RoughTime

This host runs a RoughTime synchronization server implementing Revision 15 (0x8000000c) of the IETF protocol. RoughTime provides cryptographically verifiable time without requiring a trusted network path.

New to RoughTime? Read our announcement: Why We Built a New RoughTime Implementation

We operate this server for community benefit. It is intended for synchronization, timestamping, and testing. Please use it responsibly.

Server Information

Address	roughtime.sturdystatistics.com
Port	2002
Protocol	UDP
Public Key	NqIjwLopQn6yQChtE21Mb97dAbAPe5UOuTa0tOakgD8=

Verify this key via DNS:
dig -t TXT roughtime.sturdystatistics.com

Quick Start

You can query this server immediately using our command-line client

clj -M:run :server-name "SturdyStatistics"

Tip: For verifiable time, query at least three independent servers and verify the response chain. Cloudflare maintains a public ecosystem list here.

What is RoughTime?

RoughTime is a secure time service. Servers sign batches of client requests, chaining them with Merkle trees. Each response proves the server’s notion of time and prevents undetected backdating/forward-dating across requests.

Live Example Results

Sturdy StatisticsCloudflareint08hroughtime.seTXRyan

skew	0
expires in	2d 3h

Request Message

{"VER" "0x8000000c",
 "SRV"
 ["4a4344b8 ed36a263 cae105a2 92fe2661"
  "d964691d be07548f 43b5b523 2671f3ab"],
 "NONC"
 ["30a79eda 0de0d2ea a7188d15 ea4ec35d"
  "9fc2a7ca 55933d0f 8a631dec fd66ce2d"],
 "TYPE" 0,
 "ZZZZ" "0{912}"}

Response Message

{"SIG"
 ["1d966ddb c576a2dd 7ab3af20 59be092b"
  "ddd25c64 223580b1 b3fd3dbc ceb96e7d"
  "12376a50 137de3d0 2aee3bcd fafc310a"
  "d6d7175b b0be78ed bbfa98cb c1d5a901"],
 "NONC"
 ["30a79eda 0de0d2ea a7188d15 ea4ec35d"
  "9fc2a7ca 55933d0f 8a631dec fd66ce2d"],
 "TYPE" 1,
 "PATH" [],
 "SREP"
 {"VER" "0x8000000c",
  "RADI" 10,
  "MIDP" 1775535429,
  "VERS"
  ("0"
   "0x80000001"
   "0x80000002"
   "0x80000003"
   "0x80000004"
   "0x80000006"
   "0x80000008"
   "0x80000009"
   "0x8000000a"
   "0x8000000b"
   "0x8000000c"),
  "ROOT"
  ["de8133ca c41e8986 2d03140c a918616c"
   "72f06f75 f66d1556 37919703 3548d353"]},
 "CERT"
 {"SIG"
  ["628b09c0 171bc9ae 4a704cba 618adfff"
   "cbbbc3cf 960905d5 04dbf43d c3ae7ad6"
   "3f7f07db 9370cc23 6a8e934e 35aaa8cb"
   "7ff0f042 b23bfcb2 7e3d47a9 aa3fa809"],
  "DELE"
  {"PUBK"
   ["e12601ef 39d45314 b64678a1 a8efbbd5"
    "960ff59b adc64bae 8e6313f9 3b4f5762"],
   "MINT" 1775030400,
   "MAXT" 1775721600}},
 "INDX" 0}

skew	0
expires in	7h 33m

Request Message

{"VER" "0x8000000b",
 "SRV"
 ["0d93616f 19641cbf 68f8b41a 1b659797"
  "fc9330b6 58a5042d 6be10211 94ee290c"],
 "NONC"
 ["b0d575ff edfab6dc 888418a1 33b12bdb"
  "cb9a9675 e9a772c7 285cbd5a b215d3ca"],
 "ZZZZ" "0{912}"}

Response Message

{"SIG"
 ["8675641c 5ecede2b 1a4f1475 829c6df7"
  "32490e7e 2e1fbf18 b6fdd1d7 bbed8416"
  "d82a7785 fab6f056 8d149af7 487c8733"
  "7d8a1a45 0b582b30 2d3efe3b 23c58102"],
 "VER" "0x8000000b",
 "PATH" [],
 "SREP"
 {"RADI" 1,
  "MIDP" 1775535429,
  "ROOT"
  ["05ce9fc2 0a437833 d95e8e1b 44201b8d"
   "0b664d99 24365838 0bc97988 45337c1f"]},
 "CERT"
 {"SIG"
  ["e67ae8bb 01100629 814acf8c eb2520f8"
   "083d74f0 5bd5b1e4 dc03b6fa f4f5da9a"
   "f11b1d27 1d33436e f139f168 3c9922ce"
   "31c6f4d8 c5ccb25b 623e80b7 3d2a330e"],
  "DELE"
  {"PUBK"
   ["81229e78 5b94b4bb 3138beef 0e491629"
    "3a60f2b2 6e57eb93 ce7fd9a7 66a9ae15"],
   "MINT" 1775476230,
   "MAXT" 1775562630}},
 "INDX" 0}

