Letoa is a monotypic snout moth genus described by Francis Walker in 1866. Its only species, Letoa patulella, described by the same author in the same year, is found in India. References Category:Ph
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 0xb304266aaccc3b313c3d8d1ada187914457fd1b67080b9d158d975ab36ac95b5. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/00f39370-e021-43b5-92ba-ebe54f21794c.json and https://artists.proofprofile.net/proofs/artist/00f39370-e021-43b5-92ba-ebe54f21794c.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 0x69e7e51ea372a0ab04def90df1a4104183e5a32d239e05b3731bbdc69f5b0db6. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/USLD91753408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b8c37f1e3e26135a23b6d6682faf82cd0f21fe82f4dca2d24d4650a9d931773. 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/USLD91749535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5121ca4314359850f8a6f80c452d868d51553d8ab8f2359e60552743e8b66c3e. 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/USLD91740121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fd8bb5ae121d3c2de1ad6e90a192c6879f2294f634a8e9f76c81852e7f499eb. 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/QZFZ62256198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb876075a96afeab413f5643cd841a6f3a39e6d4abca1fb33936c8d11cc4d3fbc. 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/QZPLR2178399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbaeb05c2a024bab91060616f2630e7f0bfd1026781bacae75034ef00f518912f. 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/QZNWU2154962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bcd6b5b730480ff774e5b4144aa14bcc6adc9da7d94141cd72094c1a0ddcf60. 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/QZHN52170500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85612306656930f5e46ac48bc5158f3e66a4115d3c072dc06565a5da1f1a808a. 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/NLRD52017369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb50c228a312e98a9dae684c13ba14d8de1846bfee4592f590f7c45761014ed40. 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/QZK6L2361165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8159a2f098092d62c926e0e4ef701310024652183110b98ad8994e4ed2fa00e4. 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/QZNWS2256498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18a278fb47c6b4122f4e13ac14820542baaefe8ec7f8609ee09403f7d8214aab. 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/QZHNC2248100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5be674bb253e97a86e442b6eb4525021728d8a294c5aa6a3bb3f031bb2a53adc. 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/QZDA82276720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28a184d723d03b166e7d58e3a40bae83c8db50249054b1e84135725890647ac8. 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/QZDA82241035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbff7dc5421f4645f3597362db51ccb0a94bbf477008ad5e5bb6bfa48433f6306. 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/QZK6F2126361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe49732c9bec95d458939143eed99e26f9fc009eab2751a4f1ffc09ba76396b95. 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/QZK6G2032380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97ed6233c9af2f294c6fb02083c9a3ee82f7b561c85fc63189527dbb1963ca6c. 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/QZK6M2032193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc0ddbc98683b21ccd09ac13ebd2c4e32f79dcb58a34e1f1e7fe09a3f2e9d47b. 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/QZDA42146117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfa191630419cd970433c20dbe668b8ecbc06addcadd780ed2da81cda219d2e4. 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/QZMER2224318.