Sri Lankabhimanya Wannakuwattawaduge Don Albert Perera (; ; 5 December 1927 – 3 November 2016), better known by his adopted name Amaradeva, was a prominent Sri Lankan Sinhalese vocalist, violinist and
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 0x1b0933601172b6813e08ca6169c07e81a2683340e4cb0ccc7c104734b950f7e2. 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/5fc49e9c-fbb7-48d2-b83b-5c752df3a035.json and https://artists.proofprofile.net/proofs/artist/5fc49e9c-fbb7-48d2-b83b-5c752df3a035.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 0x98b0451399d22776bddb01c224c896e162f686d23e9efebdb73e97a276a8894d. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QMFME2070406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2423a016f7539d8c4a9582d3083668efbe19408d23ba0e1554de86c1c3c36d95. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QMFME2070409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b8e2b1f148909998ea6fa49256ebbb98fdd892225bd08fc548522be75df03cb. 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/QMFME2070423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcb8ad0b4d3298fb4f878c65d5f82d2830c73f7183a4d130ed17ad6529553cb2. 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/QMFME2070424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9b0f764f1500e211cd1fd232255162ce3ac5a358d87f77cae6a1ca5690b4307. 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/QMFME2070425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50209d42b29d63cc9294f9ce79253c14dd830082b43eb20089e5382a1ba9922d. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T17:36:00Z), 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/QMFME2070427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x950b130132b9188980d58195b8d8405adb0193bfcfb0b2d0afec827b0e08eacd. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T17:35:24Z), 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/QMFME2070428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x050ccea437c1f25891dbf17acf751dfd0d2e9f0732f9d1187cdba6a5edb63b2c. 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/QMFME2070429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc98c28af0ec5c79e11ffed9e1b2ca62a6dc219ba4c959e78f81084e264ae393d. 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/QMFME2070431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ca8fd737aa485fb5e44ca849f95954759ee6e983acccdeff39249a217236434. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:06:45Z), 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/QMFME2070433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x544401fcee51e5535eeb5e83ed75d9074e6c9f52112f73ea3cb3f4e14194bfbd. 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/QMFME2070341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7826fa339f1844c1f0a4473b580b3868819cc7ad425057c21a1576151ed5aa18. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T00:35:28Z), 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/QMFME2070344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd18970a2a1a877ea00c9f2bb8ae9d515965176f3a783343d7b2f3ebedb69aa74. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QMFME2070349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3b3ab254d153f191f307baf6a6c439b4238bd54b54bd5b678e4e1ac365577f9. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QMFME2070170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0144f06d46276f5aa81b78e57e5801e7ed68757c123040509f2762cd1ce2978. 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/QMFME2070185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x776681a5bd8242fd88178423b30b1472cf97ae8da1382a60b4efd9fc70af3568. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QMFME2070194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x183ec26d3319acc2b15306dcaaff5d53fc8170ffc74eb6a8d647b8fa1994f642. Chain 2 (Bitcoin): anchored in block 957898 (2026-07-13T19:28:48Z), 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/QMFME2070219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2db24831cfcb0c4c22d0be81c745b0507c1f4f3f6a2cb0e2caf932419ec084c6. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T19:00:50Z), 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/LKA000006019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa578cbb4a4d8c2c04fc0cc9a30a039961ef0c5082a85bc2f73616b8417e3f5ea. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:41:59Z), 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/LKA000006017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cc3972f3f9bff58e86358bc6a912e7a50cc74d4159b3a18bf4d1cf4c99a3cde. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:06:42Z), 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/LKA000006018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2db24831cfcb0c4c22d0be81c745b0507c1f4f3f6a2cb0e2caf932419ec084c6. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/LKA000006019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b0d179082ddae57f46572198a2039154605fdd1eda362391597f562736e51a9. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/LKA000006021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e994ca50aec248103f1f1b21c7a6c7a999036819b4b9b63b49474c0b6e244ee. 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/LKA000006022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8748c0211e3afff703442436eaac7e4482b39ade278223d8d948800dcfa86ff. Chain 2 (Bitcoin): anchored in block 958523 (2026-07-18T08:54:12Z), 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/LKA0W2212558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f407165e635958c3afb58b18ae83315c774445f6a14a2d092d4e63db1f3443a. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T16:23:47Z), 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/LKA0W2212618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c57795d439ee5c10626dc1d10bd774a3d301a4b09895a90f59e6354611a380a. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/LKA0W2212621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf053249f3999ba59f2d13e329d0bf08d6b454769d91241f92a4477d6c03d52c0. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T18:57:30Z), 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/LKA0W2212747.