skew	0
expires in	∞

Request Message

{"VER" "0x8000000c",
 "SRV"
 ["95645ff5 c385c24e ba48d509 528a4a74"
  "e0861c0b 57f46c25 ee5c6a48 8a23246f"],
 "NONC"
 ["4a7fc88e e4644b9f 95968687 b79c0bea"
  "5a5ce457 a76f5ec5 d77ad082 14c43643"],
 "TYPE" 0,
 "ZZZZ" "0{912}"}

Response Message

{"SIG"
 ["a184fb0a 4371999b f265680a 5208bee2"
  "3bef6139 3c014896 bd06082e 1c9fd2fd"
  "188ca557 eca7e19a 13e33453 cf219092"
  "9566c120 d7de6261 dc055105 7fc11800"],
 "NONC"
 ["4a7fc88e e4644b9f 95968687 b79c0bea"
  "5a5ce457 a76f5ec5 d77ad082 14c43643"],
 "TYPE" 1,
 "PATH" [],
 "SREP"
 {"VER" "0x8000000c",
  "RADI" 5,
  "MIDP" 1775535429,
  "VERS" ("0" "0x8000000c"),
  "ROOT"
  ["4c2ff5a6 c02c6b80 c1db47c3 b4fe271a"
   "a4f82eb8 a032eca7 9d9b4996 52e081f3"]},
 "CERT"
 {"SIG"
  ["24ec1900 45666e89 c0283478 f413d194"
   "41e0b395 c4d7ad81 354e8b55 7d907efd"
   "d843b942 779a8cdf a4e82ef1 b6bab7fa"
   "f242f079 c8901201 638264a5 1b9ac207"],
  "DELE"
  {"PUBK"
   ["b9045bea 9dccd4ba 0c34181f 5cf69943"
    "00d49b3b 86115595 18e01bbe 66f9c583"],
   "MINT" 0,
   "MAXT" 18446744073709551615}},
 "INDX" 0}

skew	0
expires in	9mo 25d

Request Message

{"VER" "0x8000000c",
 "SRV"
 ["8c4bbf59 8f43ff13 da82bfeb 9e0652a4"
  "e372ab03 c2cae3b6 f661ea29 c8ebacc2"],
 "NONC"
 ["8c3984f0 4bfb1ab4 a2ded6e1 ec223cf2"
  "d23b0958 6cb45895 c81db704 b63d4e58"],
 "TYPE" 0,
 "ZZZZ" "0{912}"}

Response Message

{"SIG"
 ["2894eeb0 c2f04a3c 22c1c6ec 83ed95d0"
  "2718f6a0 b2cdfca8 faf5c47a c4f25d8e"
  "d39e3e69 0ea455bf ce62bdd4 4ad06304"
  "3bb839f2 02deae0d d45ef0cf 8ae90108"],
 "NONC"
 ["8c3984f0 4bfb1ab4 a2ded6e1 ec223cf2"
  "d23b0958 6cb45895 c81db704 b63d4e58"],
 "TYPE" 1,
 "PATH" [],
 "SREP"
 {"VER" "0x8000000c",
  "RADI" 1,
  "MIDP" 1775535429,
  "VERS" ("0x8000000c"),
  "ROOT"
  ["dcb511a6 93de476c c57dc94d bd009a3b"
   "26bf702e bf2c0303 ae70ef06 21aba890"]},
 "CERT"
 {"SIG"
  ["3a20f9a3 e7ad50b0 636f3819 61266ab0"
   "283e493a 5f118dd3 f7f47524 fe3b3b24"
   "4ed5653f 333061c8 0bfd7836 82607698"
   "ab5ab5f9 3d8ccff2 bfb600ec 4a4e610e"],
  "DELE"
  {"PUBK"
   ["14c0ff4f a3aa7597 7c4f14b0 0b974646"
    "fb241196 92f35bf2 4d496cf7 119a50a4"],
   "MINT" 1768694400,
   "MAXT" 1801440000}},
 "INDX" 0}

Error: No UDP response received

{:server
 {:name "time.txryan.com",
  :version "Google-Roughtime",
  :version-no 0,
  :supported-versions nil,
  :msg-size 1024,
  :public-key-type "ed25519",
  :public-key "iBVjxg/1j7y1+kQUTBYdTabxCppesU/07D4PMDJk2WA=",
  :addresses [{:protocol "udp", :address "127.0.0.1:2015"}]},
 :attempts 3,
 :timeout-ms 1000}