diff --git a/README.md b/README.md
index 02c664d..64782ea 100644
--- a/README.md
+++ b/README.md
@@ -258,43 +258,6 @@ sub.on('event', async event => {
 })
 ```
 
-### Performing and checking for delegation
-
-```js
-import { nip26, getPublicKey, generatePrivateKey } from 'nostr-tools'
-
-// delegator
-let sk1 = generatePrivateKey()
-let pk1 = getPublicKey(sk1)
-
-// delegatee
-let sk2 = generatePrivateKey()
-let pk2 = getPublicKey(sk2)
-
-// generate delegation
-let delegation = nip26.createDelegation(sk1, {
-  pubkey: pk2,
-  kind: 1,
-  since: Math.round(Date.now() / 1000),
-  until: Math.round(Date.now() / 1000) + 60 * 60 * 24 * 30 /* 30 days */,
-})
-
-// the delegatee uses the delegation when building an event
-let event = {
-  pubkey: pk2,
-  kind: 1,
-  created_at: Math.round(Date.now() / 1000),
-  content: 'hello from a delegated key',
-  tags: [['delegation', delegation.from, delegation.cond, delegation.sig]],
-}
-
-// finally any receiver of this event can check for the presence of a valid delegation tag
-let delegator = nip26.getDelegator(event)
-assert(delegator === pk1) // will be null if there is no delegation tag or if it is invalid
-```
-
-Please consult the tests or [the source code](https://github.com/fiatjaf/nostr-tools) for more information that isn't available here.
-
 ### Using from the browser (if you don't want to use a bundler)
 
 ```html
diff --git a/index.ts b/index.ts
index 1380332..73c1c40 100644
--- a/index.ts
+++ b/index.ts
@@ -13,7 +13,6 @@ export * as nip18 from './nip18.ts'
 export * as nip19 from './nip19.ts'
 export * as nip21 from './nip21.ts'
 export * as nip25 from './nip25.ts'
-export * as nip26 from './nip26.ts'
 export * as nip27 from './nip27.ts'
 export * as nip28 from './nip28.ts'
 export * as nip39 from './nip39.ts'
diff --git a/nip26.test.ts b/nip26.test.ts
deleted file mode 100644
index 9bc7020..0000000
--- a/nip26.test.ts
+++ /dev/null
@@ -1,101 +0,0 @@
-import { getPublicKey, generatePrivateKey } from './keys.ts'
-import { getDelegator, createDelegation } from './nip26.ts'
-import { buildEvent } from './test-helpers.ts'
-
-test('parse good delegation from NIP', async () => {
-  expect(
-    getDelegator({
-      id: 'a080fd288b60ac2225ff2e2d815291bd730911e583e177302cc949a15dc2b2dc',
-      pubkey: '62903b1ff41559daf9ee98ef1ae67cc52f301bb5ce26d14baba3052f649c3f49',
-      created_at: 1660896109,
-      kind: 1,
-      tags: [
-        [
-          'delegation',
-          '86f0689bd48dcd19c67a19d994f938ee34f251d8c39976290955ff585f2db42e',
-          'kind=1&created_at>1640995200',
-          'c33c88ba78ec3c760e49db591ac5f7b129e3887c8af7729795e85a0588007e5ac89b46549232d8f918eefd73e726cb450135314bfda419c030d0b6affe401ec1',
-        ],
-      ],
-      content: 'Hello world',
-      sig: 'cd4a3cd20dc61dcbc98324de561a07fd23b3d9702115920c0814b5fb822cc5b7c5bcdaf3fa326d24ed50c5b9c8214d66c75bae34e3a84c25e4d122afccb66eb6',
-    }),
-  ).toEqual('86f0689bd48dcd19c67a19d994f938ee34f251d8c39976290955ff585f2db42e')
-})
-
-test('parse bad delegations', async () => {
-  expect(
-    getDelegator({
-      id: 'a080fd288b60ac2225ff2e2d815291bd730911e583e177302cc949a15dc2b2dc',
-      pubkey: '62903b1ff41559daf9ee98ef1ae67cc52f301bb5ce26d14baba3052f649c3f49',
-      created_at: 1660896109,
-      kind: 1,
-      tags: [
-        [
-          'delegation',
-          '86f0689bd48dcd19c67a19d994f938ee34f251d8c39976290955ff585f2db42f',
-          'kind=1&created_at>1640995200',
-          'c33c88ba78ec3c760e49db591ac5f7b129e3887c8af7729795e85a0588007e5ac89b46549232d8f918eefd73e726cb450135314bfda419c030d0b6affe401ec1',
-        ],
-      ],
-      content: 'Hello world',
-      sig: 'cd4a3cd20dc61dcbc98324de561a07fd23b3d9702115920c0814b5fb822cc5b7c5bcdaf3fa326d24ed50c5b9c8214d66c75bae34e3a84c25e4d122afccb66eb6',
-    }),
-  ).toEqual(null)
-
-  expect(
-    getDelegator({
-      id: 'a080fd288b60ac2225ff2e2d815291bd730911e583e177302cc949a15dc2b2dc',
-      pubkey: '62903b1ff41559daf9ee98ef1ae67cc52f301bb5ce26d14baba3052f649c3f49',
-      created_at: 1660896109,
-      kind: 1,
-      tags: [
-        [
-          'delegation',
-          '86f0689bd48dcd19c67a19d994f938ee34f251d8c39976290955ff585f2db42e',
-          'kind=1&created_at>1740995200',
-          'c33c88ba78ec3c760e49db591ac5f7b129e3887c8af7729795e85a0588007e5ac89b46549232d8f918eefd73e726cb450135314bfda419c030d0b6affe401ec1',
-        ],
-      ],
-      content: 'Hello world',
-      sig: 'cd4a3cd20dc61dcbc98324de561a07fd23b3d9702115920c0814b5fb822cc5b7c5bcdaf3fa326d24ed50c5b9c8214d66c75bae34e3a84c25e4d122afccb66eb6',
