2026-10-01: anchored on Base mainnet.
40,499,005 rows of DEBYKO's history of 2026-10-01 UTC, in 9 tables, under one root stored in the contract under the key 20261001.
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 | 2,078,064 | 508 | e89f2a664491d6dd609f68ef47ce9b3b4c37f8b2d52e127be401369c3033272b |
| liquidation | liquidation | 19,018 | 5 | 85e061c62ee46903eba6cd0b0f13c0588c9fab6ee55ba9af878080a376fa5409 |
| observation_depth_derived | book | 1,179,302 | 288 | ae2109e3f648ff635bca1dbc5243a36f9fc6a26690effdbfba74059917aab8f7 |
| observation_funding | funding | 782,374 | 192 | abf1886c44d27e6f17bf26a767d302d0d78865218e29918a7026db5ab4a68d3e |
| observation_mark | mark | 1,951,385 | 477 | cd32f98415c511fb516533c96dbc2d8934e20d0f54289783c8cf4543c5a54ae3 |
| observation_open_interest | oi | 1,068,017 | 261 | 7cedcd63a3343755812c0515f2aae9da99b7c024fd012fd4b52800661aede718 |
| observation_stats | stats | 1,272,829 | 311 | 1f25f9b3f55994f5c0e0fdad8c7b218914777634142756be8808a73984dac116 |
| observation_ticker | ticker | 2,484,635 | 607 | 1cb11294f006e5970cfe114ed1359079374907d830f38c0ae252e2224f0fac21 |
| trade | trade | 29,663,381 | 7,243 | 49f1649cd36cf4bacee2607f6c4d9d0178d29114518621d09bca18c261389fad |
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 20261001. With Foundry, or with curl alone; the answer is the root, 0x5dcef38620…771d3b.
cast call 0x0AF8259DBfC613825718d4d49A05F9F6fdA15086 "roots(uint32)(bytes32)" 20261001 --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":"0x081dc6810000000000000000000000000000000000000000000000000000000001352889"},"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/2026-10-01The 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=2026-10-01T12:00:00Z&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 2026-10-02. The day before is 2026-09-30. 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.