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 10/14/2026 at 09:32 PM, included in the fingerprint of 10/14/2026.

Pick: #1014181Paid
Tipster: Magnus (@Magnus)
Selection: Hidden: this is an unsettled paid pick. The fingerprint stores its hash; it can be checked once it settles.
Fingerprint of 10/14/2026: 1daa96e9 0868f35c b70e1a67 78436946 34ec3234 68ad6d4c 1c388e06 e17cd0db
Pick leaf: 50832c6f 8113ad35 5012848d cab5300e 4102cba0 88179d45 ed257d9a be013a36Position 556 of 642
Bitcoin seal: Sent to OpenTimestamps on 10/15/2026, 12:18 AM; Bitcoin confirmation takes a few hours. Download the .ots

Inclusion proof (9 steps)

1. left fe12a2fcc7c74640353a3e48cd3d4b966dd653861513c64a4c1ca6c5911485c2
2. left d07aa8f57721aa4ab2b7bcb029189d80ca02f7da8a894823e40f52ce3ae41d07
3. right 7a3c5ddb0d2cb8f11ff4deab76b2207dc9ec485ddad7a53e17424e0c41055745
4. left 8011913a6569f23891f953ad9e52ce48c49b6309fd27c7470f58a4563d1856dd
5. right c135094a76c5e6692416b082052b22cff034df64def9ddc69537da83de0818d4
6. left 46ad116af4a2e0b3c9db7779c583874f2f3b5d9a9e3b5bc8bca1328c2ef49323
7. right f4a76743b2f9860326276940fe7e8c409edb70da46754fac93b0e9360293fec0
8. right e96f9c7cbb2a5ced9b237c90741cc74d9db43a1c68d0825e8ee29667b79ce06f
9. left b0fd5b7f0ca87c7340c60cfe88f54942015d0e58437d86120dce63a5b975a45c

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.