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 0x699b6b1ccab8f87a94109e224fb217d02f8160af3c094ad4eb01d26dc950c204. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/21d678bd-3faf-4616-9875-5004ceac3180.json and https://artists.proofprofile.net/proofs/artist/21d678bd-3faf-4616-9875-5004ceac3180.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Boven op de berg (Dwergenlied) - Radio Edit
Boven op de berg (Dwergenlied) - Karaoke Version
Er Zat Een Klein Zigeunermeisje (Linke Soep Remix)
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 0x89e2014da33cf93b7c3d39fdb045d8946b192aa8054a230c40e95101ebcb7861. 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/NLE871434703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24ec9f474ac59e24b637e5fb560a717bf557607d48e842cc44c8bc1abbf3737b. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/NLE871268101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54117570fb3174aaf8a3329ad58737c0193ddb6b10a7444db817b6bbaf01e174. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/NLE871291601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e1fdf26c11c4213cde2832977f60f6f96d38cbdce4be2de02d96666c1aa4f36. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/NLE871021304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcdc6ff45b88bc92f93a1e674d10308e0abc1928e0ecdb5974564c0ed88bd05b. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T02:03:46Z), 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/NLE871434704.
Er Zat Een Klein Zigeunermeisje - Linke Soep Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00396f5b07cd0950a494b396f4145a48c3ab5ee5009123e60ec86cba559014cc. Chain 2 (Bitcoin): anchored in block 957671 (2026-07-12T07:35:31Z), 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/NLE871538201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6eb550ee7c89e61aeca145b820c0f369985ade2562a911ac4dd0b7a74e13a4e2. 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/NLE871623401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbfcbf7250dcaeab869bccb2dab5396ba0e8ca5f5417d64ab9f8c181e455971f. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/NLE870811402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06d33387ad2518e88d405d9f2307127fbfae5b9a2c9c84d9cd16a2967267e84e. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/NLE870811417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23acf0a3cc3ec7d5fe2710d938291d2458d32656dac230ea8798a96a0ccaa469. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/NLE871259532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3fe704213bb08e9309833bb05dde86849edc813a0a10e84b45b1a34df918cc3. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/NLE872200301.