Led Zepagain (stylized Led ZepAgain) is an American hard rock tribute band formed in Ventura, California. The current band consists of vocalist/harmonica player Swan Montgomery ("Robert Plant"), Guit
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 0x0a7592d1d1282a161e788934f8a0a979834d498d22339fafac72beab2e56328f. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c926b5eb-c92e-4ae6-a89b-2cc1a0315cd6.json and https://artists.proofprofile.net/proofs/artist/c926b5eb-c92e-4ae6-a89b-2cc1a0315cd6.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 0x2bfabbee4e8ef68d41dddf8f0f373d75442edbb0620ee09ba4b2f89da7e27de0. 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/USHM20553312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4e6a08c242e8a86f8baceaabee6032ae63cecfca923b52a6eff44d327e46a54. 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/USHM20553316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6590cf841536cafc9e3899cd5d1c3b006ff312e9024142cdbd4a8888827aa4b8. 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/USHM20553318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8a4ec077885f0e44af0676b7561cbafe4c4d2099a267dfe5a516c07e6222dd9. 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/USHM20553320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06cba12019920081da8d90a9d27a65c99e2ad49bcd5d4c382cf1972902f75363. 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/USHM20553323.
Greatest Hits Box Set: A Tribute to Led Zeppelin
Led Zepagain 3: a Tribute to Led Zeppelin
Live in Concert 1973: The Fourth Night at Madison Square Garden (Tribute to Led Zeppelin)