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 0xe87b560481f889ce711bc5c43a6c5550422bb152cef46875f56c804d5c5ba6ae. 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/768ef1f4-688e-43c7-a9c3-bc8e3093f487.json and https://artists.proofprofile.net/proofs/artist/768ef1f4-688e-43c7-a9c3-bc8e3093f487.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 0x4e63b29aa460af825d5eb88be4743c155e66087d6d5769f061dcddc72748a5f3. 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/GBMJG1812158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bd41918be466610caaeafc738d896e76a0690d047214b07f9e5496b1829dd26. 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/ZAZ0B1800002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacc818db9d03f42b8df05c846d857784f27e13f0c3725be6dd7208035e803ae3. 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/ZA0AN2000020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe418b0da2454947741547d959261129649399d87986123137ac4453c42dc967b. 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/ZA0AN2000040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc69bcbad517a8d44faa5f5b49c17e3982f0f2fb3e9bedd735ad6fdb32900454f. 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/ZAY362400025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e26f45b18632a641c80233989ac8b8d541b2923fe2bce842a7286e848db16bc. 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/ZAY362400032.
Sukuma (feat. Aubrey Qwana, Balinde, Touchline and Jerah)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2968793b1350d77f49c27440e9e51a8f2c59267c8e57c7fac46e59b28a9a73af. 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/ZA56E1903085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9c25dc022722dcfde6712aac0deb62191882a349df0770b057b27cbff27125f. 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/ZA56G2300012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76a37725f1c3d7b3a2e18975ceb564dbb58292619f08453f9f16faa60ff2f32c. 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/ZAA012000438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc33b9c1a03d65a38120a1bbdc582e67557b01b81eb863313654e211b725e8727. 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/ZA89J2000027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaef3042e17682268983b2bb420afd376bdfc4aaa92fc0d697f8e165dac36a8b. 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/ZAC012401125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98645782696d15c997316e6e5bb92ae7a108361dc96f9e025dfa8a3a1ea2c937. 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/ZAEI72400063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57d1279354eac941d792749324ccae9e306c23a7cc5b2fc0feab1b82bba75db4. 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/ZAC012401014.
Lengane (feat. Raspy, Howard, Aubrey Qwana, Focalistic, King illest & S.O.N.)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4f74a216a371975d16f2e4c88e08546b28c18abc8d48f87235c49303f74bdbd. 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/ZAA012200288.
Ngaqonywa Ama-Piano Remix (feat. Aubrey Qwana & DJ Tira)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29c8d2230ab4683996b6a174aa2d73feb07765f25720eb0fa48961aaa7e99c3c. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/ZA0I41900035.
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
Mali (MFR Souls Remix) (feat. Max Ellipsis, Aymos & Aubrey Qwana)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x221c2fcce8c4404242f9182fff4dcd00fcc379f4583623e20ddef45b01085a48. Chain 2 (Bitcoin): anchored in block 960150 (2026-07-29T21:51:49Z), 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/ZA0I42000016.