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 0x98b7c7f1931f31e0c14dc82bcedcc8631951b7294924fb7b7311b4f72b44756c. Chain 2 (Bitcoin): anchored in block 953612 (2026-06-14T08:22:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/15af57b9-ec46-4c9c-a277-d56505d97f18.json and https://artists.proofprofile.net/proofs/artist/15af57b9-ec46-4c9c-a277-d56505d97f18.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
Violence (feat. 67 Dimzy, 67 Ld & 67 Monkey)
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 0xd82965bcda97b6633ad2af8994fdb2ccb1a3e58c7e60034ea411f017dcfe40d2. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCACU1667662 — a six-check JSON result.
4 Days (feat. 67 Monkey, 67 R6 & 67 Dimzy)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd515baa58db9e27b06701cece9e340b03a206616ba7ef4fe12275b5b3b2dbf1. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCACU1667773 — a six-check JSON result.
Family First Freestyle (feat. 67 Ld & 67 Dimzy)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbff025cf1a414b6b1a4a3a032ace819d9a845bb573ec5f00ab053e88561b431. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCACU1667775 — a six-check JSON result.
Confused (feat. Reeko Squeeze, 67 Scribz & 67 Dimzy)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a6f63b49728d67259360f80771102400ee127ca1cbdfade2cd17307b65a71ab. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCACU1667781 — a six-check JSON result.
24h in the Trap (feat. 67 Dimzy, 67 Asap & 86 Stampface)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x779b834c070c4af33d17f87e751de350532ac4a022b4035566a8fc2fe4aff449. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCACU1667790 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad4e6f595fdaccc2eea25af0bab78e1cd3a4809f84e11a5bcd639926ede34cc9. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCADA1752639 — a six-check JSON result.