diff --git a/README.md b/README.md
index 5c17728..78060ca 100644
--- a/README.md
+++ b/README.md
@@ -10,9 +10,9 @@
 
 Package namesys defines `Resolver` and `Publisher` interfaces for IPNS paths, that is, paths in the form of `/ipns/<name_to_be_resolved>`. A "resolved" IPNS path becomes an `/ipfs/<cid>` path.
 
-Traditionally, these paths would be in the form of `/ipns/peer_id`, which references an IPNS record in a distributed `ValueStore` (usually the IPFS DHT).
+Traditionally, these paths would be in the form of `/ipns/{libp2p-key}`, which references an IPNS record in a distributed `ValueStore` (usually the IPFS DHT).
 
-Additionally, the /ipns/ namespace can also be used with domain names that use DNSLink (/ipns/my.domain.example, see https://dnslink.io) and proquint strings.
+Additionally, the `/ipns/` namespace can also be used with domain names that use DNSLink (`/ipns/en.wikipedia-on-ipfs.org`, see https://docs.ipfs.io/concepts/dnslink/).
 
 The package provides implementations for all three resolvers.
 
diff --git a/go.mod b/go.mod
index ad59446..13c1df7 100644
--- a/go.mod
+++ b/go.mod
@@ -1,7 +1,6 @@
 module github.com/ipfs/go-namesys
 
 require (
-	github.com/bren2010/proquint v0.0.0-20160323162903-38337c27106d
 	github.com/gogo/protobuf v1.3.2
 	github.com/hashicorp/golang-lru v0.5.4
 	github.com/ipfs/go-cid v0.0.7
diff --git a/go.sum b/go.sum
index 9705162..47f2ddd 100644
--- a/go.sum
+++ b/go.sum
@@ -8,8 +8,6 @@ github.com/OneOfOne/xxhash v1.2.2/go.mod h1:HSdplMjZKSmBqAxg5vPj2TmRDmfkzw+cTzAE
 github.com/Stebalien/go-bitfield v0.0.1/go.mod h1:GNjFpasyUVkHMsfEOk8EFLJ9syQ6SI+XWrX9Wf2XH0s=
 github.com/aead/siphash v1.0.1/go.mod h1:Nywa3cDsYNNK3gaciGTWPwHt0wlpNV15vwmswBAUSII=
 github.com/armon/consul-api v0.0.0-20180202201655-eb2c6b5be1b6/go.mod h1:grANhF5doyWs3UAsr3K4I6qtAmlQcZDesFNEHPZAzj8=
-github.com/bren2010/proquint v0.0.0-20160323162903-38337c27106d h1:QgeLLoPD3kRVmeu/1al9iIpIANMi9O1zXFm8BnYGCJg=
-github.com/bren2010/proquint v0.0.0-20160323162903-38337c27106d/go.mod h1:Jbj8eKecMNwf0KFI75skSUZqMB4UCRcndUScVBTWyUI=
 github.com/btcsuite/btcd v0.0.0-20190213025234-306aecffea32/go.mod h1:DrZx5ec/dmnfpw9KyYoQyYo7d0KEvTkk/5M/vbZjAr8=
 github.com/btcsuite/btcd v0.0.0-20190523000118-16327141da8c/go.mod h1:3J08xEfcugPacsc34/LKRU2yO7YmuT8yt28J8k2+rrI=
 github.com/btcsuite/btcd v0.0.0-20190605094302-a0d1e3e36d50/go.mod h1:3J08xEfcugPacsc34/LKRU2yO7YmuT8yt28J8k2+rrI=
diff --git a/namesys.go b/namesys.go
index b28c133..f1c1d22 100644
--- a/namesys.go
+++ b/namesys.go
@@ -8,7 +8,6 @@
 //
 // Additionally, the /ipns/ namespace can also be used with domain names that
 // use DNSLink (/ipns/<dnslink_name>, https://docs.ipfs.io/concepts/dnslink/)
-// and proquint strings.
 //
 // The package provides implementations for all three resolvers.
 package namesys
@@ -38,15 +37,14 @@ import (
 // Uses several Resolvers:
 // (a) IPFS routing naming: SFS-like PKI names.
 // (b) dns domains: resolves using links in DNS TXT records
-// (c) proquints: interprets string as the raw byte data.
 //
 // It can only publish to: (a) IPFS routing naming.
 //
 type mpns struct {
 	ds ds.Datastore
 
-	dnsResolver, proquintResolver, ipnsResolver resolver
-	ipnsPublisher                               Publisher
+	dnsResolver, ipnsResolver resolver
+	ipnsPublisher             Publisher
 
 	staticMap map[string]path.Path
 	cache     *lru.Cache
@@ -125,7 +123,6 @@ func NewNameSystem(r routing.ValueStore, opts ...Option) (NameSystem, error) {
 		ns.dnsResolver = NewDNSResolver(madns.DefaultResolver.LookupTXT)
 	}
 
-	ns.proquintResolver = new(ProquintResolver)
 	ns.ipnsResolver = NewIpnsResolver(r)
 	ns.ipnsPublisher = NewIpnsPublisher(r, ns.ds)
 
@@ -188,7 +185,6 @@ func (ns *mpns) resolveOnceAsync(ctx context.Context, name string, options opts.
 	// Resolver selection:
 	// 1. if it is a PeerID/CID/multihash resolve through "ipns".
 	// 2. if it is a domain name, resolve through "dns"
-	// 3. otherwise resolve through the "proquint" resolver
 
 	var res resolver
 	ipnsKey, err := peer.Decode(key)
@@ -228,11 +224,9 @@ func (ns *mpns) resolveOnceAsync(ctx context.Context, name string, options opts.
 	} else if _, ok := dns.IsDomainName(key); ok {
 		res = ns.dnsResolver
 	} else {
-		// TODO: remove proquint?
-		// dns.IsDomainName(key) will return true for proquint strings,
-		// so this block is a dead code.
-		// (alternative is to move this before DNS check)
-		res = ns.proquintResolver
+		out <- onceResult{err: fmt.Errorf("invalid IPNS root: %q", key)}
+		close(out)
+		return out
 	}
 
 	resCh := res.resolveOnceAsync(ctx, key, options)
diff --git a/proquint.go b/proquint.go
deleted file mode 100644
index b918ec9..0000000
--- a/proquint.go
+++ /dev/null
@@ -1,34 +0,0 @@
-package namesys
-
-import (
-	"context"
-	"errors"
-
-	proquint "github.com/bren2010/proquint"
-	path "github.com/ipfs/go-path"
-	opts "github.com/ipfs/interface-go-ipfs-core/options/namesys"
-)
-
-// ProquintResolver implements the Resolver interface for proquint identifiers
-// (see http://arxiv.org/html/0901.4016).
-type ProquintResolver struct{}
-
-// Resolve implements Resolver.
-func (r *ProquintResolver) Resolve(ctx context.Context, name string, options ...opts.ResolveOpt) (path.Path, error) {
-	return resolve(ctx, r, name, opts.ProcessOpts(options))
-}
-
-// resolveOnce implements resolver. Decodes the proquint string.
-func (r *ProquintResolver) resolveOnceAsync(ctx context.Context, name string, options opts.ResolveOpts) <-chan onceResult {
-	out := make(chan onceResult, 1)
-	defer close(out)
-
-	ok, err := proquint.IsProquint(name)
-	if err != nil || !ok {
-		out <- onceResult{err: errors.New("not a valid proquint string")}
-		return out
-	}
-	// Return a 0 TTL as caching this result is pointless.
-	out <- onceResult{value: path.FromString(string(proquint.Decode(name)))}
-	return out
-}