2026-09-28: not on the chain yet.
42,657,134 rows of DEBYKO's history of 2026-09-28 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 | 181,029 | 45 | 4efb4043c8994c589b52cf896b95078a90c8d88c36cbf4fe9cc61fa0985ba250 |
| liquidation | liquidation | 129 | 1 | e4296ea3a3df54dc2c0582c80500f280b71aa0994b53b40c238c28a4bdf7235c |
| observation_depth_derived | book | 1,009,841 | 247 | 9a02da4b9dc4230d426925980f97a12d7bad2bad8a2c2a7f64ab62bbf2faac1b |
| observation_funding | funding | 145,419 | 36 | 73adbd9c61e2578b50398647162e55b35e0cc90b1ab15b98053ac7d7e2846d39 |
| observation_mark | mark | 1,214,176 | 297 | 70b9d9c2ff4072d6f5b5572cfba7cd81a72848765a22ceccfa22a374974a18eb |
| observation_open_interest | oi | 1,204,435 | 295 | 0ce080c283ea4b6642a0a0b817c27d17c594ef726dd2b475677d816febba8dad |
| observation_stats | stats | 1,081,593 | 265 | 2e6d64f2faaac9c5653b73c883d7008fbe06b0fdc46d9763e36993ba74010b28 |
| observation_ticker | ticker | 1,499,596 | 367 | 4e664542196f7c165d4f78b1a621174750fb3d53f14a5f5aa75a63418e4b20fe |
| trade | trade | 36,320,916 | 8,868 | 040aed1c760fba1ca42fb4c787906709d90175efebffb7436730e54c0206a617 |
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 20260928. With Foundry, or with curl alone; the answer is the root, 0xb9f4fbf813…a5fd9d.
cast call 0x0AF8259DBfC613825718d4d49A05F9F6fdA15086 "roots(uint32)(bytes32)" 20260928 --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":"0x081dc6810000000000000000000000000000000000000000000000000000000001352840"},"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/2026-09-28The 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=2026-09-28T12:00:00Z&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 2026-09-29. The day before is 2026-09-27. 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.