{"id":"z1-union-cost-ledger","title":"Z1 Union Campaign — Measured Cost Ledger (2026-07-24)","subtitle":"129 anchors in 61.0 wall-hours (mean 28.4 min/anchor), 244 vCPU-hours → $14.65 cloud-equivalent plus $0.60 local electricity, with per-path wall-hours.","category":"validation","tags":["z1","union-anchor","sparse-dft","economics","cost-ledger"],"source":"articles/docs/analysis/z1-union-cost-ledger.md","lang":"en","words":149,"readMinutes":1,"toc":[],"html":"<h1 id=\"z1-union-campaign-measured-cost-ledger-2026-07-24\">Z1 union campaign — measured cost ledger (2026-07-24)</h1><p>anchors: 129 | total wall: 61.0 h | mean anchor: 28.4 min</p>\n<p>vCPU-hours (4 threads): 244 | cloud-equivalent at &lt;!--MATH0--&gt;14.65\nlocal electricity (~65W @ &lt;!--MATH1--&gt;0.60</p>\n<p>per-path wall-hours:</p>\n<p>  path-0: 7 anchors, 3.64 h\n  path-1: 5 anchors, 1.04 h\n  path-3: 5 anchors, 5.11 h\n  path-4: 7 anchors, 0.59 h\n  path-5: 5 anchors, 5.61 h\n  path-6: 7 anchors, 3.98 h\n  path-7: 5 anchors, 0.37 h\n  path-9: 5 anchors, 2.96 h\n  path-11: 5 anchors, 0.81 h\n  path-12: 5 anchors, 0.68 h\n  path-13: 5 anchors, 0.71 h\n  path-14: 7 anchors, 3.95 h\n  path-15: 5 anchors, 1.45 h\n  path-16: 5 anchors, 0.44 h\n  path-17: 7 anchors, 6.45 h\n  path-19: 7 anchors, 4.04 h\n  path-21: 5 anchors, 2.60 h\n  path-22: 7 anchors, 2.55 h\n  path-24: 5 anchors, 2.93 h\n  path-25: 5 anchors, 2.83 h\n  path-26: 5 anchors, 2.62 h\n  path-27: 5 anchors, 2.27 h\n  path-29: 5 anchors, 3.41 h</p>\n"}