{"punk":4128,"name":"CryptoPunk #4128","url":"https://punkprice.com/punk/4128","image":"https://punkprice.com/api/punk-image/4128.svg","type":"Male","skin_tone":4,"attributes":["Frumpy Hair"],"attribute_count":1,"model":{"version":"est-v2-202610","beta":true,"label":"Valuation (beta), not a floor","spec_sha256":"1cf27321b403ea86f6972db116008f450d113e635f10c03d21207a83f7bfb63f","method":"https://punkprice.com/about#estimate","track_record":"https://punkprice.com/track-record","rule":"N1 (floor x type median multiple of the last 12 months) plus, for Female and Male punks, only the attribute, skin tone, attribute count and drift terms whose 95% interval excludes zero (per-type weighted ridge, Huber loss, half-life 90 days). Zombie, Ape, Alien: weighted median multiple of all their sales (half-life 2 years). Bands: floor x exp(log estimate +- k sigma), sigma = sqrt(s_cell^2 + (0.5 x premium)^2).","caveats":["Female estimates sit close to the floor: in the backtest the plain type multiple was the better median guess for Female punks.","Punks with 0 or 1 attributes, and Zombie, Ape and Alien punks, have few sales; their bands are wide and their confidence is Low.","Trained on native CryptoPunks marketplace sales only; wrapped-punk sales are not included yet."]},"as_of":{"date":"2026-11-05","note":"Fitted on sales up to the end of 2026-11-05 UTC. `estimate` is valued at the latest exact floor (`fresh_floor`, refreshed hourly); `daily` is valued at that day's closing floor and is the one the track record scores.","written_at":"2026-11-06T00:20:36.384Z","fingerprint_sha256":"28fb24ec0a4377e5ef5227eb5d7b42a3750c93b8b338f0430ec1b75165a89dc1"},"estimate":{"eth":43.2247,"usd":104737,"band_1sigma":{"low_eth":33.5292,"high_eth":55.7238,"low_usd":81244,"high_usd":135023},"band_2sigma":{"low_eth":26.0084,"high_eth":71.8374,"low_usd":63020,"high_usd":174068},"sigma_log":0.254,"multiple_of_floor":1.4223,"n1_eth":32.3864,"confidence":"Medium","cell":"Male 0-1","floor_eth":30.39,"floor_as_of":"2026-11-06T07:04:35.000Z","basis":"hourly floor"},"daily":{"date":"2026-11-05","eth":43.2247,"usd":104737,"band_1sigma":{"low_eth":33.5292,"high_eth":55.7238,"low_usd":81244,"high_usd":135023},"band_2sigma":{"low_eth":26.0084,"high_eth":71.8374,"low_usd":63020,"high_usd":174068},"sigma_log":0.254,"multiple_of_floor":1.4223,"n1_eth":32.3864,"confidence":"Medium","cell":"Male 0-1","floor_eth":30.39,"fingerprint_sha256":"28fb24ec0a4377e5ef5227eb5d7b42a3750c93b8b338f0430ec1b75165a89dc1"},"fresh_floor":{"source":"hourly","as_of":"2026-11-06T07:04:35.000Z","block":26354196,"eth":30.39,"punk":3425,"public_asks":1162,"age_minutes":42,"stale":false,"label":"as of 07:04 UTC, floor 30.39 ETH","stale_note":null},"floor":{"as_of_date":"2026-11-05","eth":30.39,"eth_usd":2423.081896592348,"latest":{"date":"2026-11-06","eth":30.39},"current":{"source":"hourly","as_of":"2026-11-06T07:04:35.000Z","block":26354196,"eth":30.39,"punk":3425,"public_asks":1162,"age_minutes":42,"stale":false,"label":"as of 07:04 UTC, floor 30.39 ETH","stale_note":null},"type_floor":{"type":"Male","date":"2026-11-06","eth":30.39,"public_asks":744,"punk":3425}},"listing":null,"argument":{"cell":"Male 