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 0x755a89f294f94cae386d01868638c142cf23acf79b47b3e73af4fb443409bd6a. 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/abfce80e-3ef3-43cd-a3a5-3350ba4ab6c3.json and https://artists.proofprofile.net/proofs/artist/abfce80e-3ef3-43cd-a3a5-3350ba4ab6c3.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Rustige Piano Slaapliedjes voor Baby's en Dreumesen
18 Rustige Piano Slaapliedjes voor Baby's en Dreumesen
20 Peaceful Piano Lullabies for Baby Sleep
20 Rustige Piano Slaapliedjes voor Baby's en Dreumesen
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 0x536e2d8159ae7f20c6649f7cbc7c665dbf32451c36ed402cb9b82b0f86fd9ad5. Chain 2 (Bitcoin): anchored in block 957805 (2026-07-13T04:34:37Z), 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/NL7RF2300008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67a09370f5cbcf2b41bfd2a8ccf37583b9cc1e04756c8e97b7a208445ee8bc1c. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/NL7RF2300009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0759e0ff33b522a7cff74122a14be0efc8f285e6aaef310ea11685895667a7a3. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/NL7RF2300007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0a7fca2f80c0ab02f2be6ca0a36025afe3450c33c9eae74d3551b5eef8b5e6f. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/NL7RF2300006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3710ce86e4098d1519f23f946ec4e011de0bb225f0d31a3e7a36861dea25a868. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/NL7RF2300013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8f89f0a098920b60ebf1596a4a9907df450329e08bd696e035071cce8658785. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/NL7RF2300015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89a947724fbfc6043369cd1a15f4fcf86ab48d5f59c1fb569e3ebe3ad3ebc153. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/NL7RF2300010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa217690b3d65496dbd90b81349fa9a75b5381ad839201b84f7f068f8b726a137. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/NL7RF2300019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x913dcb6036a5ab3934a745901775a6b97e2f05d364d087e1be9757db65d20a83. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/NL7RF2300017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa25295dea5ae40082fe75c38efe2a1a55b10903fa55938c56c7649aea638939b. Chain 2 (Bitcoin): anchored in block 958185 (2026-07-15T18:19:04Z), 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/NL7RF2300011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x504e0875c147cf6a92d68eb7c97139b3eedc1f93570a896a3b905078a41c076c. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:07:29Z), 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/NL7RF2300014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ee3725f256999192455681670bb56789cac846138432d5985c8f989d6a8935f. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/NL7RF2300020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01bded4e8e6b835e88a1710807a7ff93c18ad91abf33b5d5f0324191984304ff. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T09:47:57Z), 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/NL7RF2300021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea88bf8d72ed17690a9f598eacfde838fbea7b39f149e495eb3739dc3ff4fd72. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/NL7RF2300110.
20 Canciones De Cuna Para Bebes En Piano
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad4b3687f6bba4d620fd898b70458164a6d37efea983923b380c213e90573acf. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:22:04Z), 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/NL7RF2300169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f5998839a55027df303094d9b2e1f6854a15513635f46974ae3ae47c56c2257. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T07:53:57Z), 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/NL7RF2300173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10f08c529267abb0f7542b75546cca48545e295f0441610de2256fe8117ddb10. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/NL7RF2300177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fb206187d7b45f2e3d13369bd484f7b6eb525563cf8342193deb6d303d8c838. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/NL7RF2300179.
My Bonnie Lies Over The Ocean - Piano Instrumental
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc62f93b6572b770525dbda79edeb5feb9404b411a5f7c5dff250c8b9c991a164. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/NL7RF2300146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x918466fdb1cd84329a4ec8ae74f02899f3465be48c294d0fa48af34a22c8f28d. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T09:31:41Z), 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/NL7RF2300147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b1e06c18cfc05ea71ead737b0f5d9e6178dcae81ce1b0c2312a5abeff7d3c21. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/NL7RF2300148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1474caf8662a06e71ca357a1e34dfeadbe131dcf6a05d7ce8a748c3d4689b587. Chain 2 (Bitcoin): anchored in block 958703 (2026-07-19T08:36:12Z), 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/NL7RF2300149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e851d4acf733ad63c0a8bd2a968da9bb4ef82d684c11d4b16f1879689d2c2ef. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/NL7RF2300150.
Baa Baa Black Sheep - Piano Instrumental
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34c6a83e9b321efb38e8a9f1677cca0b115220646a4d67ba738de87b80198280. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/NL7RF2300151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b4924f1062b3cfc3caee25db685744cc7bb58c162f058f961ed13961f9c9068. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/NL7RF2300152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8567123b423590785f0cb51b7d3dca5e9dab71237954cbd2c96faef44f51710. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/NL7RF2300154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d3fdf4faa66345e83d53fdfa0fa706e3fe9d80459221f3d178637d08a201649. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T19:18:33Z), 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/NL7RF2300155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed43907c97a2d638a19e2d76bf14e75958746d04e15b5801e9f12303e4371f20. 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/NL7RF2300156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c1009ce94e05a0ad0c6a0b5a73f3bf76ca921d1b86ce41dd2a5f0382453dca5. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T12:02:42Z), 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/NL7RF2300158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe22ea48d16e5ff46327d35fbf8468e222fd38a41e97c244495ec508d3b478a88. Chain 2 (Bitcoin): anchored in block 958882 (2026-07-20T15:32:25Z), 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/NL7RF2300159.
Head, Shoulders, Knees And Toes - Piano Instrumental
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a8b46a5ae81a48b3188e61073e40d71c166f488777d1fad29f8dbfcbf13e97f. Chain 2 (Bitcoin): anchored in block 958705 (2026-07-19T08:43:25Z), 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/NL7RF2300160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93b640e08bdec31a7dcb2405fc3cda004f64ba847559399b2469f7c46f58cfda. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/NL7RF2300162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cccaeb91a4429a014d6611709760c9c9b34ec0679a52d2a6ff8449938011b12. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/NL7RF2300163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2438eb86b752d7891a69c57ee0265aa4e95b91966f0056fb4943d3fc06b5218. Chain 2 (Bitcoin): anchored in block 958121 (2026-07-15T10:29:36Z), 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/NL7RF2300180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f9a019afa4e87f029c6f5e4932dabd5adfc024482782de137c442ab35ec7ac9. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/NL7RF2300181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8d5f61ddddf4c22282d9c18df9584ff5bcfe13fb11aff83fef016e81e08d7fb. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/NL7RF2300184.
The Most Beautiful Lullabies (Music Box)
De Mooiste Kinderliedjes Op Piano (Vol. 2)
The Most Beautiful Piano Lullabies (Vol. 2)