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 0xd906457c4f1daec99fc55a0e2ce77a8c9f121505d2e5788d45b9f6341dffd7f5. Chain 2 (Bitcoin): anchored in block 953678 (2026-06-14T19:23:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6432912a-7252-4684-b447-cb6f5dce3a64.json and https://artists.proofprofile.net/proofs/artist/6432912a-7252-4684-b447-cb6f5dce3a64.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Basha (feat. Young Stunna, TOSS & Prvis3)
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 0xbe07409e3e8c8d78a9ffcfa301a219064262c105dc64335a0d7b6090d695dc06. 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/ZB1OS2300195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07272ce4882c9cff7617778966cae445ae36e47734ec41ef9802f0d2c7239a6e. 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/ZA56E2315070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a3e47f7a4245dc32c0d9ae4a2217240b60d06747c5657553e06c6aa2bc2b1ab. 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/ZA56E2315061.
Iskhathi SamaBonus (feat. Ntando Yamahlubi, Mdakzin & Thatohatsi)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd470b4aa8221bdab25c38b5dbf9b06898a87729d487dbfac2e3002ab764fd9b2. 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/ZA56E2416821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c7e5b664240cf517d16ce11c40284bdd92e10507e863e813305244e1db4f7ec. 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/ZA56E2420392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe0ddd19626a10d5281ccbbbc753314a4c9682f4c256df6baafe75307c9cf98d. 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/ZA56E2419662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6647768dfe11c7b9642335ff4a30afe950d9b57361de9eaa42fe95f334b9daa. 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/ZA56E2416610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72a8654190a77c932ca0a9e88c546bea3ebf197078f61694413df81bd9a779ba. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/ZA56E2416611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0577d2bad997330416f3b853988d6021337b263542b585a3a4e6ad3ebf74391a. 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/ZA56E2420478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3350abd8e258526ee5f24e5b47f9d57411fa186d9b7affeef6e8789ae8b725e. 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/ZA56E2420479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98c4cb9b3fe560b8f0890d60ef6ecd0a21ad7b933e87e3585ac6dce646101d5e. 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/USA2P2324642.
Desha (feat. Ntwana_R, Triple X Da Ghost)