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 0x024c791f3e06722257ae20ff50fc1655e7feb9726051c2d9ebd7e5be31e86e19. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2b5b71b5-0978-47b5-838e-16fcfcefb6b6.json and https://artists.proofprofile.net/proofs/artist/2b5b71b5-0978-47b5-838e-16fcfcefb6b6.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
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 0x2c04505dd1afc89fc320e462934c6ec41ea58c118cadebf4bd47ec6b6470b00e. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USXQS1306349 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd04bedde3a6fad3b0dfad6f5ee80a8032efea655174cc0cc98db59ab6f26ee17. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USXQS1306351 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1d10fd919aa7666c63ce2276c4815ae0f04247cafb86090c5b69f973d7c6347. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USXQS1306352 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2501e6dcb487efd6b4e6b5cb9a284d17e530b7530fd39f7a02f79361d6d2fde. 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/USXQS1306356 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ff1beada546cebdf99fcd2d8f2707193d48294f756329090c35fb09d42afb35. Chain 2 (Bitcoin): anchored in block 960106 (2026-07-29T12:41:21Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USXQS1306358 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4400b05ea0d6994caeb9b76d1c453cd8513b4ca7d88c263d196e9b8b2d8c5ee8. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USXQS1306360 — a six-check JSON result.
Blak-Luv Matterz (“My Baby Makaz” Hitz n Misses)
Soufside So Real (Def Souf Records Presents)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9398539d317d20d9ab904f0d38e1a57b9479827459b7e1c1f132ca781860894. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USCGJ0608621 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5aaddfa8e6df1ae67de98aa435685319aa8f546eca26ab2c7a6aa750d1063f3f. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USCGJ0608622 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac4e95c683ea53025f739062cfbd042d6502bc2ab99cc2ff3578cd5ec0257991. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USCGJ0608623 — a six-check JSON result.
Knockin Pictures Off the Wall (feat. Lil' Flex, Lil Pat, Jasmine & Jhiame)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x743ceaea6e1cfbfdb134ea7339d103a2bb5013b25601d788344581c4fec2091a. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USXQS1407391 — a six-check JSON result.
Grippin Grain (feat. C-Note, Lil' Flip, Kool-Aid, Lil' Flex, Lil Pat, Slikk Breeze & Jhiame)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c0452638665936a28418d561558ba806d7a2b1b13d4d8e495abce4ee93c010f. 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/USXQS1407392 — a six-check JSON result.
Keep It Real (feat. Deep Threat, Lil' Flex, Black 1, Kool-Aid & Jhiame)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2455fb92f2ee9d25a86f273d6b848cd293096e2f602a049aaf1a078f2c9c39f1. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USXQS1407394 — a six-check JSON result.
Out of Sight Out of Mind (feat. Trey-D, Shorty-D, Lil' Fee, Black 1, Lil' Flex, Lil' Rod D & Jhiame)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb08f497ddb52f69c570647d628abc9fd2fcf943256582232f19025caefd0256e. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USXQS1407400 — a six-check JSON result.
Bonus: Gripping Grain & Poppin Trunks (feat. C-Nile, Lil' Flip, DJ Screw, Lil Pat, Slikk Breeze & Jhaime)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x642a9bbcf3cbead721f4ae57bb76e283928b24c4f51e4a32f1c9131d94416dfc. Chain 2 (Bitcoin): anchored in block 960163 (2026-07-29T23:20:38Z), 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/USXQS1407404 — a six-check JSON result.