2026-10-08: anchored on Base mainnet.
120,738,913 rows of DEBYKO's history of 2026-10-08 UTC, in 9 tables, under one root stored in the contract under the key 20261008.
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 | 1,679,055 | 410 | df7ea52e3e61f923e601d64ab536ad7c986604ff1fae3ec9965155d108f1c41d |
| liquidation | liquidation | 87,906 | 22 | 6fa84476677af477ff4d27d5217dd4e24e780c228a1e2b8b6e7ebb3928236542 |
| observation_depth_derived | book | 1,298,462 | 318 | 3440bbba389bfcecbfc35e22e951fb9d1c605db2d5239f32d80879e14cc26b40 |
| observation_funding | funding | 1,102,390 | 270 | 70ac0602f7bc2682e926fc9b2cbcaba6f597931dbca32e5f285f9818ba3d8cb5 |
| observation_mark | mark | 7,382,822 | 1,803 | a1d855e8bcb807ccf180a5ead044e4407c72dda87b78023acdc306bf59fca92a |
| observation_open_interest | oi | 1,345,996 | 329 | 2e0744e2fb5f8088186bca653b32443d8733d2f91a61e146002d3b4a020f10ae |
| observation_stats | stats | 1,720,572 | 421 | a167bf6de0c1f1a9d4d8d408fd8cb5e00067f6bae0fbdc50907451b669ad3d29 |
| observation_ticker | ticker | 10,493,976 | 2,563 | 07eceb8febf2c7bdb7a161c4276c89f4f43a818399e4cc89f92491739dcab98e |
| trade | trade | 95,627,734 | 23,347 | 0e94c1e37905936c780e5eb868b1925df49c084264025bf09916f0def23dd535 |
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 20261008. With Foundry, or with curl alone; the answer is the root, 0x657d2f5d5d…536688.
cast call 0x0AF8259DBfC613825718d4d49A05F9F6fdA15086 "roots(uint32)(bytes32)" 20261008 --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":"0x081dc6810000000000000000000000000000000000000000000000000000000001352890"},"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/2026-10-08The 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=2026-10-08T12:00:00Z&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 day before is 2026-10-07. 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.