Hans Oskar Linnros (born August 15, 1983) is a Swedish singer, rapper, songwriter, and record producer. He was part of the alternative hip hop band Snook alongside Daniel Adams-Ray, before going solo
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 0x17216955c944f8a54829a9cf8b45cf131fda569fcd3b88d3c561a896bac95594. 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/be51eb60-0a76-4f59-bcde-959e076623cd.json and https://artists.proofprofile.net/proofs/artist/be51eb60-0a76-4f59-bcde-959e076623cd.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 0x0ca0443d69c8432b61ef06e260edfbe35976e4f100a64e15308665645aee022a. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/SEUM71000250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x557cfc53909f72afdb525f965c415124d6b310b02420f4b173c2103c74f4d416. Chain 2 (Bitcoin): anchored in block 958422 (2026-07-17T13:35:31Z), 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/SEUM71002385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc227f3d3d32197f1d818a07352a600817c3b8c07a92b7725af6cc0b6b11b247. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/SEUM71100169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf78c893c95e28332cf28a023d0cf746286a7c5b7779d74ec3ef43d7228edcfa. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/SEUV71300012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82831ba17a0e0e8c47676c065a74fff25e1d2deaa59e534ff1a883f16eac7b46. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/SEUM71401190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe730bd16dda5cc55934d31779179d348bd0491aa1a0e863fb2f2e370b37b8616. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/SEUM71700337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x456f69240c6544b7db8e9c355bd7101a05f592507522ece6a7fb3be30497063b. 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/SEUM71701142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f398cfc39bde198b3a01392e8da0867fb3c4459fe43715bb8f8fc45e2d2d06e. Chain 2 (Bitcoin): anchored in block 958392 (2026-07-17T09:46:31Z), 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/SEUV72500072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9eddc8053078843519915f1332b032517097e8f36c8c8fc63af60760533e9407. 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/SEWEE2325201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc49e275964aa7e1777817faf1e03cf800a6a3c69270e5f1a418b301cca4ce3b3. 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/SE5AJ2101535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b037841aa2dfa3d05bbedbe8149cefd5aa9fbb9c77b02d10d906b8789b8e87a. Chain 2 (Bitcoin): anchored in block 960300 (2026-07-30T19:42:40Z), 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/SEUM71000266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x364e1c8e957b266a228909f6838361a69b4b9c6808f351a1d3001b3b549bf618. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/SEUM71000245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x364e1c8e957b266a228909f6838361a69b4b9c6808f351a1d3001b3b549bf618. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/SEUM71000245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d60989f0ad07d76faab57328f457f2b5ace4136a72d2006ae7af4355df0341b. 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/SE6J42100101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d60989f0ad07d76faab57328f457f2b5ace4136a72d2006ae7af4355df0341b. 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/SE6J42100101.