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 0xe1c04d22ddde7c8254cd85e7682dd4aea44eed169e28776010ade9428abb6abb. 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/f52bbe5e-bdfe-499e-8472-d5877d01474d.json and https://artists.proofprofile.net/proofs/artist/f52bbe5e-bdfe-499e-8472-d5877d01474d.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 0xeec149d1f275c5dd3f410ceef1c2c1e4af9750dfe9a5fcc14d7d64d4e8c5c52a. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/USSM12007174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x895a674245896f770775d162f6c233e18b928396d00cea865305647f4616776d. 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/USSM12108833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9aebadc9a1630b0d0774b34bc511520310363419090fe1e538f3df2c76c32036. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:43:12Z), 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/USSM12202345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fd015f53c38cdd438c37062df2ebad0aa0482302a0eeaf41859cb89e170df43. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/USSM12204033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd66d77d8dea1b2a8ae9eaa8ce87802678d74247f216ab64827520425a9c76e4. 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/USSM12202344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x895a674245896f770775d162f6c233e18b928396d00cea865305647f4616776d. 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/USSM12108833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9aebadc9a1630b0d0774b34bc511520310363419090fe1e538f3df2c76c32036. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/USSM12202345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb74f97a0e89bb7588c5a75d38788b98785e46c7c7f07b1f9e4ef5b92f9c501a7. 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/USUM72018997.
How To Rob A Rapper (feat. Mozzy & D3szn)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf32f30fee828ca61b80e18b6841628e7e8270b360aa90d35c6b7fe8d1a466e9. 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/USUG12204794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53dbebc9eb2d2184da0c969d2e810331885c4634d7e2f49f37b41d05b68466e6. 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/USUYG1370745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7eb678507438d6485098aee4d22cc6e839f5a3e91b484884fc661fecc124b335. 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/USSM12100887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x454b76585a4a94956ef63fa97376bdde17cae3d0ac75713430ce3abbbab934e2. 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/USSM12007622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x045cfbcfa426caa5ab425eb0f8767c5efe66c9accbd9ca8fa7bc71ba4718d815. 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/USSM12100888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa54da3dbc6fd36cdfb1f69937c7a55766b906c9e2880ff78d2c940f667399929. 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/USSM12100889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x592e8bb5f2cbc3d0c7c747899794c5be1a14909a8203e7c8d54163aaa51f981f. 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/USSM12100891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf32f30fee828ca61b80e18b6841628e7e8270b360aa90d35c6b7fe8d1a466e9. 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/USUG12204794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12ded2b73b970b7df71fbffe5307b34e316620f89afa3c6f9ab659285f8c29de. 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/QZNJZ2435854.
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