Lenno () was a comune (municipality) in the Province of Como in the Italian region Lombardy, located about north of Milan and about northeast of Como. As of 31 December 2004, it had a population of
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 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 0xb28f7979a74ac5423cc7c918dbc3ab5c83a882a5073eeb4087abbd5750f31be4. 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/7657e181-83d0-4da8-abe5-80931748486a.json and https://artists.proofprofile.net/proofs/artist/7657e181-83d0-4da8-abe5-80931748486a.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 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 0xecb020702e9099f3355200a0f801632e22e766f8050cf3319aa8741944713786. 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/USAT22006118.
Mind Made Up (feat. Kylie Auldist) - Lenno vs. Cookin' on 3 Burners
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeaca07873acc38c40132433e51df201714208cd77fdab24021c891ee31fa9fe2. 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/AUWA01600429.
So Electric: When It Was Now (The Remixes)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd51108eec3e1d8b41c6b78b41a9d0a1f70daa41705fca51f57e0bfcb5924920. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/USWB11304243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42468dbe4af9ba9945e1a653714ee8cddd0e4faa9b2ee37d4b064c1ad06035eb. 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/DEUM72005550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a99c8509c15744317de440446db3e0f358964a06227391745e30e99a4c80202. 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/GBUM71704938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe440cccf8c5749fab4449f397ae8b1207cdd962eb290bce5d6ccef6ee3cf3a18. 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/DKADG2100257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e173bfc88f7e49386df3b59807dd888bc6283b0a29c3aa5ccc57467addd7821. 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/DKADG2100259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f0105b26b177549beacc53f00b3235f08bc7f45e610750f642d4fe1dc453f92. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/SEUM72000983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x251eabe6e3e3a950798a0e18109e1f70f5214d20984eec7fa64892f6b72ae5ce. 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/QM24S2006309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d2a7ba9b85c0e810272dd18b4a0d18a5d52a5331862fe871453a236f24649a8. 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/USQE91500413.
Stressed Out (feat. Jarrod Allen & Lenno)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa75136318ba2d6513ed737dd68f0e1e3a2d9bcae117d3959d593163843091a56. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/USQX92205888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc417384b52d85362806926b06477cdad8cc48bd5565ae49529da22827a96c342. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/USAT22006117.
Love Like We Used To (feat. Nateur) - Lenno Remix
Love Like We Used To (feat. Nateur) [Lenno Remix]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x961cf54cdcf5319b278c9e4e9d6e82e784f0efe7d33d5f6c5e2bd5ddadd993e3. 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/USSM11610472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a43fa613be99a462987046058247211583afe7fc1f727985ddc36cfae34dd54. 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/USSM11105002.
The Wombats Proudly Present... This Modern Glitch (10th Anniversary Edition)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ca056215b379f471d095fd3d91ecda8e6cc4e2c13ce87583ff1f168fc303ef0. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/GBFTG1100076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcea42a4472bf996699387cb06d6105a5aaef5f5beaaed76cfae557fccc98a8c. 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/US83Z1212815.