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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae77da611ee66295684ab23c53a5a7f30bd74d6afeeeebacd66576752a985f24. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3cefa91d-d4e1-4401-bbe5-e1077a52313d.json and https://artists.proofprofile.net/proofs/artist/3cefa91d-d4e1-4401-bbe5-e1077a52313d.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc310da84030df3e3d4f9e2ad0aedede70d515ebff3f87d17c506ba4e7c160b0c. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZES71945489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e7e0f2f32abb0c0660d805adf953507a47b8c3143c6720f561fbcfad5707a54. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/QZDA81821404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc74da4b0dc03eec86ae01a161a1dbb2b750bb97067809b9eeb4ec737eede981e. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/PHW012100352.
Bolo Brigade (feat. Apoc, Kjah, Sayadd, Emar Industriya, Blkd, Bambu)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x727b57d20f75a5ec06c514908ac5ad2d6f4ee53ee036d217e59a9ec53e912cbf. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:15:46Z), 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/QZES71945492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x967ff1da10766cb62ea973816e40ae1f2c75cce1eb285bac5845438f1d522160. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T18:33:09Z), 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/QZES71945493.