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 0x3802cfead839c49f6b4acf6122c3d3e346adb50547a347520211049a35011462. Chain 2 (Bitcoin): anchored in block 953641 (2026-06-14T13:54:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3ba47d70-205d-4e0b-bd54-a76e3bfd966a.json and https://artists.proofprofile.net/proofs/artist/3ba47d70-205d-4e0b-bd54-a76e3bfd966a.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
Off The Block (feat. Stressmatic & J.Banks)
The Block Brochure: Welcome To The Soil (Parts 4, 5 & 6)
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 0x7561234418bb602c8205ff5b87c1d2b0ac488424a1c52999ce94e4f6b0f3531d. 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/US4KV1300034 — a six-check JSON result.
The Block Brochure: Welcome To The Soil (Parts 1, 2 & 3)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42b6a1b1f1af0cac990d21765933670e3f23a8ba15494758599397a6c8adbbda. 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/US4KV1200008 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd7139ee1c268f66d9c918c91f294229359bbabd5588b5390b4e798c6af8f93d. 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/QZS7J2273700 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c43d28951fb019aeb299b9201afeb21459ca46c94e073c82a22461dc6f4a093. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USUYG1262177 — a six-check JSON result.
Main Phone (feat. Rick Rock & Stressmatic)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6f3966854ea81b3fc49b5c2cf9d3d99abb7ed97156781f037452e2c8fb96718. 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/USUYG1266888 — a six-check JSON result.
The Block Brochure: Jumbo Pack (All Six Albums)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42b6a1b1f1af0cac990d21765933670e3f23a8ba15494758599397a6c8adbbda. 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/US4KV1200008 — a six-check JSON result.
The Block Brochure: Welcome To The Soil 5
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7561234418bb602c8205ff5b87c1d2b0ac488424a1c52999ce94e4f6b0f3531d. 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/US4KV1300034 — a six-check JSON result.
The Block Brochure: Welcome To The Soil 3
This Is How We Grew Up (feat. Kaveo & Stressmatic)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x832b195f70d19b51a90f98692fa49db67ff15ea3cee75c057211bc12aa45d4ab. 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/USUYG1569540 — a six-check JSON result.
Million Dollar Dream (feat. Sporty James & Stressmatic)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x735278ec2c8e076228cc94c414476e0017f469591826bfd92803f56c48e05601. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USUYG1569541 — a six-check JSON result.