Fingertight was an American rock band from Martinez, California. The group released one album on Columbia Records before breaking up in the mid-2000s. History Fingertight began as a local group pla
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 0x776f89b4b15ca946aa9181593cec935cac0bce811f13baa5adfe9960edd8678e. Chain 2 (Bitcoin): anchored in block 953770 (2026-06-15T09:50:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9f938f6e-dfbc-4daa-8933-ed0d29b9867e.json and https://artists.proofprofile.net/proofs/artist/9f938f6e-dfbc-4daa-8933-ed0d29b9867e.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 0xdbdee2c146ad6337bfd3a840405080d3db9f008cadeb3164332e4f3e8e792de1. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T16:47:07Z), 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/USSM10215049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x194234c1939c35cdb96f18659d2db385d07ae17e4a61de07a8bbf91531055819. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T03:03:28Z), 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/USSM10215050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x807a9d312cdfc0917122f1530920b4a8b57794b916669cf0cf96401f1257b62c. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/USSM10215055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5e4774bf6a8e8ebf318ca8e269bc2062b44b93b7223ee963a0665e666d64d53. Chain 2 (Bitcoin): anchored in block 958720 (2026-07-19T10:53:46Z), 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/USSM10215059.