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 0xc72bd147f2886c6bd1fa4ab3123e401a5ca2c91b8ddf68397436314a7eaa064c. 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/bd7a6864-49b8-4459-8316-20f06e6ddd32.json and https://artists.proofprofile.net/proofs/artist/bd7a6864-49b8-4459-8316-20f06e6ddd32.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 0x67269c17fb2210a6677f425480b63ca9ee24a4d9c70712f070270c7bd622b072. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/GBKQU2282092.
Change Your Mind [District 8] - Full Vocal
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6b135e1f4023e0d7e8c2d273cb0ba4f4056449d3256af399133b52c964761db. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/GBKQU2245892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5d3022f7a3626b93acfa2aa473aa5e148ae3fbda222942be07e2fa982fb760e. 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/GBKQU2245891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6b135e1f4023e0d7e8c2d273cb0ba4f4056449d3256af399133b52c964761db. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBKQU2245892.
Change Your Mind [District 8] - Instrumental
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6c82b0b61c9bb4bc5c8aa224fa60bf43c467ec89c908f8155b16ed096e1435f. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/GBKQU2245893.
You Are In My System - Faster Horses Sport Mix
You Are In My System (Faster Horses Sport Mix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88589adb2c7b0ad8985fb81499a0b027013b6d793d8934de5f3a17102a7156db. 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/GBKQU2384659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61e3d6ba9f28c64c3a0671704f8dcc91982646ff155d71f29e6c8dc5f37b6c89. 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/GBKQU2380765.
Change Your Mind [District 8] - Full Vocal Edit
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5d3022f7a3626b93acfa2aa473aa5e148ae3fbda222942be07e2fa982fb760e. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBKQU2245891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6b135e1f4023e0d7e8c2d273cb0ba4f4056449d3256af399133b52c964761db. 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/GBKQU2245892.
The Way It Goes (Track 1) - Chris Stussy Remix
The Way It Goes (Track 1) (Chris Stussy Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09d1b7944f828f7c5ec893edf5eda9b751b7401f706815c71ce13d695a1c0a51. 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/GBBXG2000097.
The Way It Goes (Track 1) - Chris Stussy Dub
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c6c37b1b8d2bb03bb3f80039466db4629af0ca97da14aea6e49b74dbc894001. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBBXG2000098.