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 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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf891ee8b62f65382b00e68b8b7c4b440d10d8385950c0e055bdbf40825f41232. 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/750df8cf-cc11-400e-b1a7-0744b4805273.json and https://artists.proofprofile.net/proofs/artist/750df8cf-cc11-400e-b1a7-0744b4805273.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 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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96cf8d535e86091d38627849fc43ddf7a63ae4817fb2e9c628a9b9ab9c769cbf. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T02:01:41Z), 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/DER751075704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x562236029ae44ba176a69cc270c86df9694ca1fb81056a566c52cbd08af68b09. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/DER751075706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe07f3c1e76404f24babfce98f7314a48bd1756523c9df9712b248d1458098d95. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/DER751075707.
The Most Beautiful Songs For Dancing - Platinum
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c8cb4667d18c68a2c2e75ba6e8f863917f4ac50bc24a7c10e8ae71c06efd48b. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/DER751864101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4f1ff4659974e210170045c27d38eeee5af3da81da7a63266a9d07f268a07f0. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/DER751864102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e4863896a53fabf5c49738a5c9742d67b74a8fdb2332b57f91d3418add26915. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/DER751864106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaee293775c85ae95f96dd67561f326fea875be6e7cc28989f1b5882940fc09c8. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/DER751864109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ff6d6b5f48add7357a5c5a6c46c38375ad037b999e7dffc58393b2e84e001e0. Chain 2 (Bitcoin): anchored in block 959080 (2026-07-22T00:07:05Z), 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/DER751864110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x938fa90d3d1aff46b773bf8f2e9964990340a20de0c92ea9c64bc5180198539e. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/DER751864128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81bd18570380a68e8eb89ef4e265052f668faf1492408c5b8fb0e0eee9efa806. 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/DER751864131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9a8645c8d8ceef1fa5de44d05788ffd7f7483f6f417ea8d7516ee5c0d13e4c2. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/DER751864138.
The Most Beautiful Songs for Dancing - Pure Latin, Vol. 1 Samba & Tango
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a6442ef96a8705d5ac229a012c5ff65f0222b35454a1225a572871f24a2979b. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T02:01:41Z), 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/DEG411975512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8787900927e42f94b7dd05bdfe3bbb05271dedee861dbc5f7e77890b047bb4d7. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/DEG411975516.
The Most Beautiful Songs for Dancing - Pure Latin, Vol. 3 Cha Cha Cha & Paso Doble
The Most Beautiful Songs for Dancing - Pure Latin, Vol. 2 Rumba & Jive