1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed1cf478b0ab50e609a6e10f0bf3881e5b2076a68eaf488781e3c636ba518d47. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/55da0db7-fc5d-43db-baac-a097f93a2176.json and https://artists.proofprofile.net/proofs/artist/55da0db7-fc5d-43db-baac-a097f93a2176.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Vader Abraham En Zijn Zeven Schoondochters
Jij En Ik Blijven Bestaan / In Een Klas Met Kleine Kleuters
Baaie, Baaie, Pootje Baaien / Vader Abraham En Zijn Zeven Schoondochters
Vader Abraham Had Zeven Zonen / Haal Je Toeters En Je Piepers
Je Hoeft Elkaar Niet Te Zien Om Gelukkig Te Zijn
Kinderogen / Je Hoeft Elkaar Niet Te Zien Om Gelukkig Te Zijn
In Naam Van Oranje We Hebben De Cup / Hup Oranje / Ze Zijn Toch Om Te Zoenen
Maar In M'n Tuin Daar Bloeit Een Roos / Die Ene Herinnering
Hoera Retteketet (Een Hoeraatje Voor Het Kabinet)
Ich hab' mein Herz in Heidelberg verlören
Im weissen Rössl an Wolfgangsee / Mein Liebeslied müss ein Waltzer sein / Ja das alles auf Ehr
Bedankt Lieve Ouders / 't Kleine Café Aan De Haven
Niet Elke Oester Heeft Een Parel / We Waren Het Bijna Vergeten
Als Je Wilt Weten Wie Ik Ben / Nooit Meer Klagen, Nooit Meer Vragen
Das Lied der Schlümpfe / Zauberflötenschlümpfe
Thuis (Waar je Ook Bent, Wat Je Ook Doet)
Medley: Zomertijd / De Clown / Ik Heb Vandaag De Zon Besteld / Bedankt Lieve Mieke, Bedankt Vader Abraham
Schlümpfes Boogie Woogie Show (Teil 1& 2) (Live)
Baaien, Baaien, Pootje Baaien / Wie Holt Van Mekaar / Als De Klok Van Arnemuiden / Twee Ogen Zo Blauw (Live)
Vader Abraham Had Zeven Zonen / Smurfenlied (Live)
Je hoeft elkaar niet te zien om gelukkig te zijn
We blijven altijd optimisten - Meezing Versie
{"copyright_id":"0xe64da2766b23b6835e5d7b75540d7b696abf941fe6e57f3af68f097ff70aef89","isrc":"NLE320500081","name":"Daar In Het Kleine Café Aan De Haven","registered_at":"2026-06-07T09:03:16Z","spotify_id":"2dW1VuKn4dgZLRnzifVRlQ","type":"track"}
1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. GET OTSBitcoinBlockVerifyURL → block OTSBitcoinBlock must exist at that height 3. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 4. GET OTSVerificationAPI → pre-computed 6-check result from server 5. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe64da2766b23b6835e5d7b75540d7b696abf941fe6e57f3af68f097ff70aef89. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/2dW1VuKn4dgZLRnzifVRlQ.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/2dW1VuKn4dgZLRnzifVRlQ.
Ik Breng Geen Bloemen Voor Je Mee, Maar Wel De Rekening Voor Het Café
Heerlijk Hollands - Het Allerbeste van Vader Abraham
De Gouden Carnaval Toppers van Vader Abraham
Vandaag zal heel de wereld even anders zijn
Ja ja ik voel het al het is weer carnaval
{"copyright_id":"0x4ee738fdf37aab5bce61957fb10d7cd5d7a756f455fb4604e8a115b7bc1c3bd8","isrc":"NLE320500074","name":"Zou Het Erg Zijn Lieve Opa","registered_at":"2026-06-18T12:00:53Z","spotify_id":"2Eo4AIN6ccFluxtxyXW50Q","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ee738fdf37aab5bce61957fb10d7cd5d7a756f455fb4604e8a115b7bc1c3bd8. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/2Eo4AIN6ccFluxtxyXW50Q.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/2Eo4AIN6ccFluxtxyXW50Q.
Alle 20 Goed - Voetbal Knallers Van Toen
{"copyright_id":"0xe64da2766b23b6835e5d7b75540d7b696abf941fe6e57f3af68f097ff70aef89","isrc":"NLE320500081","name":"'t Kleine Cafe Aan De Haven","registered_at":"2026-06-07T09:03:16Z","spotify_id":"636ffWbDOuVhP5vxs8o6e7","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe64da2766b23b6835e5d7b75540d7b696abf941fe6e57f3af68f097ff70aef89. Chain 2 (Bitcoin): anchored in block 957026 (2026-07-07T11:02:43Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/636ffWbDOuVhP5vxs8o6e7.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/636ffWbDOuVhP5vxs8o6e7.
{"copyright_id":"0x4ee738fdf37aab5bce61957fb10d7cd5d7a756f455fb4604e8a115b7bc1c3bd8","isrc":"NLE320500074","name":"Zou Het Erg Zijn Lieve Opa","registered_at":"2026-06-18T12:00:53Z","spotify_id":"2ZyiOqzeENK9rk9PLzKeoa","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ee738fdf37aab5bce61957fb10d7cd5d7a756f455fb4604e8a115b7bc1c3bd8. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/2ZyiOqzeENK9rk9PLzKeoa.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/2ZyiOqzeENK9rk9PLzKeoa.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fdbff634c5ee4e46296fa7943f52747e7dcc52b654bc872305714f9f0218103. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/4Tfnt9FNoRMspPYGauVF3e.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/4Tfnt9FNoRMspPYGauVF3e.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54c558005c0c2e24e445599edfb11a78530227e6f3431fb90cb53072105e1b2a. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/2p4Ur7PsBFSbiYbVKiIaJ0.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/2p4Ur7PsBFSbiYbVKiIaJ0.
{"copyright_id":"0xe64da2766b23b6835e5d7b75540d7b696abf941fe6e57f3af68f097ff70aef89","isrc":"NLE320500081","name":"'t Kleine Cafe Aan De Haven","registered_at":"2026-06-07T09:03:16Z","spotify_id":"71tT0MnuNuUcVCfKiPRCdi","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe64da2766b23b6835e5d7b75540d7b696abf941fe6e57f3af68f097ff70aef89. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/71tT0MnuNuUcVCfKiPRCdi.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/71tT0MnuNuUcVCfKiPRCdi.
{"copyright_id":"0x4ee738fdf37aab5bce61957fb10d7cd5d7a756f455fb4604e8a115b7bc1c3bd8","isrc":"NLE320500074","name":"Zou Het Erg Zijn Lieve Opa","registered_at":"2026-06-18T12:00:53Z","spotify_id":"4dRzFuBW2SBgBFj7IZLHz4","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ee738fdf37aab5bce61957fb10d7cd5d7a756f455fb4604e8a115b7bc1c3bd8. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/4dRzFuBW2SBgBFj7IZLHz4.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/4dRzFuBW2SBgBFj7IZLHz4.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fdbff634c5ee4e46296fa7943f52747e7dcc52b654bc872305714f9f0218103. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/3iSpBCcFZ977TFUsQ2K8Ip.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/3iSpBCcFZ977TFUsQ2K8Ip.
Liedjes van Toen - Grootste Hollandse Hits 1975-1976