=== YUMO YUMO PRICE EPOCH v1 ===
#
# Yumo Yumo — open price ledger
# Product prices read from real receipts, published permanently.
#
# Publisher : Yumo Yumo Inc · https://yumoyumo.com
# Sealed by : 32T9x5xGz6uaHtPnRhUhqHgJyWshbDJas7RYahEJjMjE (Solana mainnet)
#             One memo per epoch, no other authority:
#             yumoyumo:price-epoch:v1:<n>:<merkle_root>:<manifest_hash>:<arweave_tx>
#
# Each observation below is identity-free: no buyer, no wallet, no receipt
# id, and no time — merchant, city, date and price only. Receipt leaves are
# opaque hashes; a receipt sealed with a wallet can be proven its owner's by
# signing with that wallet's key, and reveals nothing to anyone else.
#
# Verify (needs nothing but this file and the memo above):
#   1. keccak256(this file) === <manifest_hash> in the memo
#   2. leaf = keccak256(utf8(line))          — the line IS the preimage
#      node = keccak256(concat(sort([l,r]))) — 32-byte pairs, sorted
#      leaves sorted ascending; an odd node is carried up unchanged
#   3. fold every price-obs:v1| line + every receipt leaf
#      → must equal MERKLE_ROOT below and the root in the memo
#
# The chain proves this data was not altered. It does not prove we read
# each receipt correctly: observations are validated before publication,
# and whatever fails is withheld rather than published.
#
# When we get one wrong after publishing it, we say so here rather than
# quietly. A === WITHDRAWN === section, when present, lists observations from
# earlier epochs that this epoch retracts:
#   price-withdrawn:v1|<epoch>|<leaf_hash>|<reason>
# <leaf_hash> is keccak256 of the published line, so you can find it in that
# epoch's manifest yourself. Apply epochs in order and drop what is withdrawn;
# a corrected value, where one exists, is republished here as a normal
# observation. Withdrawals fold into the root below, so a retraction is sealed
# as firmly as the mistake was.
#
# Row : price-obs:v1|<canonical_id>|<product_name>|<brand>|<pack_size>
#       |<category_path>|<country>|<city>|<merchant>|<obs_date>|<unit_price>
#       |<currency>|<unit_type>|<kind>|<discounted>
#       kind = product | category (category = loose produce, id is a category)
#       discounted = 1 if the price was on offer, else 0
# Recipe    : https://arweave.net/eabxr24slHrMbnZWIaKL3QiL7oitneL7y5sBHzK6EXQ
# Licence   : CC0-1.0 · https://creativecommons.org/publicdomain/zero/1.0/
#             Public domain. Take it, republish it, build on it.
#             Attribution appreciated, never required.
#
EPOCH | 98
WINDOW_START | 2026-10-20T21:00:14.329Z
WINDOW_END | 2026-10-21T21:00:14.370Z
MERKLE_ROOT | 74414918d7c176b81d85554bc914028651ac567d85fb67a008c00c5a356e7103
OBSERVATION_COUNT | 8
RECEIPT_COUNT | 10
CATALOG_HASH | 79cf41bab6a393f3576af26c451e319af0bf1991f5feb95172611725476bed15
=== OBSERVATIONS ===
price-obs:v1|2fd882f4-f6b4-4e92-8848-dc56e8e46b60|Tadelle Çikolata 30g|tadelle|30g|groceries.snacks_nuts.chocolate_candy|TR|IZMIR|BIM|2026-10-07|29.50|TRY|adet|product|0
price-obs:v1|41b68530-dbeb-47c7-a188-d1df606e90ae|Su 1 5l|hayat|5l|groceries.beverages.still_water|TR|IZMIR|BIM|2026-10-07|12.25|TRY|adet|product|0
price-obs:v1|551b428b-7d58-4540-865c-0872bef93d01|Dimes Meyve Suyu 1lt|dimes|1l|groceries.beverages.fruit_juice|TR|IZMIR|KADIKALE|2026-10-07|69.90|TRY|adet|product|0
price-obs:v1|5b82e908-e848-4a2d-be38-1673a39fe651|Mısır Nişastası 200g||200g|groceries.dry_goods.flour_sugar|TR|IZMIR|BIM|2026-10-07|16.50|TRY|adet|product|0
price-obs:v1|84a1c941-61ea-49b7-96c1-cb9aa6a815ec|Ekmek|||groceries.bakery.bread|TR|IZMIR|FIRAT İHTİYAÇ MADDELERİ GIDA VE İNŞAAT SANAYİ|2026-10-07|15.00|TRY|adet|product|0
price-obs:v1|ad46b319-9a06-438a-bce4-cdf62d043978|Salatalik|||groceries.produce.fresh_veg|TR|IZMIR|KADIKALE|2026-10-07|37.90|TRY|kg|category|0
price-obs:v1|f8fe0314-7312-46f3-a60d-ac9a976d09db|Muayene/Reçete Katılım Payı|||health.medicine_rx|TR|IZMIR|ÇAMDİBİ ECZANESİ ESRA ÇAĞLAYAN|2026-10-07|3.76|TRY|adet|product|0
price-obs:v1|fe7a301c-7eef-4cf6-aefd-06a20793bf6a|Kinder Joy 20g|kinder|20g|groceries|TR|IZMIR|Şok Marketler|2026-10-07|44.50|TRY|adet|product|0
=== RECEIPT_LEAVES ===
3293d0c8b6b4995e1f24a03e10f6b326c282102973ef136e8861eab37debb1c8
34703a7d409359a7bae366cd59c4ced8ffe6ab1f8e807b8806c29bc1b81afb5a
36e80ede1734539144af41794556ef248252ceafe9595f85b5ffafaca6e6311b
6da8722cafa5fd531997bd6c79c49cebdf709c89c1078586453054647821d985
70b6ceacde3eb7fa7622fea81c917eec2c9958d8b997fcecb6f7317970992478
82d7f915f85d7105c8d1ba4666ff4bf4322d0f6154bed6dbf9b8f2b4d78615e5
943354ac6dd92e775e3513dfef70904a4ab3cba30a9c01f30af39b05b667c424
ae218427758d48e823650232324c9f758cf592d666c89a93f246e483d1a8729c
ae474b7dc540701c97b4c8bc72430ef6f321d0843eafe6d313e052f6f7ea1b60
c2aa38e520ae4db75543c2ed015350e028f61795ea7be7a4fbd163f50ce405f4