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 0x3487bd1bc917d3cef25ca96a0ccc92c7fe8bf1190dcb597e83b2ddf9320b3a05. Chain 2 (Bitcoin): anchored in block 953754 (2026-06-15T06:45:19Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/afe46e2b-8238-49f5-aafd-6a1ba1662aff.json and https://artists.proofprofile.net/proofs/artist/afe46e2b-8238-49f5-aafd-6a1ba1662aff.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
1,2,3 I'm a Gee (feat. Master P, Silk, Big Ed & King George)
Bay Area Playas 2: Raining Ice in the Bay
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 0x22909f58f9e7101152e6c21638c2f3bbfdf63f6b37e28cbc399f7000ca9018ce. Chain 2 (Bitcoin): anchored in block 960376 (2026-07-31T09:09:19Z), 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/USBAE1306084 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x158ad0405962085d56d4799a6a5fbe71c47fd3b6cfe283277272151638220232. 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/USA370947442 — a six-check JSON result.
Rollin Through My Hood (feat. Big Ed, Master P, Silkk the Shocker & Lil Ric)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf3a6b4cf9d30f49881497faf56a9f290a914f187cdddade7f00322bfa66d1c7. 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/USBQL0600172 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61ef769c1df954eb2498a9d05eaf9aaab0b16dc93296b8202ce0c4f00b35879a. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/USBQL0600173 — a six-check JSON result.
Some Of These Hoes Jack (feat. Master P)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd318054129b547e10fd60741c0915b4542c52f622c51993eda228ab2891ae0c1. 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/USBQL0600176 — a six-check JSON result.
Any Many (feat. Master P & Silkk the Shocker)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x921bdb9e0fb66079ead37310ba7b711b706f9a59e316b31f9b07829189dd5c77. 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/USBQL0600177 — a six-check JSON result.
The Ghettos Trying To Kill Me (feat. Master P & Silkk The Shocker)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2db5db82d87eca2e98dc000d7681e4006f0f7821d7000805a2ec09ca948071f6. 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/USBQL0600186 — a six-check JSON result.
Somethin Funky 4 The Streets (feat. Master P)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54a3939511b76a0d004790004a9529bc576950695dd2ccbb94e5604d498c0fe4. 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/USBQL0600187 — a six-check JSON result.
Bounce That Ass (feat. Master P & Silkk)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24b0c3bf2b4e4064012e2f4cb59b74b11f5f396f61cc0a5d6ad8eade75f491bc. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/USBQL0500052 — a six-check JSON result.