Thomas Rusiak (; born Erik Thomas Sihlberg 8 November 1976) is a Swedish rapper, hip hop producer, musician and singer. Rusiak's father was Polish jazz saxophonist Alfred Banasiak. Rusiak was initiall
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 0x00e5add1474f339784988fc3d9d0a4729cd8b7bc510c2f9162ea40714ccd6752. 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/c9461375-7071-4949-8c78-0f18b8308276.json and https://artists.proofprofile.net/proofs/artist/c9461375-7071-4949-8c78-0f18b8308276.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 0x53fde1b2341b28bd7f6749b4bba43d4324aedcd5423abbe703111431b7fc8644. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/SEVJW0003010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x819f2eb2bee7578ba84b99b4e5d6e30823e58cc7ef94ad60ea161dc21ea616be. 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/SEVSM0200603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc476dca35ea3b1b7cfb9748e820bb75a468ad26659b72eb1ae626deeb82a0594. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/SEVSM0200608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f00365d5b37b8bf54e970a5fb216229f666c2e4364a256e07833438fd02de28. 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/SEBFO0002010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57e22f7481100717aa1f9bf7cc1957913130b0a54d43dbbce2230733a438c15d. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/SEBFO0002020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6df45f2564ec833df30e51811f33215f26509815735a53f7e823500fb6a76c28. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/SEBFO0002030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c25e0414ea6b6c1a8329f589041f8773ee8f0b013fed43ecfb59434ebe386c9. 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/SEBFO0002060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfa38117455446b27fedce4d50c2e0c97962293a2713bf55361c1c118f79a9c9. Chain 2 (Bitcoin): anchored in block 958487 (2026-07-18T03:43:59Z), 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/SEBFO0002080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90a900b33378138ec69fc4302a7ac8493e7f176c2c641119b4a588250ab456e6. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/SEBFO0002090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08fbf697fcf9bbf06d41a21d3ef9c2ee9582b4d8328abeaf69bf9b506e0ce685. Chain 2 (Bitcoin): anchored in block 958680 (2026-07-19T06:04:14Z), 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/SEBFO0002120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ada946d49109486e42222130f25625d45dab50f88df228cfa927ae3f5d05c4f. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/SEWBD1509406.
Jay And Silent Bob Strike Back (Music From The Motion Picture)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c25e0414ea6b6c1a8329f589041f8773ee8f0b013fed43ecfb59434ebe386c9. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/SEBFO0002060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1adc690630e9496ccb4e212fdd08087e5ca3ec2d01a4ed42cae48d3c0dc251fb. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/SEUM71100980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x168d01200eeb9e3c4bf5d423b6326d837a38372e55b2d05f2036fd10f9f6133b. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/SEUM71200994.
Faller av (feat. Thomas Rusiak, PeeWee & Eye-N-I)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fbcd1f1d5ab5eaa720e5f48b6e6d7705ac5174d29e17d4882de49d521d72e86. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/SEBGA1802615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9d4959cc9d329a2d4e9275ac6fa105952257330d3f802d439cc8be38f5d3be6. 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/SEBGA1300270.
Håller fortet (feat. Thomas Rusiak & Profil)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbc31005bafd483e74df82abdb368753c644e4358503d0d12ec98b0861a4fe5b. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/SEBGA1300273.
Riddarna runt runda bordet (feat. Big Fred, Houman Sebghati, Ken, Nisse, PeeWee, Theodor Hellborg, Thomas Rusiak & Ayo ett öga rött)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf8a5874203abdc4be15039ed80d7278a7a5b639f89d45845aaa8dee10b7b254. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/SEBGA1300280.
Vinden har vänt del II (feat. Ken & Thomas Rusiak)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x756249e6c25184e047686fb72700ad4b73a9f666100a3071f85b6d9050feef97. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/SEBGA1300283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5f755508d7757b686737a9bfdd691338abc6e42caa88d28403f8c2eda95657f. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/SEBGA1300287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb678df6fb2ef54c27b2502f3014391c5c375e0d6409e893cb1b6cce7a5567280. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/SEBGA1300289.
Vinden har vänt (feat. Thomas Rusiak) - Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e0ec2754293e6aad7a6e66598d7829a1f6d1bb75e4f0fd1121868ebdd398f2c. Chain 2 (Bitcoin): anchored in block 957064 (2026-07-07T16:43:08Z), 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/SEBGA1300295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40d7261f09cc7a89a6ee2fb148cc457dd9a628c1104eb6ad786e735f54742d71. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/SE6QE2466329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18c5b3d1f447b4057ab5fc3eb8b5912170331b10f3b0488e47230ed6a273ea65. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/SEBGA2304720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac4f0189fc7bd88352ef4d379b685e34fc73ff4b4e52b4b443187cab1c3ca908. Chain 2 (Bitcoin): anchored in block 957039 (2026-07-07T12:58:18Z), 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/SEBGA2304139.