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 0x66998b6b0548c185b825b9d086864782534a02e16fae45c2ca08fba31faf9ee8. 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/a1a5d4c8-176f-4685-971c-d1d6519c5171.json and https://artists.proofprofile.net/proofs/artist/a1a5d4c8-176f-4685-971c-d1d6519c5171.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 0x37aa3adaee11567a98dc6d6c4183eb7654f8cf68072da45cc0e6a35dcbed5de9. Chain 2 (Bitcoin): anchored in block 958965 (2026-07-21T04:29:05Z), 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/DKFJ41500110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9652fb2e322f6b904ceaafd4ea4c0ddcb21632f89dc9636ce4de10db93a8a22. Chain 2 (Bitcoin): anchored in block 959026 (2026-07-21T15:38:13Z), 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/DKFJ41600143.
Can't Let Go (Sebastian Wibe X No Others)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb33ab377017db7d69627c995d3fff61c3ecafa6b4fdfafa0a9ec4d763e381c15. Chain 2 (Bitcoin): anchored in block 958720 (2026-07-19T10:53:46Z), 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/DKUM72100617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfea3b9a4855d16358db89eb020edd81da2164f2283966b8ef1235c792f4207fc. Chain 2 (Bitcoin): anchored in block 958392 (2026-07-17T09:46:31Z), 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/DKUM72200068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7ad9c5d12d2d165c0a4f6225fbb93a21efe23562e43cb89393fa9d56eafb7a0. 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/DKD212301001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d0201a1ca10bab185078908f17a3ff7f9a31da3319e9dc4121691301e8c3f4b. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/DKD212303001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c6cf294a7750d9f23190ded2859359e9dd57542fd1d3e993371cf0c27bbea13. 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/DK9H52300201.
Riotville Records Distortion Compilation
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc361e51636cc43c25b689bd5542df92da2fab2c699f9e448aa4289e1b2086a54. 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/UKRPL1900526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45c97485c11b42e4ab4ecb926e0d6ce70b84ccaf9f2ca95194af26ee4ad4181b. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/DKD212401001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2f9629fbd9905bb1cbe8f141489583630fcde1d8756106ba8c28a36a16b98ba. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T18:20:48Z), 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/DKD212406001.
Alone, Pt. II - Alex Skrindo & Sebastian Wibe Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc81ba3ce87a1ccc6942407f0f0aabbdd6fdef3bbb44e9bc51d727d40263fb78f. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/NOG841907110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84aab7e628d9973eb1f5c7259da6f385b0cae3e7e660d1e107d4587d68a8c8cb. 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/DK4YA2400172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf79a13758d59cdd88433fc49d353b5f323ad9db3ee760e52022787c5b7e75d50. 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/NLRD51959612.