{"canonical_id_v02":"d2f9c735a496","canonical_url_id":"d2f9c735a496","identity":{"artist":"Kevin Eastman & Peter Laird","game":"mtg","grade":"raw","image_url":"https://cards.scryfall.io/normal/front/1/9/19545db3-8be5-41e5-8d13-dec4f96fe624.jpg?1783904177","locale":"en","name":"Undercity Sewers","number":"20","rarity":"mythic","series_slug":"teenage-mutant-ninja-turtles-source-material","set_name":"Teenage Mutant Ninja Turtles Source Material","set_slug":"teenage-mutant-ninja-turtles-source-material","vintage":"modern_rotation"},"lineage":null,"meta":{"build_inputs_sha":"5002fbe3690abc63","confidence_tier":"T1_sales_derived","generated_at_utc":"2026-10-25T12:19:21Z","methodology_version":"v0.7","schema_version":"0.2.7"},"narrative":null,"price":{"bid_ask_spread_pct":null,"by_printing":{"Foil":{"buylist":null,"fetched_at_utc":"2026-10-24T18:21:56.354874+00:00","listed_median":13,"market_price":11.09},"Normal":{"buylist":null,"fetched_at_utc":"2026-10-24T18:21:56.354874+00:00","listed_median":10,"market_price":8.68}},"cohort_relative_zscore":null,"condition":"Near Mint","condition_basis":"TCGplayer market price per printing; the vendor's per-SKU history reads the same value for the Near Mint SKU (fu396/fu397/fu398 probes, two strata: 8 games, 43 rows at >= $5 — nearest condition NM 42/43, cent-equal 28/43, misses <= 2.2%; 5 games, 28 rows at >= $0.50 on year-old groups — nearest NM 27/28, cent-equal 16/28, misses <= 9.3%, the one miss a $1.29 card whose condition SKUs sit within cents; pooled nearest NM 69/71, Wilson 95% ~90-99%; a sample, not a definition; third stratum fu506 (top 8 per game, 24 decidable card rows): NM-consistent +-10% 17/24; 1 LP to the cent, 1 nearest HP at 117x, 2 at 1.7-1.8x NM, 1 NM unpriced; 35 of 64 top rows were sealed)","fetched_at_utc":"2026-10-24T18:21:56.354874+00:00","latest_buylist":null,"latest_listed_median":10,"latest_market_price":8.68,"primary_printing":"Normal","primary_printing_in_record":"Normal","primary_printing_resolution":"exact"},"similar_cards":[],"structure":{"_methodology_version":"v0.7","_source_breakdown":{"tcgcsv_archive":14,"tcgcsv_forward":472},"as_of_date":"2026-10-24","ath_date":"2026-02-24","ath_price":23.32,"ath_run_last_date":"2026-02-24","ath_run_rows":1,"ath_run_to_end":false,"ath_since_release_date":"2026-03-12","ath_since_release_price":12.22,"ath_since_release_run_last_date":"2026-03-12","ath_since_release_run_rows":1,"ath_since_release_run_to_end":false,"atl_date":"2026-07-19","atl_price":7.21,"atl_run_last_date":"2026-07-19","atl_run_rows":1,"atl_run_to_end":false,"atl_since_release_date":null,"atl_since_release_price":null,"atl_since_release_run_last_date":null,"atl_since_release_run_rows":null,"atl_since_release_run_to_end":null,"canonical_id_v02":"d2f9c735a496","canonical_id_v03":null,"canonical_id_v1":null,"card_r14d_pct_cohort_estimator":-1.14,"card_r30d_pct_cohort_estimator":12.29,"card_r90d_pct_cohort_estimator":2.12,"climatology_baseline_pct":{"CALM":33,"DRAWDOWN":28,"HEATED":39},"cohort_label":"mtg-en-raw-nascent","cohort_median_14d_pct":0,"cohort_median_30d_pct":0,"cohort_median_90d_pct":0,"cohort_source":"derived","current_off_ath_pct":-62.78,"current_price":8.68,"history_first_date":"2026-02-24","history_first_date_series":"2026-02-24","history_last_date":"2026-10-24","history_last_date_series":"2026-10-24","history_n_distinct_closes":233,"history_n_obs":486,"history_n_obs_series":243,"liquidity_tier":"T1","notable_moments":[{"date":"2026-07-19","delta_pct":-69.1,"label":"-69% off