Solana Devnet · Permissionless
Trustless
document
signing,
on-chain.
Every signature anchored to Solana's public mainnet. Verifiable by anyone, forever. No vendor lock-in, no subscription, no trust required.
Avg. tx cost
$0.00025 USD
Finality
~400 ms
Vendor lock-in
none
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a3f7c8e2 b1d94f60 71a2e85c 3b0d9f4e 8a219c7b 5f036d82 c4e1a09b 3d78f2c1 a3f7c8e2 b1d94f60 71a2e85c 3b0d9f4e 8a219c7b 5f036d82 c4e1a09b 3d78f2c1 a3f7c8e2 b1d94f60 71a2e85c 3b0d9f4e 8a219c7b 5f036d82 c4e1a09b 3d78f2c1 a3f7c8e2 b1d94f60 71a2e85c 3b0d9f4e 8a219c7b 5f036d82 c4e1a09b 3d78f2c1 a3f7c8e2 b1d94f60 71a2e85c 3b0d9f4e 8a219c7b 5f036d82 c4e1a09b 3d78f2c1 a3f7c8e2 b1d94f60 71a2e85c 3b0d9f4e 8a219c7b 5f036d82 c4e1a09b 3d78f2c1 a3f7c8e2 b1d94f60 71a2e85c 3b0d9f4e 8a219c7b 5f036d82 c4e1a09b 3d78f2c1 a3f7c8e2 b1d94f60 71a2e85c 3b0d9f4e 8a219c7b 5f036d82 c4e1a09b 3d78f2c1 a3f7c8e2 b1d94f60 71a2e85c 3b0d9f4e 8a219c7b 5f036d82 c4e1a09b 3d78f2c1 a3f7c8e2 b1d94f60 71a2e85c 3b0d9f4e 8a219c7b 5f036d82 c4e1a09b 3d78f2c1 a3f7c8e2 b1d94f60 71a2e85c 3b0d9f4e 8a219c7b 5f036d82 c4e1a09b 3d78f2c1 a3f7c8e2 b1d94f60 71a2e85c 3b0d9f4e 8a219c7b 5f036d82 c4e1a09b 3d78f2c1
a3f7c8e2 b1d94f60 71a2e85c 3b0d9f4e 8a219c7b 5f036d82 c4e1a09b 3d78f2c1 a3f7c8e2 b1d94f60 71a2e85c 3b0d9f4e 8a219c7b 5f036d82 c4e1a09b 3d78f2c1 a3f7c8e2 b1d94f60 71a2e85c 3b0d9f4e 8a219c7b 5f036d82 c4e1a09b 3d78f2c1 a3f7c8e2 b1d94f60 71a2e85c 3b0d9f4e 8a219c7b 5f036d82 c4e1a09b 3d78f2c1 a3f7c8e2 b1d94f60 71a2e85c 3b0d9f4e 8a219c7b 5f036d82 c4e1a09b 3d78f2c1 a3f7c8e2 b1d94f60 71a2e85c 3b0d9f4e 8a219c7b 5f036d82 c4e1a09b 3d78f2c1 a3f7c8e2 b1d94f60 71a2e85c 3b0d9f4e 8a219c7b 5f036d82 c4e1a09b 3d78f2c1 a3f7c8e2 b1d94f60 71a2e85c 3b0d9f4e 8a219c7b 5f036d82 c4e1a09b 3d78f2c1 a3f7c8e2 b1d94f60 71a2e85c 3b0d9f4e 8a219c7b 5f036d82 c4e1a09b 3d78f2c1 a3f7c8e2 b1d94f60 71a2e85c 3b0d9f4e 8a219c7b 5f036d82 c4e1a09b 3d78f2c1 a3f7c8e2 b1d94f60 71a2e85c 3b0d9f4e 8a219c7b 5f036d82 c4e1a09b 3d78f2c1 a3f7c8e2 b1d94f60 71a2e85c 3b0d9f4e 8a219c7b 5f036d82 c4e1a09b 3d78f2c1
a3f7c8e2 b1d94f60 71a2e85c 3b0d9f4e 8a219c7b 5f036d82 c4e1a09b 3d78f2c1 a3f7c8e2 b1d94f60 71a2e85c 3b0d9f4e 8a219c7b 5f036d82 c4e1a09b 3d78f2c1 a3f7c8e2 b1d94f60 71a2e85c 3b0d9f4e 8a219c7b 5f036d82 c4e1a09b 3d78f2c1 a3f7c8e2 b1d94f60 71a2e85c 3b0d9f4e 8a219c7b 5f036d82 c4e1a09b 3d78f2c1 a3f7c8e2 b1d94f60 71a2e85c 3b0d9f4e 8a219c7b 5f036d82 c4e1a09b 3d78f2c1 a3f7c8e2 b1d94f60 71a2e85c 3b0d9f4e 8a219c7b 5f036d82 c4e1a09b 3d78f2c1 a3f7c8e2 b1d94f60 71a2e85c 3b0d9f4e 8a219c7b 5f036d82 c4e1a09b 3d78f2c1 a3f7c8e2 b1d94f60 71a2e85c 3b0d9f4e 8a219c7b 5f036d82 c4e1a09b 3d78f2c1 a3f7c8e2 b1d94f60 71a2e85c 3b0d9f4e 8a219c7b 5f036d82 c4e1a09b 3d78f2c1 a3f7c8e2 b1d94f60 71a2e85c 3b0d9f4e 8a219c7b 5f036d82 c4e1a09b 3d78f2c1 a3f7c8e2 b1d94f60 71a2e85c 3b0d9f4e 8a219c7b 5f036d82 c4e1a09b 3d78f2c1 a3f7c8e2 b1d94f60 71a2e85c 3b0d9f4e 8a219c7b 5f036d82 c4e1a09b 3d78f2c1
on-chain
a3f7c8e2
on-chain
3b0d9f4e
on-chain
71a2e85c
/ 01
Upload locally
SHA-256 hash computed in your browser. The document never leaves your device.
/ 02
Sign on-chain
Each signature becomes a Solana transaction. Wallet-based auth via Phantom, Backpack, or Solflare.
/ 03
Verify forever
Anyone can verify authenticity by dropping the file. No account, no login, no API key.