Bob Clearmountain (; January 15, 1953) is an American mixing engineer and record producer, best known for his work with major acts, including Bryan Adams, David Bowie, Bon Jovi, Huey Lewis and the Ne
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 0xa41671978041504ce55bc346deaf4f29174630630d11cb5637c815a8ce9738c6. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/11544e1b-f85e-43c6-a053-d0b528867839.json and https://artists.proofprofile.net/proofs/artist/11544e1b-f85e-43c6-a053-d0b528867839.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 0x27fa2bd0d7dcf440608742fa97262eabc2c8c2bcc7c4f4cd97f30c1ffac7c091. 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/GBAHS9703010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3c4b0d6f0df699de6246758b656b6d4d46839dc060da36d27a31ecc38fddfda. 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/GBAHT9403732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8945d3475106815036cc0c760a5f8023b6dbe851c27f37507e7ee0bed8635cb1. 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/GBAAA9301255.
Adult Education - Special Extended Mix Long
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x000bf1f61e19d9e272ffffea08e2db82bad6e26ce496d79912783ddb3cd29897. 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/USRC10300915.
Retrospective: Selected Recordings 1973-2023
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8945d3475106815036cc0c760a5f8023b6dbe851c27f37507e7ee0bed8635cb1. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GBAAA9301255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76a8912630763d3f0ed00795684fc4001692f20385cec9825aca78a2f4f56f99. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GBUM71605685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25f8feb78db3b934be481fbe654ae5a041bc84c8c429c775367a816373dac7eb. 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/GBUM72403444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x367f5150e9bab1d5c7a8d6cc4ae315eea3738715dabf042cdbbe33142cd9dd2b. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/GBAAA8900312.