Michael or Mike Friedman may refer to: Mike Friedman (American football) (fl. 1962–1983), American football coach Michael Friedman (philosopher) (1947–2025), American philosopher of science Michae
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 0xdec0443016bf48fcc2248ed4c91cf9b8653d264a575983d87857e09084b4d2a7. Chain 2 (Bitcoin): anchored in block 953618 (2026-06-14T09:16:10Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1c4c7839-3530-412c-afc2-0dfda405f4b8.json and https://artists.proofprofile.net/proofs/artist/1c4c7839-3530-412c-afc2-0dfda405f4b8.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Bloody Bloody Andrew Jackson (Original Cast Recording)
Love's Labour's Lost (Original Cast Recording)
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 0x8aec013842d4cd4cfa2cf1034fc774de4bd78cebb5624340ef3bb8532c2a29b8. Chain 2 (Bitcoin): anchored in block 958988 (2026-07-21T09:08:06Z), 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/USSK31423418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b0e8a8eaca70f553049982bb0056d2ca09442cd121f1fe891e761b4285ce2ad. Chain 2 (Bitcoin): anchored in block 958800 (2026-07-20T00:52:19Z), 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/USSK31423425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1206a7ede436b3ff3e92b4467bcafcae679932425d1a174ba9c51f3c0e1c2bf6. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/USSK31423428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65784a0ab1effafbf1ba32f4dc98e0938f0397aee093310fd3ef751351277e6a. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T04:29:18Z), 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/USSK31423433.
The Fortress Of Solitude (Original Cast Recording)
This Beautiful City (The Michael Friedman Collection) [World Premiere Recording]
The Great Immensity (The Michael Friedman Collection) [World Premiere Recording]
The Abominables (The Michael Friedman Collection) [World Premiere Recording]
Paris Commune (The Michael Friedman Collection) [World Premiere Recording]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dea8dd2c422fe2abde767ab59057470eccb206faf06be256f896beae39ec8f2. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/USSK32042526.
(I Am) Nobody's Lunch (The Michael Friedman Collection) [World Premiere Recording]
Unknown Soldier (Original Cast Recording)
Canard, Canard, Goose? (The Michael Friedman Collection) [World Premiere Recording]
Mr. Burns : A Post-Electric Play (The Michael Friedman Collection) [World Premiere Recording]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1523c8d1d0364dabfd5a53e167c4a1dbb763c82b462a6cb0df7303a663940bd9. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T19:17:28Z), 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/USSK32243170.
In the Footprint (The Michael Friedman Collection) [World Premiere Recording]
Adventures in Reality: Songs from the Words of Real People (Mostly) [The Michael Friedman Collection] [World Premiere Recording]]