-    }),
-  ).toEqual(null)
-
-  expect(
-    getDelegator({
-      id: 'a080fd288b60ac2225ff2e2d815291bd730911e583e177302cc949a15dc2b2dc',
-      pubkey: '62903b1ff41559daf9ee98ef1ae67c152f301bb5ce26d14baba3052f649c3f49',
-      created_at: 1660896109,
-      kind: 1,
-      tags: [
-        [
-          'delegation',
-          '86f0689bd48dcd19c67a19d994f938ee34f251d8c39976290955ff585f2db42e',
-          'kind=1&created_at>1640995200',
-          'c33c88ba78ec3c760e49db591ac5f7b129e3887c8af7729795e85a0588007e5ac89b46549232d8f918eefd73e726cb450135314bfda419c030d0b6affe401ec1',
-        ],
-      ],
-      content: 'Hello world',
-      sig: 'cd4a3cd20dc61dcbc98324de561a07fd23b3d9702115920c0814b5fb822cc5b7c5bcdaf3fa326d24ed50c5b9c8214d66c75bae34e3a84c25e4d122afccb66eb6',
-    }),
-  ).toEqual(null)
-})
-
-test('create and verify delegation', async () => {
-  let sk1 = generatePrivateKey()
-  let pk1 = getPublicKey(sk1)
-  let sk2 = generatePrivateKey()
-  let pk2 = getPublicKey(sk2)
-  let delegation = createDelegation(sk1, { pubkey: pk2, kind: 1 })
-  expect(delegation).toHaveProperty('from', pk1)
-  expect(delegation).toHaveProperty('to', pk2)
-  expect(delegation).toHaveProperty('cond', 'kind=1')
-
-  let event = buildEvent({
-    kind: 1,
-    tags: [['delegation', delegation.from, delegation.cond, delegation.sig]],
-    pubkey: pk2,
-  })
-  expect(getDelegator(event)).toEqual(pk1)
-})
diff --git a/nip26.ts b/nip26.ts
deleted file mode 100644
index 4ba46db..0000000
--- a/nip26.ts
+++ /dev/null
@@ -1,71 +0,0 @@
-import { schnorr } from '@noble/curves/secp256k1'
-import { bytesToHex } from '@noble/hashes/utils'
-import { sha256 } from '@noble/hashes/sha256'
-
-import { utf8Encoder } from './utils.ts'
-import { getPublicKey } from './keys.ts'
-
-import type { Event } from './event.ts'
-
-export type Parameters = {
-  pubkey: string // the key to whom the delegation will be given
-  kind?: number
-  until?: number // delegation will only be valid until this date
-  since?: number // delegation will be valid from this date on
-}
-
-export type Delegation = {
-  from: string // the pubkey who signed the delegation
-  to: string // the pubkey that is allowed to use the delegation
-  cond: string // the string of conditions as they should be included in the event tag
-  sig: string
-}
-
-export function createDelegation(privateKey: string, parameters: Parameters): Delegation {
-  let conditions = []
-  if ((parameters.kind || -1) >= 0) conditions.push(`kind=${parameters.kind}`)
-  if (parameters.until) conditions.push(`created_at<${parameters.until}`)
-  if (parameters.since) conditions.push(`created_at>${parameters.since}`)
-  let cond = conditions.join('&')
-
-  if (cond === '') throw new Error('refusing to create a delegation without any conditions')
-
-  let sighash = sha256(utf8Encoder.encode(`nostr:delegation:${parameters.pubkey}:${cond}`))
-
-  let sig = bytesToHex(schnorr.sign(sighash, privateKey))
-
-  return {
-    from: getPublicKey(privateKey),
-    to: parameters.pubkey,
-    cond,
-    sig,
-  }
-}
-
-export function getDelegator(event: Event<number>): string | null {
-  // find delegation tag
-  let tag = event.tags.find(tag => tag[0] === 'delegation' && tag.length >= 4)
-  if (!tag) return null
-
-  let pubkey = tag[1]
-  let cond = tag[2]
-  let sig = tag[3]
-
-  // check conditions
-  let conditions = cond.split('&')
-  for (let i = 0; i < conditions.length; i++) {
-    let [key, operator, value] = conditions[i].split(/\b/)
-
-    // the supported conditions are just 'kind' and 'created_at' for now
-    if (key === 'kind' && operator === '=' && event.kind === parseInt(value)) continue
-    else if (key === 'created_at' && operator === '<' && event.created_at < parseInt(value)) continue
-    else if (key === 'created_at' && operator === '>' && event.created_at > parseInt(value)) continue
-    else return null // invalid condition
-  }
-
-  // check signature
-  let sighash = sha256(utf8Encoder.encode(`nostr:delegation:${event.pubkey}:${cond}`))
-  if (!schnorr.verify(sig, sighash, pubkey)) return null
-
-  return pubkey
-}
diff --git a/package.json b/package.json
index f3130ea..1d01a11 100644
--- a/package.json
+++ b/package.json
@@ -94,11 +94,6 @@
       "require": "./lib/cjs/nip25.js",
       "types": "./lib/types/nip25.d.ts"
     },
-    "./nip26": {
-      "import": "./lib/esm/nip26.js",
-      "require": "./lib/cjs/nip26.js",
-      "types": "./lib/types/nip26.d.ts"
-    },
     "./nip27": {
       "import": "./lib/esm/nip27.js",
       "require": "./lib/cjs/nip27.js",