0-1","terms":[{"pct":4.6,"beta":0.0454,"term":"drift","label":"Male market level","sales_12m":null,"weighted_sales":null},{"pct":19.8,"beta":0.1805,"term":"tone4","label":"Skin tone 4 (vs 1)","sales_12m":null,"weighted_sales":25.7},{"pct":14.9,"beta":0.1387,"term":"count1","label":"1 attribute (vs 3)","sales_12m":null,"weighted_sales":3.5},{"pct":-7.3,"beta":-0.076,"term":"attr:Frumpy Hair","label":"Frumpy Hair","sales_12m":59,"weighted_sales":19.8}],"backtest":{"cell":"Male 0-1","seen":{"n":16,"cover1":0.5,"cover2":0.625,"bias_pct":27.5,"within10":0.25,"within25":0.5,"MdALE_pct":27.5},"thin":true,"sigma":0.209,"selection":{"n":35,"cover1":0.714,"cover2":0.914,"bias_pct":6.6,"within10":0.571,"within25":0.714,"MdALE_pct":7.8}},"own_sales":[{"eth":0.5,"date":"2017-07-15","block":4024816,"source":"native-buy","excluded":null,"log_index":62,"adjusted_eth":41.0676}],"comparables":[{"eth":29,"date":"2026-10-20","punk":7711,"source":"native-bid","adjusted_eth":28.1839,"shared_attributes":1},{"eth":30.4,"date":"2026-10-15","punk":5098,"source":"native-buy","adjusted_eth":29.8114,"shared_attributes":1},{"eth":31.31,"date":"2026-10-08","punk":5098,"source":"native-buy","adjusted_eth":29.0538,"shared_attributes":1},{"eth":33.94,"date":"2026-10-05","punk":4341,"source":"native-buy","adjusted_eth":31.2746,"shared_attributes":1},{"eth":39.99,"date":"2026-09-29","punk":7559,"source":"native-buy","adjusted_eth":36.2883,"shared_attributes":1},{"eth":33,"date":"2026-09-28","punk":4341,"source":"native-buy","adjusted_eth":29.7853,"shared_attributes":1},{"eth":31.374,"date":"2026-09-25","punk":4341,"source":"native-buy","adjusted_eth":28.3009,"shared_attributes":1},{"eth":33.25,"date":"2026-09-22","punk":5098,"source":"native-buy","adjusted_eth":31.1584,"shared_attributes":1}],"premium_log":0.2887,"type_multiple":{"sales":772,"period":"12 months","multiple":1.0657,"median_multiple":1.0657},"no_clear_premium":[],"summary":["Estimate 43.2 ETH (beta), 1σ range 33.5 to 55.7 ETH, 2σ range 26.0 to 71.8 ETH, confidence Medium, as of 07:04 UTC, floor 30.39 ETH (fitted on sales up to the end of 2026-11-05).","Floor 30.4 ETH at 07:04 UTC; 30.4 ETH at the close of 2026-11-05.","Male punks sold at a median 1.07x the floor of the day before (772 sales, 12 months).","Terms with clear support: Male market level +5%, Skin tone 4 (vs 1) +20%, 1 attribute (vs 3) +15%, Frumpy Hair -7%.","In the backtest, Male 0-1 sales landed within ±7.8% of the estimate half the time (2023-2024) and within ±27.5% in 2025-2026 (months already seen in round 1)."]},"track_record":[],"cite_as":"PunkPrice (2026). CryptoPunks per-punk estimates (beta), model est-v2-202610, from CryptoPunks marketplace sales. https://punkprice.com/punk/4128","license":"CC BY 4.0","disclaimer":"Valuation (beta) from public marketplace sales: not an appraisal and not financial advice. It can be wrong, so read the range, not only the number.","links":{"listings":"https://punkprice.com/listings","backtest":"https://punkprice.com/api/estimate/backtest.json","track_record":"https://punkprice.com/api/estimate/track-record.json"}}