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 0xf660a399e283b64f4b98d60552d7ca6082421dd87ed21d6d7293709290aed952. 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/15b9689b-3506-4beb-9e4c-612fd7e46ba3.json and https://artists.proofprofile.net/proofs/artist/15b9689b-3506-4beb-9e4c-612fd7e46ba3.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 0x9a4992e17b4aacfb7caaa6da981ab458a512dce0eff470d8264c19780336e8b6. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/QZNJW2349141.
Pavão Bonito Franca Sp Egnaldo Novaes Clarinetista
Tocata Ccb Pavão Bonito Artur Nogueira Sp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05241f80d98159dda0f9bb4da4712e7dce66fb75e3ae6cc21f8191cd4ba7fdf2. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T06:52:41Z), 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/QZNJX2368973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5ba83a179a61caa88905d36b7b1074edd30f13fb349c4f614edd1cee2270aed. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/QZNJX2368976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8913c463ef64b15b00ebd27fb0209d067e8204ac3906157d93c188c73dfdc182. 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/QZNJX2368978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef2169baf177937231601c546cb46015cd27d19ee67221c68e8f6dfb63cea368. 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/QZNJX2368982.
Tocata CCB Mizael Berganton Clarinetista
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90b6a08a302a665e48f9d8fb5abb5d4700b05c11518ea26520a51f195d5c362a. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:02:59Z), 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/QZNJX2382133.
Tocata Ccb Américo Brasiliense Sp Pavão Bonito
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ffacb0fa8d3d13ec8e7a2077f2da6fd4fa099679f550a1db8f95c942416392b. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZNJY2344170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1225fd3594891b46dba75eb8535ba72d5fbc845ed41bc385603c0356d2098e7. 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/QZNJY2344173.
Tocata Ccb Araçatuba Ano 2000 Mizael Berganton
Tocata Ccb Valinhos Sp Pavão Bonito 2007
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x144267b662146cf5ad8715ea0ad2d43a2e344226431b2cd90ea5892a2236b468. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZ5AB2411062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac688825cdcad65be13ab43aa03b323cc8d376bc3eb9b98d003271d0c12ceca5. 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/QZNJV2432084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6a6e8d3bf2ae662c871ba153873aabbd3514c19c807497ffad485b67887fd01. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:37:04Z), 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/QZNJV2432085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfab1bcde04e65f8c9d00006be8f19ce990bab117eff8a203754f20e1f1442b3d. 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/QZNJV2432086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17f299b64d9974c1e7e9236110d63342b65ea35daceb67a0d3bc0907478b9196. 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/QZNJV2432087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ff6ddd98c0d958b4e116c2e8d91d75962e7c0b90a986e4283d698bb044c9010. 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/QZNJV2432088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc13f5b272eefa7e6b12f2dbeba6da0df624e4f44038ca2666fa99a7763584442. 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/QZNJV2432090.
Tocata Ccb Tiago Daniel Tubista e Amigos
Tocata Ccb Ponte Gestal Sp Mizael Berganton
Tocata Ccb Mira Estrela Sp Mizael Berganton
Tocata Ccb Sorocaba Egnaldo Novaes e Amigos
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5daa21a51b0481e44cc1f8563ea9fc17b88d8b3c91f17920379a6c87bf8870f. 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/QZNJV2554151.