Fredrik Lindström may refer to: Fredrik Lindström (writer) (born 1963), Swedish linguist, comedian, film director and presenter Fredrik Lindström (biathlete) (born 1989), Swedish biathlete Fredrik
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 0xa2a90d255ab4dbb9735c738f0643522e70a7dc937f44ffa8c235947993a057ad. Chain 2 (Bitcoin): anchored in block 953660 (2026-06-14T17:20:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/53f9ee7d-8267-47ac-bd31-0d405b31d18e.json and https://artists.proofprofile.net/proofs/artist/53f9ee7d-8267-47ac-bd31-0d405b31d18e.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 0x6f702902170bd5b8073772577938b18d91afb2a8fcd88251e1aaa0a8a7be46e3. Chain 2 (Bitcoin): anchored in block 958697 (2026-07-19T07:58:24Z), 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/SELFA9911010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda0c618871dbbf57499efed9f891ad2582a29aa8fd51c0ba7fa589bec8594d74. Chain 2 (Bitcoin): anchored in block 958800 (2026-07-20T00:52:19Z), 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/SELFA9911020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5335b0e0d8b6e98b69ba3238fcdbf05c06fe5f1b18f6eed8f14d26c2ef3ff3ad. 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/SELFA9911030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c6e01d4b6f13a8cc8dc94541c56b0eb6e13c32f417a57b729242ab2a26288d3. Chain 2 (Bitcoin): anchored in block 958703 (2026-07-19T08:36:12Z), 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/SELFA9911040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ca9ff134682ee317f8f744c4dd394504b874deff1c795f759e2b7dfa6ff4fc9. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T00:35:28Z), 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/SELFA9911050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2163cdc26c9c40c833f18aff7654107296a5f29a08c6c45127258adb4741cc2a. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T16:14:34Z), 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/SELFA9911060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa6a0d8cc36ac1f5ef0596b80728522d076dfa5392463c9efbf0c712837f19bd. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/SELFA9911070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa691ee9325989b9df15df5bda819d1f34b19a4deab0fe36af80410ebc038596. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/SELFA9911080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24dc204da0df7f29d383d5fafebd9cccb3a645aa04cb6b385231b3a04e903398. Chain 2 (Bitcoin): anchored in block 959051 (2026-07-21T19:48:03Z), 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/SELFA9911090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd693ffa04d21f3e0bafc562566100d3dbeb6edf943f355f3d8d485fe521e2bb. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/SELFA9911100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa77ff00a4924ecc75a26a740e054103300727609f479f5b19c70fc854cf6c72. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T21:09:36Z), 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/SELFA9911110.