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 0x00b2e00e0c27004dde3002be0116f2aa84c29afc1379cb32938016a1f42caffc. 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/e3d229aa-4879-46ad-b842-9e37ab64e49f.json and https://artists.proofprofile.net/proofs/artist/e3d229aa-4879-46ad-b842-9e37ab64e49f.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 0x3547f24ad096b0a12fbd2bc1cbee9f6ab8d0a66a14d5428160a0f9f31b597cc4. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/TCAGK2265736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90a2353e48844c3930b0d6105f38063c4200776f3afbe0336fa17e6ba32bbe87. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/TCAGK2268085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a2d2d939067d8c5b6ef5eb9b18b2c32f74a97a2dac95732694457c992fb2416. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/TCAGK2268201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb39ae29cd0ae1a030c815905a7024673cc6e7a699e8ee446f61cb243c45c320f. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/TCAGK2268239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41935bb3af09797e55845e0fd88a0263be88b8f9fb241dadeb6d1e02ba44ab6a. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/TCAGK2268332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71707cca2bdae2aae69be4c4b7bb78db92a4449859391a26ce0a5756bae39631. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/TCAGK2268534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf848ab88a0080a9de6c46a107e2c46aa81cced966353dbd1666ead00265b8bae. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/TCAGK2268577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fb90f0c7f348f61a22591fe329c89ab729fb89f2629a6db62fc49dde14210c1. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/TCAGK2268601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a2465977a18282f63661ca678072207a75565f04f0c84dfe952ec124c672023. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/TCAGK2268614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f15b5b4d14b695b4313af6aee302de6b01ed919c74aa298517d024b0e9cb5d8. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T20:46:54Z), 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/TCAGK2268513.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0164750a4402be2620e756f21fe1bb791fda0f6f04e193eef3be4d602af89077. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZTAU2454420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0287b2cd76bcd1ef2917e5ce1b4ce662226d04bd7cc523828a1ebe9e83166be8. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZK6P2498388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b7ceb9e0ea314db0578aa5d148ff76925975101b781ad7ba68ed7c4cbaea508. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZHNB2463347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d4c13acbe74f32e3f4e9edebe4497a0414fd8cdebc23ef74cdcd15c52b744a9. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZHNA2439216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a7d834b72e324741a52378355e16617379206e25bcd1159a27b79fe03296740. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZWFL2372317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x309ddbfa57543aa23c6d3276d74d756f5e0b11e4fe23682cc1248445cbf8dcfc. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZWFJ2314405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe12706447de0bd557b30d7ca9e8b3fe2faa6a8c316be4c694f7e37898c27673d. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZTB22348420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfba7aa3f10d505d6535249dd1694c62c462266f0d88301cb9b67b574e074265f. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZTAX2312740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74c5e0649a3808c0834533a36476aad1f4d5ba281dcb3c0f3af1d8ca24f64298. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZMEP2395186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4acb407b5161957cf3d0a7bae186b2c7475d56a85fee9fb80620d1deb19a40c. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZTAT2238636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a102deee9456d907a74417551aa7d55acb44c8c76dd344669b8229886cbba72. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZRP52239055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54353b06c6c0dc82ee98147d3346c15c79e33a53da6159a70beb01ecb0843217. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZRP42231893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cc1fbf51af62d5548699bd175f211fcec2f5cd4b7924c7ecd19c091f1baa827. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZNWW2215674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca33868ecdcced1130088a32b8fd00098bca894da2cd9dd902c75758825ca39a. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZNWV2204502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8b40e328d828d84ab7e1938b27a13fb5dedbc8afe01539dd411e2978566251b. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZNWT2272855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaacc4cd3fb3138d71c1dbe38b9cd3c6bf373477aa47963f85e568364e0006e71. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZNWS2203438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2910db816436d4bfd86739f4dbcd3c2cdab8dd28fbcc14cb8ed6ff24912bacb. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZK6P2225590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8814cf755d8beeb7e9b86c8aff8edba588e8c9dffc486de9d4078f82c30fcffc. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZHN82207634.
Batswadi Banshile (feat. Dalom Kids & CK the DJ)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68b38a68b494091c87c2d826219beb28772baf73bf23147758a140995783257c. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/ZA7VV2410014.
U Randza Mani (feat. Makhadzi & Mr Brown)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeeb801dcd39af6ca14d7fef54ee201797c708f7901f155d2b111965c41805087. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/ZA7VV2410015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34b7f1d9c8e9f325a8b8c770a58191897a6988f9f7db9a89445f3317ac25b915. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/ZA7VV2410016.
Siyazenzela (feat. Dalom Kids & Tman Xpress)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65ef194569ba8e4971e8ed1620fbfc6bde66db290b9a566a17fa50dc4af487df. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/ZA7VV2410018.
Makarapa (feat. Makhadzi, Shebeshxit & Naqua SA)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44a2390cfb750b3eeb2ca96501b29c2d2c13bb3484f8f8c3eb1131fbb5eac567. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/ZA7VV2410019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc73974806eb2d37f41477031f9430148592e518cb0745961305efe4a98e12f6. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/ZB4M02400013.
Makarapa (feat. Prince Benza, Makhadzi, Shebeshxit, Naqua SA) [Remix]
Makarapa (feat. Prince Benza, Makhadzi, Shebeshxit, Naqua SA)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4aa1f3b6243901f1489674072edcc3bb7a036e95b70c0c76ea7a3c40eab5c543. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/ZA56E2315179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0c78e62c4a0229cd1b16933b32981b4279d1f572d18ed93ed49b857f4066292. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZRP42247589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x021a3b493052fd84ea2ec5bc6a357e301ec8ab9fcc9eef3db4bc8e2bffe74013. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZNWU2276349.