{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2014:7K4KA5VMC4OXPVPWK7EFQV6IFG","short_pith_number":"pith:7K4KA5VM","canonical_record":{"source":{"id":"1412.0843","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2014-12-02T10:28:05Z","cross_cats_sorted":[],"title_canon_sha256":"111b05e53c6cd8698d96f391e2dc2fb584e5b7044c2bcd258dadf4b061328838","abstract_canon_sha256":"31cc4b7e6e8f80b5a6b4435de131b0a855663336f842538bde8d31dd6de8968e"},"schema_version":"1.0"},"canonical_sha256":"fab8a076ac171d77d5f657c85857c829b22f83a3a39feedc829455ec1b953d74","source":{"kind":"arxiv","id":"1412.0843","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1412.0843","created_at":"2026-05-18T01:41:24Z"},{"alias_kind":"arxiv_version","alias_value":"1412.0843v1","created_at":"2026-05-18T01:41:24Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1412.0843","created_at":"2026-05-18T01:41:24Z"},{"alias_kind":"pith_short_12","alias_value":"7K4KA5VMC4OX","created_at":"2026-05-18T12:28:19Z"},{"alias_kind":"pith_short_16","alias_value":"7K4KA5VMC4OXPVPW","created_at":"2026-05-18T12:28:19Z"},{"alias_kind":"pith_short_8","alias_value":"7K4KA5VM","created_at":"2026-05-18T12:28:19Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2014:7K4KA5VMC4OXPVPWK7EFQV6IFG","target":"record","payload":{"canonical_record":{"source":{"id":"1412.0843","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2014-12-02T10:28:05Z","cross_cats_sorted":[],"title_canon_sha256":"111b05e53c6cd8698d96f391e2dc2fb584e5b7044c2bcd258dadf4b061328838","abstract_canon_sha256":"31cc4b7e6e8f80b5a6b4435de131b0a855663336f842538bde8d31dd6de8968e"},"schema_version":"1.0"},"canonical_sha256":"fab8a076ac171d77d5f657c85857c829b22f83a3a39feedc829455ec1b953d74","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:41:24.272522Z","signature_b64":"THEGNdwq+kEPRHbihrcBVkMWyclP8n2qmnJZcLmCs/7zdvoUn6vvdx8j820998+MO5rK43/OQDiZGw4XGG7BCQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"fab8a076ac171d77d5f657c85857c829b22f83a3a39feedc829455ec1b953d74","last_reissued_at":"2026-05-18T01:41:24.271776Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:41:24.271776Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1412.0843","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":"2026-05-18T01:41:24Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"BrKxUwhyLVKtUk8DajuCS2lOZv56bNpDV7aagCdE9vmBE9DKvIQUrBAZU1h7WgOC2kcL4ELcPdNKTQYd5iGnBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T12:01:30.675887Z"},"content_sha256":"15a23b227a0c08025005aa8671bda62573a5e027470297707eaeb2dfc67aa523","schema_version":"1.0","event_id":"sha256:15a23b227a0c08025005aa8671bda62573a5e027470297707eaeb2dfc67aa523"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2014:7K4KA5VMC4OXPVPWK7EFQV6IFG","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Project overview and update on WEAVE: the next generation wide-field spectroscopy facility for the William Herschel Telescope","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.IM","authors_text":"Andrea Baruffolo, Andrea Bianco, Andy Ridings, Antonella Vallenari, Attila Jasko, Carlos Allende Prieto, Carlos Martin, Chris Benn, Chris Mottram, Christina Zurita, David Terrett, Diego Cano, Dirk Lesman, Don Carlos Abrams, Eduardo Gonzales Solares, Emilie Lhome, Emilio Molinari, Frank Gribbin, Frederic Sayede, Gavin Dalton, Iain Steele, Ian Lewis, Ian Tosh, Isabelle Guinouard, J. Alfonso L. Aguerri, James Gilbert, Jan