Tom Hamilton Jr. is an American songwriter, musician, producer, and the lead vocalist and guitarist for the bands Brothers Past, American Babies, Ghost Light, Joe Russo's Almost Dead, Bill Kreutzmann'
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 0x4c14f719cbdde98c56868e3e4ca5c2c2c4d7bd5ed7e7b673e397295a0448cd1b. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6dcb04c7-8123-4417-b906-e03f9e0dc8f3.json and https://artists.proofprofile.net/proofs/artist/6dcb04c7-8123-4417-b906-e03f9e0dc8f3.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Tom Hamilton Jr. Live at Sugarshack Sessions
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 0x9b4cee9b0416a078eda21df5e0ce72ee35c9e21ddd16a5e172265248f4a543b9. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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/USME32101231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ffd5832381752c46f5d91cbd8ef627817be72eff8911a815cb81c77cca1e52e. 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/USME32101233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3ed40af7e80758f9c1f72ccc2e290c9181d3de1b28568035ba8a9379f798743. 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/USME32101234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73ba526c0096edd71e0409c416b30f8d0b887aef70687896b003c0ec2fa75b7a. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/USME32101235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3936e92b1f093a52874982316518ca9ced3c8dcd4c1f3fd78f4199f5f6178238. Chain 2 (Bitcoin): anchored in block 960509 (2026-08-01T04:30:37Z), 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/USME32101236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e26650cc87bd0615aa8079b7a6de81cdc3f0f5411849a9dc05cfb7649cd3e42. 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/USME32101237.