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 0x296d5b97345048307a32fefb7be4b91c3dbe9619d266bde68c5e3211747d8799. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/68a054fa-3ebf-4903-b1ba-8a6a425fba27.json and https://artists.proofprofile.net/proofs/artist/68a054fa-3ebf-4903-b1ba-8a6a425fba27.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 0x48679447a43357d26c53c2f675c2dbac98f8fae72d6242da6d484e052408b4b7. 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/DEZC62419497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b3f3c81793e945083c56ed35ebc85816cd9e0575e62722478366be9e554cf89. 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/DEZC62419498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x894cc83ee3c623235486e2c0a4c1feff438c34c937bf42ce2d856b9625542fae. 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/DEZC62401374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb37dbcac5e373d93bda208c23b83e8fe76cb53a655465a1ff559dd34762d3a20. 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/DEZC62417280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8368cc6c518d7e8e8cc59d365ffb1dac3c2b4dc98491272899eeead02de6945f. 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/DEZC62419499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d95c5f5eeec11b00b788bee279e0e04bc72c91a157790591e5a21c9d32c75d5. 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/DEZC62419500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dea69e54435e7754af8884f9837f1b2b37821b0df4cb348d9c4f2d5bc9caac1. 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/DEZC62419501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe134553d83b3e60122c51f3a182d633b94f0add4ec0a4850c947a3dd9209e69c. 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/DEZC62419502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57afbf58f403c0c165ee9e73147fc51abed2827f1abf6576d6eb5fb6fe8e8f9a. 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/DEZC62419503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85c77b5cda5118249a54fb277c82187e3d74808f9d2d41bc94999d6a44d0f906. 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/DECE72302690.
Prospect (feat. ÄTNA) (Matthew Herbert Golden Mix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fac3bb40de21ed4c84f467c2a82ca3e5281d5f7d7ae08a7760a8bb79a65e1f5. 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/DELV42200331.
Prospect (feat. ÄTNA) (Matthew Herbert Golden Instrumental Mix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf79ad8b2a88e335a31c97a955973b460425028d3dd18afea52d87b1af0bb7a31. 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/DELV42200332.
Tuk Tuk (feat. ÄTNA) (Jackmaster & Skream Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x841aad131625cc23b273ec01f2ac3c0099bebbe8ee28ba3dca056a4dacd35cae. 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/DELV42200665.
Prospect (feat. ÄTNA) (Carl Craig Late Island Mix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75d6f5490b8114ae4a044cb72df3ed5d410da64402cee55a3602768d28b2b6ef. 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/DELV42201052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a4f19b3e5e6e0aa2a3a8104f3e370cbc03d99dbdede048e931a7aad29a8d48a. 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/DELV42000791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x005434a5040ed1852db0e2576c8e49ce984ff68986250096c8c859f40ee51c21. 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/DELV42000796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75d6f5490b8114ae4a044cb72df3ed5d410da64402cee55a3602768d28b2b6ef. 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/DELV42201052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x841aad131625cc23b273ec01f2ac3c0099bebbe8ee28ba3dca056a4dacd35cae. 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/DELV42200665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbaae50b89a9c76ae05c8eba24af47bcd737c44c6b17d94f996f6cd4760a0bd5b. 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/DE1AO2210057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x549990031184c04b76cab12f8ee5da1f24e483df84d6a673c41b3d241f7f534b. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/DE1AO2110003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fac3bb40de21ed4c84f467c2a82ca3e5281d5f7d7ae08a7760a8bb79a65e1f5. 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/DELV42200331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf79ad8b2a88e335a31c97a955973b460425028d3dd18afea52d87b1af0bb7a31. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/DELV42200332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a4f19b3e5e6e0aa2a3a8104f3e370cbc03d99dbdede048e931a7aad29a8d48a. 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/DELV42000791.
Geld, Geld, Geld (Perera Elsewhere Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x839fcd5f88b781fdb0e03fa136a111912d7a3f7f6c84e44f2236f46f8e511199. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/GBLAZ2201872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe78d91c208fc91edd942ad7353c9487359df2e62aeba4570f4ba2ccd1e57a4e8. Chain 2 (Bitcoin): anchored in block 960099 (2026-07-29T11:30:20Z), 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/DE1AO2210058.
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