Leilani "Lani" Hall (born November 6, 1945) is an American singer. From 1966 to 1971, she performed as lead vocalist for Sérgio Mendes & Brasil '66. In 1972, Hall released her first solo album, Sun Do
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 0x618cb7219cb0786d56e25a536416ccf5d2598056c1e4c5202967c22914cfa492. 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/5f740401-6ebb-4850-920f-e4ec0affd42e.json and https://artists.proofprofile.net/proofs/artist/5f740401-6ebb-4850-920f-e4ec0affd42e.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 0x214240dc3c300b3d5872743591c7798d3beb86c8f8077e443a3a95f417a2fdcf. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/QM4221600067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38ebfe05a2f821759426bb11b51a61ec65f6e8902c5d39a6843db17ee4a191f1. 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/QM4221600068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa10d7f8356aad817bb35474c15d0856f91daf7ba53201751e72485782a1f6d4. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QM4221600069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e233b4bb86fe262b17b41c1f44f7042916cb8166d451ea02d1a1bda73fa0ff2. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T12:04:40Z), 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/QM4221600091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c815eaa9f77f61150e103ce2065e943502747fcecc242483642773cbb11957c. 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/QM4221600094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ea019362eff6cdbdcb1ccdb2e03fb4d99d6c02982ef8c0d96fe874fcfd29994. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QM4221600001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8715514cf678628c6af211f6de6abc73b9335941e280490a66e43bcb7d01be8. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:04:10Z), 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/QM4222100025.