Emil Landman (born in 1989 in Amsterdam) is a Dutch folk musician, based in Utrecht. He graduated from the Herman Brood Academy. Landman released his debut EP A Bargain Between Beggars in February 20
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 0x1bcd0a8c79d0a1e5ead890fb9bfb46552338991caba0dbfa50824d3c8765f436. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ca17d7ba-4b81-40cb-a1b1-d52b88c32444.json and https://artists.proofprofile.net/proofs/artist/ca17d7ba-4b81-40cb-a1b1-d52b88c32444.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 0xb58943e692eabb7453b034b3a225834a2bed5d7c99c6f494f3b400767e9eae79. 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/NLC241400046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x971f3e6830814188d9ec320c33f0b7494ba73a05ec7f72d5cff4267251b08650. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/NLC241400050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf757e081f36880131d6b234da96cfb7551a941a1efd4f2ffd7e44c4713876145. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/NLC241600103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe44a886cfb965bf01eebd18aa35fe22ac52e81526dd2cb51178293e5d529beea. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/NLC241600109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7db47cb6932b01b0cb260453f01db3a04ff8da3b94f6352ee26fdf7873248794. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/NLC241600113.
Emil Landman on Audiotree Live (Audiotree Live Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9eb86725fb674c55731726edd6cdaeffb3e18c1b5e9caf343b5d799d4c4221f9. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/NLC242000103.