Hotel Lux (Люксъ) was a hotel in Moscow during the Soviet Union, housing many leading exiled and visiting Communists. During the Nazi era, exiles from all over Europe went there, particularly from Ger
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 0x664d95420f8306d2a5d9ec012f79649bfd6c6cf5644632bb253c51a45869a507. 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/23c70283-3b4b-4134-b9e4-afc8c1d6b0ff.json and https://artists.proofprofile.net/proofs/artist/23c70283-3b4b-4134-b9e4-afc8c1d6b0ff.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 0x08f7846201d42ef53f2b2f23e3a548b783dc0f7d0f8a013b2382a8021874905d. 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/GBKPL1804980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe17f3d58251a3279a5f399549f78fa1bde4ef3a8d2288e79ce8adf38bcf81f9a. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/GB9TP1900254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f2c0c165b3dd6656c50f4068d93f9a63ba83562e0cb082c57d18e64f2601041. 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/GB9GM2100289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7b1f54b69c392c5ba109dd40500e834129863a4fcaa4585e00d0de0df141642. 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/GB9GM2100290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ea8e9776b72226a133d9ee99353abc4b07998e72d2d3ce57741f4d8cb67d809. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T20:07:02Z), 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/GB9GM2100291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7213d79e50c7acf6acb5585441ae1e77a75808ccf9d56fbd4cbc5bb27c963670. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/GB9GM2100293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08217c3c17383996dff43f5ee31dfa016e449a154138caaae97338cf017ba360. Chain 2 (Bitcoin): anchored in block 958662 (2026-07-19T04:43:15Z), 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/GB9GM2100296.
The state51 Factory Sessions: Hotel Lux (Live)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ff7bb60e7161550e4f53ac0669ffb6ed134ac8ef471f95e75ba582c28394e96. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T19:26:13Z), 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/UK6822508148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a3e972549f2b6f6415e6ca59a256f198c7094dbaf7349e0c468d37ba1408446. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/UK6822511202.