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 0x36f1504d40d60e7994d750db4dda3a87949b64cbda8773dd2a00779a72abdd70. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/875ab657-e4a3-4f16-a2af-ca9fab1cc4c1.json and https://artists.proofprofile.net/proofs/artist/875ab657-e4a3-4f16-a2af-ca9fab1cc4c1.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Oro Negro De Puerto Rico- Merengue Y Bachata
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 0x2f7243048152adaabc51628bd88e90f3f7c3c97762c141925c46c73512bba4b8. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/USHM20911807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca3e472748d0092dd48ff6eedd7a7ac3f0bd6658362fd8b832998747ba74562e. Chain 2 (Bitcoin): anchored in block 958686 (2026-07-19T06:43:29Z), 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/US78T0503821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f210108effa8d58d3f44f4c82b800633be682b4bd84f6759b178b26596a6ffc. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QM6N21502093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52cb8c04382e742caf6352790b5f918e78270ed0382f38a8340ae03135dd368e. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QM6N21502095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cabb9e128188bf3efc20fc2827750911289f5efcb7d93e922a6b8e8e4efffae. 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/QM6N21502105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf7469f7b53c374825523042c0128ec97fda6eb58eb2750c20fd38a21c053af1. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QM6N21502106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24b74eb2436d2534e40cdaebfe052917c91ffa3d197cc5645423b67f8cc4619e. Chain 2 (Bitcoin): anchored in block 957603 (2026-07-11T20:26:17Z), 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/QM6N21502108.
Oro Negro Pa Gozaa! el Shaka: El Clasico del Merengue!
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5877f3538421fa61d13e0d612564a1384e2bb81518c98303a926434160352760. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QM4TX2013592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa23648cd707509c356b410697179b2d071ec4de035e609068628c6d23e46a496. 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/USMP69561756.