The Mad Lads were an American rhythm and blues vocal group, who recorded on the Stax subsidiary label Volt in the 1960s. Their biggest hits were "Don't Have to Shop Around" (1965) and "I Want Someone"
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 0x2ffb4bd71cfeae5f39038c9c5c860be1a059cd7298d951046cc0e16b1e04a3e2. 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/188c9644-6173-4dd4-b7bf-3186406c30c7.json and https://artists.proofprofile.net/proofs/artist/188c9644-6173-4dd4-b7bf-3186406c30c7.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 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 0xfac2ca54b74276a3a594f5e3d0fa978646f0a8684c8a90aa13ce3b0ff1a0059d. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/USAT20402834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbacc9e7366d384dc2464f0d9b71b31e68d66fb347615a71a1d46dded8d8f3a40. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/USAT20402839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e50d1c96a8c468148083faff63bdba8e943aaa55553a89a78f777b0f6c93bfa. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/USC4R1905838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd96bcbdc80dc3062330414b640a84d7a401ba69cb70e126971ddd5c6b4b0c51. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/USC4R2553851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x010bdd0c630794d4ef499fb7a456eea1592defa6ef1086c4b0b69b98033f784e. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-16T21:55:37Z), 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/USFI86900237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2a3a5325085eaa7a8e88ce1525994c0f8f812cfb28dee82c7a86273a1e9fe23. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/USFI87100249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ed7230ce2462add8bf118d75a3a392acb90b3b6271b5378ebcaf9b6e9b59a90. Chain 2 (Bitcoin): anchored in block 958689 (2026-07-19T07:11:11Z), 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/USFI87300174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3c54ed5f0ae410ef147e075af3645673a174d25eedc95a61e0664d7c09a751b. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/USFI87300099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadd9e100ec3a45ea4b61fd73ba44dbf71ec63747d6b3cb9571af003aaeebe307. Chain 2 (Bitcoin): anchored in block 957620 (2026-07-11T22:32:56Z), 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/USAT20003969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3d9880f98dfaddcf43c05f4b591f9dc6ca3af14bae876cccfe7529b9df83cbe. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/JMA020600120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3aae112ae2e22e75dd0b8d9bbec409b74e906b32ece8238488b34f55d4e5bb8d. 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/USDNB0352010.
Soul Jazz Records presents STUDIO ONE DOWN BEAT SPECIAL (Expanded Edition)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04d59bf02bf6845612bd30a2627c7098260995bc54690607d8e78f0e68ee30d9. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/JMA020602592.
Soul Jazz Records presents STUDIO ONE Down Beat Special
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38d253764b777e05780bdec9516e1366a6cf1ce46639c94faf669f2a2adb50ad. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/GBHWT0500025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ef437e2cc8d46b7a9724f1d35fd8e503cd22a545ba43eb5f2f942c7b047aaf0. 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/GBAJE6900974.
The Complete Stax / Volt Soul Singles, Vol. 2: 1968-1971
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ac37ee29a4436155bf52b77e1a6091a3afa5555dbaecb50233218df3943ab1f. Chain 2 (Bitcoin): anchored in block 960099 (2026-07-29T11:30:20Z), 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/USFI86800161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8ff2b75e4d944bfdca1e2f497de8a6b62dd73df10c8f04d3cfb0712e412e68b. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/USFI86900114.
The Complete Stax / Volt Soul Singles, Vol. 3: 1972-1975
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97430671e6de09cd5b786bde86d490c09ea5adbb1a8df1bab439e29b673246e5. 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/USFI87200178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88a15498dd841f5c3b3000b5ab7a0c026799e5787e04ee35f927b5ae7c867c7b. 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/USFI86900240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67db71b9b3996e387d9bac1bc4280a8a93c4ab0dd4ac34de4136c7ffec3a261b. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/QM6P41469901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbacc9e7366d384dc2464f0d9b71b31e68d66fb347615a71a1d46dded8d8f3a40. Chain 2 (Bitcoin): anchored in block 960108 (2026-07-29T13:09:35Z), 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/USAT20402839.