John Terry Norum (born 23 February 1964) is a Norwegian-born Swedish guitarist and one of the founders of the rock band Europe. Concurrent to his role with Europe, he also maintains a career as a 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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30284eba3fa60aa160db6907d2c2ed317094fff3d4571e84d9653fdcce178173. 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/2c25c3bb-376e-4003-9eae-aeb6cf9e93aa.json and https://artists.proofprofile.net/proofs/artist/2c25c3bb-376e-4003-9eae-aeb6cf9e93aa.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 0x96da333514a0e7ab5993bcae6d5d500b779da0a93ef0391476369e88c7039e70. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/SEBGB8701040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56cb150ca7ce166927532c75b7ed4db2fd10d72ebc6a2d78d40f7fb6237934a7. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:38:19Z), 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/SEBGB8701070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5ad352cb77f34e449d40cf44c246b955e25be620f07070683a7e373e27e2acf. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/SEBGB8701080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1c2fdba0693fd2f610c6d7a9c8e151e81501ea867d6ab858512b28f3c1492fd. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/SEBGB8701090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9fd4235da7acf3aa3d71cfbcbf7273ce3feced71ced0ab9b6bb663026dc46de. 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/SEBGB8701110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe203b4e1eb861ba53a1a3f3f5666577b4a5d9587efb987b19cd92515f1b48c3e. 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/SEBGB9201010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cbc02b8c1e64a36902761d722660debd075877228fdc50b7561db462b5db24f. 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/SEBGB9201020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc726aad33067fdb02ff671d94e3ab30bc2ff1a2b70742de70529d1240f3ac0f. 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/SEBGB9201030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb411769711dd29310eaceeca8875fe9e89971baad4a2a625a9de9b093f9f488b. 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/SEBGB9201040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0dc37be58dad405a0d87cefd763a71e19b187a8467c28c3ba3f54578ca5de8d. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/SEBGB9201050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90f29f1510092a880b08b9478fc4010861cac64bceb224f73aff674385bbf7cf. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/SEBGB9201060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa40b7cf0810498e1cb793db8ac26e7fc16cc7eb8148269b1e4a8bb4e1e2cab99. 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/SEBGB9201070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0adc8281bd7503a1bfa3fecfb1508bab203b4dcb1a00fcb38a1abcbae87b312c. 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/SEBGB9201080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0899cee6857a689cda9706ffe020ef0a922796b453de3a7c7572f314bb53d943. 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/SEBGB9201090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ad50d1bea55922a7ce5af05072a0d948b336781e1e486dbc033b52156ae47d6. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/SEBGB9201100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x862a1a9ae056defa17912b9723d75b10716d501aba0914f55107fd8b95aa697f. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/SEBGB9201110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8faee2247f273304dfa162e9fef91b0d4073b60557a8d32bb9d30d43b2ef3293. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/SEBGB9401020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53cc5f0b0da9df2bacf0f911820e2aa68de6ad9f3d1e988ffe2e22cca540fbee. Chain 2 (Bitcoin): anchored in block 958722 (2026-07-19T11:03:50Z), 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/SEBGB9401030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x627bf5d00e8bd51a7b2b17f45d2324888f7b550561740a70d09ad3d85f913d30. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/SEBGB9401060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4448149641868f2a9aa064ae20b0a4596f7b7aa3699ed6e9a0e933a6e8cde873. 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/NLB930401380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba93beb85c572cce750385dbd7284c8f206827539c0bbff6956f6fcd5a8ab5a9. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/SEVWR2105401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6c7c7612653f0dfe876e4e5efde8190b3debb290cde6c4b8f96afa6943f64f7. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/SEVWR2105402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa80b3962780a75fd7bfd4a603d68e2ed521925a2a4d39485b2004876ae8bae26. 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/DEH842400328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa80b3962780a75fd7bfd4a603d68e2ed521925a2a4d39485b2004876ae8bae26. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DEH842400328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x110f44e5789717887ac4697ab68acee6212717da7e1ad9fb66c01eaf0f363473. Chain 2 (Bitcoin): anchored in block 960340 (2026-07-31T03:15:04Z), 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/QZEQ32100125.
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
Smoke on the Water: A Tribute to Deep Purple
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf9efd61adf5aac4de06cafdce517cb8c598a78a02c3f4b7e87bd360a4e41684. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/QM7281518306.