diff --git a/Library/.rubocop.yml b/Library/.rubocop.yml
index 33052d02a6..760b05c926 100644
--- a/Library/.rubocop.yml
+++ b/Library/.rubocop.yml
@@ -353,6 +353,7 @@ Layout/LineLength:
       ' name "',
       ' pkg "',
       ' pkgutil: "',
+      '    sha256 "',
       "#{language}",
       "#{version.",
       ' "/Library/Application Support/',
diff --git a/Library/Homebrew/dev-cmd/bottle.rb b/Library/Homebrew/dev-cmd/bottle.rb
index cd3f928829..03cae3a60d 100644
--- a/Library/Homebrew/dev-cmd/bottle.rb
+++ b/Library/Homebrew/dev-cmd/bottle.rb
@@ -20,19 +20,11 @@ BOTTLE_ERB = <<-EOS
             HOMEBREW_LINUX_DEFAULT_PREFIX].include?(prefix) %>
     prefix "<%= prefix %>"
     <% end %>
-    <% if cellar.is_a? Symbol %>
-    cellar :<%= cellar %>
-    <% elsif ![Homebrew::DEFAULT_MACOS_CELLAR,
-               Homebrew::DEFAULT_MACOS_ARM_CELLAR,
-               Homebrew::DEFAULT_LINUX_CELLAR].include?(cellar) %>
-    cellar "<%= cellar %>"
-    <% end %>
     <% if rebuild.positive? %>
     rebuild <%= rebuild %>
     <% end %>
-    <% checksums.each do |checksum_value| %>
-    <% checksum, macos = checksum_value.shift %>
-    sha256 "<%= checksum %>" => :<%= macos %>
+    <% sha256_lines.each do |line| %>
+    <%= line %>
     <% end %>
   end
 EOS
@@ -202,9 +194,29 @@ module Homebrew
     !absolute_symlinks_start_with_string.empty?
   end
 
+  def generate_sha256_line(tag, digest, cellar)
+    default_cellars = [
+      Homebrew::DEFAULT_MACOS_CELLAR,
+      Homebrew::DEFAULT_MACOS_ARM_CELLAR,
+      Homebrew::DEFAULT_LINUX_CELLAR,
+    ]
+    if cellar.is_a?(Symbol)
+      %Q(sha256 cellar: :#{cellar}, #{tag}: "#{digest}")
+    elsif cellar.present? && default_cellars.exclude?(cellar)
+      %Q(sha256 cellar: "#{cellar}", #{tag}: "#{digest}")
+    else
+      %Q(sha256 #{tag}: "#{digest}")
+    end
+  end
+
   def bottle_output(bottle)
+    sha256_lines = bottle.checksums.map do |checksum|
+      generate_sha256_line(checksum["tag"], checksum["digest"], checksum["cellar"])
+    end
+    erb_binding = bottle.instance_eval { binding }
+    erb_binding.local_variable_set(:sha256_lines, sha256_lines)
     erb = ERB.new BOTTLE_ERB
-    erb.result(bottle.instance_eval { binding }).gsub(/^\s*$\n/, "")
+    erb.result(erb_binding).gsub(/^\s*$\n/, "")
   end
 
   def sudo_purge
@@ -451,19 +463,14 @@ module Homebrew
 
   def merge_json_files(json_files)
     json_files.reduce({}) do |hash, json_file|
-      hash.deep_merge(json_file) do |key, first, second|
-        if key == "cellar"
-          # Prioritize HOMEBREW_CELLAR over :any over :any_skip_relocation
-          cellars = [first, second]
-          next HOMEBREW_CELLAR if cellars.include?(HOMEBREW_CELLAR)
-          next first if first.start_with?("/")
-          next second if second.start_with?("/")
-          next "any" if cellars.include?("any")
-          next "any_skip_relocation" if cellars.include?("any_skip_relocation")
+      json_file.each_value do |json_hash|
+        json_bottle = json_hash["bottle"]
+        cellar = json_bottle.delete("cellar")
+        json_bottle["tags"].each_value do |json_platform|
+          json_platform["cellar"] ||= cellar
         end
-
-        second
       end
+      hash.deep_merge(json_file)
     end
   end
 
