Benny Friedman (March 18, 1905 – November 24, 1982) was an American football player and coach, and athletics administrator. A native of Cleveland, Ohio, Friedman played college football as a halfback
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 0xb5ba1a54c723945d6177e7d08ef181a69b7fd136f068538a5aceb0917c2a075b. 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/7523a08a-13d0-4ff0-9ea1-0f503a1c7109.json and https://artists.proofprofile.net/proofs/artist/7523a08a-13d0-4ff0-9ea1-0f503a1c7109.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 0x3734af3545a5074dc150ac60eed50a89193f6ae3d55a909956cb0b90a5ebf000. 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/QZK6G2317627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca8e217da63e48b2177679fbfda1f68db6641f1417ddca61ba2720ec2f256e61. 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/QZK6G2317628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd734f788b6e09e1eba74c044a0225a1a7c0aa04968c186cd1ca4ab2557cc50b6. 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/QZK6G2317630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc763781204baa7e34164198579e05e5efefc4aa0940fa580016b0cedbbd59eb. 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/QZK6G2317631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23ed886c6dfcab6ec007e57bd39649e19bfbe49a5b5c1d5023b617ece882a5d0. 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/QZK6G2317632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51100754c9a845628c8ef2b8ecae77e03234ffe96881f50f0edbf9e7b5b317cc. 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/QZK6N2285491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6147f617a968e0c2cff085550364d609a7503053caf8307be8ef419d03467ba7. 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/USDHM2032340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77ee382350ae7ac89113af5ff3fcc4dcf294e3fdc994e007d4c91ecee2bd9928. 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/QZY7D2383007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77ee382350ae7ac89113af5ff3fcc4dcf294e3fdc994e007d4c91ecee2bd9928. 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/QZY7D2383007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70eae001a4ea398af2afced61a8687ca7e80fe57ac2e521f527a00d649d47ac1. 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/USDHM1827428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc47ba327ceb9c2e89658c5cef83c4b6bac3fc9f2a16d0b603d7b4e8dfe718b6. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T14:03:35Z), 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/USDHM1827432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc3e6e52979a699c931ec9665eb32c89fb673d43a6272f9b20894de66df0735e. 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/QZFZ42089132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fb4445aa8200dc1c2139a68633dc98a0d6ab27892d3a2c964b6c99ada6f99c8. 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/QZHN72459671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7ff6340f17a181d274c3f7c9b4c5dab0596ce9ae3e54ea6a39c00e731f5bb00. 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/IL1012100628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7ff6340f17a181d274c3f7c9b4c5dab0596ce9ae3e54ea6a39c00e731f5bb00. 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/IL1012100628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x892ff9266443ff217cc6da55495db22e8c2635ba07e46abc683df02e2ae13a97. 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/QZES52242199.
I'm A Jew and I'm Proud | Great Parade Edition
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49388c70ca934a17b28ee6ea2c44d092225112c107bc77e67409eb3e3fdad059. 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/QZK6F2488451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x238f69b19c9f2408fd80ebf315c1263bb253cbf3b688c1db094dea3f6e03eda0. 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/QZES62115344.