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 0xe289074c60ffc2914d27fc74d271bb32290f5a5ccdac25643064b47332c73142. 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/5a5dd8ce-d8fb-4b89-93ad-01919ac438db.json and https://artists.proofprofile.net/proofs/artist/5a5dd8ce-d8fb-4b89-93ad-01919ac438db.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 0x1eed719c4ddbd4ad8a6d721723dda84b65c3fbab0d36f1d4111c3267478c1eac. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNJX2162514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06fb0abbbe0af9d0c9992db06c70ec31f30e5d5c79d3bed54193e5ad68e0ebe3. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZGLM1912250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84e910d525bd1d2357691a7e293800d1daf486214cb0c512fcc7ff7a8c290fca. 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/TCAEP2043502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80c75a8b39a19c2f093dfb6bc557b0b7a1e641f2927f52f9ad1796d31b6a15b0. 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/QZNWT2356918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35251ddccd3a4f20e3ec09259e630038fe7fec6157ad2d4d517881eb9b6f7fe8. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USASN2330198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x798907461bd8278b9c1b41b01ab96fa5a18c6c3687128ece095fc3529d38de35. 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/QZ9QQ2300684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c8d83ab8e172ad5b7dc388836b1e06ab172cb7ac9f9ae7b828aa85343687a25. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZ9QQ2300685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc35d97fbd1b5fc236a16f3d6921c83cfb1f2208fdf164534d5f3bffd6fd0acc4. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZ9QQ2300686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x013f045e010c92a2aeee9b5114e1de64294f0b1d93618634db445b7a59f26142. 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/QZ9QQ2300687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x155fc88fb3ddc92cc746654a27cb8b687ea9688e7e6548ad8c969fdc1ec24031. 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/QZMEN2378185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1959c8eac0423a7161df5180574345fcf68bb8b19efd4c148dddeaca290deb25. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZK6P2314702.
Spokes and Snapbacks (feat. King Lil G & Young Gizmo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd434aece953ebd8dbf1ca4d9c0c007e42dd31d6af2a44ec69d24795634881f19. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCADJ1762187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dfe732c08bb95dae215db5b7e60db7cb0c0d4e4f2cd20ec943f3cdba349604b. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCADJ1762191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80c75a8b39a19c2f093dfb6bc557b0b7a1e641f2927f52f9ad1796d31b6a15b0. 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/QZNWT2356918.