Tommy Karevik (born 1 November 1981) is a Swedish metal vocalist. He is the lead singer of Kamelot and former lead vocalist of Seventh Wonder from 2005 to 2023. He also appeared on Ayreon's 2013 albu
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 0xbd7331fcbae43c08104fc3d79dd94035859ace93a368b1c5f96c42b858089cfc. 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/7c487dc2-2a1a-48a0-87df-6c2da8bf1e88.json and https://artists.proofprofile.net/proofs/artist/7c487dc2-2a1a-48a0-87df-6c2da8bf1e88.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 0xa1efd20b09bd0e5e924ea812a364ffc60aefd00b9c8dd31cbf2defff6c151cf3. 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/NLR491300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfd3d7dff377c5b64491127d814f0f49f3f28dc18a1a19fd5adce6dd20babe52. 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/NLR491300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2bf5a7e88e188b5d2b93383af7ef4b0da9983024d680085fd7426e27d86fae5. 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/NLR491300010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc85200a6e44c43c156cc9214f9fae26bdb7fd0afc725b1f26e20df1221c5997d. 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/NLR491300012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca59b62d49716eeb9b7316b11bbba3f3268e47ec9c10316897dddb5a7a41e49f. 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/NLR491300021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52fd53a0b522be75d6dc7b6812bdcc99fe7f088d4352927d85c460348fc6e45f. 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/NLR491300024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf7e2cdd058ec0d9243cb84edbdf56f83afbcc167d027c4fcfa95eddb1c620f0. 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/NLR491300025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52d0b6d99b16dd59dc0ef2c7baf4ca0b51dfdc34a4bc916199103f2b719cd70e. 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/NLR491300026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e859cfa41a07eae92ebf5abf440828ae3de795dbb5fe943037043433b520f16. 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/NLR491300028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c959a034ee7acd375c02d67448fd0c934223817e8c0314b64dcb073b9b2cb5f. 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/NLR491300029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1d7f760b3d916f4156e645ebd04ceced6e8d47025e4786f248fa959d838dacb. 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/NLR491300031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc81739d3e6564e6343ab5b6fcbeccaa7b7856fcc90afb31e443956dcaa514b1. 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/NLR491300033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bf6f10e34b7a0ae89eda75696478f4e5cbb6e1468937f12e59bf77a02325286. 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/NLR491300036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5aa049057ef850ac24ab04e081ab9611fe1fb4044189267b923896388f254d39. 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/NLR491300037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c5fe3345c7cecca7ffe34106fd5389f1b07e16e3a8d5e076b1ff62cd70888d8. 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/NLR491300038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea681e243977c08c98a7aa90353066e433213ac4945b2ed7327858080d536a93. 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/DEH841900187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87929a7251b9eea3d9ca8e3b3d0fdf7b3b39a177bcbc750da339b002fcc5fd35. 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/ATN262436804.