Arthur "Dooley" Wilson (April 3, 1886 – May 30, 1953) was an American actor, singer and musician who is best remembered for his portrayal of Sam in the 1942 film Casablanca. In that romantic drama, he
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 0xbea6495edd07a88523eed4014cd99487001742b1da8f67dd2f47b5baacc67967. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f5ae43b0-be83-490e-b509-81a87408bb61.json and https://artists.proofprofile.net/proofs/artist/f5ae43b0-be83-490e-b509-81a87408bb61.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Casablanca (Original Motion Picture Soundtrack)
As Time Goes By - Complete Vocal Version
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 0xa41ea18d1d0c715bb4ad8fd6efc22131439678a8575c125cd1d871990bc7f6f4. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/UK4YS1315251.
Casablanca, (Music From the Motion Picture), Vol. 2
Casablanca, (Music From the Motion Picture), Vol. 1
As Time Goes By (Original Soundtrack from "Casablanca")
As Time Goes By (Hollywood Recorders Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbf18de52cc996760d69b43283f3275ce801cf74c0c6f541e571e0c4448d7690. 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/SEWDL0363222.
As Time Goes By (From "Play It Again, Sam")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8c4d9cbeda55bbada7bb678ce67ed2e7e77d7b4eab27b83b707ec64a6f6e24f. 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/FR8X00600698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbf18de52cc996760d69b43283f3275ce801cf74c0c6f541e571e0c4448d7690. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/SEWDL0363222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae22f2b3133770e15685a3966b7b3d7525ead7515e112fff066675bd1d40f823. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/DES381813004.
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