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 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 0xec5b6fdd50a91c716ed83994257e1f24381f25ba463182caae6763d52f3abea8. 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/73efe158-5317-4dbe-beca-d818ecabde99.json and https://artists.proofprofile.net/proofs/artist/73efe158-5317-4dbe-beca-d818ecabde99.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1 000 000 Amapiano Seconds (Kings Of The Surface)
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 0xf85f8b7bdf93687f8998c310e8562a8de76cb452e5e725afe856a693216e8751. 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/ZAE3A2100058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e7350501431e8a4ab3ab3c504da37b3344a8a44f626b15e8478653146d146a3. Chain 2 (Bitcoin): anchored in block 960108 (2026-07-29T13:09:35Z), 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/ZAE3A2100045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1740f19eb97a02926130933c97cd0610877bb614b48b3c0836b89f62875f54b3. 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/ZAE3A2100064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4656f57b112b567e7be1fd2a39251edb848cc187fb129561c3ab1f17055d8650. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/ZAUM72201903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27934ed29c98086c93f6d5d49b0d2c665706344191f84fca13b8e87e083af2a6. 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/ZAUM72201592.
Wandilahla Kdala (feat. Mkeyz, Basetsana, Mnesh & Da Ish)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8af47cfa1971c49c88d8a36a772e29e09958cb98e8080b10f9d4558450dfe686. 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/USUYG1476177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27934ed29c98086c93f6d5d49b0d2c665706344191f84fca13b8e87e083af2a6. 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/ZAUM72201592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7804733fe8116fd318c3c75981f4e0c852b41edf0a353688d7cf7b5c938ca44. 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/ZA8MJ2205001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e7350501431e8a4ab3ab3c504da37b3344a8a44f626b15e8478653146d146a3. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/ZAE3A2100045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52f16d7cd3146ff6fbf97aae34073e93678d29e794e34e33ccd2f962c6b5f941. 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/ZA34K2301374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2033ffc6b4e638e3e92ee20fd952a65f129adfc60e5ea926adb3b3cb24a9c7fc. 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/ZBTEH2400002.
Music In Me (feat. Basetsana, King Deetoy)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20d0d5e7698d4a5c8ec14b0328cf2a7932b6b8e8f69a2198cab4fb94fc5678a1. 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/ZA56E2301982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52f16d7cd3146ff6fbf97aae34073e93678d29e794e34e33ccd2f962c6b5f941. Chain 2 (Bitcoin): anchored in block 957064 (2026-07-07T16:43:08Z), 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/ZA34K2301374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17151f8dbe0278a4ccc49f8364f9ace9f1e741a8cefe04bbc5117fbc2f10aed6. 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/ZA56E2200776.
Dali Nguwe (feat. Nkosazana Daughter, Basetsana and Obeey Amor)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb94f9e6c39643a987e6bc751d4d993d7f28715616a3e8fcc97bd4f4b5c5b44e. 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/ZA56E2102175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde5ed181b81803944dc644b0110d2671bfb4b73106cc86b992e6a309d743466e. Chain 2 (Bitcoin): anchored in block 957065 (2026-07-07T16:43:21Z), 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/ZA56E2304157.