Doane Ethredge Perry (born June 16, 1954) is an American musician, composer and author. From 1984 to 2011 he was drummer and percussionist with the band Jethro Tull and has also appeared on hundreds o
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc33276d782bf1b068f7f3a534b28e978e0db37d1e5a0a193067091e367d0bc8. Chain 2 (Bitcoin): anchored in block 954513 (2026-06-20T06:31:18Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9edcfc7c-3cc6-47a3-af80-247d0057a2c1.json and https://artists.proofprofile.net/proofs/artist/9edcfc7c-3cc6-47a3-af80-247d0057a2c1.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8020cb234a5c146f00dffd5ba29b54e0fddba3b744ffb9a2bd3b33a6608288b. Chain 2 (Bitcoin): anchored in block 960145 (2026-07-29T21:13:37Z), 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/QMFME1334586.
Guitar Heroes - Led Zeppelin Instrumental Renditions
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8af8e4f7f5dc1ebaae4cc0a5592174c510860f68e6dadb3f794b28df3a59c27e. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USA560742898.
Led Box - The Ultimate Led Zeppelin Tribute
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x067f31bbbb21b6c91d51d0232d28e8970172f98ebf4a61a55424dd06ee8026a2. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/USA560743601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6658ea763c04ec61dac0cf055bb1b0ab4b481ee62ffd7fc4ab42bc6ca1ed77af. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/USA560743603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9119f63f4182e13880e8670d32e771deb8d473e1fd3af942fa4a7a3237e2eda4. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/USA560743605.
Encores, Legends & Paradox: A Tribute to the Music of ELP
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cd238b570ef2b2d00423725c0d0e5ba0fe71ccc1365f85122718de7f68211c1. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/US78S0502605.