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 0xb1b4abda575e0db0136a329e23b6190ed29324dad917eed51447aab14e740852. 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/cf0339f2-d16d-456d-b7c3-b06c7642789e.json and https://artists.proofprofile.net/proofs/artist/cf0339f2-d16d-456d-b7c3-b06c7642789e.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 0x9a93264cc8f0fb34cd6c87097830c85535d8518d2522eda44a9e626c8b1fce3e. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/USI4R0402540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50a1fa853f044531356a73ad44f66848ec67bd09dfde895776c18e612e6973d1. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/USI4R0402545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde5b91ac7fcf70df7ea9b392202e19ab970cc5ebac4984895ae1c7097ef61b27. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T02:24:04Z), 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/USI4R0402660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a46f4a7983538581051fcf42418ba35f2b178509d1d35876316600fda81e322. 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/USI4R0402665.
The Best of Japanese & Chinese Meditation Music
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x895351124b652ba6b2f6d1d96d00a6dde3d5e5c1a1863a8dbcc8bf659a7ee696. 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/USI4R0815796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a93264cc8f0fb34cd6c87097830c85535d8518d2522eda44a9e626c8b1fce3e. 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/USI4R0402540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x895351124b652ba6b2f6d1d96d00a6dde3d5e5c1a1863a8dbcc8bf659a7ee696. 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/USI4R0815796.