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 10/19/2026 at 09:53 PM, included in the fingerprint of 10/19/2026.

Pick: #1017390
Tipster: Underdog Tips (@UnderdogTips)
Event: PSG vs Barça
Selection: +4,5 remates a puerta Barcelona · @1.61 · stake 2
Fingerprint of 10/19/2026: 8f52464c c60bc515 726ce1f2 0d1f31d1 6054e493 3ad1de21 f6f29d7b c9f4684e
Pick leaf: 76e6b5b9 1922b145 b0a656c1 c8601bda 95f069e0 4bd97d48 011538e1 1bab5948Position 574 of 626
Bitcoin seal: Anchored in Bitcoin block 972220. Download the .ots

Inclusion proof (8 steps)

1. left 5dd0c4c12f84092c0622038f39df28be20efff9e429a6e3725b2d2064ffc6434
2. right c00fb18f49333094e50a0575ceae5cde900a93e0587e247d713c343a08e03abe
3. left 9637182f3ce0fe1fd559266603a9568652a55dc8961b6eb2affb9e5b7300152e
4. left 7de8de896640ead12450fbf6a8da667b55841d56ef7384dcd3dd7a849eff8477
5. left caa3744e16fea12667a0c7a1103cc90315ae6935719a480d75e819287657e70d
6. left 783099787732002b4fb6fa0b10829726d006565c1b2173f33883bce48a9a42cb
7. right 9a49162797a4e2753c94f66a0bd043abcb8f1d16be64365d0e316e73b193bdb1
8. left 4782a298c39a0162f06cfcd0d8609ce78e0f1140ba4ce015eea9d0ef528b16e5

Recorded content:

["tipsterland-huella-pick",1,1017390,24121,"2026-10-19T19:53:15Z","PSG vs Barça","2026-10-20T19:00:00Z","+4,5 remates a puerta Barcelona","1.61","2"]

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.