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 0x1aae05b8eec917e9bb10a9d619b31a053e9ff85ea0405f69c4b0f0b0e4fef900. Chain 2 (Bitcoin): anchored in block 953714 (2026-06-15T00:43:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/86b2af56-fc9e-43f3-893a-1361413e3b72.json and https://artists.proofprofile.net/proofs/artist/86b2af56-fc9e-43f3-893a-1361413e3b72.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 0xe10f85e7194341cdc23d15296f141644f92c44ceaed67fd477767403e9f8bba0. Chain 2 (Bitcoin): anchored in block 958639 (2026-07-19T01:18:30Z), 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/QZES82189028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fd0beca42da5564060548e6aa8e32b10f8b4d46e4a108bc7908c9b36b6c2d3f. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/QZK6M2217424.
Emeralds in the Smooth (Music Video Audio Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b86cba6c4b3bc119ad42fc3e8f23310cab203bcc34fb0da3d2ed8ce5eec42ba. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QZWFV2478388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b86cba6c4b3bc119ad42fc3e8f23310cab203bcc34fb0da3d2ed8ce5eec42ba. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T08:56:14Z), 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/QZWFV2478388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c2e602fb4d88a8c7f586a0788d3974ac86aab974073be49dca66bbc700ba090. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/QZNWZ2566383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc005407bd6897132d98b1407576e6110b5971aadc964ac95b9a88370b57cb207. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZNWZ2566384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58492ddb6cbe597eb2b9c747b2bf2f8b3f2a2f0e5df42322030b5ea62ec63090. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/QZNWZ2566386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x136cbf17897744fd8ae6cce0516472c6296b3c208677481db5acf51776b2bb8e. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZNWZ2566387.