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 0xc9c644788def182afffb1970f10cd2e8a286f1b90a63c5cd6f0aa69c30a0601a. 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/a311cf7d-4997-4638-a528-5b7f9f35b1e7.json and https://artists.proofprofile.net/proofs/artist/a311cf7d-4997-4638-a528-5b7f9f35b1e7.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 0x4151704deb59abd3affab4d142bf219df7d6f3c7a0ae33c5ec82b6340be583f8. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:21:57Z), 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/ROMSA0602628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a7b501a90f345042d1bcdc90cfd9c4934e3e09a57725f265c8cc29e01557649. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/ROMSA0601995.
Bhebha 2.0 (feat. Bepa, Double D, Jazzy Avenue)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1aff58240f8482f9298e8c7c78e12d9b73bc11fe502d463bc022660d4b2ae57e. 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/ZA56E2306234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9be10d92c4fe09c106ccdb00f879d6c8b8dd75927ccf124a4075039245a98bc9. 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/USQY50914081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x233429f320d148dc7865ea60b2b433a5dc81be1aa4392f7204f4b7f431ad67f7. 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/USQY50914085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4c969e00530248a7a1784621e1ef782d07837699264378c96c10a9fa5d431a3. 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/USQY50914089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x918cfe25ba6518c3f39c1d2bdde4ee76614566653125667c00b0cb7d958d25fe. 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/USQY50914090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29eb71a2d3deebd1f1d1244a22f877bac8d7e3eac2968642ee608624879a82a2. 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/USQY50914092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2a763fce3c297ec7e42af9fe2687aaac58187689f5c8850f1e3c94cfccd9a89. 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/USQY50914096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69128e5ed14e9db62d642d9e0fb742214a9893fa5b69acd7e3b8351af4abcdf6. 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/USQY50914097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7289b788ab011f7fbaea6141ae1af6355a2ff936f362388bd6d8690aaafbc68. 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/USQY50911201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37f09690284a15280d57fdb149adae9d0c47b8403d287cf25d923c061440a646. 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/USQY50911205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b59623c9b7812f7491e8f00b0002a45880b03086e255e63eb94ab6730be0164. 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/USQY50911208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26d2cd96cbf842b806920779a703fb315e97f5e97b2cc193756577b1b7b7f2f3. 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/USLZ41010252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x280c24de7d2bb7dda4a588c664825877a1d07c865b753d053aaad13150ae5f02. Chain 2 (Bitcoin): anchored in block 960456 (2026-07-31T19:53:57Z), 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/FR6V80926683.
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