Loose Buttons are a New York City-based indie rock band. Its members include Eric Nizgretsky (singer), Zack Kantor (lead guitar), Manny Silverstein (bass), and Adam Holtzberg (drums). It has released
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 0x69aafb4a4ae4af85a6a7883363245e64d2be208abc1f16983789658577cf2e2e. Chain 2 (Bitcoin): anchored in block 953614 (2026-06-14T08:40:32Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/17de9e79-d434-4fb5-a102-211d9c6a834b.json and https://artists.proofprofile.net/proofs/artist/17de9e79-d434-4fb5-a102-211d9c6a834b.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 0xde028337d313349ebd04c3e85ec30f8e72ee826764fc9086896cf63ed7c1a5c2. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T05:10:13Z), 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/GBKPL1974208.
You Always Look So Cool (Spaceman Session)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddc5f026cc5f70596b44ce6b4a754846c1c1c73f34a8b8592c594c56038c730e. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T21:36:56Z), 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/UK4MC2400174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f87b89753c9e4fdbb6afa41da7ee219a9e09c71fcdaa080aa76032c54500444. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/UK4MC2300261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8d2cee1b69d6cafc81dddf60ff8e3891bd1982f6eeae9ddadbe401ba8bad359. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/UK4MC2500241.