@@ -476,13 +483,13 @@ module Homebrew
 
       bottle = BottleSpecification.new
       bottle.root_url bottle_hash["bottle"]["root_url"]
-      cellar = bottle_hash["bottle"]["cellar"]
-      cellar = cellar.to_sym if any_cellars.include?(cellar)
-      bottle.cellar cellar
       bottle.prefix bottle_hash["bottle"]["prefix"]
       bottle.rebuild bottle_hash["bottle"]["rebuild"]
       bottle_hash["bottle"]["tags"].each do |tag, tag_hash|
-        bottle.sha256 tag_hash["sha256"] => tag.to_sym
+        cellar = tag_hash["cellar"]
+        cellar = cellar.to_sym if any_cellars.include?(cellar)
+        sha256_hash = { cellar: cellar, tag.to_sym => tag_hash["sha256"] }
+        bottle.sha256 sha256_hash
       end
 
       if args.write?
@@ -533,16 +540,16 @@ module Homebrew
     new_values = {
       root_url: new_bottle_hash["root_url"],
       prefix:   new_bottle_hash["prefix"],
-      cellar:   new_bottle_hash["cellar"],
       rebuild:  new_bottle_hash["rebuild"],
     }
 
+    skip_keys = [:sha256, :cellar]
     old_keys.each do |key|
-      next if key == :sha256
+      next if skip_keys.include?(key)
 
       old_value = old_bottle_spec.send(key).to_s
       new_value = new_values[key].to_s
-      next if key == :cellar && old_value == "any" && new_value == "any_skip_relocation"
+
       next if old_value.present? && new_value == old_value
 
       mismatches << "#{key}: old: #{old_value.inspect}, new: #{new_value.inspect}"
@@ -551,12 +558,14 @@ module Homebrew
     return [mismatches, checksums] if old_keys.exclude? :sha256
 
     old_bottle_spec.collector.each_key do |tag|
-      old_value = old_bottle_spec.collector[tag][:checksum].hexdigest
+      old_checksum_hash = old_bottle_spec.collector[tag]
+      old_hexdigest = old_checksum_hash[:checksum].hexdigest
+      old_cellar = old_checksum_hash[:cellar]
       new_value = new_bottle_hash.dig("tags", tag.to_s)
       if new_value.present?
         mismatches << "sha256 => #{tag}"
       else
-        checksums << { old_value => tag }
+        checksums << { cellar: old_cellar, tag => old_hexdigest }
       end
     end
 
diff --git a/Library/Homebrew/software_spec.rb b/Library/Homebrew/software_spec.rb
index ccfdd942a8..0794e77814 100644
--- a/Library/Homebrew/software_spec.rb
+++ b/Library/Homebrew/software_spec.rb
@@ -442,8 +442,9 @@ class BottleSpecification
     end
     tags.reverse.map do |tag|
       {
-        collector[tag][:checksum] => tag,
-        cellar: collector[tag][:cellar],
+        "tag"    => tag,
+        "digest" => collector[tag][:checksum],
+        "cellar" => collector[tag][:cellar],
       }
     end
   end
diff --git a/Library/Homebrew/test/dev-cmd/bottle_spec.rb b/Library/Homebrew/test/dev-cmd/bottle_spec.rb
index 34d3bf8ccc..18360e753d 100644
--- a/Library/Homebrew/test/dev-cmd/bottle_spec.rb
+++ b/Library/Homebrew/test/dev-cmd/bottle_spec.rb
@@ -149,24 +149,26 @@ describe Homebrew do
     )
 
