The Three Stooges were an American vaudeville and comedy troupe active from 1922 until 1970, best remembered for their 190 short-subject films by Columbia Pictures. Their hallmark styles were physical
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 0x76ab730252c370ac9aaf0fdc6da8ca606eaa2ba2a62f55be15d1aa5dbe012e67. Chain 2 (Bitcoin): anchored in block 953842 (2026-06-15T22:22:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f035fe73-7621-4193-ba6f-a7c81f1990f8.json and https://artists.proofprofile.net/proofs/artist/f035fe73-7621-4193-ba6f-a7c81f1990f8.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 0x9c6456836e6ed351fb9c31b3c59213b5f5753c0cac3f8d0f0860ff94e1aab9a9. Chain 2 (Bitcoin): anchored in block 959052 (2026-07-21T21:51:44Z), 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/USMC15907199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3ba41431c6838937f8803a53596a219ce5e4ddf99fc9ef235b8019ddd60d441. Chain 2 (Bitcoin): anchored in block 959071 (2026-07-22T01:31:32Z), 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/USMC15907200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x341beb2fecf7cf39f96847a01be43730a2a58c5b38519b9b8e71ce14dfbfac28. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/USMC15907201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe190ef700c305c6bb91f71676bf31481512856b9b45afedde96e989a78a6adf. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-21T08:35:06Z), 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/USMC15907204.