2026-09-27: not on the chain yet.
25,165,809 rows of DEBYKO's history of 2026-09-27 UTC, in 9 tables, under one root.
The anchor proves the data did not change after the anchor time; it proves nothing about its correctness at collection. Nothing of this day is on the chain yet: the root below is DEBYKO's own until it is posted, and a proof of one of its rows answers ANCHOR_NOT_YET.
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 | 179,824 | 44 | 6281c2b63337ba672f15593f0976209dfeae53b6a1c668ca26736ddf5b054791 |
| liquidation | liquidation | 80 | 1 | 8e6f57b62cecbcfca67fd103b7b507782ef21bbbf99edfc455273bc517dc2351 |
| observation_depth_derived | book | 1,008,021 | 247 | 9cdf5a92616484c222605c867e8af254627bacbd72b91009b6b90f9016fa3533 |
| observation_funding | funding | 117,329 | 29 | c95d0bd7e5b988436334a54cc0be9c645d83c4421c6510b6d32a4654c4bcf7e9 |
| observation_mark | mark | 1,189,950 | 291 | 43179ec663837f7fabdff892826bfc9d62ce2641a1a4c885c8f76844e7315db6 |
| observation_open_interest | oi | 1,196,448 | 293 | 27f99ab8b7585bbd71fb858c42504c3180be44d514717c61ff2840fe9369b554 |
| observation_stats | stats | 1,069,628 | 262 | 0116df72cae773e9fd8ff3ff9daeb2825b70e9ecd1c089c667e63d0fd8eadd46 |
| observation_ticker | ticker | 1,451,595 | 355 | 87a2ed502ffff57f941a2f76d2a86ef3b5012a17bb4502fc75d650ce21ef6717 |
| trade | trade | 18,952,934 | 4,628 | d5e98f812d8a31028f69d213405d3498c7ea29f85d013bde1f8a5762149e9cc1 |
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.
The root on the chain
roots(uint32) of the contract, with the key 20260927. With Foundry, or with curl alone; the answer is the root, 0xdc98782ffb…8f5891.
cast call 0x0AF8259DBfC613825718d4d49A05F9F6fdA15086 "roots(uint32)(bytes32)" 20260927 --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":"0x081dc681000000000000000000000000000000000000000000000000000000000135283f"},"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/2026-09-27The 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=2026-09-27T12:00:00Z&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 2026-09-28. The day before is 2026-09-26. 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.