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 0x59330695112aee51b8ba1d8a9c423b31fcd38ea4626c70fc1414c383b39e3993. Chain 2 (Bitcoin): anchored in block 953616 (2026-06-14T08:58:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/19c4b94e-1742-4dde-9c82-0e2f7a2aa9ad.json and https://artists.proofprofile.net/proofs/artist/19c4b94e-1742-4dde-9c82-0e2f7a2aa9ad.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 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 0xb026fbc4215cb512a97a5c2a9a311f5bb4e5231137de10b4902b29fc049b3451. Chain 2 (Bitcoin): anchored in block 957774 (2026-07-12T23:51:20Z), 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/USHM22500187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf280d1a95e0fefb1bbe121cc492b067d6367c8e19245d38cf5abb233c5aa9048. 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/PLC062010690.
I Got 5 On It (feat. Numskull & Michael Marshall)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x628ccd3bf24c258edfa1a64b89b8a0be294b1ff14af383029951a170f5e015be. 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/USUYG1036505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4816d86a96fc5b75d989d401a7e44f63e6b346a0357328f8f807a63945c8f02c. 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/USUYG1036506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d9b3379657d8945bdd79fa59c499a791af7aff4e926316b04c6a0eb91026778. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/USUYG1036507.
I Got 5 On It (Remix) (feat. Dru Down, Numskull, Richie Rich, E-40, Shock-G & Spice-1)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6533159cfa420325219f056b3bf2da2301b79db1d0d8780e1ee04f76cc1509a0. 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/USUYG1036508.
Jus Mee & U (feat. Numskull & Raphael Saadiq)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c50d2af0bd93f00138e6ce74397c1dcf77144201594213d82b4fa92c8a057cd. 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/USUYG1036509.
Funkin Over Nuthin (feat. Numskull, Too $hort & Harm)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32fc75fc1ae2b83c010776f82d865ff562185bde6cfde0377970575a1fdf4972. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/USUYG1036510.
Welcome 2 Da Bay (feat. Messy Marv, Numskull & Mac Dre)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ae9062aeeb5807e82a8ae11bea5de34da22551c21f89faf0de711996b76b70c. 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/USUYG1036546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ff106fb6543435e44b940b34909dffac7d5b05aa151bdb1e9b41fdd34ae97c2. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/USA2P0716381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7ad7375b3674c1aa5e444beca5aa3f1a95ff238ac06d3617694d591d5ed5411. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/USA2P0716383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf280d1a95e0fefb1bbe121cc492b067d6367c8e19245d38cf5abb233c5aa9048. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/PLC062010690.