Lenny or Lennie may refer to: People and fictional characters Lenny (given name), a list of people and fictional characters Lennie (surname), a list of people Lenny (singer) (born 1993), Czech son
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 0x48fed775f887fae1c8f98774ed0e450debbef21ba41d79066bd2d3c45674a457. 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/ecb8b98b-70dd-47b3-8ded-f1dcc5b9f25a.json and https://artists.proofprofile.net/proofs/artist/ecb8b98b-70dd-47b3-8ded-f1dcc5b9f25a.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 0x57ae44d8d8d110d19fe847a9437da1081868b8956a255e735f0b35080369d6d4. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/CZUM71300055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x141c84994527a235856b0c31b8a1a512196bc76223854fd152d2dc01e500c096. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/CZUM71300054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa0d674ffc10039275487cf5cdf09c6b6a6f8630f5155148928ba1e6d42e266d. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/CZUM71300043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2edfa45da454d5ac124a40f28dfdc5a87fae2ef72dee0950016df78fda3561b7. Chain 2 (Bitcoin): anchored in block 958830 (2026-07-20T05:30:12Z), 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/CZUM71300294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6f742d03450925ff620b59959d1e9b6c8e4659b53139107ca7998d17aa91e62. Chain 2 (Bitcoin): anchored in block 957805 (2026-07-13T04:34:37Z), 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/CZUM71600227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x533523ebe9c3449ab15ff950388554d54e6a9fb222c574fd52b33d03c3e9d65c. 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/CZUM71500105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45ecdb0f666068c843e53422798bccb4be677b0dfc899dbbd6467894e2064122. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/CZUM71600218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe03ac81b4f037a927737fa8ed8211365be1f7f13960b2834c0519521e71299f. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/CZUM71600197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa1bf6952f80a101e806fb7dc88f0b68df2b9b6d738aa4bd9a35393d83f4263b. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T21:09:36Z), 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/CZUM71600198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e2f38931461f5ff712745695c6583bd25eade07bdc594fa6200bbba759ba132. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/CZUM71600200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x407b14d819fb2ce530076a12acd660f3073c9d20d7d883654a4ea9fc423d95d4. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/CZUM71600201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6464baab8fe6046157871ad98637bd99eba7284055858d294769d62ddc2ecbf0. 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/FRX201584138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f757290e7ae1dcd8370f6fdd3dce2efbb4fd7275a35dac6e6ac675eaca25bfa. 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/DEUM71709546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb77dbc1b46ba0d16c1fd5f9f9e781976b1ce890fb413056fecaceea06b2ebce9. 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/CZUM71800692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25a420110aa86fa012db7c9f60c84a35f9c4af6e8524e1085a1f66e9ae4db97d. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/DEUM71901937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd02a67d1edbec5c0f898b96abe5c966c520b83b845310c73a5aa1877ee91c9ba. 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/CZUM72000024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x567fe292059253d4596eef1dc62947b8e479d2424ffe1418aaef40fb081c9a60. 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/DEUM71800740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d0bfc74b85b64bb5157ef9f0550eec5f60af71485d0e3b4d269884d6d354ba4. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T13:14:05Z), 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/CZUM72000254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5d663c978c7f4e8770e42a38db8e3a5c75d0686cc1a43579f4c956faed63503. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/CZUM72000226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5024d353f4b3e8046c41c63a9354bf1e1f2fff8570757ec8499192a4c9074695. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/CZUM72100899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5915e6b11af880c265b7879c9e693e48a2fc9ac9513c3218a792b0b25541cc77. 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/CZUM72200656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc118f8ac6228e280ff31ebf8cdc1fa1df6f61af94bb7822a0b6a86ff77bc9bc. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T08:14:15Z), 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/CZUM72200797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x673227fc0c62f55dc5d1d5a0876b99e1f8a63a4bde08c19787aaf09a59f87b97. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T14:57:46Z), 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/CZUM72100474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05fb5b4df30d4ea2a458175a41939038643e37fc92b35a1697e11010e8bf4da7. Chain 2 (Bitcoin): anchored in block 958988 (2026-07-21T09:08:06Z), 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/CZUM72200798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e4fda850c81de67c92815f0c4f823f4dd8fad12f86a01a4b04ba307de34935c. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-21T21:34:21Z), 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/CZUM72200802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x950d27db045da1178480540cb76dd33ad2e625efbd75de1ee9d8edad45f6cc9c. Chain 2 (Bitcoin): anchored in block 958407 (2026-07-17T12:08:48Z), 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/CZUM72301074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x950d27db045da1178480540cb76dd33ad2e625efbd75de1ee9d8edad45f6cc9c. Chain 2 (Bitcoin): anchored in block 958496 (2026-07-18T04:43:53Z), 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/CZUM72301074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x793b20a82bbf74a62e526e7b597c473bac16f5d761d6bf1318f62a6242efc86a. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/CZUM72301166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadbc047c4dd4532e3658d49379f241bbf9d4329b258a6cf418e9e7e29d317791. 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/CZA232200851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc467beeaa8f6ffc4da973285c6cd9f2067963c31abd4592cf656ff5daa4d9a2a. 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/CZUM72000932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a8cea5cac2df8e64f6e3d4f4862475c2f0a02cfcd3c53db871a62d771781dfa. 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/QMRSZ2001238.