Check a pick's record

Every day at 00:15 (Madrid time) we record every pick published the day before in a fingerprint: a hash tree whose root is sealed in Bitcoin with OpenTimestamps. Anyone can check that a pick existed that day with that content, and whether it was changed or deleted later.

Recorded and unchanged

Recorded on 10/16/2026 at 10:04 PM, included in the fingerprint of 10/16/2026.

Pick: #1015315
Tipster: Underdog Tips (@UnderdogTips)
Event: Leganés vs Córdoba
Selection: Córdoba empate no valid · @1.72 · stake 1
Fingerprint of 10/16/2026: a10498f0 44f13ced 74c61e6f e714404e abb5bffa d17170cf 3e01b819 7591e6e5
Pick leaf: 33489654 fadfb39a df9c4cb7 fce82828 b04637f7 ca2d6015 dc07ec23 4324779fPosition 521 of 585
Bitcoin seal: Anchored in Bitcoin block 971775. Download the .ots

Inclusion proof (8 steps)

1. right a74b78889132ba09e8a9dbf3e0a8cfc7400dc868dc583561aa1a5a82d6b85320
2. right b2a147a34b7d86ec04cd0badb2e5ab22384a80b34099ea86a27f34d64ff46a7d
3. right d9f6922cdcd07fc644e5991fc14d7460cecdc365520d7bb5cd336b18a98d499d
4. left 1a677f75bb0ecdf5cb359e6d1801fc7c679216b966745604b6ce789ee218627c
5. right 279ede1ae3a9f1781cc9fb5403c536263ad6f01377a9991cc5d07ca01d763f9e
6. right 0cd712d28cb0d1ca9bb259fbbccc8a3e48bb6aa10d1af1e73ba3bd60696a6840
7. right 4acdf1ff79bd98e15064be338591fcafa32a3673445045c71b642fbbf655b8c0
8. left 2e280c2039af2eb917af6c2876b513c26d2a485e41a82eaddc21fab88bfa98ed

Recorded content:

["tipsterland-huella-pick",1,1015315,24121,"2026-10-16T20:04:19Z","Leganés vs Córdoba","2026-10-16T20:04:19Z","Córdoba empate no valid","1.72","1"]

How to check without trusting us: the leaf is SHA-256(0x00 + content) and each step SHA-256(0x01 + left + right). If the path reaches the root and the .ots verifies with the official OpenTimestamps client (ots verify), the pick was recorded that day. This proves when it was published and that it wasn't touched; it says nothing about whether the pick is good.