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 0x5ae617b9d75041f6cb59e14af9a148574381095fe42f1b7289f3a87f7744546c. 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/1037b8e2-10e5-4a81-b3d7-bce1a0d0225d.json and https://artists.proofprofile.net/proofs/artist/1037b8e2-10e5-4a81-b3d7-bce1a0d0225d.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 0x61bf7910a0c64e18c2ddea9af069e73ee45c8743b33d947a5df97e8fe0d314db. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/ZAEI72000121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce0e116bc7886619c761ffda896194ff6437eaa16014608ce7b329d6b6fe96a1. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/ZAEI72000125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61bf7910a0c64e18c2ddea9af069e73ee45c8743b33d947a5df97e8fe0d314db. Chain 2 (Bitcoin): anchored in block 957874 (2026-07-13T15:43:57Z), 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/ZAEI72000121.
Amaviki (feat. Jadenfunky and Stitchgawd)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b58ca9ee1cf72bf1d80c756d9380e7df36becfcbefd4a862ec93f4de3b2ff40. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:49:13Z), 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/ZA56E2303372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c286ca3e5c84d48fde543b40ebbbb0d247ff6537860effcb6713bc0bb3dc42f. 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/ZA56E2304024.
Mhlaba wonke (feat. Sino Msolo, Mthunzi, Da Ish)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x629d19b31316d039db0966d6fd3ffbe76eeae449860a8604e1e1d789f25ae53e. 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/ZA56E2304025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacfb691b56c8773f7f055128a7718456cc3f1c6b550b45406cbaa9843a020fef. 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/ZA56E2304028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x308de0b32844183d26eb31329fdc3b0345517165be45bfdf1cfee06b12c39881. 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/ZA56E2304030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80184a260b673469a03d1e712674bd0cab10f80d08931af01b44acab74bf75da. 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/ZA56E2304031.
Inhliziyo yomuntu (feat. Siya Shezi, Kozzi, Dr Thulz)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde0b4ebef43ef68cd5bef18fa2a26d1f200028207a9f7faf92e0a297ef7cd09a. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/ZA56E2304032.
Uzongikhumbula (feat. Jadenfunky, !Sooks, Siya Shezi)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a7da2310a794262ecf30d01886378ca68071f468e4fe35ca6b0e4e1ae9a0941. 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/ZA56E2304036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x041a53c5434c05d586fb15effd039c8a82c4a053e3983a8938767e971839a890. 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/ZA56E2419775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb213e006cc8684b21ada661a41fb8f9dd70a1785ef72a9ea102fc754cfff17e5. 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/ZA56E2419776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x041a53c5434c05d586fb15effd039c8a82c4a053e3983a8938767e971839a890. 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/ZA56E2419775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb213e006cc8684b21ada661a41fb8f9dd70a1785ef72a9ea102fc754cfff17e5. 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/ZA56E2419776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x006b8359156db20b0f8db695df32a88609eef15d707e67595c640ec594f3c192. 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/ZA56E2419778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e12df4a728b52ffd9f4d99c03ec876b26028677d2e2eb9b870acd90ebbe7d5b. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/ZA56E2528307.
Intando Yakhe (feat. Visca, Mdoovar & Just Bheki)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa738454c31ca0f66885dee1645f39c884416f5d731e765aeae098ff7723b553. 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/ZAA012200150.