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 11/02/2026 at 10:16 PM, included in the fingerprint of 11/02/2026.

Pick: #1025360
Tipster: Underdog Tips (@UnderdogTips)
Event: Mallorca - Cadiz
Selection: Empate o Mallorca · @1.5 · stake 2
Fingerprint of 11/02/2026: c17d7784 ab8a1686 83707fc8 fe25ef6b cb24f4df 38d48563 871c7fb8 04cef3de
Pick leaf: 4621a964 9c217664 952a1b8e 3d7ce232 0aa445d3 2c83a9ba 8ce3d76d 14b1821cPosition 395 of 433
Bitcoin seal: Anchored in Bitcoin block 974314. Download the .ots

Inclusion proof (8 steps)

1. right 3570608574c85b75afd30c8124820b707aedc3dcc271d3c706724365d044ddba
2. left 25c4eb369eb4822a34e062cef593ebc191a8f6499b03603274f98643ac589740
3. right dc3806c85c1110482e36ded3eeb155883d4ff5859d4b1312878decc6d43b0307
4. left 3b000436a82b2a8782bf12a3276f01fad9331fb0a29a3ac6dd9c9dbc67b7acf8
5. right f615785e5330f4573fe2c4383480855b9f06c762a9dba654485c8e6a8f7805c9
6. right 352b12b675f00a95727fbc85005ca5dd1c04ec2ed7a16d1a4cfec4789cdacf71
7. left 6440f289c4debdf6188cd1c07929beea116d2b56ff41c7363a8cd32008390a63
8. left cfc4389e80f629082bbdf136ab154122814babbb6839b26ce39ef43f4c8ad67a

Recorded content:

["tipsterland-huella-pick",1,1025360,24121,"2026-11-02T21:16:22Z","Mallorca - Cadiz","2026-11-02T21:16:22Z","Empate o Mallorca","1.5","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.