Björn Rosenström, born August 8, 1970, in the boroughs Tynnered in Gothenburg who resides in Bollebygd, is a Swedish songwriter who has performed as troubadour. Nowadays, he is a part of Det jävla ban
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 0xb3c6b3b7ee9b49f824725f7e45073b0ec2ee6ab81d2a3949992bfa4c97360a99. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/40370d02-62e2-43e7-90ac-ca6d3a093430.json and https://artists.proofprofile.net/proofs/artist/40370d02-62e2-43e7-90ac-ca6d3a093430.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 0xf6abb94299361343301b2c31f528d3337f15d33a44fc91b72b3e2355ebcc9735. 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/SEVWK0100106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee836e06d09e5c81e8141926e666f156d603a900d8c92269976093fd36a2e7e2. 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/SEVWK9800107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e1ed39b95e64a044d63133655d3fec8005fe10b39e5cdf95dec5c0cedadbd7b. 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/SEVWK0400101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06292a98da7d84fcab853e4d7e17caebf9c56ee61fd7d40a4374d626d5a1999d. 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/SEVWK0400102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91f01a8578bb0fd22b50dc2146617316f9c28d45b579a488aa5f27ff44b43040. 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/SEVWK0400103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x636c834fa9782a3cb1238bdde819d9a7733b4a818ffb54f9392be4e42b362919. 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/SEVWK0400104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe45be37071470cbc28862a1b9afdb8f65dd345193573421cfa17c5bf0eb02542. 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/SEVWK0400105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde9c55a17767845c4ea3e35688be19989b045ce3ad74bdf3f5ea1b794e89237b. 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/SEVWK0400106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf098ee7248c5159bb20d42d1a74a422bc6e3c79dbae621409ca94b33cb39a0a8. 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/SEVWK0400107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x340860136310b8a89b8e875dac44ed46df523dc957c96614d8d10c10d2c7b6de. 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/SEVWK0400108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3219dacc0c60cb3f1f8485651c1e7880560c0478db45a3ce683c34bf8fe84bdd. 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/SEVWK0400109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x485dff698ae70f85fff1a812001804e610bbc266e9a8a6306e21ae04edf907af. 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/SEVWK0400110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78ae5a229e278beba0bcd2adf529f21e5557774fec138951ebf4f68d84187287. 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/SEVWK0400111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d37aab539a2bb481f371e4dc4729721f36ecb4dd1c40fd6afd123c7812e2e8c. 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/SEVWK0400112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f9cf82dbce5a8a602a13ac1ee461c1961284cc0b31256c2f9dbc15fa97f701c. 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/SEVWK0400113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f6be09b5aa79d84134c0bff33a16842ed6b37f3c2e1339423c85e5bf0d20a2e. 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/NOYEL1806010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x905a9dc32d54776c62dd9ff60e5aba1fb21af72e8663ee9f28d49a192ef85c9c. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/SEXCH0308202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c858ce40d118c3c94b4bb5fff7d76aebe5c31b560186b4ae364bf3ef73240fc. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/SEXCH0308215.
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