Pith Number

pith:I24D2XR6

pith:2011:I24D2XR6XL2YAREXAUCGMQV2UG

not attested not anchored not stored refs pending

A Lyman alpha halo around a quasar at redshift z=6.4

Chris J. Willott, Jacqueline Bergeron, John B. Hutchings, Savironi Chet

arxiv:1109.4110 v1 · 2011-09-19 · 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{I24D2XR6XL2YAREXAUCGMQV2UG}

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	2026-05-18T02:00:29.170628Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

46b83d5e3ebaf580449705046642baa19a0ecb34062e109c45b5e3563fb49222

Aliases

arxiv: 1109.4110 · arxiv_version: 1109.4110v1 · doi: 10.48550/arxiv.1109.4110 · pith_short_12: I24D2XR6XL2Y · pith_short_16: I24D2XR6XL2YAREX · pith_short_8: I24D2XR6

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/I24D2XR6XL2YAREXAUCGMQV2UG \
  | 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: 46b83d5e3ebaf580449705046642baa19a0ecb34062e109c45b5e3563fb49222

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "cb4e204944dd99460ac3ffa615190f6a856ef6b00f95fa587bc4f6ab31f5149e",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2011-09-19T18:00:20Z",
    "title_canon_sha256": "03d9b1a366f731375b71340085291e467b890e77a5ba625f3067984a49ad9add"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1109.4110",
    "kind": "arxiv",
    "version": 1
  }
}