     hello_hash = bottles_hash["hello"]
-    expect(hello_hash["bottle"]["cellar"]).to eq("any_skip_relocation")
+    expect(hello_hash["bottle"]["tags"]["big_sur"]["cellar"]).to eq("any_skip_relocation")
     expect(hello_hash["bottle"]["tags"]["big_sur"]["filename"]).to eq("hello-1.0.big_sur.bottle.tar.gz")
     expect(hello_hash["bottle"]["tags"]["big_sur"]["local_filename"]).to eq("hello--1.0.big_sur.bottle.tar.gz")
     expect(hello_hash["bottle"]["tags"]["big_sur"]["sha256"]).to eq(
       "a0af7dcbb5c83f6f3f7ecd507c2d352c1a018f894d51ad241ce8492fa598010f",
     )
+    expect(hello_hash["bottle"]["tags"]["catalina"]["cellar"]).to eq("any_skip_relocation")
     expect(hello_hash["bottle"]["tags"]["catalina"]["filename"]).to eq("hello-1.0.catalina.bottle.tar.gz")
     expect(hello_hash["bottle"]["tags"]["catalina"]["local_filename"]).to eq("hello--1.0.catalina.bottle.tar.gz")
     expect(hello_hash["bottle"]["tags"]["catalina"]["sha256"]).to eq(
       "5334dd344986e46b2aa4f0471cac7b0914bd7de7cb890a34415771788d03f2ac",
     )
     unzip_hash = bottles_hash["unzip"]
-    expect(unzip_hash["bottle"]["cellar"]).to eq("any")
+    expect(unzip_hash["bottle"]["tags"]["big_sur"]["cellar"]).to eq("any_skip_relocation")
     expect(unzip_hash["bottle"]["tags"]["big_sur"]["filename"]).to eq("unzip-2.0.big_sur.bottle.tar.gz")
     expect(unzip_hash["bottle"]["tags"]["big_sur"]["local_filename"]).to eq("unzip--2.0.big_sur.bottle.tar.gz")
     expect(unzip_hash["bottle"]["tags"]["big_sur"]["sha256"]).to eq(
       "16cf230afdfcb6306c208d169549cf8773c831c8653d2c852315a048960d7e72",
     )
+    expect(unzip_hash["bottle"]["tags"]["catalina"]["cellar"]).to eq("any")
     expect(unzip_hash["bottle"]["tags"]["catalina"]["filename"]).to eq("unzip-2.0.catalina.bottle.tar.gz")
     expect(unzip_hash["bottle"]["tags"]["catalina"]["local_filename"]).to eq("unzip--2.0.catalina.bottle.tar.gz")
     expect(unzip_hash["bottle"]["tags"]["catalina"]["sha256"]).to eq(
@@ -202,16 +204,6 @@ describe Homebrew do
       ]
     end
 
-    it "checks for conflicting cellar" do
-      old_spec = BottleSpecification.new
-      old_spec.cellar("/opt/failbrew/Cellar")
-      new_hash = { "cellar" => "/opt/testbrew/Cellar" }
-      expect(homebrew.merge_bottle_spec([:cellar], old_spec, new_hash)).to eq [
-        ['cellar: old: "/opt/failbrew/Cellar", new: "/opt/testbrew/Cellar"'],
-        [],
-      ]
-    end
-
     it "checks for conflicting rebuild number" do
       old_spec = BottleSpecification.new
       old_spec.rebuild(1)
@@ -224,18 +216,54 @@ describe Homebrew do
 
     it "checks for conflicting checksums" do
       old_spec = BottleSpecification.new
-      old_spec.sha256("109c0cb581a7b5d84da36d84b221fb9dd0f8a927b3044d82611791c9907e202e" => :catalina)
-      old_spec.sha256("7571772bf7a0c9fe193e70e521318b53993bee6f351976c9b6e01e00d13d6c3f" => :mojave)
+      old_spec.sha256(catalina: "109c0cb581a7b5d84da36d84b221fb9dd0f8a927b3044d82611791c9907e202e")
+      old_spec.sha256(mojave: "7571772bf7a0c9fe193e70e521318b53993bee6f351976c9b6e01e00d13d6c3f")
       new_hash = { "tags" => { "catalina" => "ec6d7f08412468f28dee2be17ad8cd8b883b16b34329efcecce019b8c9736428" } }
+      expected_checksum_hash = { mojave: "7571772bf7a0c9fe193e70e521318b53993bee6f351976c9b6e01e00d13d6c3f" }
+      expected_checksum_hash[:cellar] = Homebrew::DEFAULT_CELLAR
       expect(homebrew.merge_bottle_spec([:sha256], old_spec, new_hash)).to eq [
         ["sha256 => catalina"],
-        [{ "7571772bf7a0c9fe193e70e521318b53993bee6f351976c9b6e01e00d13d6c3f" => :mojave }],
+        [expected_checksum_hash],
       ]
     end
   end
+
+  describe "::generate_sha256_line" do
+    it "generates a string without cellar" do
+      expect(homebrew.generate_sha256_line(:catalina, "deadbeef", nil)).to eq(
+        <<~RUBY.chomp,
+          sha256 catalina: "deadbeef"
+        RUBY
+      )
+    end
+
+    it "generates a string with cellar symbol" do
+      expect(homebrew.generate_sha256_line(:catalina, "deadbeef", :any)).to eq(
+        <<~RUBY.chomp,
+          sha256 cellar: :any, catalina: "deadbeef"
+        RUBY
+      )
+    end
+
+    it "generates a string with default cellar path" do
+      expect(homebrew.generate_sha256_line(:catalina, "deadbeef", Homebrew::DEFAULT_LINUX_CELLAR)).to eq(
+        <<~RUBY.chomp,
+          sha256 catalina: "deadbeef"
+        RUBY
+      )
+    end
+
+    it "generates a string with non-default cellar path" do
+      expect(homebrew.generate_sha256_line(:catalina, "deadbeef", "/home/test")).to eq(
+        <<~RUBY.chomp,
+          sha256 cellar: "/home/test", catalina: "deadbeef"
+        RUBY
+      )
+    end
+  end
 end
 
