checksum.openverbs.com
Route probed: GET https://checksum.openverbs.com/v1/crc32
Category: eat:onchain/crypto data (tags: chain-data, data-tools) · Status: listing listed, probe active · Listing: 0.002 USD, 1 payers / 1 calls (30d, Bazaar) · Listed in: agentic-market, cdp-bazaar
Last probe: 2026-10-23T15:38:30Z (40 min ago) · Recent valid 402: 2/2 · p50 3237 ms
probe-only: no paid test-buys yet. No index until 3 paid buys on 3 different days.
Badge: 
Paid test-buys
None yet.
402 challenge checks (since 2026-10-23T15:38:30Z)
1 valid 402s checked: terms consistent 1, Base USDC offered 1, price matches listing 1 (differs 0), payTo changed vs previous probe 0.
Unpaid probes (newest first, up to 200; raw receipts are kept 7 days, then in the archive)
| Receipt | UTC time | Method | Status | Valid 402 | ms | Listed amount (atomic) | Quoted amount (atomic) | Quoted payTo | Header bytes | Response sha256 | Signed | Route | Checks |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 9d57206b75de4aa300b4 | 2026-10-23T15:38:30Z | GET | 402 | yes | 3237 | 2000 | 2000 | 0xb3f4de10… | 2188 | 24fefb8fb367f0e3 | per-receipt | primary | terms ok · Base USDC |
| 8080b8c5b8b0b2bbc347 | 2026-10-23T12:44:30Z | GET | 402 | yes | 143 | 2000 | 2000 | 0xb3f4de10… | 2188 | 4934b779c2ce22a7 | snapshot | primary |
Other listed routes
https://checksum.openverbs.com/v1/crc32CRC-32 (IEEE 802.3 polynomial, as used by zip, gzip and PNG) over the input payload. Returns the checksum as an unsigned integer and 8-digit hex. Non-cryptograp (cdp-bazaar)https://checksum.openverbs.com/v1/crc16CRC-16 over the input payload in one of several standard variants (ccitt-false, xmodem, modbus, ibm; default ccitt-false). Returns the checksum as an unsigned i (cdp-bazaar)https://checksum.openverbs.com/v1/adler32Adler-32 checksum (as used by zlib) over the input payload. Faster than CRC-32 but weaker for short inputs. Returns the checksum as an unsigned integer and 8-di (cdp-bazaar)https://checksum.openverbs.com/v1/fletcherFletcher checksum over the input payload, in 16-bit (default) or 32-bit width. Returns the checksum as an unsigned integer and hex. Non-cryptographic. (cdp-bazaar)
Seller? Reply or dispute. Amounts are in the asset's atomic units (USDC: 6 decimals).