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 0xf4853b6d9e9420bf76cacd5d7c5766acec549df6fb42bf846c44b40e0b00637e. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d345908f-b00f-442a-8d96-76d9a880f019.json and https://artists.proofprofile.net/proofs/artist/d345908f-b00f-442a-8d96-76d9a880f019.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Het Hoeft Niet Altijd Zoveel Pijn Te Doen
Hommage Aan Edith Piaf: Milord / La vie en rose / Les mots d'amour / Non, je ne regrette rien
In Den Haag is een Laan (Maison Est En Ruine)
Waarom, Waarom, Waarom (Grande, Grande, Grande)
De Dametjes De Boer (Vingt Annees D'Existence)
Ik Laat Je Niet Meer Gaan (Shadows On The Sun)
Hij Was Pas Achtien (Il Venait D'Avoir Dix Huit Ans)
Waar Ben Je (Sorry Seems To Be The Hardest Word)
Ik Wist Het Toch Al Lang ( Everybody is Talking)
Mijn Eerste Liefde (First Episode at Hienton)
Dat Slepende Wijsje (Pucket Full Of Memories)
Lieve Schat (If I Ever Had To Say Goodbye)
Wat Een Uur Is Een Dag Is Een Jaar (je suis romantique)
Heerlijk Hollands - Het Allerbeste Van Conny Vandenbos
Hommage Aan Edith Piaf: Hymne a l'amour / Milord / La vie en rose / Les mots d'amour / Non je ne regrette rien
{"copyright_id":"0xc4c81d9d9a7165fea2b7ef9b5d2f69bb4bf9fb56a00660bfbc0f46d391073e51","isrc":"NLS241201591","name":"Sjakie Van De Hoek","registered_at":"2026-06-09T20:04:11Z","spotify_id":"2DJ2nCPR28QPWsFLmf28VE","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 0xc4c81d9d9a7165fea2b7ef9b5d2f69bb4bf9fb56a00660bfbc0f46d391073e51. 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/2DJ2nCPR28QPWsFLmf28VE.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/2DJ2nCPR28QPWsFLmf28VE.
{"copyright_id":"0xc4c81d9d9a7165fea2b7ef9b5d2f69bb4bf9fb56a00660bfbc0f46d391073e51","isrc":"NLS241201591","name":"Sjakie Van De Hoek","registered_at":"2026-06-09T20:04:11Z","spotify_id":"54iVf1BjflcI57HVqCk2ye","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4c81d9d9a7165fea2b7ef9b5d2f69bb4bf9fb56a00660bfbc0f46d391073e51. 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/54iVf1BjflcI57HVqCk2ye.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/54iVf1BjflcI57HVqCk2ye.
Liedjes van Toen - Grootste Hollandse Hits 1975-1976
Hollandse Sterren - Allermooiste Duetten