Drop in any claim or datum. Dynamic Feed witnesses it and hands back an Ed25519-signed receipt anyone can verify — then anchor it to Bitcoin in one click for proof-of-when independent of us. Let's Encrypt for data — get your feed signed without building a signing stack.
Run a data feed others rely on? Notarize each datapoint so consumers can verify it came from you, unaltered, at a known time. Send the data, or keep it private and send only its hash — Dynamic Feed witnesses the bytes either way. One call (free key):
curl -s https://dynamicfeed.ai/v1/notarize \
-H "X-API-Key: $DF_KEY" -H "content-type: application/json" \
-d '{"payload_sha256":"<64-hex sha256 of your bytes>","subject":"acme-prices-feed"}'
That Dynamic Feed witnessed these exact bytes (or this hash) at witnessed_at — proof-of-existence and tamper-evidence, anchorable to Bitcoin so it holds even against us. It does not assert the content is true. Verify any receipt's Ed25519 signature yourself at /playground; read the format at the standard.
Sign it, anchor it, hand anyone a receipt they can check without trusting you — or us.