Down Memory Lane is a 1949 Hollywood compilation film of silent and sound comedies from the library of pioneer producer Mack Sennett. Phil Karlson directed the film, with Steve Allen writing the scree
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 0xe2079180670aa47b92b29c4de5378f6b83a45f5e7eb91f2d44b9915c2d3d1a44. Chain 2 (Bitcoin): anchored in block 953819 (2026-06-15T18:31:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fbdbe98b-b24a-4e36-a94a-f8d495a4d5dc.json and https://artists.proofprofile.net/proofs/artist/fbdbe98b-b24a-4e36-a94a-f8d495a4d5dc.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 0x33037659ff371953dcb45a8950aa83db9327e72fd4fc34f1bdc7b3e792e6f4f0. Chain 2 (Bitcoin): anchored in block 958392 (2026-07-17T09:46:31Z), 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/QZES61916038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdadaaa4ecffed772c29557f2992939a405dadcff80f3825c90ddf3452249d0c8. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T08:22:52Z), 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/FR96X2193075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x520f18bd3642cc877d54400350a51f25728af6cd9d837ec054d247ccb73f7406. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/CAIRL2306301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fe88e776707c6915643bc994048dad232911f6264b8d87ae53391137499643e. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T08:02:12Z), 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/CAIRL2406305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c7b011876d224a5bb533504969d33ff61e0725fb4863d25dd8f96ea7dc47a4e. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T02:42:07Z), 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/CAIRL2406302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd83a57f97208c60f71e5deedfa455e16d12f97dd737e7d95bbdfe38b672a4bc7. 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/CAIRL2406303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2922bb2399c58aad0b726a07c73016e596d5b2eac6cb91c9a82f6382b320f96. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T13:14:32Z), 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/CAIRL2406304.