Vithana Kuruppu Arachchilage Clarence Arthur Somasinghe Wijewardena JP (, ; 3 August 1943 – 13 December 1996), known professionally as Clarence Wijewardena, was a Sri Lankan singer, composer and music
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 0xb8834f02f0f70fef6826461cc38b0e2cada2a3eaf5d518ef66891ee325b8adde. 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/68a1b807-ebe8-45db-ba8c-3a53e4b3d996.json and https://artists.proofprofile.net/proofs/artist/68a1b807-ebe8-45db-ba8c-3a53e4b3d996.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 → 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 0x170dcb98da5847336d21858cab135689a956c0ec1f773bbffc1695fdfef9d08b. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QMFMF2008873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c2c967ea7a5c69b0098838a334cec0f448713f2da3817568d01dd84edbb76e4. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QMFMF2008775.
Unforgettable Melodies Of Clarence Wijewardena
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf44112fc895bc44465ce6c7dfd8730a8008d160dff1aff3d0c92f4e45741dfbb. 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/QMFMF2008689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x944362feb6429c08892ad99a348e44eeaa99e29a2bf5491a363a626cc60c6cd4. 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/QMFMF2008690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd93d1e3f0e75da2adb952b8458119261b0229153f4c382806e0981f85296222a. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/QMFMF2008691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa01a2c60bf698117e513d96bd4013ea3959af07aaff4617e030cd0cafac75b17. 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/QMFMF2008693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a916a3e2a0461764a59f35bf5189cad36de895734ab87078f647cef88210b47. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QMFMF2008695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d2daa95a262c1260b63d70ee744f4dc7a357b5af8b3d3e2ea963186f2541998. 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/QMFMF2008698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc38a1b0076d1a090f8389fa55da0493fa71272efe6e0f79607146918483e3603. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QMFMF2008700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ab7cde9960ec85dcaf5cdd8fc397913912efbbabd15e61ea8950b078d4f8318. Chain 2 (Bitcoin): anchored in block 956748 (2026-07-05T05:55:59Z), 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/QMFMF2008701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17ebbcb9085387124a1104cfc28897d997cd544fafc6bdffcc9eb0ef60ae53a6. Chain 2 (Bitcoin): anchored in block 958625 (2026-07-18T23:11:57Z), 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/QMFMF2008702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc776d3be47c9d6ca8e9e10adc294e9db8dfa302ad480ffcb313b3913b424539e. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QMFMF2008703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21a7bb4eacec3b7f35378932b619f50652fa4dd65d5ce2292f5bed18fa01e9ec. 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/QMFMF2008740.
Unforgettable Melodies of Clarence Wijewardena
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe01e8b02983bd4a96cfbad48a0049124cb7c12a60e25b6491b189af1a2b675da. Chain 2 (Bitcoin): anchored in block 958622 (2026-07-18T22:58:55Z), 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/QM4TW2167791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbab85a16b92f1b3eabfb0470ecd5e426c76c06bb67ebb71f381668b86ec59d7. Chain 2 (Bitcoin): anchored in block 958822 (2026-07-20T07:11:55Z), 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/QM4TW2149864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x223fcc284078e615dbc00c10137c5298b4a7e14c32b8245ebf78c8ae95a18bfc. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T08:28:45Z), 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/QM4TW2152956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54c498983407b44cd398e42bf3503dd4fed77396171d25a0f076d015f4e1a71e. 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/LKA000006097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fffdc1da0985155daf0ed60e37ba585c2cedacb5b8455194b20619f537eb029. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/USA561228546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cbccacf6ac791a5dddb2a0b89a70f7637edcff55cf6a0b0ad0ef98048f042b8. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/LKA000006105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55112b7cac4186b312392aff1b74db036c4a2f69db8312d55aa183c9f61137cf. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/LKA000006099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd08f4b8a83a1c644f393ef0b2cbe2abced4d800e56a47cabfe0e9dcaaa0f80a. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/LKA000006106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51e64b3e6f6128412b4097a9b9bd04e8e18466a3d481e10ba781973a17ff5e9c. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/USA561228549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa429fb44008cbeaf333c7e5119489cba2f22b899273ef9cc766ac0ba9564c623. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/LKA000006109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd08f4b8a83a1c644f393ef0b2cbe2abced4d800e56a47cabfe0e9dcaaa0f80a. 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/LKA000006106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa429fb44008cbeaf333c7e5119489cba2f22b899273ef9cc766ac0ba9564c623. 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/LKA000006109.
Malata Bambareku Se Clarence Hits, Vol. 03
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3d0d6dd77c6376dae918680bfcba82e9ac04e291ac67a70d38f932ae07ff3e2. 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/LKA000015539.