9a34a51dff032e88a07443770e91e616aa15f874290b376","target":"graph","created_at":"2026-05-18T04:09:24Z","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":"SONG (Stellar Observations Network Group) is a global network of 1-m class robotic telescopes that is under development. The SONG prototype will shortly be operational at Observatorio del Teide, Tenerife, and first light is expected by December 2011. The main scientific goals of the SONG project are asteroseismology of bright stars and follow-up and characterization of exo-planets by means of precise measurements of stellar surface motions and brightness variations. We present the Tenerife SONG node and its instruments.","authors_text":"A. N. Soerensen, E. Weiss, F. Grundahl, H. Kjeldsen, J. Christensen-Dalsgaard, J. Skottfelt, K. Harpsoee, K. Uytterhoeven, M. Fredslund Andersen, P. K. Rasmussen, P. L. Palle, S. Frandsen, U. G. Joergensen","cross_cats":["astro-ph.SR"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2011-11-08T09:21:46Z","title":"The SONG project and the prototype node at Tenerife"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1111.1834","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":"sha256:5c4ac24b77b6d4bc8fcbefbb574e9cd8752126d5f739cd4e44d7c4e0a166dce6","target":"record","created_at":"2026-05-18T04:09:24Z","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":"024fd050be7d2a2f9f325a2ca27f8c48b9c7e9796160741487d8acf1a01f2236","cross_cats_sorted":["astro-ph.SR"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2011-11-08T09:21:46Z","title_canon_sha256":"e3e4e2b72474248032f488c9dd57ad85e2e81f6f4fa5e7917f1a6f425e1998ad"},"schema_version":"1.0","source":{"id":"1111.1834","kind":"arxiv","version":1}},"canonical_sha256":"a89bab768324a10401e9f8105a0d2310b97f90b162584a79040a1179ae16f2ae","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"a89bab768324a10401e9f8105a0d2310b97f90b162584a79040a1179ae16f2ae","first_computed_at":"2026-05-18T04:09:24.630621Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T04:09:24.630621Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"xZxqgPRIJ1i//w/Uf0OtdYfGVJ2CsA1VG6cpYPU33ICgI0gCySLGWB8YL0qfF5aP+19TO+zBxD8icFS0equEDw==","signature_status":"signed_v1","signed_at":"2026-05-18T04:09:24.631269Z","signed_message":"canonical_sha256_bytes"},"source_id":"1111.1834","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:5c4ac24b77b6d4bc8fcbefbb574e9cd8752126d5f739cd4e44d7c4e0a166dce6","sha256:26e779edc7251612a9a34a51dff032e88a07443770e91e616aa15f874290b376"],"state_sha256":"988fcc72ea3d2a03aa1eb5506aed578ab0c463a050d27d77f016b034dd30e06c"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"67FvcEESZaGj3T4hsbIl0kmN8U7re+F+hZmTphMDAGN6WJ/MtMyFK6kuEodUylNPolDoNXa1h4KamgE5S/9dBQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-02T06:45:55.281161Z","bundle_sha256":"ec4eef160a4451314b89be682d35478bce2ee3c87cc5ecb9834f67a70519e971"}}