{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2003:N3YMDEXZ5LVFNA6BS6GZ2WUL6V","short_pith_number":"pith:N3YMDEXZ","canonical_record":{"source":{"id":"physics/0307006","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"physics.ins-det","submitted_at":"2003-07-01T15:45:44Z","cross_cats_sorted":[],"title_canon_sha256":"6307263cf463b72eb181ff92c44bd4fb4a511c5b1f49e9c542386a0ff2e97c2a","abstract_canon_sha256":"af9bafb1d4f1541649611f473cbca2cf3ef3a0172aa0f2e420238ede2df3a0b4"},"schema_version":"1.0"},"canonical_sha256":"6ef0c192f9eaea5683c1978d9d5a8bf552be6d795d379283ba531197639e9963","source":{"kind":"arxiv","id":"physics/0307006","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"physics/0307006","created_at":"2026-05-18T04:17:25Z"},{"alias_kind":"arxiv_version","alias_value":"physics/0307006v1","created_at":"2026-05-18T04:17:25Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.physics/0307006","created_at":"2026-05-18T04:17:25Z"},{"alias_kind":"pith_short_12","alias_value":"N3YMDEXZ5LVF","created_at":"2026-05-18T12:25:52Z"},{"alias_kind":"pith_short_16","alias_value":"N3YMDEXZ5LVFNA6B","created_at":"2026-05-18T12:25:52Z"},{"alias_kind":"pith_short_8","alias_value":"N3YMDEXZ","created_at":"2026-05-18T12:25:52Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2003:N3YMDEXZ5LVFNA6BS6GZ2WUL6V","target":"record","payload":{"canonical_record":{"source":{"id":"physics/0307006","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"physics.ins-det","submitted_at":"2003-07-01T15:45:44Z","cross_cats_sorted":[],"title_canon_sha256":"6307263cf463b72eb181ff92c44bd4fb4a511c5b1f49e9c542386a0ff2e97c2a","abstract_canon_sha256":"af9bafb1d4f1541649611f473cbca2cf3ef3a0172aa0f2e420238ede2df3a0b4"},"schema_version":"1.0"},"canonical_sha256":"6ef0c192f9eaea5683c1978d9d5a8bf552be6d795d379283ba531197639e9963","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T04:17:25.970387Z","signature_b64":"QPraKlWsVgLJM30tx04vmjU+moWXZ3NoS9Mz6BPuRWX6Ot5P4EFikKIM7NED6MZYI0WeUc8pfVnjjbOQEB/ECQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"6ef0c192f9eaea5683c1978d9d5a8bf552be6d795d379283ba531197639e9963","last_reissued_at":"2026-05-18T04:17:25.969668Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T04:17:25.969668Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"physics/0307006","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":"2026-05-18T04:17:25Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"76B71fVC/gd/z090AqGP+jv9m/RRB+iXjzmi4f29rXDmBPTz/W7HO62i71Nsz1xpuZhRC/QEdPYTjORbcFAFCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-25T14:23:45.848998Z"},"content_sha256":"4768f29340a3132621707c3641dce3efc9e84c221c4c253b395d851ffd782715","schema_version":"1.0","event_id":"sha256:4768f29340a3132621707c3641dce3efc9e84c221c4c253b395d851ffd782715"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2003:N3YMDEXZ5LVFNA6BS6GZ2WUL6V","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The Architecture of the ZEUS Micro Vertex Detector DAQ and Second Level Global Track Trigger","license":"","headline":"","cross_cats":[],"primary_cat":"physics.ins-det","authors_text":"Alessandro Polini","submitted_at":"2003-07-01T15:45:44Z","abstract_excerpt":"The architecture of the ZEUS Micro Vertex Detector data acquisition system and the implementation of its second level trigger, the ZEUS Global Track Trigger are described. Data from the vertex detectors HELIX read-out chips, corresponding to 200k channels, are digitized by 3 crates of ADCs which perform noise and pedestal subtraction, and data suppression and compaction. PowerPC VME board computers push cluster data for second level trigger processing and strip data for event building via Fast and Gigabit Ethernet network connections. Additional tracking information from the central tracking c"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"physics/0307006","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":"2026-05-18T04:17:25Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"K3DSRQ0mbRFLPI+m4ADSXYP+cMdy6r/ST0OlbLonsN8oDC0xx2BxL4mH5eEe06AVEKcF30IwFaDAkVYs8tuuAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-25T14:23:45.849354Z"},"content_sha256":"552978974f5d8c0e90902f47773b24c0ac72f6eac343250e77c5ad1c3049635a","schema_version":"1.0","event_id":"sha256:552978974f5d8c0e90902f47773b24c0ac72f6eac343250e77c5ad1c3049635a"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/N3YMDEXZ5LVFNA6BS6GZ2WUL6V/bundle.json","state_url":"https://pith.science