{"punk":421,"name":"CryptoPunk #421","url":"https://punkprice.com/punk/421","image":"https://punkprice.com/api/punk-image/421.svg","type":"Male","skin_tone":2,"attributes":["Front Beard","Wild Hair"],"attribute_count":2,"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":"2026-11-04","note":"Fitted on sales up to the end of 2026-11-04 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":"2026-11-05T00:20:43.410Z","fingerprint_sha256":"3481057d321702992d48e1d2137f91c25ef6c1076787f042b28adb0686e4e119"},"estimate":{"eth":33.3571,"usd":75842,"band_1sigma":{"low_eth":30.75,"high_eth":36.1851,"low_usd":69914,"high_usd":82271},"band_2sigma":{"low_eth":28.3468,"high_eth":39.253,"low_usd":64450,"high_usd":89247},"sigma_log":0.0814,"multiple_of_floor":1.0976,"n1_eth":32.3769,"confidence":"High","cell":"Male 2-3","floor_eth":30.39,"floor_as_of":"2026-11-05T23:04:35.000Z","basis":"hourly floor"},"daily":{"date":"2026-11-04","eth":32.918,"usd":74843,"band_1sigma":{"low_eth":30.3453,"high_eth":35.7088,"low_usd":68994,"high_usd":81189},"band_2sigma":{"low_eth":27.9737,"high_eth":38.7363,"low_usd":63602,"high_usd":88072},"sigma_log":0.0814,"multiple_of_floor":1.0976,"n1_eth":31.9507,"confidence":"High","cell":"Male 2-3","floor_eth":29.99,"fingerprint_sha256":"3481057d321702992d48e1d2137f91c25ef6c1076787f042b28adb0686e4e119"},"fresh_floor":{"source":"hourly","as_of":"2026-11-05T23:04:35.000Z","block":26351802,"eth":30.39,"punk":3425,"public_asks":1163,"age_minutes":44,"stale":false,"label":"as of 23:04 UTC, floor 30.39 ETH","stale_note":null},"floor":{"as_of_date":"2026-11-04","eth":29.99,"eth_usd":2273.6272778684292,"latest":{"date":"2026-11-05","eth":30.39},"current":{"source":"hourly","as_of":"2026-11-05T23:04:35.000Z","block":26351802,"eth":30.39,"punk":3425,"public_asks":1163,"age_minutes":44,"stale":false,"label":"as of 23:04 UTC, floor 30.39 ETH","stale_note":null},"type_floor":{"type":"Male","date":"2026-11-05","eth":30.39,"public_asks":744,"punk":3425}},"listing":null,"argument":{"cell":"Male 2-3","terms":[{"pct":4.7,"beta":0.0457,"term":"drift","label":"Male market level","sales_12m":null,"weighted_sales":null},{"pct":10,"beta":0.0957,"term":"tone2","label":"Skin tone 2 (vs 1)","sales_12m":null,"weighted_sales":89.3},{"pct":-3.5,"beta":-0.0359,"term":"count2","label":"2 attributes (vs 3)","sales_12m":null,"weighted_sales":102.4},{"pct":-7.3,"beta":-0.0757,"term":"attr:Front Beard","label":"Front Beard","sales_12m":38,"weighted_sales":11.3}],"backtest":{"cell":"Male 2-3","seen":{"n":1435,"cover1":0.708,"cover2":0.933,"bias_pct":-0.7,"within10":0.745,"within25":0.947,"MdALE_pct":5.7},"thin":false,"sigma":0.08,"selection":{"n":1945,"cover1":0.69,"cover2":0.939,"bias_pct":-1.3,"within10":0.719,"within25":0.96,"MdALE_pct":6.1}},"own_sales":[],"comparables":[{"eth":27.33,"date":"2026-01-21","punk":2503,"source":"native-buy","adjusted_eth":30.0891,"shared_attributes":2},{"eth":26.5,"date":"2026-01-21","punk":2503,"source":"native-buy","adjusted_eth":29.1753,"shared_attributes":2},{"eth":27.511,"date":"2026-01-20","punk":2503,"source":"native-buy","adjusted_eth":30.2884,"shared_attributes":2},{"eth":29.65,"date":"2025-12-26","punk":7790,"source":"native-buy","adjusted_eth":33.5675,"shared_attributes":2},{"eth":31,"date":"2025-12-01","punk":7790,"source":"native-buy","adjusted_eth":30.382,"shared_attributes":2},{"eth":27.62,"date":"2026-11-02","punk":3425,"source":"native-buy","adjusted_eth":27.2385,"shared_attributes":1},{"eth":60,"date":"2026-10-21","punk":5448,"source":"native-buy","adjusted_eth":57.544,"shared_attributes":1},{"eth":29.99,"date":"2026-10-16","punk":7608,"source":"native-buy","adjusted_eth":29.0129,"shared_attributes":1}],"premium_log":0.0298,"type_multiple":{"sales":778,"period":"12 months","multiple":1.0654,"median_multiple":1.0654},"no_clear_premium":[{"attribute":"Wild Hair","sales_12m":52}],"summary":["Estimate 33.4 ETH (beta), 1σ range 30.8 to 36.2 ETH, 2σ range 28.3 to 39.3 ETH, confidence High, as of 23:04 UTC, floor 30.39 ETH (fitted on sales up to the end of 2026-11-04).","Floor 30.4 ETH at 23:04 UTC; 30.0 ETH at the close of 2026-11-04.","Male punks sold at a median 1.07x the floor of the day before (778 sales, 12 months).","Terms with clear support: Male market level +5%, Skin tone 2 (vs 1) +10%, 2 attributes (vs 3) -4%, Front Beard -7%.","In the backtest, Male 2-3 sales landed within ±6.1% of the estimate half the time (2023-2024) and within ±5.7% 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/421","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"}}