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 0x28cc1945d0402349d7c17bf8ba75558dadce59310595efdf1cb4943bb2ecff77. 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/b34b4283-499a-49ab-b442-4651384979c3.json and https://artists.proofprofile.net/proofs/artist/b34b4283-499a-49ab-b442-4651384979c3.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 0xc4b2b89110121319578421a927c0651a93a67c06fcbd719e82072f6f256ba7d1. Chain 2 (Bitcoin): anchored in block 956404 (2026-07-17T02:33:46Z), 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/QZK6K2024338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42a2e57a35d81beabdc1c378afa5516b5c92a5ba33727248367d4c7c6e09a48f. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZHZ52206833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8233e380adcc38fc0c659367ae6c5d62ea03943aadb9eb2bfaaafa22a62a30c. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:04:45Z), 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/QZES52348915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6a06bea068eff88c3528824f0555a78db199b05b3ce1745e2d219f8ded06c13. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/QZHN42395046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa43135c22499d619a20c0f03ade5d33da6d272da62d2da51d42ae40f8955700. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/QZK6K2024331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa504e39c2e455f29324a432cb40d54897117240a303171c12bc4313a9fe6ae42. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QMBZ92192184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46005f1636849ce4a69833865c8f7d62c424ddb735ab3224a0748b81facf0d76. 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/QMBZ92192187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c1f4b48a0b5a003690994f97b32d113372d9e55b1bd235777053dc7ebae4818. Chain 2 (Bitcoin): anchored in block 958069 (2026-07-14T21:37:55Z), 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/QZK6K2024334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9776418884d4f74e0c2d321ebfa3d2b592ea833c243f9e9689661565041d6030. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/SE6SA2119443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed2cc0bebfc936b3bcd0e788d8ca97df970e85d3102382c705c94e90b35680e1. 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/SE6I32493357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9280f45f8db120c563d5aa2fea750003baf91c5caad68d39c64262d11590dc9f. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/SE6I32493359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b82b16e2231bad15d7d6e6f2c0e004e5a49bb68b3105c5400d23e05eb7ecfed. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T10:50:41Z), 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/QZK6K2024335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31df89b223988492e28b09cf24e2ea23114d8ee6131dc07aa332ca512e94d8ff. Chain 2 (Bitcoin): anchored in block 959073 (2026-07-21T23:25:37Z), 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/SE6QE2405040.
Hemos Terminado - 2024 Remastered Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf7cfbb3bdc9381b21596f5d9fdbc446f2670de69e54c980c766d26f70f3e57a. Chain 2 (Bitcoin): anchored in block 957747 (2026-07-12T19:35:06Z), 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/SE6QE2405042.
Ni Que Valieras Tanto - 2024 Remastered Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd19e78e218484f3ec39da8ea95a8120f62475f0e553024f2dbacac64b5184e1b. Chain 2 (Bitcoin): anchored in block 957747 (2026-07-12T19:35:06Z), 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/SE6QE2405039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x764e611289e3f65a49c1ed4fedbf269a9857dd347ad4b46ceb166e631209bd74. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/SE5BU2481024.