Kragt, Jim Lewis, Johannes Pragt, Jose Alonso, Jose Guerra, Jose Miguel Delgado, Jose Penate, Juerg Rey, Kevin Dee, Kevin Middleton, Kevin Rogers, Luis Fernando Rodriguez, Marcello Lodi, Marc Verheijen, Matthew Brock, Mike Irwin, Neil O Mahony, Neils Tromp, Nic Walton, Piercarlo Bonifacio, Ramon Navarro, Remko Stuik, Rik ter Horst, Scott Trager, Sergio Pico, Stuart Bates, Tibor Agocs","submitted_at":"2014-12-02T10:28:05Z","abstract_excerpt":"We present an overview of and status report on the WEAVE next-generation spectroscopy facility for the William Herschel Telescope (WHT). WEAVE principally targets optical ground-based follow up of upcoming ground-based (LOFAR) and space-based (Gaia) surveys. WEAVE is a multi-object and multi-IFU facility utilizing a new 2-degree prime focus field of view at the WHT, with a buffered pick-and-place positioner system hosting 1000 multi-object (MOS) fibres, 20 integral field units, or a single large IFU for each observation. The fibres are fed to a single spectrograph, with a pair of 8k(spectral) "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1412.0843","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":"2026-05-18T01:41:24Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"U1mME9n4JPqXWdgsBo5P1OWK2qTgt4+bw78d/vawVtXnW68USiv+WPvRuNc9Z3N7IVT/0v+cJU2gINW8VzsfCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T12:01:30.676292Z"},"content_sha256":"8573f026a34879f12fe7bac5fd24d1e7c029c34ea4d1ea360bfe0888e90d8cef","schema_version":"1.0","event_id":"sha256:8573f026a34879f12fe7bac5fd24d1e7c029c34ea4d1ea360bfe0888e90d8cef"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/7K4KA5VMC4OXPVPWK7EFQV6IFG/bundle.json","state_url":"https://pith.science/pith/7K4KA5VMC4OXPVPWK7EFQV6IFG/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/7K4KA5VMC4OXPVPWK7EFQV6IFG/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":"2026-05-26T12:01:30Z","links":{"resolver":"https://pith.science/pith/7K4KA5VMC4OXPVPWK7EFQV6IFG","bundle":"https://pith.science/pith/7K4KA5VMC4OXPVPWK7EFQV6IFG/bundle.json","state":"https://pith.science/pith/7K4KA5VMC4OXPVPWK7EFQV6IFG/state.json","well_known_bundle":"https://pith.science/.well-known/pith/7K4KA5VMC4OXPVPWK7EFQV6IFG/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2014:7K4KA5VMC4OXPVPWK7EFQV6IFG","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":"31cc4b7e6e8f80b5a6b4435de131b0a855663336f842538bde8d31dd6de8968e","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2014-12-02T10:28:05Z","title_canon_sha256":"111b05e53c6cd8698d96f391e2dc2fb584e5b7044c2bcd258dadf4b061328838"},"schema_version":"1.0","source":{"id":"1412.0843","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1412.0843","created_at":"2026-05-18T01:41:24Z"},{"alias_kind":"arxiv_version","alias_value":"1412.0843v1","created_at":"2026-05-18T01:41:24Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1412.0843","created_at":"2026-05-18T01:41:24Z"},{"alias_kind":"pith_short_12","alias_value":"7K4KA5VMC4OX","created_at":"2026-05-18T12:28:19Z"},{"alias_kind":"pith_short_16","alias_value":"7K4KA5VMC4OXPVPW","created_at":"2026-05-18T12:28:19Z"},{"alias_kind":"pith_short_8","alias_value":"7K4KA5VM","created_at":"2026-05-18T12:28:19Z"}],"graph_snapshots":[{"event_id":"sha256:8573f026a34879f12fe7bac5fd24d1e7c029c34ea4d1ea360bfe0888e90d8cef","target":"graph","created_at":"2026-05-18T01:41:24Z","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":"We