2026-10-07: anchored on Base mainnet.
94,010,948 rows of DEBYKO's history of 2026-10-07 UTC, in 9 tables, under one root stored in the contract under the key 20261007.
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 | 1,702,544 | 416 | bd5fa0ba671ce5fb1585748ef2440b52e876dc676ae521eeefdd89785e230785 |
| liquidation | liquidation | 41,079 | 11 | 450511ebd52f5ec547f459eb8be630a27d2e027f04f421aad18002f01eafe472 |
| observation_depth_derived | book | 1,301,495 | 318 | 34a4f67564f24ee9c63c662596dd79cef68eca2500b908418c0f508b01aa46aa |
| observation_funding | funding | 1,120,908 | 274 | 082240a442039b56547d511579d1c1b294ef28ed59b178a6a3cc1569033e4011 |
| observation_mark | mark | 7,372,169 | 1,800 | 1f50048a0a205da022a0671f85582b4bc8bcdef995916993daceff91ffeb891a |
| observation_open_interest | oi | 1,369,851 | 335 | e75ca531fc7237ba36f9da68e939790b593c2e1a5fedecf2ad98067e90133a4c |
| observation_stats | stats | 1,730,999 | 423 | 497a1f34817c70459be1749739a535966622bbfac1e62336439a7a2dcb12ce92 |
| observation_ticker | ticker | 10,499,787 | 2,564 | dadbf830d50f4c987f3f2ddafb6df5239a4182aa33d54c51abbb65906abd3759 |
| trade | trade | 68,872,116 | 16,815 | 863c9ad237a42d252250380ec3368d4a389be352c1dac841f834d067eeb627f2 |
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 20261007. With Foundry, or with curl alone; the answer is the root, 0xec75741194…ce6e61.
cast call 0x0AF8259DBfC613825718d4d49A05F9F6fdA15086 "roots(uint32)(bytes32)" 20261007 --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":"0x081dc681000000000000000000000000000000000000000000000000000000000135288f"},"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/2026-10-07The 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=2026-10-07T12:00:00Z&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 2026-10-08. The day before is 2026-10-06. 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.