Brad Carlson (born June 12, 1950), better known by the stage name Bun E. Carlos, is the original drummer for American rock band Cheap Trick. He recorded and performed with the band from 1973 to 2010.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x603bca97ae4bbc61d986c469eb4b327d9d07428774d6e79ae1aae4d142b7a9fd. Chain 2 (Bitcoin): anchored in block 954097 (2026-06-17T13:13:51Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7b26c8b7-ef13-452d-9daa-9a21018be7e0.json and https://artists.proofprofile.net/proofs/artist/7b26c8b7-ef13-452d-9daa-9a21018be7e0.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Do Something Real (feat. Robert Pollard)
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaadc808749a66ee61191f0e8b1c45f2eb20621b04ef7a76cc83c76d266c9803c. 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/USKO11600724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeac3c3fadddd50ac78ed4ea5aa7e207afa1b4263ccc1988dc90ba80206653292. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USKO11601055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9e9d349b77475362d1390ac57365fb4eff0fd1e5129415d95c32034f8a4cd57. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/USKO11601057.
It Takes A Lot To Laugh, It Takes A Train To Cry (feat. Dave Pirner)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7d622747aecaf184783bb0944e1f0e662bec5345b752e979af045ea38000ad2. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USKO11601058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bc100ec216d94a757a3d934206330c2790cbae9e20a4ef34b544e783cb2da35. Chain 2 (Bitcoin): anchored in block 960506 (2026-08-01T03:50:58Z), 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/USKO11601059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47600f64750be7f6ac6986ebafb20d6fac328ebac94605e0b986d8ab284aebe2. 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/USKO11601064.