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 0xcfa6c3d3985b37ab61311a022664aaa79c57ebbb6d4aa781a11639a467b9ddbc. Chain 2 (Bitcoin): anchored in block 953770 (2026-06-15T09:50:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9f9b1e0b-6b6f-4565-a07e-9609e6075210.json and https://artists.proofprofile.net/proofs/artist/9f9b1e0b-6b6f-4565-a07e-9609e6075210.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 0x1136f43f39540532467f18951a33861953d7bbc629a87a62332f8bdf3fbf7e9f. Chain 2 (Bitcoin): anchored in block 957650 (2026-07-12T04:18:57Z), 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/QZ22B3006883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58696650144cbef04d2e6f1e31b8fd0fc6fdb5f62c5d4c8c893a19e50dab1cdc. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZN882082249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x754863207595423d056b01a8d70bc0d70f87c0352bf085feb5490600d884af96. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/QZN882082250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ca0536b5befbaff7984c4ac8db8b9016687afdf5b52c13bd498ababc525d02e. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/QZN882082251.
KOHR Origins (Original Motion Picture Soundtrack)
My Daughter (Original Motion Picture Soundtrack)
Strained (Original Motion Picture Score)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x829bf2fefef9fcddca907bdc3aa889054bc90b74873e5730cb6267bf9d373506. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QZZ662327131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cc213c29f9660538566164783d57fe50f7d60b4c88de124b1f6321fd9aa78b2. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZZ662339616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69df6ae0ad92316a19463dd4d2b4b0f48cc3d3fed373eb9a6ee3f0e805969c70. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T18:54:46Z), 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/QZZ662474098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7eb378c0e6f67d1a3f9b31bb5daff57312bd277c73eb4d66c134f879dd43ed91. Chain 2 (Bitcoin): anchored in block 958724 (2026-07-19T11:19:01Z), 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/QZN882531255.
Blackout (Original Motion Picture Soundtrack)