Stein Urheim (born 4 March 1979) is a Norwegian jazz musician (guitar) and composer, known from cooperations with Gabriel Fliflet and Mari Kvien Brunvoll. Career The Bergen-born guitarist Stein Urhei
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 0x74ac3ab7429d6c4916a906ea91818bfc19707fafee0044f4ee880e9526beb88f. Chain 2 (Bitcoin): anchored in block 953827 (2026-06-15T19:59:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d6241afd-21f0-4359-82f2-8d2c9a616cb5.json and https://artists.proofprofile.net/proofs/artist/d6241afd-21f0-4359-82f2-8d2c9a616cb5.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
For Individuals Facing the Terror of Cosmic Loneliness
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 0x7881a63e472655596ad1c068b09490cf25f1aa212466200c6628652164ff2433. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T11:41:42Z), 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/NOFGH2564010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe41ecceb6497ae26a64b0da385ec2820e023bd643ec4a857eecb36443b3b85fd. 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/NOFGH2564030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3658e86901fd859156288dcca6ceda0fb7ee011df04682407bd27f915a1fbeb. Chain 2 (Bitcoin): anchored in block 958552 (2026-07-18T13:15:29Z), 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/NOFGH2564050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe320873c0447adb377b51f6417760a3d5099ca6294b3f589f210c8e9667fb613. Chain 2 (Bitcoin): anchored in block 958830 (2026-07-20T05:30:12Z), 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/NOFGH2564090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f117bc9874520ca24323a766751d5bc754554442c9438903352a0f02c0ec527. Chain 2 (Bitcoin): anchored in block 960389 (2026-07-31T10:20:10Z), 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/NOFGH2036010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb967ff8df803c3210b8b0feb31cd44fdc285e5f07a414328f88552fc6f31d7a6. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/NOFGH2036020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63fa3673df4333fffbaa9f8c9f65f8f5acf4770b3321d2bde3d3abd8f19f8092. 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/NOFGH2463010.