Ugly Kid Joe is an American hard rock band from Isla Vista, California, formed in 1989. The band's name spoofs the glam metal band Pretty Boy Floyd's name. To date, Ugly Kid Joe have released five fu
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 0x401acfe488613c873892c1858b077b7b9e3c5d1b2c2311706de8f25f1d36ec6f. 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/5f6971c9-5e58-471a-bcc9-82a9c05d8b03.json and https://artists.proofprofile.net/proofs/artist/5f6971c9-5e58-471a-bcc9-82a9c05d8b03.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 0x5004c7c6eac3991b19feb4fcad852d186be6ff717a4fb531b0e7848a5f8e5139. 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/USPG19290051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5004c7c6eac3991b19feb4fcad852d186be6ff717a4fb531b0e7848a5f8e5139. Chain 2 (Bitcoin): anchored in block 957055 (2026-07-07T15:12:44Z), 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/USPG19290051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5004c7c6eac3991b19feb4fcad852d186be6ff717a4fb531b0e7848a5f8e5139. Chain 2 (Bitcoin): anchored in block 957067 (2026-07-07T16:54:37Z), 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/USPG19290051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x526f592bc7c5c265d0597a3e263d9572fdc614f7547301d13c59113ead0363a8. 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/DEQ121642352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc40607ea11a79838e25e6057921a4684169c7483bb39cedacd4dcd85e3f184b. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/DENV61001327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5004c7c6eac3991b19feb4fcad852d186be6ff717a4fb531b0e7848a5f8e5139. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/USPG19290051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5004c7c6eac3991b19feb4fcad852d186be6ff717a4fb531b0e7848a5f8e5139. Chain 2 (Bitcoin): anchored in block 957048 (2026-07-07T14:18:56Z), 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/USPG19290051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5004c7c6eac3991b19feb4fcad852d186be6ff717a4fb531b0e7848a5f8e5139. 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/USPG19290051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52e00b505b984a3f80cbad8d4409682fa3d079a6087d193017a3069768361231. 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/USMR19130361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52e00b505b984a3f80cbad8d4409682fa3d079a6087d193017a3069768361231. 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/USMR19130361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5004c7c6eac3991b19feb4fcad852d186be6ff717a4fb531b0e7848a5f8e5139. 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/USPG19290051.