Butthole Surfers are an American rock band formed in San Antonio, Texas, by singer Gibby Haynes and guitarist Paul Leary in 1981. The band has had numerous personnel changes, but its core lineup of Ha
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 0x08fac69b6c636d1a21c7d412752d035c6dc89fca25d9dddc20d407f1e5a2f56b. 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/537eda08-ce25-4f8d-bdbb-9d9caa2067a6.json and https://artists.proofprofile.net/proofs/artist/537eda08-ce25-4f8d-bdbb-9d9caa2067a6.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 0x51167a956e069edefc84e99be49d48a74847bf8efe10d85beacfd6d749962957. 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/USCA29600428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01b19099ea368cfa24fc4bb5787c23268fb91ea4bac10c356d27362c83a9f1de. 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/USSFR1723903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfebcf4082af55c6159c18b70a3758de8eaca5ffa357bf15e126662bd138d5c78. 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/GBWUL2063410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x716b0c9f985e03169af06efd5e6a32ee7b4bd92bb31ee62ea5aa7b00d69e37e2. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/US2C60406849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5182e1b3f999c9a07680acfdb51e0a9a99fbc6bbe30592c1817693d15fbd6385. Chain 2 (Bitcoin): anchored in block 960125 (2026-07-29T15:38:18Z), 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/US9HX1000290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe52355a4aa026bfbb6deee5a4f233b9fda206d871056cd4152ff5148b28d8ba7. 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/USV351444616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51167a956e069edefc84e99be49d48a74847bf8efe10d85beacfd6d749962957. 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/USCA29600428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51167a956e069edefc84e99be49d48a74847bf8efe10d85beacfd6d749962957. 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/USCA29600428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51167a956e069edefc84e99be49d48a74847bf8efe10d85beacfd6d749962957. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/USCA29600428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22a50c44104779d2238d9d9a221ca57927879e6794bfe7a594e13d4e5547d3f2. Chain 2 (Bitcoin): anchored in block 960175 (2026-07-30T00:16:15Z), 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/USCA29200100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51167a956e069edefc84e99be49d48a74847bf8efe10d85beacfd6d749962957. 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/USCA29600428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51167a956e069edefc84e99be49d48a74847bf8efe10d85beacfd6d749962957. 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/USCA29600428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba97aca03f95800471e42973d0e65f8285b2914c0baa5b6f04e9764929b8de36. 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/USSM19701300.