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 0x76f1648feeb539585bca6f3af11f7b704c52ddf026d7999b9fc049f6e60d067b. 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/5f4ac9e5-26bf-490d-bd3b-630609bd1138.json and https://artists.proofprofile.net/proofs/artist/5f4ac9e5-26bf-490d-bd3b-630609bd1138.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 0xdbb3ba0fd885991f6f2115d6e0be75224d1678a3d1ae22e5f762967673f4e61f. 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/QZNW72377192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0c3cd357f0bf01e184bc59727a92f2917a632f1a403d9593a1ba69f39ef7c17. 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/ES71G2335520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20e2d8144bb51ae0932a42a8df0492434ba955fb241c34626ad3c6ebfd8374cc. 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/USWL12403226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac2ca0a12145ed414b1f8795b6f0f6d7390d59d7e94eb134cc1f0e71735f3243. 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/USWL12401929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2272859a24236e104da66b8394b437ccad542064b5095fc5fb0a8716f8bbf88. 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/USWL12403228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x469b2c25df797f88570a4c31b82329d1cc6286d27c4d367b2c620a8ce1dd5abb. 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/ES71G2434548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3d719d6b7f9a6d966e921a39fc9abfd4654a8481c3ce29a32481df56d38ade6. 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/BK4DA2426412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3340415228afef44ff6fd96abbacd8822e6b7de49fac7c5cf9de6aecef120cb. 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/ES71G2323856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8435f2a217c68d633beac079b02b1bfca9b09f0a3b4c3255f9c902f0cab28df. 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/QZNW72304213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f3af52acaf03c82fb1e10b5eb708b929e1a5dbb89044e7f9997a0f3e52f1b7c. 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/QZNW72339028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3afad1b15a85cc64facfba7523e7949cd46f6121a0525ea8206b520d76f72c70. 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/ESA012215228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e8268c122f2106aea122c77c2b8de8b53bb06f0d3d4eecef1f9a0ae046586d8. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZHZ32222077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd77421713ab8f46a92b25a3ac7f819b29f841f8bb0e2a9562dd57b6c5ec3d23. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/US7VG2496550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c42d1378aa89e9afcc75eb475b884ac313ae3586e24647dab11da025001e51e. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/US7VG2496551.
Cementerio de Amapolas - 2021 Remastered
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41c1dcbe42dafa2be4951c2c375a376692f3c2a6b6b94c73f58d3456af1f6ab1. 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/QZNJV2135983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41c1dcbe42dafa2be4951c2c375a376692f3c2a6b6b94c73f58d3456af1f6ab1. 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/QZNJV2135983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x001c7ca5f1ceeb478d1a6bdc1df6d0d8c731a2bf5e1da8055b94732373298107. 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/QM6N22581518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbb3ba0fd885991f6f2115d6e0be75224d1678a3d1ae22e5f762967673f4e61f. Chain 2 (Bitcoin): anchored in block 957048 (2026-07-07T14:18:56Z), 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/QZNW72377192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ff651f16554c1cdc30e37694c9cd86caa8fff4ebe635dfe48d161270f897643. 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/QZWV32533927.