<html lang="en">
<head>
<meta charset="utf-8">
+ <meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1">
<style type="text/css">
body {
margin:40px auto;
bitcoinheaders.net currently supports fetching of either full Bitcoin headers or neutrino filter headers, both with a similar format. To ensure reliable access in the face of strict DNS filters, the data is encoded in IPv6 addresses in AAAA records and DNSSec signed to prevent some basic attacks.
</p>
<p>
- All headers and filter headers are encoded with an arbitrary two byte prefix (currently "2001:"), followed by a 0-indexed order nibble (as nameservers often reorder responses). Bitcoin headers are then prefixed by a single 0 byte (two 0 nibbles) and placed into the remaining 80 bytes of six IPv6 addresses. Filter headers are simply placed into three IPv6 addresses with a 17-nibble (8.5 byte) 0 suffix.
+ Headers names are broken into sub-zones of 10,000 records, so queries should take the form of height.(height / 10000).bitcoinheaders.net (or, for basic neutrino filter headers, height.(height / 10000).basic.filter.bitcoinheaders.net).
+ </p>
+ <p>
+ All headers and filter headers are encoded with an arbitrary two byte prefix (currently "2001:"), followed by a 0-indexed order nibble (as nameservers often reorder responses). Bitcoin headers are then prefixed by a single version byte (currently version 0 - two 0 nibbles) and placed into the remaining 80 bytes of six IPv6 addresses. Filter headers are simply placed into three IPv6 addresses with a 17-nibble (8.5 byte) 0 suffix.
</p>
<p>
The genesis block header is, thus, encoded as (note that the responses are usually not sorted):
<p class="hex">
0100000000000000000000000000000000000000000000000000000000000000000000003ba3edfd7a7b12b27ac72c3e67768f617fc81bc3888a51323a9fb8aa4b1e5e4a29ab5f49ffff001d1dac2b7c
</p>
- <p>and the first filter header encoded as:</p>
+ <p>and the 10,000th filter header encoded as:</p>
<pre>
-0.0.basic.filter.bitcoinheaders.net. 604800 IN AAAA 2001:9f3:c30f:c37:fb97:7cf3:e1a3:173c
-0.0.basic.filter.bitcoinheaders.net. 604800 IN AAAA 2001:2802:139c:2020::
-0.0.basic.filter.bitcoinheaders.net. 604800 IN AAAA 2001:1631:e8ff:119a:d308:8b6f:5b2b:ced0</pre>
+10000.1.basic.filter.bitcoinheaders.net. 604800 IN AAAA 2001:65e:9154:fba5:5883:1fa0:4738:3262
+10000.1.basic.filter.bitcoinheaders.net. 604800 IN AAAA 2001:1dee:3a70:76df:a4aa:5ee9:5285:5cdf
+10000.1.basic.filter.bitcoinheaders.net. 604800 IN AAAA 2001:225c:f460:3730::</pre>
<p>which decodes to</p>
<p class="hex">
- 9f3c30f0c37fb977cf3e1a3173c631e8ff119ad3088b6f5b2bced0802139c202
+ 65e9154fba558831fa047383262dee3a7076dfa4aa5ee952855cdf25cf460373
+ </p>
+ <p>
+ You can find the <a href="https://git.bitcoin.ninja?p=headersdns">scripts used to generate the zones as well as this website via git.</a>
</p>
<p>
- You can find the <a href="https://github.com/TheBlueMatt/headersdns">scripts used to generate the zones as well as this website on GitHub.</a>
+ If you want a full block source over a protocol other than Bitcoin-P2P, a anycast-cached Bitcoin Core REST interface endpoint is available at <a href="https://bitcoin-rest.bitcoin.ninja/">https://bitcoin-rest.bitcoin.ninja/</a> for mainnet and <a href="https://testnet.bitcoin-rest.bitcoin.ninja/">https://testnet.bitcoin-rest.bitcoin.ninja/</a> for testnet3. It should go without saying that this should only be used as a backup chain source, never as the primary chain source.
</p>
</body>
</html>
projects / headersdns / blobdiff