Sugartooth is an alternative rock band that was formed in the early 1990s. Timothy Michael Gruse (guitar), Josh Blum (bass), Dave Fortman (guitar) and Joey Castillo (drums) formed the group after mee
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b7bc561b0f118437b86e965094515b3d3cf96cdf3ce5c7805d19535ce3fa296. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/cb5f2802-7cc5-4248-a1f9-4736f52f6be2.json and https://artists.proofprofile.net/proofs/artist/cb5f2802-7cc5-4248-a1f9-4736f52f6be2.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca9f1359b67dd1f7fa172d50cd3ff43df17471b2ee1d716ee0fa5145f5c4bcf9. Chain 2 (Bitcoin): anchored in block 958493 (2026-07-18T04:34:53Z), 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/USUM71713850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x211dd09f7138314e9a06c00b84cd12cf03e7634300db43a87dfcbde08f80c8ec. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/USUM71713851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x352fd7aaad4bf0c5587ff8c89344f7e4ab72bf2d07d47a8b06234f0a6577e777. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/USUM71713852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f7f91bce1e61ae1e36a81eb133c9dfbaae31c86e99839ed980b87019f0d7d5b. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/USUM71713853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86e9177f6b7c00c3ae88ca8035cb45b74882ad5794722d24f3f41c0799fd2da8. 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/USUM71713854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9437f873fc7b00608876a5590eba4c375fc256c594bef0698a5d56f391d31a7. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-20T01:34:02Z), 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/USGF19700601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6f34c3c299d6c022da17eb0c88658d2094d499d21dc14710d9cb58f7c21e062. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/USGF19700602.