Seventh Key is an American rock band formed by Mike Slamer of City Boy and Streets and Billy Greer of Streets and Kansas. They record and perform live during Greer's downtime from Kansas. The current
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 0x4fc6571878946f5a21c318f1591b344d7f29e4162921621c56e505e9b5e11082. Chain 2 (Bitcoin): anchored in block 953648 (2026-06-14T15:20:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/476f9799-a92a-43ba-82fc-f4441c1f30ca.json and https://artists.proofprofile.net/proofs/artist/476f9799-a92a-43ba-82fc-f4441c1f30ca.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 0x8b235e3e20e15a81890694e435f1e75700b83112be520a6d5e094c6243574414. 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/ITG271000325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba9267811031c08feaf558995e051bb2129244db6cdaadae04d73a91f904bb3b. 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/ITG271000339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe814d7694e85c15e9e90286f3b53387f5590508c950c4d54f55e50fbe39f6b5a. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:29:57Z), 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/ITG271000340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1393bd387a052d33bde35470f85633ea6156ac0b0cf23da5c8b475cf2fd6a50. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:54:01Z), 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/ITG271000341.