Avraham Shabsi Hakohen Friedman (; born March 22, 1959) better known by his stage name, Avraham Fried, is an Orthodox Jewish American singer. Career Fried was encouraged towards a music career by Rab
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 0xe747c2f0882ac800979b8b04ef65b3964e32a4a1a3cf7ef2ce0565bb4a0d6eb1. 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/fa491499-5073-48ee-a060-844d4d6ecfd5.json and https://artists.proofprofile.net/proofs/artist/fa491499-5073-48ee-a060-844d4d6ecfd5.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 0x9799b75b597dc156ab0f58dcc29efa09201bf6773ba8e067f7144e4e622fb74e. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZTAY2356868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x982857c993ebe5b792fd9de02337827832664f376bcbd8bd29ac6898ed267b74. 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/IL1012402417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe151dd369e4f2d5cf99a286d0d002263d6f6ce414df908ec66b661eae9902cf8. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/USHM22085980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1cec7fda251421427858c7737dff0d88003c9beeee728394f3c37999e06e6a0. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/IL1012000455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae2e30f6f0ec615d1d772e2435ac2e655410c9b2be2ac83ce81a3e3ed7d6c10a. 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/USHM22085997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ec71858681d1ffb611ee0def01c373f4c7fbcb886cb595e19a57ee4da22ff37. Chain 2 (Bitcoin): anchored in block 960106 (2026-07-29T12:41:21Z), 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/QZMEM2130132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52a2fadf9fb897fc61b81c7d9fd440ac8fa5d7aedfe13cc2700398ad328ae069. Chain 2 (Bitcoin): anchored in block 960309 (2026-07-30T20:35:49Z), 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/UST8K1646026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2173d59deeffd9b6cf92c3bc30637c0258b33638fedb8ffb356d1fa79a6fda96. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/IL1011125026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x865aa7ad99d967e8f384e0cf309bc9d41e8837fbbeb6c3785664c757f0049bef. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZHN82070103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b80856bf426c216c0fd989cfc9d856d3f55c12d45010bedf3b59de2bdeb4cd9. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/QZNWR2296876.
צמאה 1 - אמנים שרים את ניגוני הרבי מלובביץ׳
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf16409fd49a3f7c35deee9f860688a17cb54041d0ded87ed5883c3f8b6b89b1c. 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/IL1011126875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea0d848687c5c9b3aa76fa7d2b2086f9b065efa796600840ea578b179c3c89e3. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/IL1011126876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e29e78ef0ba55453d81bd7924cfc366c7c342f8df06d29cdad08db08e066dbe. 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/USHM81043960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef42fd539454d271061b6deb4f7ae6b06c14ff2827c398d94e0efe69471c1590. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/USHM81043963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b2f3a07a1b143966a96b913f0c45dfe69113d02e6f7cbf0d8160b097e2aa40e. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/USHM81043965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c7569f5901d84aed4bea0d0908eae9439347660cf4bccbb9e2252bec315ad81. Chain 2 (Bitcoin): anchored in block 960463 (2026-07-31T20:42:35Z), 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/USHM81043967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf99b75de68a1d0f08e6668dcdfd78dc8ef775888ed9ee80936e88d760e280078. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/IL1012100967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75c9e256d41ac1fc54f44d9e805f9db58403fdb3234065880771cd51e56bf386. 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/IL1011121648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c5d501a62777c3d822af02475d36be00d3816c52c17b43d1aa4e94b0fe966cd. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/IL1012301864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x777b9b9e5f3ad1f6efb6dc16feec36536a633c22c766be0e7bcf978a6e425763. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/IL1012201313.