Patrick Zimmerli (born July 23, 1968) is an American saxophonist, composer, arranger, and record producer. His work has been performed at Carnegie Hall and Town Hall in New York, Wigmore Hall in Lond
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 0xe71209630f33d22178c4abdc035a14cbf082288097309d3d10176275788d4a10. Chain 2 (Bitcoin): anchored in block 954556 (2026-06-20T12:14:15Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ad144e18-79e9-4a1c-8328-4bff20484d5e.json and https://artists.proofprofile.net/proofs/artist/ad144e18-79e9-4a1c-8328-4bff20484d5e.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 0x81060fcde320a0c752e6f4cb4c9b5db44c14be974fa69abb14e431fc42dca017. Chain 2 (Bitcoin): anchored in block 958491 (2026-07-18T04:29:42Z), 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/QM6MZ2517834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe25d1d7e3e27f57e6e27c48bee351988000993ad59cc2a7a8e3cc9a776e1620. Chain 2 (Bitcoin): anchored in block 957780 (2026-07-13T00:36:44Z), 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/QM6MZ2517835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ecfa7460a8034e94e3845c87358184462326a5ecc5bd531c4e3c42de7a4cc8c. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:05:50Z), 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/QM6MZ2517836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2649574bb487d83e23f379fefd3e45b9390505699ae51b4b925470550e361ec2. Chain 2 (Bitcoin): anchored in block 958880 (2026-07-20T15:30:39Z), 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/QMDA62506435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7e0e1aa5f665a7b3f4d887b48271759692fdbea5e3b40a013c149840d0153cd. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QMDA62506440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x530ec662dbc5cd80b1725b5151f935b511788e30c643e2187e09d814b516b01f. 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/FRUM71600402.
Between Dog and Wolf (with Scott Colley & Satoshi Takeishi)
Sun on Sand (with Scott Colley & Satoshi Takeishi)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ee577f94f6127fffdfb04d9fe2fb2f198ec78336e515f970b78fe4808dd823b. 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/USNO11600070.
Dark White (with Scott Colley & Satoshi Takeishi)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa121ca2b406f8f0c4eccf659919a471045cbcb15582fc0d4ef290385decbeb7c. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-22T00:46:57Z), 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/USNO11600072.
Soft Focus (with Scott Colley & Satoshi Takeishi)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5592616f04af6c92a1d5574278c439124129e886879b1e79911d2d3ff1b7d1e6. 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/USNO11600073.
Starbursts and Haloes (with Scott Colley & Satoshi Takeishi)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6e7213cdc7f04fe668e79eb3754f72cabea7050645002c10acc409290747abc. 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/USNO11600075.
Between Dog and Wolf: Reprise (with Scott Colley & Satoshi Takeishi)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92333106ee11fb9c063b2edc351403800767387634fdd08e230cf58a327ea70d. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T19:45:23Z), 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/USNO11600076.
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
Flash (with Scott Colley & Satoshi Takeishi)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65be667884f5aadbad79e8a3f11865361fbc79237f28892a00daee497fdfd6ac. 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/USNO11600069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0285b856e9c438bad42358a68996f1088ae5ed127ed2a4ae55c439cbd7187ff7. Chain 2 (Bitcoin): anchored in block 960199 (2026-07-30T02:30:29Z), 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/USNO11600071.
Through Mist (with Scott Colley & Satoshi Takeishi)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2f2f5a0380a9347e067792b6acc2e13872c467e482c9a7ce81fb3cf1fc113f3. Chain 2 (Bitcoin): anchored in block 960383 (2026-07-31T09:50:37Z), 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/USNO11600074.