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 0xbc39387e372a5d5e121bf893b3f7a7993416dd3860a575296ce5d576b1a463b2. Chain 2 (Bitcoin): anchored in block 953710 (2026-06-14T23:32:42Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7dde7762-6046-4bf5-a6fb-10af5430af2f.json and https://artists.proofprofile.net/proofs/artist/7dde7762-6046-4bf5-a6fb-10af5430af2f.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 0x314ba12c0943985c2a93de378354ece8c39046efd77bbd190599c14935da608f. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/FRIDO2111662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30113d50eb6bf629e6e359770ffc480c8c573d826323a396ee79486f103412db. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/FRIDO2111660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x314ba12c0943985c2a93de378354ece8c39046efd77bbd190599c14935da608f. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/FRIDO2111662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6618d30c4ea086e970868ff407e1a8ee30cc4878e38a9da9a283a96b4e45ac7e. 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/FRIDO2111664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeefce801520ea0dbb17256363c6fd30b54784b5ff695ddbfe20dd24bc431cd10. 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/FRIDO2111667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6f65d6308825bdbbfae0725ba37f5f92ccb0e5262b5a11874c43a3d99610f20. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/FRIDO2111668.
Bad Romance (Genius Original Series Single)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03736d2462a7ccd67c0b8c94ba0224774b7ce907fe4ff4f4d802d0590ab21910. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/US5941407403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe13b31760c394bfb56010f2e6af38568214ce44ec9886e86d6fee2a8c716b7eb. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/US5941407404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c00629f8318bdadd2d9be43d2c0a9ef6356723d78edaa7555f58aa29d0b0043. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/US5941407405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83b2b346b22d7cbd8b07ef3304a752b6fa1fd1cb7d78f91cb627ed149813ea21. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/US5941407406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbfdc94928d4f412b372967732c2b77e4926992978074f5602fb7e24037e8c66. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/US5941407407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f0af1c859507520ae412317021e0226f2767b9b0f06eee4d75b8db3f267ef9f. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/US5941407408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a918f873ea3696a07a7b95a6ccbf68e685b7af18c1e4c2d617ab9922a10ed50. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/US5941407409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54362e76205c79efdcd3adf410718e67818929af2b449ccb141a6c01db9c4b16. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/US5941407410.
Partita No. 1 for Solo Violin "Double" BWV 1002 (Excerpt)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33607a26d66809e10fffa183fed579d4fdc89782e24a32e855666134b6d1dd30. Chain 2 (Bitcoin): anchored in block 957048 (2026-07-07T14:18:56Z), 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/US5941407411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x076ebaccdaebd150fb1e7f2e3a76cd86c9be92fb075e57a43d6e729efde5940d. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GBS8L1100068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20fffea8fe99497a8330d40e63c214fef29751f62682d2cb4ca90511c618bc4d. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GBS8L1100069.