peak","price":7.21,"type":"drawdown_low"},{"date":"2026-03-06","delta_pct":-29.5,"label":"-29% day-over-day","prev_date":"2026-03-05","prev_price":14.46,"price":10.2,"type":"outlier_spike"}],"position_in_own_range_pctile":30,"recent_steps":{"dates":[],"dates_truncated":false,"n":0,"threshold_pct":50,"window_days":120},"record_block_scope":"per_print_page","regime_entered_date":"2026-05-20","regime_label":"DRAWDOWN","regime_occupancy_pct_1y":{"CALM":0,"DRAWDOWN":70,"HEATED":30},"regime_occupancy_pct_lifetime":{"CALM":0,"DRAWDOWN":70,"HEATED":30},"regime_run_length_days":157,"regime_transitions":[{"date":"2026-04-15","from":"HEATED","to":"DRAWDOWN"},{"date":"2026-04-19","from":"DRAWDOWN","to":"HEATED"},{"date":"2026-04-21","from":"HEATED","to":"DRAWDOWN"},{"date":"2026-04-23","from":"DRAWDOWN","to":"HEATED"},{"date":"2026-04-29","from":"HEATED","to":"DRAWDOWN"},{"date":"2026-04-30","from":"DRAWDOWN","to":"HEATED"},{"date":"2026-05-09","from":"HEATED","to":"DRAWDOWN"},{"date":"2026-05-11","from":"DRAWDOWN","to":"HEATED"},{"date":"2026-05-20","from":"HEATED","to":"DRAWDOWN"}],"residual_vs_cohort_14d_pct":-1.14,"residual_vs_cohort_30d_pct":12.29,"residual_vs_cohort_90d_pct":2.12,"residual_vs_set_90d_pct":null,"series_printing":"Normal","series_printing_determinacy":{"base_decided_by":"sticky_previous","base_series_printing":"Foil","decided_by":"per_print_page","margin":null,"n_candidates":2,"pool":null,"tie_members":[]},"set_median_90d_pct_loo":null,"set_member_unit":"cards","set_movers_share_90d":null,"set_n_90d":19,"set_release_date":"2026-03-06","set_slug":"teenage-mutant-ninja-turtles-source-material"},"trajectory":{"last_step":{"date":"2026-10-24","next":8.68,"prev":8.61,"prev_date":"2026-10-23"},"return_1y_base":null,"return_1y_pct":null,"return_30d_pct":12.2898,"return_7d_pct":-4.6154,"return_90d_pct":2.1176,"series_30d":[{"date":"2026-09-24","price":7.73},{"date":"2026-09-25","price":7.73},{"date":"2026-09-26","price":7.44},{"date":"2026-09-27","price":7.73},{"date":"2026-09-28","price":7.65},{"date":"2026-09-29","price":7.65},{"date":"2026-09-30","price":7.8},{"date":"2026-10-01","price":7.75},{"date":"2026-10-02","price":8.17},{"date":"2026-10-03","price":8.2},{"date":"2026-10-04","price":8.18},{"date":"2026-10-05","price":8.32},{"date":"2026-10-06","price":8.44},{"date":"2026-10-07","price":8.86},{"date":"2026-10-08","price":8.99},{"date":"2026-10-09","price":8.84},{"date":"2026-10-10","price":8.78},{"date":"2026-10-11","price":8.92},{"date":"2026-10-12","price":9.02},{"date":"2026-10-13","price":9.22},{"date":"2026-10-14","price":9.26},{"date":"2026-10-15","price":9.1},{"date":"2026-10-16","price":8.97},{"date":"2026-10-17","price":9.1},{"date":"2026-10-18","price":8.66},{"date":"2026-10-19","price":8.55},{"date":"2026-10-20","price":8.63},{"date":"2026-10-21","price":8.54},{"date":"2026-10-22","price":8.5},{"date":"2026-10-23","price":8.61},{"date":"2026-10-24","price":8.68}],"series_90d_thinned":[{"date":"2026-07-26","price":8.5},{"date":"2026-07-28","price":8.7},{"date":"2026-07-30","price":8.88},{"date":"2026-08-01","price":7.97},{"date":"2026-08-03","price":7.27},{"date":"2026-08-05","price":7.84},{"date":"2026-08-07","price":7.72},{"date":"2026-08-09","price":7.5},{"date":"2026-08-11","price