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 0x3894c020bf644028ad1596f0c9c2214d4ddcb544730ecb338f64fc270dc28e86. 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/da8b1cdb-6669-4797-a44f-e5a509e320bf.json and https://artists.proofprofile.net/proofs/artist/da8b1cdb-6669-4797-a44f-e5a509e320bf.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Khethile (feat. S'Villa, Dalom Kids & Nvcely Sings)
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 0x9c13b6cf73edea0e021a3f87abe3d7612f9a635008967a156d99e77e341af3d1. 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/ZA56E2416041.
Sesa Feleng Sahlola (feat. Terra Fountain, Veyane & Teekay)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a3add4a17c75be05d9eecc288d97b5510750f591aaac66b81745638a7a34683. Chain 2 (Bitcoin): anchored in block 957084 (2026-07-07T20:41:57Z), 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/ZA56E2416536.
Mkhuzeni (feat. Dj Skizoh BW, Mulest Vankay, Sbuda de Vocalist & Dimpho)
Nandipha (feat. Veyane, Meneer Busta & Siah)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3e10c93d7e60b29e9721b52d3f2da0fb8c69913242abed9169dc1a39a4d35ca. 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/ZBDTT2400064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5428761738ee84e67d2cdd036a53bc4555717b1c668bdc9689d0d405bd82c63d. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:42:43Z), 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/ZA56E2420410.
My Queen (feat. Wayne & Tango & Khensani)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82b9bb98f5e7716101b84e008428532e778fbbeedb794946dc08e9795c813591. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/ZA56E2529480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7fe1041bb17e60bd869e5ddfce4615438840c358abda285f4b38438e9195ba7. 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/ZBDTT2400068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15046886c81894145cafa9870de82a311fc499848ee3fcbd9360b8c14c5da6e3. 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/ZA66V2400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81a6662daa72f767ce6242aa34c5c8513bbcd8fa57a0587b0091a141b724a18a. 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/DGA0Q2468654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92b6c9aaee5b873d609901c4619b1827999832a6af6dc753d7f24aa46f06c8e0. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QZES52555637.