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 0xf5997611948f7e39684ef6bb9636a6f261c2b1ab5a95af1d16aed50ec7421e99. Chain 2 (Bitcoin): anchored in block 953842 (2026-06-15T22:22:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f50a60e9-f29d-4b13-b648-30b12dd55c68.json and https://artists.proofprofile.net/proofs/artist/f50a60e9-f29d-4b13-b648-30b12dd55c68.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Jay-Z x Kanye West Type Beat - The Takeover
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 0x66da3ca5830d259128483a5740077fde010823277fe653f5403314515d1b6937. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T17:32:41Z), 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/QZNWR2094381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d16d2ca3f9cdd3dec031e1fe0e86f158207e5aa3572007773cd30c259ae2652. Chain 2 (Bitcoin): anchored in block 958736 (2026-07-19T15:42:14Z), 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/QZNWV2020001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41100a2a4cf91c02a57b0065acfc10de907958f1bfebb55ef19cb7791c7a3dbe. 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/QZDA72084893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf252d01c90dc46b743cbe52b8127b5f24b5e16e04bc6b063aa455aeafffead07. 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/QZK6J2006233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e8aeddd3c21ec2b8bc575590c1beedcfb9f19d9288f7a2f01d240434d360ecd. 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/QZNWS2013422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbad44f260ac427495c23212d7bb7f9ebd124e8bab63870a62fa3efae81060abb. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZPLS2222459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7484b153710e0cdfe8e4a844a38ec0ae521593a9112b68e168c4da43a22073d4. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:15:54Z), 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/QZRP42271823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bbac69bb05f9b7882e5ac5ae1b232d6914c46258420ba9b546001271671225b. 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/QZK6F2240157.