Petter Bjørklund Kristiansen (born 14 May 1989 in Fredrikstad) better known by his stage name Katastrofe, is a Norwegian singer and songwriter. Originating from Fredrikstad in Norway, he is signed to
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 0xb3aee2f7d72033ec5bd859587644be7184f94c30a367a4ffbb1214a162b6e210. 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/696ce920-701d-499b-a141-eb1619c10692.json and https://artists.proofprofile.net/proofs/artist/696ce920-701d-499b-a141-eb1619c10692.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 0x4f6ab377edacc77b5a67c4c9cd565bb5d57ebec1bcf986f80a239750c769a9bc. 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/NOUM71500546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x971e953b1a4558d6b1dafe587abcf1a0546e154305d7b673d0c5ce8155f882a5. 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/NOUM71501553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f2f8499209b2eac84d5bd22ceb10cf19bbcc61866068b6756a10f866eb3f92c. 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/NOUM71800120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd152e3d853ed9de0021fb39afd8dbe6f6814a45ef90e792df272ec30cdf05fee. 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/NOUM71500895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18aa5164489495edbc3a381d58b3b3079662b13e149c24b358034ca802f713f7. 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/NOAGW1400253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x022f6dea6d23b107a3bd6ff2c9d20d46bc8b8f67bcd8f34908deb28bb5797063. 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/NOAJR1500081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cd256b7647413b80bbaae761594236f552c9e748e2f80774f76d86384f4d9df. 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/NOAJR1500029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96fadcb5a4d1b1d1a9b49830beffb7a647f345750d5acb3abb57a6e9fa435acf. 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/NOAJR1400064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fd3ab978342d4b39fa590c2bc840094132c1b9003932e4f27a61aa5de6e9cc1. 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/NOAJR1300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf98583393ba1e79b4fdd2f371198e1b7c1b644b7807a68f9a27f155961b72a0f. 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/NOW9G1201690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x564f012e534ce017803874f679f3b2554e8327ad97677a00c19d22082a73821f. 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/NOW9G1201670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1904b65f2d5ba50e579dab95164862a14da17b37e3d0a95757868ce649a86fc. 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/NOEIA1903020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1904b65f2d5ba50e579dab95164862a14da17b37e3d0a95757868ce649a86fc. 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/NOEIA1903020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe11cd5578ea21f97c37025e598131d24c6e42ecd2ca146a014fab73599d07b18. 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/NOEIA1906060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x686b207cb51f6ecaa174a4c16acee7dd185c650026b7e8a5bb9c9219fc026928. 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/NOEIA1901050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x686b207cb51f6ecaa174a4c16acee7dd185c650026b7e8a5bb9c9219fc026928. 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/NOEIA1901050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d4b28538f1c695d3aabcd077d979b485e285fddb266ad218d59d5a46c99d2be. 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/NOEIA1908030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8dfc3e9d1886b20936e8b2cc78e27f8da900184f2e5a33b5ad1026f75ade6e4. 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/NOEIA1902050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe11cd5578ea21f97c37025e598131d24c6e42ecd2ca146a014fab73599d07b18. 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/NOEIA1906060.