":7.78},{"date":"2026-08-13","price":7.76},{"date":"2026-08-15","price":8.14},{"date":"2026-08-17","price":8.04},{"date":"2026-08-19","price":8.01},{"date":"2026-08-21","price":8.12},{"date":"2026-08-23","price":8.27},{"date":"2026-08-25","price":7.93},{"date":"2026-08-27","price":7.88},{"date":"2026-08-29","price":8.35},{"date":"2026-08-31","price":8.72},{"date":"2026-09-02","price":8.82},{"date":"2026-09-04","price":9.03},{"date":"2026-09-06","price":9.17},{"date":"2026-09-08","price":9.39},{"date":"2026-09-10","price":9.42},{"date":"2026-09-12","price":9.01},{"date":"2026-09-14","price":8.91},{"date":"2026-09-16","price":8.36},{"date":"2026-09-18","price":8.5},{"date":"2026-09-20","price":8.26},{"date":"2026-09-22","price":8.12},{"date":"2026-09-24","price":7.73},{"date":"2026-09-26","price":7.44},{"date":"2026-09-28","price":7.65},{"date":"2026-09-30","price":7.8},{"date":"2026-10-02","price":8.17},{"date":"2026-10-04","price":8.18},{"date":"2026-10-06","price":8.44},{"date":"2026-10-08","price":8.99},{"date":"2026-10-10","price":8.78},{"date":"2026-10-12","price":9.02},{"date":"2026-10-14","price":9.26},{"date":"2026-10-16","price":8.97},{"date":"2026-10-18","price":8.66},{"date":"2026-10-20","price":8.63},{"date":"2026-10-22","price":8.5},{"date":"2026-10-24","price":8.68}],"series_key":"679230|Normal","series_printing":"Normal"},"vendor_links":{"cardmarket_url":null,"ebay_search_url":"https://www.ebay.com/sch/i.html?_nkw=Undercity%20Sewers%20Teenage%20Mutant%20Ninja%20Turtles%20Source%20Material&mkcid=1&mkrid=711-53200-19255-0&campid=5339074870&toolid=10001","pokemontcg_url":null,"scryfall_url":"https://scryfall.com/search?q=Undercity%20Sewers","tcgplayer_url":"https://www.tcgplayer.com/search/all/product?q=Undercity%20Sewers%20Teenage%20Mutant%20Ninja%20Turtles%20Source%20Material&partner=7060428&utm_campaign=affiliate&utm_medium=tcgvibes&utm_source=tcgvibes"},"_handle":{"canonical_id":"d2f9c735a496","game":"mtg","html":"https://tcgvibes.com/cards/d2f9c735a496","methodology":"https://tcgvibes.com/methodology","witness_chain":"https://tcgvibes-witness.jjk91525.workers.dev/chain/latest","build_shard":"cards/mtg/builds/5002fbe3690abc63/d2.json","provenance_fields":["price.fetched_at_utc","price.latest_market_price","price.primary_printing","meta.build_inputs_sha","meta.methodology_version","meta.schema_version","meta.confidence_tier","meta.generated_at_utc"],"page_headline":{"price":8.68,"printing":"Normal","as_of":"2026-10-24","computed_by":"witness/src/render-card.ts _heroMarketPrice, _heroDisplayPrinting, heroAsOfDay: the functions the HTML page calls on this same record (build_shard below). Unrounded: the page prints whole dollars from $100."},"reading":"`provenance_fields` lists the provenance keys THIS record actually carries, derived from it rather than written down: the price.* entries name the OBSERVATION, the meta.* entries identify the BUILD and the RULE that derived it. The witness chain carries the per-day envelope with its own code_commit and prev_hash. Every field outside `_handle` is served verbatim from the build shard. Two `_handle` entries are computed: `provenance_fields` (from the record) and `page_headline` (the figure the page rendered from this build_shard heads with, by the page's own functions; a page served from the edge cache within an hour of a build change can still show the previous build)."}}