A Bitcoin Anchor. REQUIRES ?digest= on the paid request — a signed request without it is refused before the gate and no money moves. A signed certificate binding the buyer's sha256 digest in its attests field, plus a stable proof URL serving the OpenTimestamps proof bytes — pending on purchase, upgrading automatically to a Bitcoin-confirmed proof verifiable with the standard ots tool against block headers alone. Instant; one digest, one submission, nothing recurs. Full listi…
| Network | Scheme | Amount | Pay To |
|---|---|---|---|
| Base | exact | $1.00 USDC | 0xDD35...9bd0 |
| Polygon | exact | $1.00 USDC | 0xDD35...9bd0 |
| Arbitrum One | exact | $1.00 USDC | 0xDD35...9bd0 |
| eip155:480 | exact | 1.00 tokens | 0xDD35...9bd0 |
| solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp | exact | 1.00 tokens | DGxcPr...vMgE |