1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 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 0x6a246096b6e7d3dee194819d323385e91097641da17403231200a52ae9ee0708. Chain 2 (Bitcoin): anchored in block 953605 (2026-06-14T07:39:50Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/10e27f5b-0c77-4609-ab8c-6d3676d2d4ed.json and https://artists.proofprofile.net/proofs/artist/10e27f5b-0c77-4609-ab8c-6d3676d2d4ed.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Ik hou van het leven! | Vrolijke kinderliedjes!
Samen met jou! | Vrolijke kinderliedjes!
Zie ginds komt de stoomboot! | Sinterklaasliedjes!
Wie komt er alle jaren? | Sinterklaasliedjes! Kinderliedjes!
Sinterklaas kapoentje! | Sinterklaasliedjes! Kinderliedjes!
Sinterklaasje bonne bonne bonne! | Sinterklaasliedjes! Kinderliedjes!
Daar wordt aan de deur geklopt! | Sinterklaasliedjes! Kinderliedjes!
Sinterklaasje kom maar binnen met je Piet! | Sinterklaasliedjes! Kinderliedjes!
Hoofd schouders knie en teen! | Kinderliedjes!
Hoor wie klopt daar kinderen? | Sinterklaasliedjes! Kinderliedjes!
O kom er eens kijken! | Sinterklaasliedjes! Kinderliedjes!
Hoedje van papier! | Kinderliedjes, vrolijke liedjes!
De wielen van de bus! | Kinderliedjes! Vrolijke liedjes!
Rommel de bommel! | Sinterklaasliedjes! Vrolijke liedjes!
Zie de maan schijnt door de bomen! | Sinterklaasliedjes! Kinderliedjes!
Zachtjes gaan de paardenvoetjes! | Sinterklaasliedjes! Kinderliedjes!
Op een grote paddestoel! | Kinderliedjes!
Sint Maarten de koeien hebben staarten! | Kinderliedjes!
Slaap kindje slaap! | Nederlandse kinderliedjes!
Papegaaitje leef je nog? | Nederlandse kinderliedjes!
In Holland staat een huis! | Nederlandse kinderliedjes!
Poesje mauw! Hondje waf! | Kinderliedjes!
Morgen krijg ik een konijntje! | Kinderliedjes!
Hoor de wind waait door de bomen! | Sinterklaasliedjes! Kinderliedjes!
Piet ging uit fietsen! | Sinterklaasliedjes! Kinderliedjes!
Sinterklaas kapoentje, gooi wat in mijn schoentje! Sinterklaasliedjes! Kinderliedjes!
Hop, hop, hop! | Sinterklaasliedjes Kinderliedjes
Het moppenlied één! | Kinderliedjes en moppen!
De zak van Sinterklaas! | Sinterklaasliedjes! Kinderliedjes!
Hij komt, hij komt! | Sinterklaasliedjes! Kinderliedjes!
Zingen met kinderen! | Sinterklaas kapoentje! Sinterklaasliedjes!
Zingen met kinderen! | Zie ginds komt de stoomboot! Sinterklaasliedjes!
Sinterklaas Goedheiligman! | Sinterklaasliedjes! Kinderliedjes!
Sint en Piet gaan cadeautjes kopen! | Sinterklaasliedjes! Kinderliedjes!
Zingen met kinderen! | Sinterklaasje bonne, bonne, bonne! Sinterklaasliedjes!
Vet coole Sinterklaas! Sinterklaasliedjes! Kinderliedjes!
Jongens heb je het al vernomen! | Sinterklaasliedjes! Kinderliedjes!
Lang zal die leven! | Kinderliedjes! Verjaardagsliedjes!
Piet is de weg kwijt! | Sinterklaasliedjes! Kinderliedjes!
Zingen met kinderen! Dag Sinterklaasje! | Sinterklaasliedjes!
Het stoute kind! | Sinterklaasliedjes! Kinderliedjes!
