Lenco may refer to: Lenco Turntables, an audio equipment company Lenco BearCat, an armored assault vehicle made by Lenco Industries See also Lenko (disambiguation)
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 0x098468ec4d4f11190b0798fe491a6c6bfbebbb08c1fd27727405a4798f8dbeec. 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/f0c05824-73de-4087-b77c-b936f243409d.json and https://artists.proofprofile.net/proofs/artist/f0c05824-73de-4087-b77c-b936f243409d.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 0xf560c283afcfa924092e59d683ec72d6596fd09a66748b02452fcd44dae69978. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZ5FN2447021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53e46f911862e1bc18141def396164e19d38a5ff845203c7e2d2d8571d1e8b5a. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USLZJ2453260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6341e860e27fe6e531d2b443e4fe3104b6119f0b5af907ec1272bc5f3b9fa46a. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USLZJ2453269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6accb9c1c6d77497a9f58ae9c2bba16f990303b94a5f7b5a7755ead887c1a093. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USLZJ2345187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdfaada7e15dcde3d9ee59e6f286e163e172f5424d52f82eff83ab99f5c0eef0. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BCY5N2200010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1c2c25d750c4509030e68842f9b049d2c1a9a93ecc4cb73cac1db6adbb9c435. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/BCZ0E2300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fc22dc788aa658f7d130aafab99919a3b1689ae7b54d79ee49fef00c35ba1f5. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/BKB8A2400011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f76df6335123b87ac0173b5847bfb3e2cffcb580b79826f82c44a5bdd41b383. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/BKB8A2400012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad94851c1279790df4d8e28d9c9579a16d96fa756b396361a2a2e49b59a4548e. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/BKB8A2400013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcbc68e3ea427a364c0f680a47ab666c10f47d04b5ef0dce0d1998ef63376967. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZNW72375036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7ace8ab56621d0364a87d4fbf85fe776029a8b771e1d445c586dbcdca32b788. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZWDD2376963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa419fe53794ad2d8eaee589d1c6f3f997c645b29c171541c0d2ae3c46d8dc979. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZWDD2377041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08849c3ea27ef3ab0bd2c0589c55ead9f5ca8e5c6de3ff9008fde6df479361fd. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZWDD2377079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ed5b0ab6e1856b6b110c3b81fe24fbe102f6a17c622507ef16bac09f6370c63. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZWDD2377154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b6c22b5872c5ec1234072e38e32902c8b9f43da430961141b186825d6d99065. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZWDD2377187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23e5fa93dd621e21dce854b514f603b83b077c93c2063ceabe0008a67d2dccd1. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZWDD2377245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd85f117c5d67a9d11f40b5a20aa9df4b1e1602b2011e66f7ef2b7f1063eaaf0. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZTV32304337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b86f2a4859bdd40a126810ad274301b058ccc382ba59995faa953693e5631a7. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZWDD2445647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x418d9af88b1488d8ad7130d5ee55821dedae915784d6eacdc7c568863decb018. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZZ8A2424212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31f2c956b07f43cc3278e1d18879feaba468cc77a0a2eb24000dd2ce07cc1442. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/GBWUL2485876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d55b5f369acd6b3d80b1311d8cb5b24d6bd1c8c40bb3ee69d68ad92fc8ced80. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZWV32473290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6709387d7991852e5a12b7ae2d97af004d80ee0edff56495690e1df8751b26d7. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZWV32455975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56ce75d1d03dc3c17b1bb490bd10f9c39ee6dc65186ee040c03cfb41774fc41b. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZZEC2301571.