-describe "brew bottle --merge", :integration_test, :needs_linux do
+describe "brew bottle --merge", :integration_test do
   let(:core_tap) { CoreTap.new }
   let(:tarball) do
     if OS.linux?
@@ -292,9 +320,8 @@ describe "brew bottle --merge", :integration_test, :needs_linux do
       ==> testball
         bottle do
           root_url "#{HOMEBREW_BOTTLE_DEFAULT_DOMAIN}"
-          cellar :any_skip_relocation
-          sha256 "a0af7dcbb5c83f6f3f7ecd507c2d352c1a018f894d51ad241ce8492fa598010f" => :big_sur
-          sha256 "5334dd344986e46b2aa4f0471cac7b0914bd7de7cb890a34415771788d03f2ac" => :catalina
+          sha256 cellar: :any_skip_relocation, big_sur: "a0af7dcbb5c83f6f3f7ecd507c2d352c1a018f894d51ad241ce8492fa598010f"
+          sha256 cellar: :any_skip_relocation, catalina: "5334dd344986e46b2aa4f0471cac7b0914bd7de7cb890a34415771788d03f2ac"
         end
     EOS
 
@@ -307,9 +334,8 @@ describe "brew bottle --merge", :integration_test, :needs_linux do
 
         bottle do
           root_url "#{HOMEBREW_BOTTLE_DEFAULT_DOMAIN}"
-          cellar :any_skip_relocation
-          sha256 "a0af7dcbb5c83f6f3f7ecd507c2d352c1a018f894d51ad241ce8492fa598010f" => :big_sur
-          sha256 "5334dd344986e46b2aa4f0471cac7b0914bd7de7cb890a34415771788d03f2ac" => :catalina
+          sha256 cellar: :any_skip_relocation, big_sur: "a0af7dcbb5c83f6f3f7ecd507c2d352c1a018f894d51ad241ce8492fa598010f"
+          sha256 cellar: :any_skip_relocation, catalina: "5334dd344986e46b2aa4f0471cac7b0914bd7de7cb890a34415771788d03f2ac"
         end
 
         option "with-foo", "Build with foo"
@@ -339,8 +365,8 @@ describe "brew bottle --merge", :integration_test, :needs_linux do
         bottle do
           root_url "#{HOMEBREW_BOTTLE_DEFAULT_DOMAIN}"
           cellar :any_skip_relocation
-          sha256 "6b276491297d4052538bd2fd22d5129389f27d90a98f831987236a5b90511b98" => :big_sur
-          sha256 "16cf230afdfcb6306c208d169549cf8773c831c8653d2c852315a048960d7e72" => :catalina
+          sha256 big_sur: "6b276491297d4052538bd2fd22d5129389f27d90a98f831987236a5b90511b98"
+          sha256 catalina: "16cf230afdfcb6306c208d169549cf8773c831c8653d2c852315a048960d7e72"
         end
       EOS
       system "git", "add", "--all"
@@ -357,9 +383,8 @@ describe "brew bottle --merge", :integration_test, :needs_linux do
       ==> testball
         bottle do
           root_url "#{HOMEBREW_BOTTLE_DEFAULT_DOMAIN}"
-          cellar :any_skip_relocation
-          sha256 "a0af7dcbb5c83f6f3f7ecd507c2d352c1a018f894d51ad241ce8492fa598010f" => :big_sur
-          sha256 "5334dd344986e46b2aa4f0471cac7b0914bd7de7cb890a34415771788d03f2ac" => :catalina
+          sha256 cellar: :any_skip_relocation, big_sur: "a0af7dcbb5c83f6f3f7ecd507c2d352c1a018f894d51ad241ce8492fa598010f"
+          sha256 cellar: :any_skip_relocation, catalina: "5334dd344986e46b2aa4f0471cac7b0914bd7de7cb890a34415771788d03f2ac"
         end
     EOS
 
