Pith Number

pith:TXN54R56

pith:2010:TXN54R56HUCFJQQ3HUR74YJQ72

not attested not anchored not stored refs pending

A first direct measurement of the intergalactic medium temperature around a quasar at z=6

George D. Becker (IoA/KICC), James S. Bolton (Melbourne), J. Stuart B. Wyithe (Melbourne), Martin G. Haehnelt (IoA/KICC), Wallace L.W. Sargent (Caltech)

arxiv:1001.3415 v2 · 2010-01-19 · astro-ph.CO

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{TXN54R56HUCFJQQ3HUR74YJQ72}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more · Embed verified badge

Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Receipt and verification

First computed	2026-05-18T02:09:32.307624Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9ddbde47be3d0454c21b3d23fe6130fea75ee065304ffb8ac9a42ef5caa3931c

Aliases

arxiv: 1001.3415 · arxiv_version: 1001.3415v2 · doi: 10.48550/arxiv.1001.3415 · pith_short_12: TXN54R56HUCF · pith_short_16: TXN54R56HUCFJQQ3 · pith_short_8: TXN54R56

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/TXN54R56HUCFJQQ3HUR74YJQ72 \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: 9ddbde47be3d0454c21b3d23fe6130fea75ee065304ffb8ac9a42ef5caa3931c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e2ff952f68ea25c8682515b1ca1a04e4b5a3cf3d9260768e1df2ba52b46548c9",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2010-01-19T21:17:22Z",
    "title_canon_sha256": "f330d90e5c3197396a29fb50ec69dc8cd6984a6815a18a134a4676b050ca7902"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1001.3415",
    "kind": "arxiv",
    "version": 2
  }
}