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 0xcbea813c0b20830714535ec2f8834e120db26cf9cc698436cd5f613cbf0c4e4f. 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/bc1d106a-abcb-49c3-940c-eb4bceecadd6.json and https://artists.proofprofile.net/proofs/artist/bc1d106a-abcb-49c3-940c-eb4bceecadd6.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 0xc5d572ebb49d911ad7e487247748286378199429b559b8f525fb3b2a3199746e. 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/QZFZ32178834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03a2de08b8bbd64c743bd14bff416f9d35d7226dec8f5006118e01c577768aba. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T12:42:54Z), 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/ZA8542100003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b445b7dfa5c40090af2f3fc86f4c6871dcc3b9cd65fe7813e8adb6bce5316b8. 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/ZA8542200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae03c6f355de6998ef77d86b85fae05bfd9e78aa92fac1d68bd8d3e4ead523e5. 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/ZA0AN2200018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d4fd08e4fd38eef429ef558bb5e5935dddd6641509b646da342cce8b54ff79a. 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/ZA0AN2200022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ca872dfb8ded00153e430cc6f3540022f4c6b1e9865063b113ae5833d5a6de5. 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/ZA0AN2200021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b445b7dfa5c40090af2f3fc86f4c6871dcc3b9cd65fe7813e8adb6bce5316b8. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/ZA8542200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b02aa6dfe9e53f8bea4a445820a3b0e8355ded7a350360d8e4d0e3318ef5f90. 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/ZA0AN2200020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfafa2a046ee620d486d2c15e11e1bd37252f56b5702ad9ee1994cf1f0eafb66c. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T19:02:34Z), 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/ZA0AN2200036.
Ekhaya (feat. Sayfar, Toby Franco, Konke, Chley, Keynote)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb734830e24d949d8dd2fb0133a21073d77ec38459d9f51f2d94e9c08a4a97a3f. 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/ZA56E2304263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a79920e37c2cb43fa43cd08459bdf0361fa2149fef025fcdb62b920d2c47ec2. 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/ZA56E2304261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b8012f0e021ca16030b0101e49c0ed462e87d4b52297d1d9db99062464f494f. 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/ZA8542300007.
Lalala (feat. Snenaah, Musa Keys, Soa mattrix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x643701930876561849a8c027267b6a74180ca0ad48a55b2dac17d82d3ff37d09. 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/ZA56E2304262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb734830e24d949d8dd2fb0133a21073d77ec38459d9f51f2d94e9c08a4a97a3f. 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/ZA56E2304263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3afdac7c34f4a41fe3c79fdd7172d38fbc92701310e6fe6303e19a122450438b. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/ZA56E2304264.
Umsebenzi (feat. Optimist Music ZA, TmanXpress)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c2799e7d2d7c019a04a27138fe7462f60c6e4f6daf21ec3ffc446c2e7181f88. 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/ZA56E2304265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4634a56859ae2bbf1290cc6039be1a1f1f7c2c48286ba188c083529db066dcf8. 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/ZA8542400019.
Saka Malume (feat. Tumelo_za, Sayfar) - Radio Edit
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x352d7a5f73a11d23d92c76d552e0920334bcd4b6df713a2804d9b7f4e2a9183c. 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/ZA8542400020.
Thandi Mali (feat. BenyRic, Cowboii & Tango Supreme)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30b55158f8df3727946fd1222632e2cf00606db3ab2b58dd955afd913d28762f. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:05:08Z), 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/ZA56E2527455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f7c7a142d44b8eaf5651e1aa643742bb67961dc2db755a4961953e13a696863. Chain 2 (Bitcoin): anchored in block 957779 (2026-07-13T00:19:08Z), 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/ZA56E2527921.
Nomoro 2 (Dlala) [feat. LeeMcKrazy & Tango Supreme]
Emazulwini (feat. Young Stunna & Leemckrazy)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb93607ec935005b922de1a5d8681efddb8bb8eb50c97b9d31da36a2f8752e535. 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/ZB1OS2300243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11c17b1c3d09e8af27dac8ca6e36e92f7e2284e2b1170fa7fa730285e4c7d217. 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/ZBC042400010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc967ccb0d9cb385b4937dc676f5494d9d0898e153885fd83a6a7a5cf94f72643. 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/ZB02I2400009.