{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2019:EHZDCQTQYI34G6SB7WWCH7JF4I","short_pith_number":"pith:EHZDCQTQ","canonical_record":{"source":{"id":"1907.05263","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/publicdomain/zero/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2019-07-11T14:46:50Z","cross_cats_sorted":[],"title_canon_sha256":"31e6c490cc9d1bf31cfb7001066b8c14c0e8bac3a117f4fd33fcac6b9c443122","abstract_canon_sha256":"6340a877b0119cd1bdf348fd38c350372235b04cda8d7b8cc71b81e99967bdbb"},"schema_version":"1.0"},"canonical_sha256":"21f2314270c237c37a41fdac23fd25e2301380f194477d4ed7c2ea055ee287bc","source":{"kind":"arxiv","id":"1907.05263","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1907.05263","created_at":"2026-05-17T23:40:50Z"},{"alias_kind":"arxiv_version","alias_value":"1907.05263v1","created_at":"2026-05-17T23:40:50Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1907.05263","created_at":"2026-05-17T23:40:50Z"},{"alias_kind":"pith_short_12","alias_value":"EHZDCQTQYI34","created_at":"2026-05-18T12:33:15Z"},{"alias_kind":"pith_short_16","alias_value":"EHZDCQTQYI34G6SB","created_at":"2026-05-18T12:33:15Z"},{"alias_kind":"pith_short_8","alias_value":"EHZDCQTQ","created_at":"2026-05-18T12:33:15Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2019:EHZDCQTQYI34G6SB7WWCH7JF4I","target":"record","payload":{"canonical_record":{"source":{"id":"1907.05263","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/publicdomain/zero/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2019-07-11T14:46:50Z","cross_cats_sorted":[],"title_canon_sha256":"31e6c490cc9d1bf31cfb7001066b8c14c0e8bac3a117f4fd33fcac6b9c443122","abstract_canon_sha256":"6340a877b0119cd1bdf348fd38c350372235b04cda8d7b8cc71b81e99967bdbb"},"schema_version":"1.0"},"canonical_sha256":"21f2314270c237c37a41fdac23fd25e2301380f194477d4ed7c2ea055ee287bc","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:40:50.990839Z","signature_b64":"BSPXGIntEMjwT8IAJOLm8OVWGRCIYyUmhXDHUwixZHnhQ3FMXouea+ntI98BdrVtqAQTalMe//N6yKvoyFbeDg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"21f2314270c237c37a41fdac23fd25e2301380f194477d4ed7c2ea055ee287bc","last_reissued_at":"2026-05-17T23:40:50.990148Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:40:50.990148Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1907.05263","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":"2026-05-17T23:40:50Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"SlHCHwLTfJvRFbYgz/fOJuSsn1Lx7IALVUj26rhfBZP6IN5cjEBTlbF5hkDlTW4wrtphHMC94Qq80yys963MCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T12:43:27.933768Z"},"content_sha256":"37bdfc940f6a6d7ea44b754bf7ee497713f3e8339c86a5dd534f621c8110b69f","schema_version":"1.0","event_id":"sha256:37bdfc940f6a6d7ea44b754bf7ee497713f3e8339c86a5dd534f621c8110b69f"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2019:EHZDCQTQYI34G6SB7WWCH7JF4I","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Commensal, Multi-user Observations with an Ethernet-based Jansky Very Large Array","license":"http://creativecommons.org/publicdomain/zero/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.IM","authors_text":"Andrew Siemion, Bill Diamond, Casey Law, Dave DeBoer, Geoff Bower, Jack Hickish, Jason Manley, Joseph Lazio, Paul Demorest, Sarah Burke-Spolaor, Scott Ransom, Steve Croft, Tony Beasley, Vishal Gajjar, Zsolt Paragi","submitted_at":"2019-07-11T14:46:50Z","abstract_excerpt":"Over the last decade, the continuing decline in the cost of digital computing technology has brought about a dramatic transformation in how digital instrumentation for radio astronomy is developed and operated. In most cases, it is now possible to interface consumer computing hardware, e.g. inexpensive graphics processing units and storage devices, directly to the raw data streams produced by radio telescopes. Such systems bring with them myriad benefits: straightforward upgrade paths, cost savings through leveraging an economy of scale, and a lowered barrier to entry for scientists and