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 0xef7c41772fe6af8e28a27b3dfc2aba7e773283e7e505b0fb36c02ebccbb9ff7b. Chain 2 (Bitcoin): anchored in block 953641 (2026-06-14T13:54:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/39e7be6d-2c85-45a1-8331-a00fd2f90795.json and https://artists.proofprofile.net/proofs/artist/39e7be6d-2c85-45a1-8331-a00fd2f90795.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 0xa85b60f3ea6e3bab9804db2f910a3d2e4105c1e25ebb4841014f140bf2b52126. Chain 2 (Bitcoin): anchored in block 958668 (2026-07-19T05:16:11Z), 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/NL51N1600014.
I Just Wanna Dance (feat. Sentimenz & Kaysha)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae6b88aa82feb7d6fb544fadb466d8ad9cb4650989c09e5f251c0c8f03cf3442. 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/NLK2U1700053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc859dbd43ace92fb2aded94f20484cf581d2608f52fa95775189a2ca438b6b07. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/DEY472473217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe809fdfdc2a7e2e828ea47e3a5c588a08dc6000a7a8a795f1eaaa17afd097fec. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/DEY472278649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e918aa6c91d9be7bcc1cfe9ea83a4242494339cdb4f4c108f538472f3395ea1. Chain 2 (Bitcoin): anchored in block 960183 (2026-07-30T01:10:20Z), 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/DEEC33501204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5244a1079126a60f33b58c3d1e796690265e1aed9be2c87bcc1100bf0507c50d. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/DEEC33501205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a3d0150c427182290178d6554dd45435ea28fd1c8e125238b99eaef41941b82. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/DEEC33501206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33e28d044cc9efec8a72cba8c6d52c3207ffaa3b4523ffd08201f182a5ba608d. Chain 2 (Bitcoin): anchored in block 960225 (2026-07-30T08:04:30Z), 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/DEEC33501207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x490d3be8a3afe16ab090da5bcba82b6a8c51b01ae383c46f9c423d845d7f909a. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/GBKQU2397731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfef1e6b9583406d2465b22570f2caa6e1c729ff80d3d8f3bb7126b715a79bf66. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/NL8FJ2500281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0277a3062233a053d26680e6b0e3caf10b1715087cb2b58eb0d83c6ea3ed2a54. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USNRS2242227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bf7eef95acb50fdf6f99830bf9a063e790bdae5c20a910e841403cec155d239. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/ZBSLK2200008.