The Leningrad Cowboys (also known as LC Cowboys) are a Finnish rock band who perform rock and roll covers of other songs as well as original material. They have exaggerated pompadour hairstyles and wo
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 0xdc25e42c98656eac98534a084cee01f3e44a4678b5c200d714c5c709866757e0. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/80b33a62-1e7d-4028-9f60-61e32a2197e3.json and https://artists.proofprofile.net/proofs/artist/80b33a62-1e7d-4028-9f60-61e32a2197e3.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Go America- The original soundtrack of the film by Aki Kaurismäki
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 0xb74d8863b051fa883f12e706d88539a1bd0d6d4c3b51e14617f307dc71b2cfa8. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/FIJKM8900160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8f99b7b640f2175dcb2d59ba145e9d847d76905196d51974508aada9ba3986e. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/FIJKA9201708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cf77e9077d866626f3c7304f632a9bdd2cb32c3ef01f2be57b3ae032fcd05e3. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/FIJKA9201711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f9e798aa01642d7439689aa6130b52329254e6a8c8cf9cce9ec0d9db16f934b. Chain 2 (Bitcoin): anchored in block 956404 (2026-07-17T02:42:21Z), 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/FIJKA9201705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bc408af804da01b5f92962ce7a42b8ea881c3503a7aa8bc44016f3f09bbb7df. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/FIJKA9200138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e4c2b2b4e89b67b3abfb150e02d1bc17fc63bbbaee4d70c0cd585715746e7c9. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/FIJKA9202001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x495eadd89e238ef0d4eec38a138898fe585adb793f745b8cf40ffabe845b4b10. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/FIJKA9305015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8347b20223fd9b674564570a37a8c4e0074c81e9f11f93aa30f267f665b2febe. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/FIJKA9305018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fa50b0299f29547024ee4a18d5a8b553a3a8e382e8c03a798280f786b899ccb. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T19:48:53Z), 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/FIJKA9201701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccb7dc7f80cf93387de11c7247bd6abe34a9c5fac665348c586148c8210d89ce. 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/FIJKA9400167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa066751c5b9e803c7821d24c355e5b01570ba55c0998fa0bfa0e14e960bcfd9d. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/FIJKA9400127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddd59b6dcb685798742fcd0a9424dd2979a238b2722bf1b65a1ac7eb2733a56d. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), 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/FIJKA9400169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94452db89f11d54d13bed925d144cc53857a889220caa53dd374beded7c6c383. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T21:20:45Z), 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/FIJKA9400171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9892ac0e3cfaebdbe75454a79089e7260e9af0fd3a1dd8af9560da7a489ef2b8. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:09:52Z), 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/FIJKA9400173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb06ffcc89e40eb9db9ecf0220918d8b51b644a53045801f8ee93b571fe09b06. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T13:07:09Z), 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/FIJKA9400174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8532634e5d038f0247b079128dcb5834f7ca01a11d27dabd1e539158e0a5c106. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T03:09:19Z), 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/FIJKA9400175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x981d4e1e4de6ac4e834d6e83a468c0f7a8c372e1f0fd7b9dd2239ec66ac91572. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/FIJKA9600013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3fc3a9f70ea1427e1294b244c66799bd7204e9e1087f965a22431c4f4439b91. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:57:32Z), 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/FISMC0600014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc600b1b2985ed15429e9e91077317b7d3bec5e4c8a218b822d9711ff8bb307e. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/FISMC0600019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47cced46ff22e5496ef0736ceff17386b7515b0f1544a55a58e67edb25c834e5. 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/FISMC0600020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12783b5cd8277f66e6089cb1519ff8715a5b132ee0791fa2a9beaa71512abd41. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/DEA451107440.