@@ -374,9 +399,8 @@ describe "brew bottle --merge", :integration_test, :needs_linux do
 
         bottle do
           root_url "#{HOMEBREW_BOTTLE_DEFAULT_DOMAIN}"
-          cellar :any_skip_relocation
-          sha256 "a0af7dcbb5c83f6f3f7ecd507c2d352c1a018f894d51ad241ce8492fa598010f" => :big_sur
-          sha256 "5334dd344986e46b2aa4f0471cac7b0914bd7de7cb890a34415771788d03f2ac" => :catalina
+          sha256 cellar: :any_skip_relocation, big_sur: "a0af7dcbb5c83f6f3f7ecd507c2d352c1a018f894d51ad241ce8492fa598010f"
+          sha256 cellar: :any_skip_relocation, catalina: "5334dd344986e46b2aa4f0471cac7b0914bd7de7cb890a34415771788d03f2ac"
         end
 
         def install
@@ -421,7 +445,7 @@ describe "brew bottle --merge", :integration_test, :needs_linux do
 
         bottle do
           root_url "#{HOMEBREW_BOTTLE_DEFAULT_DOMAIN}"
-          cellar :any_skip_relocation
+          cellar :any
           sha256 "6971b6eebf4c00eaaed72a1104a49be63861eabc95d679a0c84040398e320059" => :high_sierra
         end
       EOS
@@ -440,10 +464,9 @@ describe "brew bottle --merge", :integration_test, :needs_linux do
       ==> testball
         bottle do
           root_url "#{HOMEBREW_BOTTLE_DEFAULT_DOMAIN}"
-          cellar :any_skip_relocation
-          sha256 "a0af7dcbb5c83f6f3f7ecd507c2d352c1a018f894d51ad241ce8492fa598010f" => :big_sur
-          sha256 "5334dd344986e46b2aa4f0471cac7b0914bd7de7cb890a34415771788d03f2ac" => :catalina
-          sha256 "6971b6eebf4c00eaaed72a1104a49be63861eabc95d679a0c84040398e320059" => :high_sierra
+          sha256 cellar: :any_skip_relocation, big_sur: "a0af7dcbb5c83f6f3f7ecd507c2d352c1a018f894d51ad241ce8492fa598010f"
+          sha256 cellar: :any_skip_relocation, catalina: "5334dd344986e46b2aa4f0471cac7b0914bd7de7cb890a34415771788d03f2ac"
+          sha256 cellar: :any, high_sierra: "6971b6eebf4c00eaaed72a1104a49be63861eabc95d679a0c84040398e320059"
         end
     EOS
 
@@ -458,10 +481,9 @@ describe "brew bottle --merge", :integration_test, :needs_linux do
 
         bottle do
           root_url "#{HOMEBREW_BOTTLE_DEFAULT_DOMAIN}"
-          cellar :any_skip_relocation
-          sha256 "a0af7dcbb5c83f6f3f7ecd507c2d352c1a018f894d51ad241ce8492fa598010f" => :big_sur
-          sha256 "5334dd344986e46b2aa4f0471cac7b0914bd7de7cb890a34415771788d03f2ac" => :catalina
-          sha256 "6971b6eebf4c00eaaed72a1104a49be63861eabc95d679a0c84040398e320059" => :high_sierra
+          sha256 cellar: :any_skip_relocation, big_sur: "a0af7dcbb5c83f6f3f7ecd507c2d352c1a018f894d51ad241ce8492fa598010f"
+          sha256 cellar: :any_skip_relocation, catalina: "5334dd344986e46b2aa4f0471cac7b0914bd7de7cb890a34415771788d03f2ac"
+          sha256 cellar: :any, high_sierra: "6971b6eebf4c00eaaed72a1104a49be63861eabc95d679a0c84040398e320059"
         end
 
         def install