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 0x062aed7461824941d2bc8fb791dadc96bca38763ed244cfe3c2d4ddca07dc653. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/648e15ab-4ec4-4106-8e35-c74ed5d42afc.json and https://artists.proofprofile.net/proofs/artist/648e15ab-4ec4-4106-8e35-c74ed5d42afc.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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 → block OTSBitcoinBlock must exist at that height 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 0x0296150ed5d4c3e441c23ab184c301bb64acfd97491de123221f6138949eec1a. 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/ES8620901620.
Hij Komt, Hij Komt, Die Lieve Goede Sint
Sinterklaasje Kom Maar Binnen Met Je Knecht
Ik Vraag Aan Sinterklaas Een Heel Gelukkig Kerstfeest
Ring Ring, Ring Gaan De Bellen Van De Slee
Tune Telekids, Pittige Tijden, Er Komt Visite, De Movie Race, Nog 3, 2, 1 minuten
Ernst, Bobbie & De Rest, Je Bent Een Soepkip, Wij Zijn Zo Bang, De Truibreiboogie
Dikkertje Dap, Meester Van Zoeten, De Kippetjes Van De Koning, Een Sprinkhaan Op Urk
Waanzinnig Gedroomd, Op Een Onbewoon Eiland, Meidengroep, Ha, Ha Je Vader, Als Ik De Baas Zou Zijn Van Het Journaal
Twips, Mijn Opa, De Kat Van Ome Willem, Bello
Potige Smurf, 1, 2, 3, 4, De Smurfen zijn hier, Lopen, Lopen, Lopen, De Tovenaar Is Carcamel, Smurfen Zijn Nooit Echt Ziek, We Zijn Smurfen
Paulus De Boskabouter, Kabouter, Hé Ho Sowieso
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b591519ef44814f8232d67c1e83828e3c392abc1cc1afa2fafbe9038d4dcaa3. Chain 2 (Bitcoin): anchored in block 957892 (2026-07-13T18:21:16Z), 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/NLS241500678.
Bananas in Pyjamas (Theme) - piano version
How Much Is That Doggy In The Window - piano version
Head, Shoulders, Knees and Toes - piano version
Alfred Jodocus Kwak (Intro) - Piano Version
Rubber Ducky (Sesame Street) - Piano Version
Elmos World Opening Theme - Piano Version
The Best Day Ever (Spongebob Squarepants) - Piano Version
If I Knew You Were Comin’ I’d’ve Baked a Cake (Sesam Street) - Piano Version
Spongebob Squarepants Theme - Piano Version
Lucky Luke (Bang-Bang Lucky Luke) - Piano Version
Spongebob Squarepants Theme - Marimba Version
Arthur (Opening Theme) - Marimba Version
Alfred Jodocus Kwak (Intro) - Marimba Version
Elmos World (Opening Theme) - Marimba Version
The Best Day Ever (Spongebob Squarepants) - Marimba Version
Thomas the Tank Engine - Marimba Version
If I Knew You Were Comin’ I’d’ve Baked a Cake (Sesame Street) - Marimba Version
Lucky Luke (Bang-Bang Lucky Luke) - Marimba Version
Rubber Ducky (Sesame Street) - Marimba Version