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 0x818557fb490b500f04658c25a5a13b8326f5724e33006066333ad7dbcef39840. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c52e7e81-9012-4d17-bb9a-f6511babbda4.json and https://artists.proofprofile.net/proofs/artist/c52e7e81-9012-4d17-bb9a-f6511babbda4.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 0x18c2437460e81513eb716d7f49788bea91e6f1bbc5fffe64496087302e130891. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-21T21:33:13Z), 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/ZAMAO2400052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb326ef33040597b6724792d396a1dee9f77f4f74821aadcc49ec1cbcb813b100. 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/ZBJNK2400019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb18ad77b236f774fa239b350778ded0905c338c5bb075eab47571da201c458f9. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GX53U2415971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b2b1d1d1c1a7922171d6e14c50fe377c22554fa3d52c6b75d62f64584d931d2. Chain 2 (Bitcoin): anchored in block 957041 (2026-07-07T13:25:45Z), 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/ZAP5S2500021.
Inhlekiso (feat. Mr Maker, Tonic Blue & Lefa X Rsa)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccd0687cc8c3846e9888c8d7f358156f56e9301b2722e065aca1eab52e3ab446. 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/ZA40S2401982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaff6727fc6240f2ec2a9d71dd66066787dbdb7134d7c35564eeca00476e316c. 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/ZA40S2401984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5dd3df7a28ec09b06c311240854ed8b9edbf515e6b48a1d7e0e48f6faad629b. 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/ZA40S2401985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc624581bb0b150cde982e220939a862289cda2980c13024b8993faec7ae96075. 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/ZA40S2401986.
Umjolo (feat. DJ Jaivane, Mr Maker & ZANI)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3658568416822dc1ad9f0a33d918d9c8dd15b8e18a332f5b0209e6ff53c10eee. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/ZA56E2419831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fca704e477672d94f947fac2a0c70c8097a65a086861fd8f68e0962ddc8020b. 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/ZA56E2419784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe48133797f94fee6c0f05fff29e33be61405613f76f0d9c906ccbcfc876ad417. 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/ZA56E2419786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13a5a1826c9d3ed51baa54157fa3ad8fcce80c6b36b88fece9a19373d41e6acd. 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/ZA56E2419788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9420ef0c11140e460dcc062957c0fc928904c3c54839161cd6728fe66648f72. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZWFH2439155.
Asilwi Nabantu (feat. Mr.Maker & Psycho Sax)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93e04c9e282c94d3328e6745b0dcb9c9834b58448fbad90821aac4dce3e97be5. Chain 2 (Bitcoin): anchored in block 957055 (2026-07-21T23:07:01Z), 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/ZB88P2400441.
Emakhaya (feat. Cnethemba Gonelo & Mr Maker)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa511c6c4818bc44f01f26c5ef90d0daae4ff8c5ed9314cafa5722f77c4fb869e. 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/ZA56E2528187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3de048b6d9ca1506121dc4ee35cc6d801af57ad555af53e277fd554cbd46f0a4. 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/ZA56E2528208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9de5d1d66a047b8449a555a5e0fab215bc998f7dc0ebc833a1e27149cd5e07c9. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/ZB88P2400428.
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
Shona Malanga (feat. Dj Lusoul, JustMango & Gubzin Deep)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e80d535747af66a0415baa7696bf9d8dd9c7fc439bcaefec77d2f5113fcbbc6. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/ZB88P2400433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3909beb2c45a50fea355e73deb7242dc20d904b213ca2b4bcf2b002bf140b39d. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/ZA56E2419782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ed965f2e60f867e946b13eddb4d18222ad1d894cd13bc028b448929a104a1dc. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/ZAC012400812.