2026-10-04: anchored on Base mainnet.
66,200,466 rows of DEBYKO's history of 2026-10-04 UTC, in 9 tables, under one root stored in the contract under the key 20261004.
The anchor proves the data did not change after the anchor time; it proves nothing about its correctness at collection. The root below is what the chain holds for this day: check it there, not here.
The 9 tables under the root.
Each table's rows of the day form one Merkle tree (RFC 6962); each tree's root, with its table, day, row count and schema version, is one leaf of the day's tree, in table-name order. Chunks are the 4,096-row pieces a proof is read from.
| Table | Layer | Rows | Chunks | Partition root |
|---|---|---|---|---|
| candle | candles | 2,271,807 | 555 | 575bde0f1ae1789b253a26aacb967b6e78ab7bd2abfd3a92ce362fe6f971464f |
| liquidation | liquidation | 9,794 | 3 | 964b014485c13ccb936e7f59e01be3d71d2dcbd4227c545c55064f056d9c03f2 |
| observation_depth_derived | book | 1,205,213 | 295 | c5c9975c6840d87e14eb533433e5a78276aa7888de1c6f454c03e163954c9cf9 |
| observation_funding | funding | 1,178,662 | 288 | b3633271a6daa8d8ccd59f669c599d708153680f681474663ee18c7b0dd287ba |
| observation_mark | mark | 7,318,401 | 1,787 | 490f313b85489faba8cbb12b81b6c4fd98a8c7608d81ad63887b279b8527a1e9 |
| observation_open_interest | oi | 1,420,309 | 347 | 6d93cfe2af9d6aaf6af4a9f2cb0d02271161a3c888f6445cdd48e7eca048b4ec |
| observation_stats | stats | 1,780,849 | 435 | 87d59de0b1ca5e2692ac24d20f11b69c0a8badb4452ae6f2d169c631202cab73 |
| observation_ticker | ticker | 10,808,507 | 2,639 | fc514c91fa0e0fd1b29c5c4e5e6c61a62ce6166ca49bdee0306a3247ca6555dc |
| trade | trade | 40,206,924 | 9,817 | 8fa68bc7a3be10f9b8b90edb948edc92627ed951ec41e9888c21212916bd02a9 |
Check this day without trusting DEBYKO.
The same steps as docs.debyko.com/attest/verify, with this day's values filled in. The first asks the chain alone; the others prove one row of the day under the root it returns. Any public Base RPC does in place of https://mainnet.base.org. Or let your browser do all four for that row: verify it here.
The root on the chain
roots(uint32) of the contract, with the key 20261004. With Foundry, or with curl alone; the answer is the root, 0x6a83b79f16…c37d25.
cast call 0x0AF8259DBfC613825718d4d49A05F9F6fdA15086 "roots(uint32)(bytes32)" 20261004 --rpc-url https://mainnet.base.org
curl -s https://mainnet.base.org -H 'content-type: application/json' \
-d '{"jsonrpc":"2.0","id":1,"method":"eth_call","params":[{"to":"0x0AF8259DBfC613825718d4d49A05F9F6fdA15086","data":"0x081dc681000000000000000000000000000000000000000000000000000000000135288c"},"latest"]}'What DEBYKO says about it
The day's root and its partitions from the API, without a key: it must be the root the chain returned.
curl -s https://api.debyko.com/v2/anchors/2026-10-04The proof of one row
Any stored row of the day, by its listing, layer and own time. Proofs need no account and no key (30 a minute and 2,000 a day from one address). This one is BTCUSDT's 12:00 trade candle on BINANCE-USDM.
curl -s "https://api.debyko.com/v2/anchors/proof?venue=BINANCE-USDM&symbol=BTCUSDT&layer=candles&at=2026-10-04T12:00:00Z&tie=trade" > proof.jsonThe row under the chain's root
verify.py from github.com/debyko/verify (one file, the standard library only, MIT) hashes the row, walks both paths and reads the root from the contract: ✓ valid, or ✗ and the step that failed.
curl -sO https://raw.githubusercontent.com/debyko/verify/main/verify.py
python3 verify.py proof.json --rpc https://mainnet.base.org --contract 0x0AF8259DBfC613825718d4d49A05F9F6fdA15086All anchored days, with their roots.
The next day is 2026-10-05. The day before is 2026-10-03. The list carries every day's status, transaction and rows per table.
The contract and its transactions.
DebykoAnchor's verified source, every Anchored event and the transaction of this day, on BaseScan.