Pith Number

pith:WSC3D6R7

pith:2008:WSC3D6R7HJ3SZ3K4QKLKGIGJNW

not attested not anchored not stored refs pending

Discovery of a redshift 6.13 quasar in the UKIRT Infrared Deep Sky Survey

(2) University of Cambridge, (3) Liverpool John Moores University, (4) Anglo-Australian Observatory, (5) University of Hertfordshire, (6) Cardiff University, (7) University of Sydney, (8) European Space Astronomy Centre), B. Burningham (5), B. P. Venemans (2), C. Simpson (3), D. J. Mortlock (1), E. A. Gonzales-Solares (2), M. Patel (1), N. Huelamo (8) ((1) Imperial College London, P. C. Hewett (2), R. G. McMahon (2), R. G. Sharp (4), S. Dye (6) S. Ellis (7), S. J. Warren (1)

arxiv:0810.4180 v4 · 2008-10-22 · astro-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{WSC3D6R7HJ3SZ3K4QKLKGIGJNW}

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	2026-05-18T02:15:23.568186Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b485b1fa3f3a772ced5c8296a320c96d8df3ac7e0b8c771060d851664dfa2d00

Aliases

arxiv: 0810.4180 · arxiv_version: 0810.4180v4 · doi: 10.48550/arxiv.0810.4180 · pith_short_12: WSC3D6R7HJ3S · pith_short_16: WSC3D6R7HJ3SZ3K4 · pith_short_8: WSC3D6R7

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/WSC3D6R7HJ3SZ3K4QKLKGIGJNW \
  | 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: b485b1fa3f3a772ced5c8296a320c96d8df3ac7e0b8c771060d851664dfa2d00

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7305d5d480511b370f4b67270bd5c0adb9df4ba199780cdf238fbf1d5bce3f20",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph",
    "submitted_at": "2008-10-22T23:39:16Z",
    "title_canon_sha256": "16b58a06a88dfc0d25b1ac196df974ea7dd2459f694db0adbde2cee77caaee32"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0810.4180",
    "kind": "arxiv",
    "version": 4
  }
}