Dweezil Zappa (born Ian Donald Calvin Euclid Zappa, September 5, 1969) is an American rock guitarist and occasional actor. He is the son of musical composer and performer Frank Zappa. Exposed to the m
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 0x3fdd84e27020e4726ab7145aeca462921f5a74834196bc51333d81234138e440. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3a6fe01a-b3d6-405b-bd86-5b4b6821c1bd.json and https://artists.proofprofile.net/proofs/artist/3a6fe01a-b3d6-405b-bd86-5b4b6821c1bd.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 0xcc8e8a1b726facd2d1c5892aa7368a93e0565bb247bd905dd8eddbb3341d1bde. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/UST8K1527720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a25fb5bbb20a0117d7684ae0adab8e1e7a5a9156a3c3e641e6b1977c7160a0b. 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/NLC241000118.
Confessions of a Deprived Youth (Deep Fried Youth)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x291b926dd788bfdc439a8458554aed219103aa26c06f9be88ffaa5388b73876e. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/UST8K1867636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e86fe6790b82d6b03d822be88de6a097af6596e2324e60af5c63002bc2f2e7a. 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/USA560715718.
Guitar Heroes - Led Zeppelin Instrumental Renditions
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaeee0170474b2747e7b506a55263f06c7de79c50facea3f90ef7d1e75a024dd. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/USA560742908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3983423751f77c40f05f0d5225be080f804df53551abc47bcadf34408e725bda. 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/QM6XS2101991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cdc5e382bd66f0b735ce7ad3ac56798e422973aefd36d72ceaf0ea6086ad1a7. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/USJQK5200008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f4e054b12c0ba91568d9573913104eb6d673716737176c42247e87958d29739. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USA560865955.
Led Box - The Ultimate Led Zeppelin Tribute
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe18ef61115288d8b655dd3b4abddebb73bca705b4d1ffb96c64ba4e4518a61b0. 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/USA560743612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10b6909d0e796f478d4b9ce9d6dcd090e77b61215d264a1fc952e228d1067343. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/USA560702676.
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 0xdf74c3d367a5053cd65cc5acba5d55edb4be96db5d385f239647984e6b5d1ca7. Chain 2 (Bitcoin): anchored in block 960225 (2026-07-30T08:04:30Z), 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/USA560808920.
Classic Rock Masters (Re-Recorded Versions)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe90055dc1d557d0ce1fe13f8514cc6fc31456cbc31dcf48478b8912e025115c2. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/USA560743428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4324be1959019a49a1abff9a9fd917491a83e3e4f8c3bf7fdc9effcefe4dd0c3. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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/QM6N21454046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfc52c8b44402a4a0fc254f9177e870a8776627c69998b34b4daa84dddd2a2b5. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/USA370948179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca2685c8bb999b30e2642c6d9c2a270983134fc250436cb538daeb3cf6eda39a. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/USA371048083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfe32b35040a895fc760325fc3a16afb84d10ebbc5b27cf2b6113c0c3a476f6f. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/USA370576132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d259b5e5545a7707b2e4d17e867ec377e82d853011bfe548d80f0d4e246006a. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/USA560865964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x357df3b4ebedb3aa20a59f4bb49561f375b94e864ccad3416d02e6f1e97ea7cd. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/USA560748935.