/pith/N3YMDEXZ5LVFNA6BS6GZ2WUL6V/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/N3YMDEXZ5LVFNA6BS6GZ2WUL6V/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":"2026-06-25T14:23:45Z","links":{"resolver":"https://pith.science/pith/N3YMDEXZ5LVFNA6BS6GZ2WUL6V","bundle":"https://pith.science/pith/N3YMDEXZ5LVFNA6BS6GZ2WUL6V/bundle.json","state":"https://pith.science/pith/N3YMDEXZ5LVFNA6BS6GZ2WUL6V/state.json","well_known_bundle":"https://pith.science/.well-known/pith/N3YMDEXZ5LVFNA6BS6GZ2WUL6V/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2003:N3YMDEXZ5LVFNA6BS6GZ2WUL6V","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":"af9bafb1d4f1541649611f473cbca2cf3ef3a0172aa0f2e420238ede2df3a0b4","cross_cats_sorted":[],"license":"","primary_cat":"physics.ins-det","submitted_at":"2003-07-01T15:45:44Z","title_canon_sha256":"6307263cf463b72eb181ff92c44bd4fb4a511c5b1f49e9c542386a0ff2e97c2a"},"schema_version":"1.0","source":{"id":"physics/0307006","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"physics/0307006","created_at":"2026-05-18T04:17:25Z"},{"alias_kind":"arxiv_version","alias_value":"physics/0307006v1","created_at":"2026-05-18T04:17:25Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.physics/0307006","created_at":"2026-05-18T04:17:25Z"},{"alias_kind":"pith_short_12","alias_value":"N3YMDEXZ5LVF","created_at":"2026-05-18T12:25:52Z"},{"alias_kind":"pith_short_16","alias_value":"N3YMDEXZ5LVFNA6B","created_at":"2026-05-18T12:25:52Z"},{"alias_kind":"pith_short_8","alias_value":"N3YMDEXZ","created_at":"2026-05-18T12:25:52Z"}],"graph_snapshots":[{"event_id":"sha256:552978974f5d8c0e90902f47773b24c0ac72f6eac343250e77c5ad1c3049635a","target":"graph","created_at":"2026-05-18T04:17:25Z","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":"The architecture of the ZEUS Micro Vertex Detector data acquisition system and the implementation of its second level trigger, the ZEUS Global Track Trigger are described. Data from the vertex detectors HELIX read-out chips, corresponding to 200k channels, are digitized by 3 crates of ADCs which perform noise and pedestal subtraction, and data suppression and compaction. PowerPC VME board computers push cluster data for second level trigger processing and strip data for event building via Fast and Gigabit Ethernet network connections. Additional tracking information from the central tracking c","authors_text":"Alessandro Polini","cross_cats":[],"headline":"","license":"","primary_cat":"physics.ins-det","submitted_at":"2003-07-01T15:45:44Z","title":"The Architecture of the ZEUS Micro Vertex Detector DAQ and Second Level Global Track Trigger"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"physics/0307006","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":"sha256:4768f29340a3132621707c3641dce3efc9e84c221c4c253b395d851ffd782715","target":"record","created_at":"2026-05-18T04:17:25Z","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":"af9bafb1d4f1541649611f473cbca2cf3ef3a0172aa0f2e420238ede2df3a0b4","cross_cats_sorted":[],"license":"","primary_cat":"physics.ins-det","submitted_at":"2003-07-01T15:45:44Z","title_canon_sha256":"6307263cf463b72eb181ff92c44bd4fb4a511c5b1f49e9c542386a0ff2e97c2a"},"schema_version":"1.0","source":{"id":"physics/0307006","kind":"arxiv","version":1}},"canonical_sha256":"6ef0c192f9eaea5683c1978d9d5a8bf552be6d795d379283ba531197639e9963","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"6ef0c192f9eaea5683c1978d9d5a8bf552be6d795d379283ba531197639e9963","first_computed_at":"2026-05-18T04:17:25.969668Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T04:17:25.969668Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"QPraKlWsVgLJM30tx04vmjU+moWXZ3NoS9Mz6BPuRWX6Ot5P4EFikKIM7NED6MZYI0WeUc8pfVnjjbOQEB/ECQ==","signature_status":"signed_v1","signed_at":"2026-05-18T04:17:25.970387Z","signed_message":"canonical_sha256_bytes"},"source_id":"physics/0307006","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:4768f29340a3132621707c3641dce3efc9e84c221c4c253b395d851ffd782715","sha256:552978974f5d8c0e90902f47773b24c0ac72f6eac343250e77c5ad1c3049635a"],"state_sha256":"0502f10cc1bb34a272e7adac95e8258b825b575c41a2d031cf1d100f03156d25"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"QmqSvo/hBB3H8VYwpxTBRP9fXRnQd/Ap71W7QZo7AOidI1NlOX52w+BnmN0HgzHN7K2A48RQIysGsKyg2ScGCQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-25T14:23:45.851488Z","bundle_sha256":"256458c158e5ef3df122670cb66191ae2119a460b0684dbefcf09cdd3f2512c4"}}