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 0x628dff082113170f8f98f6e04fb4aab679e8f851ef68a72504931af769f3564d. 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/cd5c4775-13a0-4a52-8a75-d7bf90f1651d.json and https://artists.proofprofile.net/proofs/artist/cd5c4775-13a0-4a52-8a75-d7bf90f1651d.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 0x6ec95091139f74c390e91e57b0d0f409c3608faad53aa05535df4857048bcc14. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T21:08:39Z), 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/USUYG1159904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacba1571064210aba0c59124159a152d4e0d6e5db6b0e91d4df6b9947720a720. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/USUYG1347835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc74aa4d28f285d86b4dd748cb7493d4a0fdc79ee26a4d6f46f760332bf3c7d1. 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/QZAKB2422811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96a614a87ccb63899e28e42b9a1fd03e9cb2d683ac58ef8c84d970f799f92067. 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/QZAKB2449057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ef2c780359221de7580915b96556682bf65550e6628802b341b51eebfe5f8ef. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/QZAKB2449060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fead779745fb60cf6d9abc57e1a4592e664a0f5d9d5d0f884b981389df09787. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZAKB2449061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70bff33065754405672a7c4a525ff6fc04202db6d90f7e92e485f132c776033a. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/QZAKB2508588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8fc4991825504356cf2263c8108993f43ef1f61e66f4d704ef9a080b55d7695. 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/QZLBC2100044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8acacf2b1869552c03488fc6f0293f81b4a701dccb8ac20cdd8b50c7e9e83640. 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/QZLBC2200292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8fc4991825504356cf2263c8108993f43ef1f61e66f4d704ef9a080b55d7695. 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/QZLBC2100044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8fc4991825504356cf2263c8108993f43ef1f61e66f4d704ef9a080b55d7695. 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/QZLBC2100044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7623d3c8e3349984616e748f2f0fc01e2e38ee942b42856698f3461bfe32059. 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/USUYG1281446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3155c18552511fb4e4e187fd43a4d17bda3e0d45d204e3a9ec19df8f6929c03. 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/USUYG1281459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa099b04c441684012202ff34657b379ee6fcdf8ad6e43cb74a00768cbc80eaa3. 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/TCADX1809759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2a9081cb7b3d267aec7338c14e0cfec985f7c39a924b790e6fc91b12681d842. 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/USUYG1225906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2c9c2079821a0386c7c85b0b9f812b01cc34986b1d0189041a9152bf4d0c7c7. 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/USDXS2203234.
Stressin (feat. Boogie, Nick Grant & DCMBR)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6bcd8e7e530ae79803e47f3b22ec7389168d4291d517976283065145762e1a6. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/USLD91717712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf6abe02bb95ed341e676f7d92ba4b8230ebb7b7359f8ae4fc8c9a6fbb14b75f. 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/QZWFV2479756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b9923e80a2a4b10f2b663b3ef82d0236317b6d8e6941749d7c1400219bd4eb1. 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/QT3F32499759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ab0333667983cbac82d61572d1c598ae5ef7a7edd28739643631cd9489e977b. Chain 2 (Bitcoin): anchored in block 960181 (2026-07-30T00:53:20Z), 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/USDXS2008477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x505318191ee11fa3f0dce0a2b152dbdbcb8ce4c952e93bd638d154ac0e14c1f5. 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/USDXS2008486.