Chaim Topol (; 9 September 1935 – 8 March 2023), mononymously known as Topol, was an Israeli actor and singer. He is best known for his portrayal of Tevye, the lead character in the stage musical Fidd
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 0xa1f8154b8b9f6c6e4fb1647989ddfd9b334aa510b3dce85427b7141376fe4dd5. 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/9fe005cd-1692-4c89-bf54-02004cb46e70.json and https://artists.proofprofile.net/proofs/artist/9fe005cd-1692-4c89-bf54-02004cb46e70.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
"Fiddler On The Roof” Motion Picture Orchestra
Be Happy ! Mes plus belles comédies musicales
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 0x07b6c0de0dfe5b351892daaa98b7fceafd707b249c5029d0af2f49c67c7d5da9. 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/USNPD0801082.
"Fiddler On The Roof” Motion Picture Chorus
Fiddler On The Roof (Original Motion Picture Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0002056589264164bfaf7b53dce2af118ff4595fd6eef27e7982583e7f016b28. 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/USNPD0801087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55e6a0efd69de0d756c8fa57b366a83d14d7d8b9e54bd69c446385eb4c39a854. 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/USNPD0801080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79f2245f4909e43ed3abba1c96361f6fca8431196c954cf9c1425617ea70ec50. 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/USNPD0801090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef7c34dfeb36f0f0619b17019bd3dbd3326b8e0fa23a2da95f418fdc9402e23a. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USNPD0801084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15fb558191362f510fc46bb6cfe458c4526fa223b206ebcc1045aeeef50f9842. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USNPD0801083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf46994d56e6bb9bc84ef8b56781427948051f6a1ed635ec1d53749c39d94cba1. 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/USNPD0801089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x390839231329ef317da1c39403f391e475ab2974ef0b1472a68b4196a76d0763. 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/USNPD0801091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x898ac874af90c84e90a96b31ff037eb20a3a96771118b922d1faecf7fe809f4e. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USNPD0801086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0f4e206822998c16624b1d64a6654ed1e78713225f082f7f1c3cb0ca4246c9e. 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/USNPD0801092.