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 0x1210056a17c95e5beeae2372a030569e01f6e0f823c741c4d659923330cd5c5c. 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/7fe72482-281e-4f4f-9d6d-07e23c2cecc5.json and https://artists.proofprofile.net/proofs/artist/7fe72482-281e-4f4f-9d6d-07e23c2cecc5.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 0x11d84bb6eebb34105fd78ea3838f0a609605b57dc5e02f4a638c0b123d472447. 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/ARG990900339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb6d25c8bcbefa7eedf8a58cdc19ff6e4faa52f788b31fa77f5b508684561767. 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/ARG991019899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4e801909ba2cbb4bb703244bdd3561c20c567af443df260d4e55f7f453c4872. 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/QMFME2312909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8971124f0629c224f6808348081138cbbab352b36d3a770941d279f12e0a7156. 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/QZNJW2197757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x196bbaac54d697993bad34a6f3a5e9dda85b0420217eb4186cb3c85f800cb1ff. 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/MX1722001156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc682056dcaf3030f42aaf3e798d00a600a393fb4d7e268f29771500de9c26025. 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/ARG991044898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ceb08a710ecb39f21807e3c7cfb3633edb65db3616d3adc7c4ddbcf798aef4f. 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/ARF101600645.
Yo Te Esperare / Deja de Llorar / Tu Mujer en Mis Manos
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x758ebf14efc99cf17ec1299695ea190a92ef814542015bdf97b0f3b72cd6d74a. 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/ARG991026156.
20 años de cumbia - Los mejores exitos de 1990 - 2010
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bc7fa52a0f894e15a659812bb7cf5679362b34076c792d5e0f29951e698e1bf. 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/ARG991005660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe67473490cb81f164eb29abeca8089b983c5fa326c7a388b79fadbe550ba6eff. 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/UYM121902801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8078509cfcbace7920b56c2ebf0231f61ee65389789e599ac276913d5e84743. 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/ARF102200407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d552d7e57208444d6d703d35485457302507b64444532c399cc365d83d25dc5. 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/ARG991043095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x126b370f71318f68c3f52c121b791fd8b9b78b0f2d6bad24223f32062b677458. 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/CLAA22300436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad268dbfa416de8c545992ceb78e3e2068b2925ce39ee0cf637cbc731b40369a. 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/ARF112400079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b106bba91947ea84469217f1d018901cd6a7abe3a8b3b6d003a21c6c7009af0. 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/UYB282317008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x656e8b1e80b149d317dd975274d8e603e898b4f8e31be13a7989a351c3af2261. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/ARG991020178.
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