Zohar Fresco (; born 1969) is an Israeli percussionist and composer, specializing in the frame drum. He is known for his personal frame drum technique, which combines several different styles. He is a
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 0x59f460cbffc99f9dd77f1321a486422df856a337880adbdebe7673accd109b68. 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/3647fb08-143d-4f5d-b2c1-9d058900805c.json and https://artists.proofprofile.net/proofs/artist/3647fb08-143d-4f5d-b2c1-9d058900805c.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 0xabf9988eabd09cc9651f5ae3d3996980f7edf168d6c58d6816fb82f7e0e934a6. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/PLB362100178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb56a684d090b8747cb81d17a48ca0d485e738981092c6454ebc86bbacafc541c. 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/PLB362100184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50875fb942f845fcc9fa024c5dd4d6126013c8fe1ce607b0864fd4f4436c8de4. 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/PLB362100182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6898d16efd12bbcfd0ff10f562c0e4b35b9cc798a1e7eaf6b495af3a7b28126. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/PLB362100180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba688caec6dad61112b6c47ddc449a5d159083b88b6ba6b6923e98c91b0ba1f2. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/PLB362100183.
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 0x074d274ef2ba23c4e39c79cdafdf18b8fb0b381b830a53b2eeca48b6d2587efd. Chain 2 (Bitcoin): anchored in block 960250 (2026-07-30T11:13:28Z), 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/PLB362100181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52c0356eaa11b90730594c4c91f0ba7d6ae174f22a51159b39eb96c49c003e31. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/PLB362100179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f2bdb9e4cee3c0aafd7efa9974075ee03853168b15dd9d9be8ad9fe44765608. Chain 2 (Bitcoin): anchored in block 960125 (2026-07-29T15:38:18Z), 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/PLB362100185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x397787216071b2e364dc50de857f1e6f0411f286f4fd808255d259c437715593. 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/PLB362100186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84cd021418d5203d7afeefbc37e44ef3d1087de0ec9bf6323702bd9b02a7d602. 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/PLB360600014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0f7b0afbf9782b17238efa480c141e192a386ef87fc9b972f936444fc1b33dd. 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/PLB360600015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x870d47de5a46429363ee1bd7fd705f6b84cd1bec021cda169312b4f9f18eae5f. 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/PLB360600016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28fdff4f623d1b5f823033fd7a3fd91e81504c818a3fc6f43aa04773807714c0. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/PLB360600018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52f68eba54e6e182ef039c0bfe6c1d0eaa11b444b18094fa85d445c94dfb1a66. 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/PLB360600021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf25b881710e9c31df368318fcd0267ebc781641ea312588f6d8de3158395834f. 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/PLB360600022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef1df53bdb59f8ff57356fb452297acaae3e1fef6fce88f2bfaf2980aabb9591. 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/PLB360600023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1696b542c60e7801ca40edaafea272bfd0b489ecfb87840dfa0df2c2c3b1f260. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/DEA891400468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73ac6525ab27b3ff0e84b5efd847613ef7864dc57e4f214105dcf95739947ed0. 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/DEA891301130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ebc222f066c213e9917b8ff52128ee69816f19433bf62419cac4ec99ce781b2. 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/DEA891301131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4add041e3a6433a39e0f18e3e06591e9f90b76716e157ae2f0ce0f9f6ca94798. 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/DEA891301132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9aadd1e26a8d4618246148ac5707283b8f0639a120d7610b2ee5801b9b016ea5. 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/DEA891301133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0e2df2b213085c790f9043e9d545def516d76b0f38c888b7a5867721636b5f5. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/DEA891301134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f49bf1d015311a2bcca2949ce59b6ca92481cb314068a1ed7bc2a2234974540. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DEA891301135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdec78c0fa1f39b3ab4bc000e156213895645c16ee68aea68a71c793924fb9c1. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/DEA891301136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x653c7ce255baec5811a86e63b9c8be53240130dafff0d86af7be3f6642a97c2b. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/DEA891301137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5a96a73e0bea5ced7495acdda969d71b5b4d44d9237a70aede4a7248c328f55. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/DEA891301138.