Pith Number

pith:BQ2MC563

pith:2000:BQ2MC563TEIFZDWPCSGSAP6QEZ

not attested not anchored not stored refs pending

EROs in the EIS Fields. I: The AXAF (Chandra) Deep Field

2) D. Silva (1) ((1) European Southern Observatory, (2) Istituto di Fisica Cosmica "G. Occhialini"), M. Scodeggio (1

arxiv:astro-ph/0004228 v1 · 2000-04-17 · 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{BQ2MC563TEIFZDWPCSGSAP6QEZ}

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.

Cited by

1 paper in Pith

On The Very Bright Dropouts Selected Using the James Webb Space Telescope NIRCam Instrument

Receipt and verification

First computed	2026-07-04T14:10:17.881742Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0c34c177db99105c8ecf148d203fd0264a2dfa1e994cdf954bb2bfb1561d38a1

Aliases

arxiv: astro-ph/0004228 · arxiv_version: astro-ph/0004228v1 · doi: 10.48550/arxiv.astro-ph/0004228 · pith_short_12: BQ2MC563TEIF · pith_short_16: BQ2MC563TEIFZDWP · pith_short_8: BQ2MC563

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/BQ2MC563TEIFZDWPCSGSAP6QEZ \
  | 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: 0c34c177db99105c8ecf148d203fd0264a2dfa1e994cdf954bb2bfb1561d38a1

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "fc3ba4c4077a2bdaad9422db964a333a339914d17b867c1e06dfefaaf79cb4c5",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2000-04-17T13:27:30Z",
    "title_canon_sha256": "37e733b3ac97405b91070b3cd5a50c68d48e6644c81733f2e0947883fa3795ce"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0004228",
    "kind": "arxiv",
    "version": 1
  }
}