Het gekke ananas lied! | Grappige liedjes! Kinderliedjes!
De kop van de kat is jarig! | Kinderliedjes! Verjaardagsliedjes!
Buurman banaan! | Grappige liedjes! Kinderliedjes!
Mevrouwtje Mango en Meneertje Peer! | Grappige liedjes! Kinderliedjes!
Papa Paprika! | Grappige liedjes! Kinderliedjes!
Pippi Langkous! | Kinderliedjes! Grappige liedjes!
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6b880d4418d50dbe05711275db7c8f261c57a8dfbdce6f70b761c0c6085dfa7. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZWFJ2313294.
Oma is knettergek! | Grappige liedjes! Kinderliedjes!
De Mosselman! | Grappige liedjes! Kinderliedjes!
Paardje in de wei! | Grappige liedjes! Kinderliedjes!
Het eekhoorn lied! | Grappige liedjes! Kinderliedjes!
Wanda de Panda! | Grappige liedjes! Kinderliedjes!
Lief Dolfijntje! Slaapliedjes! | Kinderliedjes!
Jingle Bells! | Elves singing Christmas Songs | Kerstliedjes
We wish you a merry Christmas! | Elves singing Christmas songs! | Kerstliedjes!
Sneeuwpop maken! | Kerstliedjes! Kinderliedjes!
Kerstboom versieren! | Kerstliedjes! Kinderliedjes!
Het allermooiste kinderfeestje! Verjaardagsliedjes! | Kinderliedjes!
ZigZag! | Vrolijke kinderliedjes en muziek!
De Superheld! | Kinderliedjes en muziek!
Je bent jarig, hiep hoera! | Verjaardagsliedjes!
Een vrolijk dansje! | Leuke kinderliedjes!
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf61bbbf4d75803f6f9713f83870171f2d324e408d708493f590bceed803eac1c. Chain 2 (Bitcoin): anchored in block 958554 (2026-07-18T13:17:01Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZES52517380.
De lieve paashaas! | Kinderliedjes pasen!
Het Super Kunstkot Kattenfeest! | Kinderliedjes!
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecd133dd28202ee40f5b6a3f87a2786065c83a6bf2d1b02522712f8fa68c8ecb. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZES62575011.
Twee egeltjes bij ons in de tuin! | Kinderliedjes!
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27a90bc22373cfb1d3a969a52db77844c87d4e7f2819939570372c60c4788269. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZES62578750.
De Paashaas is z’n eitjes kwijt! | Kinderliedjes Pasen
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5e378060f99dae700161f839ac39321c947f6a843f26ca0727c9091b5183281. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZES72555580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55fc2beb8414b4e7707afa9d839d834624f8438cccc818378a8e753151c4d87c. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZES72555581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a87da02962b500cc669cbc1b88c44ef14c60eb8453c3dca50d638a637f988c9. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZES72556234.
Kinderliedjes: Kikker wilde graag een vogel zijn!
Kinderliedjes: De vissen in onze vijver!
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f04b6370f303bf1a961c32b4556c71275163d2cd3534a8f89ecc30b865f6a4d. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZES72556314.
Kinderliedjes: Kom bij onze Boomhutclub!
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6262c61475bb2b926e7c1a5597189da848b5bfeab7656ec8b94f68712be07bb. Chain 2 (Bitcoin): anchored in block 958689 (2026-07-19T07:11:11Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZES82523840.
Berend Botje ging uit varen! | Minidisco Dans Kinderliedjes!
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x287d53de0ae9d0dc347a4d367b2fce3891fb855cc6090c8d28cef91bba918aea. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZES92535663.
Capibara gaat op reis! | Luisterboek Kinderliedjes
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b43d889c7158bf0455ce2d9105b862b863c4ca72fa756ddc9200929e9589ad0. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZES92532189.
Kinderliedjes: Een spannende film kijken!
Hoofd schouders knie en teen! | Alien Kinderliedjes!
