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 0x56413f5a7b9b9c899cc9bcee38cb71429d2f780441a0833b05e38542a62bf7a7. 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/c9df4dbf-005f-4f4f-82ec-d49cbcd25608.json and https://artists.proofprofile.net/proofs/artist/c9df4dbf-005f-4f4f-82ec-d49cbcd25608.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 0x272413a3d5890a052bc20b2abeb9a14de61f3fca3936ca3994b1d9967f46e643. 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/UKXN22330498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2989dc3e0c413d5fe1eec6f1c3b4a3c02849292c39593ca2374ee57973ab4d7. 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/GBUM72303670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b69403cee2d067353ef71b9819aae3b0d6cfde8d118492dcf8b5b37f8c82cb4. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GBLFP2040529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81e116ef182cfc2cb2bcf6d481a31da7625dcdd98cbda327cd7cbe4bbc6f9b6e. 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/GB7TP2100410.
Dat Way (Remix) [feat. Abra Cadabra, Backroad Gee, French Montana, Clavish, Beenie Man, Pa Salieu, Bandokay, Double Lz, K-Trap & DoRoad]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb860aaf533201391a5d2c7b2ba9ed40bef1afe6b51e9b6ca2e871d53502a75e9. 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/USZXT2350782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec2acdcea6a7a99687619a0001a7a539f59e10af7eeb24b74dabd17ddf76f992. 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/GBLFP2335355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f20b22f70eddf59ae35bb28fac68bf858769342f5c7a9ff94cf9216a1ba7520. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GB2DY2100929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f20b22f70eddf59ae35bb28fac68bf858769342f5c7a9ff94cf9216a1ba7520. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GB2DY2100929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa26fb428541819c7e7cb4ed3761dea8d5940fef0d3a488fc700d60df06388400. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GB2DY2100416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35df54aca1b83e5ddf02cf159116620b37ae00109cb41cf23197b52de6806490. 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/GB2DY2100659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x734bb9a890dd345308899bc8b3f42b97c11838551ac69bba555683036cdde960. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GBLFP2402541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x734bb9a890dd345308899bc8b3f42b97c11838551ac69bba555683036cdde960. 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/GBLFP2402541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbf79e15ea9a8cc17f93f517ad26e395a09271a6221622c4c2a567ab7829890c. 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/TCAEB1983360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x734bb9a890dd345308899bc8b3f42b97c11838551ac69bba555683036cdde960. 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/GBLFP2402541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x734bb9a890dd345308899bc8b3f42b97c11838551ac69bba555683036cdde960. 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/GBLFP2402541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa98b2f200b88ebc8015ba6041b8f93420d302e2a236aa70b91881afca234d674. 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/USZXT2455033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0ba4db10c88cd60404527edadb56bce134fe6b42f049433f1cadc654bb1e1d2. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/UKXN22049233.
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