Code 13 is a Canadian dramatic short film, directed by Mathieu Denis and released in 2007. The film stars Roc Lafortune as Joseph, a taxi driver on the night shift in Montreal who becomes drawn into a
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 0x5eb5d53bf4122a599c6ed2242a792cb0bdbf311c16207f5ee50c70f7975cf235. Chain 2 (Bitcoin): anchored in block 954014 (2026-06-16T22:46:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2c6a50db-6356-4259-b272-7b32cb421311.json and https://artists.proofprofile.net/proofs/artist/2c6a50db-6356-4259-b272-7b32cb421311.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 0x0c6f608d2bc0d16088f3b3b7c0b8e6681c07111a0ca0b562180dc02c2aff832c. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/USA370582623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77d3458b73a1fafc1fb12580a2e2ecf426762bb349165c4b2f56cc4702d00800. 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/USA370582625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb3f47ab1bf155bb44eebf935af4141aa927113bbd39727561bd608173e6f693. 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/USA370582627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79518183e97394d3d8e3f536466d8ebe52185a34630cacda28cd37c6052d48ae. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/USA370582630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2784d5da1f70381be2366a9ab7a9414c5f2a479cc0af939a44d9d91fbeb53286. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/USA370582634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75ba77ff97b78ab45ae20211508be17dc994588fa9770c3c1abc283afbe03473. Chain 2 (Bitcoin): anchored in block 957043 (2026-07-07T13:52:39Z), 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/USA370582637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5025159e05a43b1484a10929943e0d2c850c77e97a285daf8d379267144853a. 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/USA370582642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97ad8ee4989b593e1a806b758d3ab7f518c32c83ab8361a978c65b675db69961. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/USA370582644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9f7ea05fabbc4b1116e9d1d83da6ddc82a47a97ac8534b6c54726b2fc59cab4. 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/USA370582645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x795ecda14d00e8e7b587013b657911d57e362828c1b62d5dfb8a721d3cade5db. 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/USA370582659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b43f5d6410464d5bc6e88c6858b8be9b7962bbab84125e42ec9a72fad8b37e3. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/USA370582660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91af10d78938dfbcd2788c898b117cd2b6b94d30557fc32db7a728f450a5f461. 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/USA370582662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb61133e8132def4c4cd3bb0bfa9ca81ede02c067a0831ec7aec3fb9ff19982e5. 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/USA370582664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b5d314310ca3838b54d0060608bd07d21e8e7a60fa15d25a4d38358d04d5c93. 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/USA370582669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0c6c213d3f447faeaf91315c705aa8a9a1c44aa938bdcf5b262b93f7bd8ce02. Chain 2 (Bitcoin): anchored in block 960314 (2026-07-30T21:00:46Z), 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/USA370582624.
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 0x1fef8a26f6833eafe80308b0f57e3cc8c3f5c431908be970eef708257145f92b. Chain 2 (Bitcoin): anchored in block 960387 (2026-07-31T10:06:30Z), 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/USA370582626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d3f1586be49da8f47bb2340db2849b36431b34354e7bca0b2ae8ea6ce1b0d08. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/USA370582628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x385ad41b305d0cc0666ca4ffb89b3e4484d7c465eabcc0686b9006d692d660c1. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/USA370582629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1282f766ce9259108eb8a3197daf2d407295697f395b355fe766b99e3df154e0. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/USA370582631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9e0cad5fb619994f0865741fc1ec6ae12b5f776f3d24a9e51bff3ca3074ba1d. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/USA370582633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39898b08436db3a66abde04b094113c16372ff28a8d394ceb64c7ca22edbff43. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/USA370582636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cd3cbdae559f8e0427cb9a622888499e851c5f5d24f796d6691185dce56b4e1. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/USA370582638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00af485f5043907318d8ee5815101f74df65484ef2fbd8283a034ae217984567. Chain 2 (Bitcoin): anchored in block 960506 (2026-08-01T03:50:58Z), 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/USA370582641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9358cc2452bab22f92170398e4ca20f4d688fcc017ba111da95eae30fbb1d7bd. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/USA370582652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4543925b0235f91d1b1bd5a3a6a8690702ef146635cf890e0ff3c22a3943d402. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/USA370582655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x821159cc1b42ac241a7f9991dc69ea1808ad7ba07ce8cac69a54e4baceb499ba. Chain 2 (Bitcoin): anchored in block 960389 (2026-07-31T10:20:10Z), 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/USA370582658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf090d178663565af49dd8e910346e2c94a12c20e1c96e014147fe9747e6e2264. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/USA370582672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d202994ae6255febbf62bd12b889feed00a625140d950eb08a7116f785e5f29. 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/GX3HH2234886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b5bf1eb06f51f5091cd7c6b3e0837be90392a258163109b36817bf6b9037009. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/GX3HH2234921.