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 0x6dae229a8afbcb5e4e78debabd07ef317bc0a7a669116ff3b7056015017e3ebd. 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/606fb4a7-da1a-4c26-ad01-e31167838097.json and https://artists.proofprofile.net/proofs/artist/606fb4a7-da1a-4c26-ad01-e31167838097.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 0x95cad10bcaf110827e7feb39e4244a61594599ebc3711842e02d7f133ccfafb9. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/GBKQU1512332.
Stereo Solution & Bass Is Kicking Remixes
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd59a10285f01d623b4df69032a64b3481e3a23d277e6363e66d410f22381e75. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/GBKQU2044684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb13470a49b5557a779d7501d1a6980a828a43f12897fccb6d325824b331a6b15. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/GBKQU2165445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b75fc41ff1f2974b9c9e60834dabbec12d05ffab5aeed1b543b8828b0e45e0b. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/GBKQU2273347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1456108b3d409e3952e31da3a92442c8456b706cbc179c95ddc5b9ea826d75b. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/GBLV62306349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7080b2f82e993b44a7b896ffe0ae210d83e3bdf578a8da3867a8174936d331da. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/GBLV62306352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31dafad769d7c44bff298a5933ee2212ba257a59cc3514483437ce7d4900a429. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/GBLV62306353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa2b7ec42afc85dabe7e841ff5295e3ca59bf41d89f5811f4ebf8222e1feb394. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/GBKQU2435993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb73fa26f61f9fc2d921c784fdeec2c49a188225767599047363c81933110ac3a. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T16:14:34Z), 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/GBKQU2474260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9327982161e1e87bd7289be807decf8b616eca5f1cf8291297e58ded141d5af5. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/GBLV62400450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba052f647aa38011234c3ee243cff3e00d0183604fb4f3065e4f76862c156a9b. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/GBKQU2514694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd86124c82c964fcce2e60b231d9495d4cc6e53332e45bf25748d4f355e8bf93f. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/GBKQU2527135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x867672f8c478ae0eadb81049329ccef5993c64fde6331de7707e571f934c90f7. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/GBKQU2536301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3136d7fe7e7246378beab880a0bb7159398958b3e7a61ac2add9351d5adf638e. Chain 2 (Bitcoin): anchored in block 957776 (2026-07-13T00:05:10Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZWDE2521114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb85e7f032669dbd386be3ae1eb76c4bc6c3fa9bcd3dbbee3aadbe8fbef903b8e. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/GBKQU2559756.