Pith Number

pith:R7JTBGKY

pith:2004:R7JTBGKYGI62STUY6FJDFQRKMZ

not attested not anchored not stored refs pending

Submillimetre Observations of z>6 Quasars

(2) Imperial College London, 3), (3) University of Hertfordshire, (4) University of Wales, (5) IoA, Cambridge), Cardiff, Edinburgh, Hatfield, Ian Robson (1), Kate Isaak (4), Richard McMahon (5) ((1) UK ATC, Robert Priddey (2

arxiv:astro-ph/0405177 v1 · 2004-05-10 · 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{R7JTBGKYGI62STUY6FJDFQRKMZ}

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	2026-07-04T16:43:43.975934Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8fd3309958323da94e98f15232c22a666bca2dc12e0c7a9110fb54f4cc89c219

Aliases

arxiv: astro-ph/0405177 · arxiv_version: astro-ph/0405177v1 · doi: 10.48550/arxiv.astro-ph/0405177 · pith_short_12: R7JTBGKYGI62 · pith_short_16: R7JTBGKYGI62STUY · pith_short_8: R7JTBGKY

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/R7JTBGKYGI62STUY6FJDFQRKMZ \
  | 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: 8fd3309958323da94e98f15232c22a666bca2dc12e0c7a9110fb54f4cc89c219

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "146a26888f01ee40cf730826583b86d3e9b5a8536000be3ed70c6c16c84ca45f",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2004-05-10T09:17:32Z",
    "title_canon_sha256": "0508e269995cce5256f7674f6870522a9cb61cb24a8f4277f69957ea803ea844"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0405177",
    "kind": "arxiv",
    "version": 1
  }
}