Lena or LENA may refer to: Places Léna Department, a department of Houet Province in Burkina Faso Lena, Manitoba, an unincorporated community located in Killarney-Turtle Mountain municipality in Ma
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 0xb742858a494a937186634ca76314e9bb731e81d12611aa95b604d93c2d190d68. 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/bb90e816-bd2c-4dd5-aa2c-ebd8c2e24de2.json and https://artists.proofprofile.net/proofs/artist/bb90e816-bd2c-4dd5-aa2c-ebd8c2e24de2.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Khéo Phải Là Chuyện Của Anh (Bossa Nova Version)
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 0xd0b5028a53f42ec4ac664462b67bac14e7bf3aea862da29e78a8aad4a0c721dd. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/FRX281963453.
Khéo Phải Là Chuyện Của Anh - Bossa Nova Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe25a23c9aae8b2a6f831b0b89a8fb9462de0249dd8f2b0905710ac38c8d246e. Chain 2 (Bitcoin): anchored in block 958673 (2026-07-19T05:38:28Z), 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/VNA0M1908332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9eca5776a3c443868292c404d51a7f02d2aa2f00aca679d4ee3344da72e9b752. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/SGUM72100095.
Đừng Đùa Với Lửa (Thiên Thần Hộ Mệnh Original Soundtrack)
Nhìn Vậy Mà Không Phải Vậy (Acoustic Version/ From Thiên Thần Hộ Mệnh Original Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf9c73126b7e199ced95b1231fee0cfa562f32aa0cefdf5e5d65d28cf9312058. 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/FR2X42299971.
Tình Yêu Là Cái Quái Gì? (Acoustic Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x558aa051893bcdea96eaaf50bba52cf8f455bb0b17c1a02082c019274823549e. Chain 2 (Bitcoin): anchored in block 959096 (2026-07-22T03:48:36Z), 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/VNA092301662.
Quá Trễ Quay Đầu (Lenatic Bubble Gum Hipsters)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb47936bf8b74d2fd2cad47a9ce033f1196f4de5048e29c55820f830418928145. 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/VNA0R2400479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8541e5500b315f3cab2526850a7bf26a121a8117c51ec85d7eaa72384304552b. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/VNA0R2401395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce559de7fb14f0ffb026c456aa078c567063ab49ecf27234086159faacd911c7. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/VNA0R2401397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x748aba3a855375758a19bcba4cbf03dfee449fd3abdde19897d2072d68f6c950. 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/VNA0R2401400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffb7aacdb8d1ce8faf60e423f7b37d548faf8d54232691cb938770155f464abd. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/VNA0R2401401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28142ddab81772ec684aee16758f3cdaef30b0d118288bf602ac04fdbd0f77d1. 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/VNA0R2401402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x512b5e54627c90a19cd6e16c864e88c614f35454514be0aa4cdeca94eadc5a44. Chain 2 (Bitcoin): anchored in block 957558 (2026-07-11T11:36:38Z), 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/VNA0R2401403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8891f28812ad2d214409cffdf588f28304aa6867c9b4e86173c9144171078eff. Chain 2 (Bitcoin): anchored in block 958673 (2026-07-19T05:38:28Z), 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/VNA0R2401404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb47936bf8b74d2fd2cad47a9ce033f1196f4de5048e29c55820f830418928145. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/VNA0R2400479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf72a539b1e8e7458a677f4118661475cce8073d7e862e9e7b9c3a671a79461da. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/VNA0R2401405.