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 0xcd5b48d56ba17ab6c72621db3a1ac10a627faf39bd45533ad35ccbad073eeec0. 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/4dfee7da-def9-4956-9955-14ec50af8a9a.json and https://artists.proofprofile.net/proofs/artist/4dfee7da-def9-4956-9955-14ec50af8a9a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Mozart Lullabies, Nursery Rhymes Songs, Twinkle Twinkle Little Star and Other Classical Music Favourites. Mozart for Baby
Sonata No. 16 C major (Sonata facile) , KV 545 (1788) 2 andante
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 0x1f7d2cf909352672ecf3c29bf4773b5cec0691181ed22469ed20fcc61ebd8203. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T10:04:50Z), 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/ITO101053197.
Sonata No. 16 C major (Sonata facile) , KV 545 (1788) 3 rondo allegretto - Classical Music for Babies
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9573d907e4925592ed5079e8253c96382ecbc04d20f8763469bc2b9c890e0563. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/ITO101053198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e39eeb947bbe4d233f1466b697022482b5e0c92fd08451845079d16b846aec2. 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/ITO101053200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe49d11a1da5b4e748329867031a74b7891ed09b83c94b9b95d59c85acd4d6ed9. 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/ITO101053201.
Sonata No. 8 D major, KV 311 (1777) mov 3 rondo allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x819e34cd8c5a15049ba7e6ad1d9acb6cdfbbb7cced6ea441900af1d220c1ac6e. Chain 2 (Bitcoin): anchored in block 958104 (2026-07-15T05:34:05Z), 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/ITO101053203.
Sonata No. 11 A major (Alla Turca) , KV 331 (1783) 1 andante grazioso
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67d613e8b7e2ff6c0f8ff9625a1d8c8992cd6299fc1964e6d817fbec7df29334. 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/ITO101053204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28162c35d7c9256239c78d3050f1bce5d985eea15a35b49cd99831ab02de1f3c. Chain 2 (Bitcoin): anchored in block 958611 (2026-07-18T21:24:44Z), 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/ITO101053205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d7c368c29fa9ae803919a1f4def1df6eff1ee5e126fb9567a10a5bf693ce006. 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/ITO101053207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e93f827311570bff42f661aaece297ba139d349acdd6706059e7ce1bfeabcf7. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/ITO101053208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa56940f5ee8f61b1a487a587217ac6b2329e86e890bf0d2fbbe4d5ae16b21524. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/ITO101053210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6e4770b225955827ee94cdd7c698ae6e0886a229740178842dcdb4646ae509b. 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/ITO101053211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ada001aec5498669a3cce64b66393ec3aca40ecb0d9d01d4c33298eb3eb2ae2. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:28:41Z), 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/ITO101053212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d14d33d95440af36aae57ea1c28f0082005b13c9b396a4f4f09863bcc350ea5. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/ITO101053217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f68cc0049df1bf772dc9c00ee785bf9ce548f137ce5271adc0e5b343eb4abdd. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T15:52:43Z), 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/ITO101053228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe03986301acbfdb01db55a12f0a25efa745a357fd22e33361c010b47bda8967e. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/ITO101053230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54b3e0fb9eaa322840d65507d5096dba7b830781b7cc5373dacef97a59167290. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/ITO101053232.
Sonata No. 17 Bb major, KV 570 (1789) 3 allegretto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f6c9b23c1174dbcdaf04ab22ffe8a374972e6bbadf0fdc8681fc27a97e131b1. 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/ITO101053233.
Sonata No. 10 C major, KV 330 (1783) mov 2 andante cantabile
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd0570bfbfb559dcca773695d84783a38bc0b237102f9d6065735cdd45d259a2. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/ITO101053235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a6333502f0e07d281f7f61b1a4452c539be9f5a86567655ced431989dcb87da. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T16:24:30Z), 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/ITO101053237.
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