2026-10-03: anchored on Base mainnet.
62,377,059 rows of DEBYKO's history of 2026-10-03 UTC, in 9 tables, under one root stored in the contract under the key 20261003.
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 | 2,230,528 | 545 | ae0fd6b7b520d2cc9dc0c7aac4ffadad92996d046809228855a22b417d2fd361 |
| liquidation | liquidation | 6,990 | 2 | 889e1fb5fee03d0f21c7dc40469ec9c45fb414306963c576127bc479ab5d61ae |
| observation_depth_derived | book | 1,206,661 | 295 | f3f607cc690bf3ddc2ba61bcf734f1f4c9e765aaa8ed52f9fcb2da194e218c7c |
| observation_funding | funding | 1,151,738 | 282 | 41a4f1d23f9bab423213b1312c0118099c4ccd649aabc574b8d3e8e0675e3995 |
| observation_mark | mark | 7,302,537 | 1,783 | 090e331b14e46ba3004ffbae846df39a04b58d026a9f788ea05a4bbfb50cfcee |
| observation_open_interest | oi | 1,398,812 | 342 | 9072a127197e6a9d0df8d6384669ed57bcff7bc6519a476472158e962580bd5b |
| observation_stats | stats | 1,754,843 | 429 | 245c8be29a1203534115e8d3c58a232747b8cf4c296c96bcf55a1b3326a0d358 |
| observation_ticker | ticker | 10,672,539 | 2,606 | bd556126aea28fbc1ad4b0c72ce3c08f12d3e3d706157e4c3f9fc2690331ee19 |
| trade | trade | 36,652,411 | 8,949 | 451c472943cb8aad202409eac4a5bb7d80c7b92e4222b7202e91c8f93070c3a4 |
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 20261003. With Foundry, or with curl alone; the answer is the root, 0xd99b99e4bd…58f484.
cast call 0x0AF8259DBfC613825718d4d49A05F9F6fdA15086 "roots(uint32)(bytes32)" 20261003 --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":"0x081dc681000000000000000000000000000000000000000000000000000000000135288b"},"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/2026-10-03The 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=2026-10-03T12:00:00Z&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 2026-10-04. The day before is 2026-10-02. 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.