engine"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1907.05263","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":"2026-05-17T23:40:50Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"YAKaBikRVGutg/hvKgmcL5ENyFQ335Wsxyf9lwnHHuSBnLcfhmTssZTS4mLTkglLUi9g+F9TlxOFVWo4wuX0BQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T12:43:27.934126Z"},"content_sha256":"c500ce5e7c5f4678ac083407bc49b2e58ff578832d0cec88b317050947eb5704","schema_version":"1.0","event_id":"sha256:c500ce5e7c5f4678ac083407bc49b2e58ff578832d0cec88b317050947eb5704"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/EHZDCQTQYI34G6SB7WWCH7JF4I/bundle.json","state_url":"https://pith.science/pith/EHZDCQTQYI34G6SB7WWCH7JF4I/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/EHZDCQTQYI34G6SB7WWCH7JF4I/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":"2026-05-27T12:43:27Z","links":{"resolver":"https://pith.science/pith/EHZDCQTQYI34G6SB7WWCH7JF4I","bundle":"https://pith.science/pith/EHZDCQTQYI34G6SB7WWCH7JF4I/bundle.json","state":"https://pith.science/pith/EHZDCQTQYI34G6SB7WWCH7JF4I/state.json","well_known_bundle":"https://pith.science/.well-known/pith/EHZDCQTQYI34G6SB7WWCH7JF4I/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:EHZDCQTQYI34G6SB7WWCH7JF4I","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":"6340a877b0119cd1bdf348fd38c350372235b04cda8d7b8cc71b81e99967bdbb","cross_cats_sorted":[],"license":"http://creativecommons.org/publicdomain/zero/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2019-07-11T14:46:50Z","title_canon_sha256":"31e6c490cc9d1bf31cfb7001066b8c14c0e8bac3a117f4fd33fcac6b9c443122"},"schema_version":"1.0","source":{"id":"1907.05263","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1907.05263","created_at":"2026-05-17T23:40:50Z"},{"alias_kind":"arxiv_version","alias_value":"1907.05263v1","created_at":"2026-05-17T23:40:50Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1907.05263","created_at":"2026-05-17T23:40:50Z"},{"alias_kind":"pith_short_12","alias_value":"EHZDCQTQYI34","created_at":"2026-05-18T12:33:15Z"},{"alias_kind":"pith_short_16","alias_value":"EHZDCQTQYI34G6SB","created_at":"2026-05-18T12:33:15Z"},{"alias_kind":"pith_short_8","alias_value":"EHZDCQTQ","created_at":"2026-05-18T12:33:15Z"}],"graph_snapshots":[{"event_id":"sha256:c500ce5e7c5f4678ac083407bc49b2e58ff578832d0cec88b317050947eb5704","target":"graph","created_at":"2026-05-17T23:40:50Z","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":"Over the last decade, the continuing decline in the cost of digital computing technology has brought about a dramatic transformation in how digital instrumentation for radio astronomy is developed and operated. In most cases, it is now possible to interface consumer computing hardware, e.g. inexpensive graphics processing units and storage devices, directly to the raw data streams produced by radio telescopes. Such systems bring with them myriad benefits: straightforward upgrade paths, cost savings through leveraging an economy of scale, and a lowered barrier to entry for scientists and engine","authors_text":"Andrew Siemion, Bill Diamond, Casey Law, Dave DeBoer, Geoff Bower, Jack Hickish, Jason Manley, Joseph Lazio, Paul Demorest, Sarah Burke-Spolaor, Scott Ransom, Steve Croft, Tony Beasley, Vishal Gajjar, Zsolt Paragi","cross_cats":[],"headline":"","license":"http://creativecommons.org/publicdomain/zero/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2019-07-11T14:46:50Z","title":"Commensal, Multi-user Observations with an Ethernet-based Jansky Very Large Array"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1907.05263","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":"sha256:37bdfc940f6a6d7ea44b754bf7ee497713f3e8339c86a5dd534f621c8110b69f","target":"record","created_at":"2026-05-17T23:40:50Z","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":"6340a877b0119cd1bdf348fd38c350372235b04cda8d7b8cc71b81e99967bdbb","cross_cats_sorted":[],"license":"http://creativecommons.org/publicdomain/zero/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2019-07-11T14:46:50Z","title_canon_sha256":"31e6c490cc9d1bf31cfb7001066b8c14c0e8bac3a117f4fd33fcac6b9c443122"},"schema_version":"1.0","source":{"id":"1907.05263","kind":"arxiv","version":1}},"canonical_sha256":"21f2314270c237c37a41fdac23fd25e2301380f194477d4ed7c2ea055ee287bc","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"21f2314270c237c37a41fdac23fd25e2301380f194477d4ed7c2ea055ee287bc","first_computed_at":"2026-05-17T23:40:50.990148Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:40:50.990148Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"BSPXGIntEMjwT8IAJOLm8OVWGRCIYyUmhXDHUwixZHnhQ3FMXouea+ntI98BdrVtqAQTalMe//N6yKvoyFbeDg==","signature_status":"signed_v1","signed_at":"2026-05-17T23:40:50.990839Z","signed_message":"canonical_sha256_bytes"},"source_id":"1907.05263","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:37bdfc940f6a6d7ea44b754bf7ee497713f3e8339c86a5dd534f621c8110b69f","sha256:c500ce5e7c5f4678ac083407bc49b2e58ff578832d0cec88b317050947eb5704"],"state_sha256":"6a05b59571af5b2ba3c255b3d18219f9301c2083a99ed9063e9f28bfd5ce0a6f"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"KsLay/5TgokZmmvo7WOEoNjZqwKBBefCfeHqO2IkhIuGcEKiDMrXV9staysIZgaCSBF/kAq78Jujcj7zAQ+YCA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-27T12:43:27.938069Z","bundle_sha256":"9c8b55ea2dde2ebc2763f84dd1898474cdbc62696b349c3f317f086cc095806e"}}