Now moves to use an integrated signer, so you can use any upstream Celestia app node to
Breaking Changes
Required new signing key in env, example:
# If using https://www.quicknode.com/docs/celestia, both endpoints are at the same URL with an auth token in the path:
CELESTIA_NODE_RPC=https://<your-instance>.celestia-mainnet.quiknode.pro/<your-token>
CELESTIA_CORE_GRPC=https://<your-instance>.celestia-mainnet.quiknode.pro:9090
# If using quicknode, this is your Token for both Node JSON RPC and Core/App gRPC
CELESTIA_NODE_WRITE_TOKEN=<your-token>
CELESTIA_SIGNING_KEY=<celestia-signing-key-hex-encoded>