Isabel Frey is an Austrian singer, ethnomusicologist and peace activist. She sings in Yiddish. In 2023, she co-founded the Jewish-Arab peace initiative "Standing Together Vienna". In 2020, she ran for
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 0xa43f826f0dbd81b01bf7b4f0d68902f2c895415e1248d03fb496dec2ad16464c. Chain 2 (Bitcoin): anchored in block 953772 (2026-06-15T10:33:29Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c54f016e-05ea-4b40-865c-a43497e4e0ef.json and https://artists.proofprofile.net/proofs/artist/c54f016e-05ea-4b40-865c-a43497e4e0ef.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 0x440e38e05022078ae277819b3f50c7262f7cc405b8cf3d8caf5063316f1bf28a. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T10:03:55Z), 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/DECW62000059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ba15b7cfeef7905cdd4bff74ab238190e897a76325ff4aabd35b02efd322fc3. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/DECW62000060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x354aaafa99d41b06a51005f847babdf85c895872a693bfb2c78511faacc3e379. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/DECW62000061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7bb2ac33c0d7eaa307e4f2df7b8a4ab64cae8b360ef93bcd2d1e262a6107ade. Chain 2 (Bitcoin): anchored in block 958567 (2026-07-18T15:22:40Z), 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/DECW62000064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe75ccb832ccdb26de8d9a405d74e53946fd7fd2bf7e0198311049707f1fd8358. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/DECW62000065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b36f46a01bd62157de6091e566a2b6e829f1bae337fd2a235259851ed9fd28d. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/DECW62000066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89435abfbe37605ee09d263a52ce75919970a85b870872f9f50a9d91388ba496. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:52:49Z), 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/DECW62000068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfae18a1ca9c4f8d707baff37de28841eefe9fa56d0fbcc8e1d924bb199722b75. Chain 2 (Bitcoin): anchored in block 958087 (2026-07-15T02:56:49Z), 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/DECW62000070.