Pith Number

pith:CTTUTXAY

pith:2017:CTTUTXAY2W3MGYGH2UO4DUBGCO

not attested not anchored not stored refs pending

Observations of the Lyman series forest towards the redshift 7.1 quasar ULAS J1120+0641

B. P. Venemans, C. Simpson, D. J. Mortlock, G. D. Becker, P. C. Hewett, R. Barnett, R. G. McMahon, S. J. Warren

arxiv:1702.03687 v1 · 2017-02-13 · astro-ph.CO · astro-ph.GA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{CTTUTXAY2W3MGYGH2UO4DUBGCO}

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	2026-05-18T00:50:51.597204Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

14e749dc18d5b6c360c7d51dc1d026139bd79b6284a968c6e1d3b5c34b28c790

Aliases

arxiv: 1702.03687 · arxiv_version: 1702.03687v1 · doi: 10.48550/arxiv.1702.03687 · pith_short_12: CTTUTXAY2W3M · pith_short_16: CTTUTXAY2W3MGYGH · pith_short_8: CTTUTXAY

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/CTTUTXAY2W3MGYGH2UO4DUBGCO \
  | 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: 14e749dc18d5b6c360c7d51dc1d026139bd79b6284a968c6e1d3b5c34b28c790

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e317fa3179bcd4fb0f309f021644c34293f8ee029ca70f90df2b5f3616eec790",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2017-02-13T09:47:44Z",
    "title_canon_sha256": "d0bae1854b4caa572ac8756abe9a0dc16caecff9c17c7bef06a38004482aca63"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1702.03687",
    "kind": "arxiv",
    "version": 1
  }
}