present an overview of and status report on the WEAVE next-generation spectroscopy facility for the William Herschel Telescope (WHT). WEAVE principally targets optical ground-based follow up of upcoming ground-based (LOFAR) and space-based (Gaia) surveys. WEAVE is a multi-object and multi-IFU facility utilizing a new 2-degree prime focus field of view at the WHT, with a buffered pick-and-place positioner system hosting 1000 multi-object (MOS) fibres, 20 integral field units, or a single large IFU for each observation. The fibres are fed to a single spectrograph, with a pair of 8k(spectral) ","authors_text":"Andrea Baruffolo, Andrea Bianco, Andy Ridings, Antonella Vallenari, Attila Jasko, Carlos Allende Prieto, Carlos Martin, Chris Benn, Chris Mottram, Christina Zurita, David Terrett, Diego Cano, Dirk Lesman, Don Carlos Abrams, Eduardo Gonzales Solares, Emilie Lhome, Emilio Molinari, Frank Gribbin, Frederic Sayede, Gavin Dalton, Iain Steele, Ian Lewis, Ian Tosh, Isabelle Guinouard, J. Alfonso L. Aguerri, James Gilbert, Jan Kragt, Jim Lewis, Johannes Pragt, Jose Alonso, Jose Guerra, Jose Miguel Delgado, Jose Penate, Juerg Rey, Kevin Dee, Kevin Middleton, Kevin Rogers, Luis Fernando Rodriguez, Marcello Lodi, Marc Verheijen, Matthew Brock, Mike Irwin, Neil O Mahony, Neils Tromp, Nic Walton, Piercarlo Bonifacio, Ramon Navarro, Remko Stuik, Rik ter Horst, Scott Trager, Sergio Pico, Stuart Bates, Tibor Agocs","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2014-12-02T10:28:05Z","title":"Project overview and update on WEAVE: the next generation wide-field spectroscopy facility for the William Herschel Telescope"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1412.0843","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":"sha256:15a23b227a0c08025005aa8671bda62573a5e027470297707eaeb2dfc67aa523","target":"record","created_at":"2026-05-18T01:41:24Z","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":"31cc4b7e6e8f80b5a6b4435de131b0a855663336f842538bde8d31dd6de8968e","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2014-12-02T10:28:05Z","title_canon_sha256":"111b05e53c6cd8698d96f391e2dc2fb584e5b7044c2bcd258dadf4b061328838"},"schema_version":"1.0","source":{"id":"1412.0843","kind":"arxiv","version":1}},"canonical_sha256":"fab8a076ac171d77d5f657c85857c829b22f83a3a39feedc829455ec1b953d74","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"fab8a076ac171d77d5f657c85857c829b22f83a3a39feedc829455ec1b953d74","first_computed_at":"2026-05-18T01:41:24.271776Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:41:24.271776Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"THEGNdwq+kEPRHbihrcBVkMWyclP8n2qmnJZcLmCs/7zdvoUn6vvdx8j820998+MO5rK43/OQDiZGw4XGG7BCQ==","signature_status":"signed_v1","signed_at":"2026-05-18T01:41:24.272522Z","signed_message":"canonical_sha256_bytes"},"source_id":"1412.0843","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:15a23b227a0c08025005aa8671bda62573a5e027470297707eaeb2dfc67aa523","sha256:8573f026a34879f12fe7bac5fd24d1e7c029c34ea4d1ea360bfe0888e90d8cef"],"state_sha256":"2516691b5829053a68d2ca5cbad558f131777299125c2a67c5a817e4baa8d37b"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"/OERH8PQjWNk96KzsvjmoOSjz2dTkK3LnpLBGnVwrBk8okx7lgcF4uAIqtXHjCjD4/cq1Scn0aMh4+heQsp5Bg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-26T12:01:30.678614Z","bundle_sha256":"1975b5dd22ce019667f4af9b4cbcba4e4d3afc2728a193c4b259d7319361a7f3"}}