David Steinberg (born August 9, 1942) is a Canadian comedian, actor, writer, director, and author. At the height of his popularity, during the late 1960s and mid-1970s, he was one of the best-known
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 0x521f2838e62c5cd3a7641a8fbe1838fa6e0d9ec24cbaefb2c7eddac19c3bafa1. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8b4be9cc-3253-4c6a-9a08-af9e69e01c2c.json and https://artists.proofprofile.net/proofs/artist/8b4be9cc-3253-4c6a-9a08-af9e69e01c2c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Inside Deep Throat - Original Soundtrack
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 0x992fbaa5d33898bd75881b670702d396c9439eb7a0bc938cb7693cc3a6f9abad. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/USKO10501493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1987905c9bf3c3ea4172cefb0ea3add326415659f0d2c4ff44d1dfea9fcf5d2. 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/USKO10501495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7ce1c863ce145fa3e1ac6f4bfd1565d2114426237569094971eca0cc0b11783. 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/USKO10501496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e7467b21cfba8ae0fd866020e30ff03f09d13376a791910bc81cab2a72fdfa4. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/USKO10501498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5cb8442bace3cc5270309526fe53d607e1dddd3ffb9995e01d473fa9393da76. 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/USKO10501499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33d996ae1833afe9f74090e0d58c0d493dfaa490266d45d6eadcbb757e71aee3. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USKO10501501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10791258ac6b783b46e18647e1defca5087628d7c1721d8263d2c3a4fefd6e1d. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/USKO10501502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a3b04eff93dae0fa207fa73534f5953bcb01ec4132996df26bd3f2e169681d2. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/USKO10501506.
Crazy Psychiatrist (Live On The Ed Sullivan Show, October 4, 1970)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee64692fae9532f0f44dc27c534b2fc43190a249bc8f120bb856ccd04bb7bcfd. 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/USA560979302.