Kinderliedjes: Pieter Kat wil mens zijn!
Capibara buikje aaien! | Grappige kinderliedjes!
Ik zag twee beren broodje smeren! | Kinderliedjes!
Het is voorjaarsvakantie! | Kinderliedjes!
Oma is jarig! | Verjaardagsliedjes Kinderliedjes
De Capibara Stopdans! | Minidisco Dans Kinderliedjes!
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa73613e9d311c775527d93b14aa8e8e9a87105673da27b3540cdd2d9daf6174b. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZHN42509571.
Luisterboek Kinderen: De Kleine Kangoeroe Die Niet Kon Springen!
Kinderliedjes: De eerste vlinder van het jaar!
Dabadie Dabadaa! | Danslied Kinderliedjes
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91841c848e32dfedc8bfdc2f804ea64fbeaca1a427d145957138b985eeec9649. Chain 2 (Bitcoin): anchored in block 958721 (2026-07-19T11:02:33Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZHN72536049.
Verstoppertje doen! | Peuterliedjes Kleuterliedjes
Het zonnetje schijnt! | Peuterliedjes Kleuterliedjes
Kinderliedjes: Ga mee in de Luchtballon!
Een liedje voor alle jarige opa's! | Verjaardagsliedjes!
Op de schommel! | Peuterliedjes, Kleuterliedjes
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x340eaa7deec6540cb0563405abb4c709e879ca815e5e84540c58a7b798f5622f. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZHN92561677.
Dierengeluiden op de boerderij! | Kinderliedjes
Op de glijbaan! | Peuterliedjes, Kleuterliedjes
Dierengeluiden op de Savanne! | Kinderliedjes
Bekkie, de kleine krokodil! | Kinderliedjes
Pippi Langkous Stopdans! | Kinderliedjes
Verjaardagsstopdans! | Lang zal ze leven!
Mijn Super Kunstkot Kinderfeest! | Kinderliedjes
Bouwen met mijn blokjes! | Kinderliedjes
Stopdans: Hoofd, schouders, knie en teen!
De Liedjes Show! Aflevering 1: Naomi, Tess en Max
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43e6ff2bc8faf1e01055994c3ea9cbb3f11596dbcced860ef2c073f94b6b77e2. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZK6Q2511425.
Vandaag gaan we picknicken! | Kinderliedjes
De Liedjes Show! | Aflevering 2: Lynn, Mees en Sam
Mijn voeten dansen vanzelf! | Kinderliedjes
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd212a50aa28826ba36ff1aa49782a374c3dcb10a0cf9f44dc44cb31b5cfb6db8. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZK6Q2579476.
Begin de dag met een dansje! | Kinderliedjes
Als ik de baas zou zijn! | Kinderliedjes
De Liedjeshoek: Twee emmertjes water halen!
De Liedjeshoek: Boer wat zeg je van mijn kippen!
Raad het geluid! Aflevering 1 | Kinderliedjes
Een luiaard op een fiets! | Kinderliedjes
Samen naar de markt met mama! | Kinderliedjes
Puppy op een skateboard! | Kinderliedjes
Olifant op de trampolien! | Kinderliedjes
Konijn in de speelgoedwinkel! | Kinderliedjes
De zingende muis met gitaar! | Kinderliedjes
Er zit een monster onder mijn bed! | Kinderliedjes
Banaan op het strand! | Grappige liedjes
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf123ea121c7425c6759646c92a4a1b8749c99b21c7dae8fe3c919ef5b2c5c41. Chain 2 (Bitcoin): anchored in block 958582 (2026-07-18T16:47:25Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZMEP2571115.
Alle eendjes zwemmen in het water! | Kinderliedjes leren
De Koning zingt Koningsdaglied | Koningsspelen lied
Altijd is Kortjakje ziek | Oudhollandse kinderliedjes
Twinkel twinkel kleine ster | Slaapliedjes
Klap eens in je handjes! | Kinderliedjes