From 9823d1d7081aef3240180e7003e3113a0e937a96 Mon Sep 17 00:00:00 2001
From: Sergey Markov <sergey@markow.su>
Date: Sun, 8 May 2022 04:47:37 +0300
Subject: [PATCH] Remove donation address

---
 README.md        |  6 +-----
 src/ckpool.c     |  3 +--
 src/ckpool.h     |  4 ----
 src/stratifier.c | 25 +------------------------
 4 files changed, 3 insertions(+), 35 deletions(-)

diff --git a/README.md b/README.md
index 89c34734..66bdb326 100644
--- a/README.md
+++ b/README.md
@@ -3,11 +3,7 @@ CKPOOL + CKPROXY + libckpool by Con Kolivas
 Ultra low overhead massively scalable multi-process, multi-threaded modular
 bitcoin mining pool, proxy, passthrough, and library in c for Linux.
 
-CKPOOL is code provided free of charge under the GPLv3 license but its development
-is mostly paid for by commissioned funding, and the pool by default contributes
-0.5% of solved blocks in pool mode to the development team. Please consider leaving
-this contribution in the code if you are running it on a pool or contributing to the
-authors listed in AUTHORS if you use this code to aid funding further development.
+CKPOOL is code provided free of charge under the GPLv3 license
 
 ---
 LICENSE:
diff --git a/src/ckpool.c b/src/ckpool.c
index 480d3bda..db9455eb 100644
--- a/src/ckpool.c
+++ b/src/ckpool.c
@@ -1824,9 +1824,8 @@ int main(int argc, char **argv)
 			ckp.btcdpass[i] = strdup("pass");
 	}
 
-	ckp.donaddress = "14BMjogz69qe8hk9thyzbmR5pg34mVKB1e";
 	if (!ckp.btcaddress)
-		ckp.btcaddress = ckp.donaddress;
+		quit(0, "BTCR address is not set (config key btcaddress)");
 	if (!ckp.blockpoll)
 		ckp.blockpoll = 100;
 	if (!ckp.nonce1length)
diff --git a/src/ckpool.h b/src/ckpool.h
index 97d87bf5..6cd06b6c 100644
--- a/src/ckpool.h
+++ b/src/ckpool.h
@@ -247,10 +247,6 @@ struct ckpool_instance {
 	bool script; // Address is a script address
 	bool segwit; // Address is a segwit address
 	char *btcsig; // Optional signature to add to coinbase
-	char *donaddress; // Donation address
-	bool donscript; // Donation is a script
-	bool donsegwit; // Donation is segwit
-	bool donvalid; // Donation address works on this network
 
 	/* Stratum options */
 	server_instance_t **servers;
diff --git a/src/stratifier.c b/src/stratifier.c
index 33046f98..7f385c24 100644
--- a/src/stratifier.c
+++ b/src/stratifier.c
@@ -409,8 +409,6 @@ struct stratifier_data {
 
 	char txnbin[48];
 	int txnlen;
-	char dontxnbin[48];
-	int dontxnlen;
 
 	pool_stats_t stats;
 	/* Protects changes to pool stats */
@@ -622,12 +620,7 @@ static void generate_coinbase(const ckpool_t *ckp, workbase_t *wb)
 
 	// Generation value
 	g64 = wb->coinbasevalue;
-	if (ckp->donvalid) {
-		d64 = g64 / 200; // 0.5% donation
-		g64 -= d64; // To guarantee integers add up to the original coinbasevalue
-		wb->coinb2bin[wb->coinb2len++] = 2 + wb->insert_witness;
-	} else
-		wb->coinb2bin[wb->coinb2len++] = 1 + wb->insert_witness;
+	wb->coinb2bin[wb->coinb2len++] = 1 + wb->insert_witness;
 
 	u64 = (uint64_t *)&wb->coinb2bin[wb->coinb2len];
 	*u64 = htole64(g64);
@@ -649,16 +642,6 @@ static void generate_coinbase(const ckpool_t *ckp, workbase_t *wb)
 		wb->coinb2len += witnessdata_size;
 	}
 
-	if (ckp->donvalid) {
-		u64 = (uint64_t *)&wb->coinb2bin[wb->coinb2len];
-		*u64 = htole64(d64);
-		wb->coinb2len += 8;
-
-		wb->coinb2bin[wb->coinb2len++] = sdata->dontxnlen;
-		memcpy(wb->coinb2bin + wb->coinb2len, sdata->dontxnbin, sdata->dontxnlen);
-		wb->coinb2len += sdata->dontxnlen;
-	}
-
 	wb->coinb2len += 4; // Blank lock
 
 	wb->coinb2 = bin2hex(wb->coinb2bin, wb->coinb2len);
@@ -2376,7 +2359,6 @@ static sdata_t *duplicate_sdata(const sdata_t *sdata)
 
 	/* Copy the transaction binaries for workbase creation */
 	memcpy(dsdata->txnbin, sdata->txnbin, 48);
-	memcpy(dsdata->dontxnbin, sdata->dontxnbin, 48);
 
 	/* Use the same work queues for all subproxies */
 	dsdata->ssends = sdata->ssends;
@@ -8750,11 +8732,6 @@ void *stratifier(void *arg)
 		/* Store this for use elsewhere */
 		hex2bin(scriptsig_header_bin, scriptsig_header, 41);
 		sdata->txnlen = address_to_txn(sdata->txnbin, ckp->btcaddress, ckp->script, ckp->segwit);
-
-		if (generator_checkaddr(ckp, ckp->donaddress, &ckp->donscript, &ckp->donsegwit)) {
-			ckp->donvalid = true;
-			sdata->dontxnlen = address_to_txn(sdata->dontxnbin, ckp->donaddress, ckp->donscript, ckp->donsegwit);
-		}
 	}
 
 	randomiser = time(NULL);