Bo Einar "Bosse" Larsson (2 February 1934 – 12 July 2015) was a Swedish television presenter. Larsson started working at Sparbanken in Drottninggatan, Stockholm and after that he worked as a janitor
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 0x9cf75f49cb09f5f3b3321743d146b305584e8349cbfca7d3db480491044c6524. Chain 2 (Bitcoin): anchored in block 953750 (2026-06-15T06:12:23Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a6424325-f87d-426f-ba60-55e30cbfa62b.json and https://artists.proofprofile.net/proofs/artist/a6424325-f87d-426f-ba60-55e30cbfa62b.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 0x87cedd26e9ac28d063dcbd2e06e96553311bfdaab08d8e879f8b8c4c4f9320b3. Chain 2 (Bitcoin): anchored in block 958825 (2026-07-20T04:55:29Z), 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/SEPQM0800163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ab7d167a8e4bf5b9b628e38cd741f89957a29662f1953ebd71b27bcbc1c8069. 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/SEPQM1100097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76957a8e6c673a3ebfd4e242252fa0f63b8d12298a8e902e8e4b2cbcd7fb1bcf. 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/SEPQM1100105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36ca84e289da2764e17b3a3f29c8384ba62dbbca6114ef3bcb85c3e8b89241ed. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/SEPQM1100094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x549c038bec20b7322eb6817d8ac877d967687c425772d3b15896cff05f047491. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/SEPQM1100101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43f4f3051a46a497e8232cefba522905d3b79ced1f3df28ef2cce68d8bbdfac2. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/SEPQM1100095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36ca84e289da2764e17b3a3f29c8384ba62dbbca6114ef3bcb85c3e8b89241ed. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T10:57:35Z), 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/SEPQM1100094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ab7d167a8e4bf5b9b628e38cd741f89957a29662f1953ebd71b27bcbc1c8069. Chain 2 (Bitcoin): anchored in block 958720 (2026-07-19T10:53:46Z), 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/SEPQM1100097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76957a8e6c673a3ebfd4e242252fa0f63b8d12298a8e902e8e4b2cbcd7fb1bcf. 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/SEPQM1100105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87cedd26e9ac28d063dcbd2e06e96553311bfdaab08d8e879f8b8c4c4f9320b3. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/SEPQM0800163.
Hej tomtegubbar - Julens gladaste lekar och danser
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b4894511390ea74eb45ccbb987363627ed816862126c68d6d47221bae27b0d4. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/SEVSZ7200401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf83947b1840104dc2f6b6058b30df54baf1ef2e2e4a1e7e1ea7808c38a73c335. 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/SEVSZ7200402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc36bdf600b0223c2885b910ba62dbfc6197b7535569e324e7def0cb29369869a. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/SEVSZ7200404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x791c791b0ab269e115afbd26161f9081bee6d8afdfd7655ed7fa3e7e2d5db2cf. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/SEVSZ7200405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a416ceb8ba5f734e62d4aa8a7454ab4a97efdffeb4cac8aba0a80d786949827. 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/SEVSZ7200408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1810bc8068ce206c073f1fa1de1d8065a91f7322a216d9fd56af57574148de55. 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/SEVSZ7200409.