Jan Johansson is the name of: Jan Johansson (bluegrass musician) (born 1958), Swedish acoustic musician Jan Johansson (jazz musician) (1931–1968), Swedish jazz pianist Jan Johansson (bobsleigh) (b
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 0x4eda6e72a5faca209a6a2c32d7835cd2ef80bfa30bc229ecbc35167c289842f6. 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/f1b37de4-c285-4554-835e-7a2aedf02ac1.json and https://artists.proofprofile.net/proofs/artist/f1b37de4-c285-4554-835e-7a2aedf02ac1.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 0xaf9463414308f56be3313bc7eed8bfb653db75505b82ad0d9f3f2379e0386e0b. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/SERVA0632007.
Jan Johansson in Hamburg with Georg Riedel
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x739bde37073b56df18646aef50c8e04c734a7c72653e8156c1dbd24aab9594ea. 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/DEA891101501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c523a19acc6325f22331b9e1adc75dabe247df2fbcae9fa53ff52a6a66184f1. 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/DEA891101502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe43b616766126c08abf8c88ff27a00351605c2c4628d0df25f2b4c56f9641f8. 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/DEA891101503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaf47d73b1e1b36a05bc17dd63222b41586e26120166339816ec2088bcdeeb5c. 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/DEA891101504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c88a24d0a631a1e4d92e3561067d8fc54752ddfe57778415b9de91e709c5a60. 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/DEA891101505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e2d7bef7442603f037da218f8d33d2e4d4d04a152f883d21a2f7c3b64641f2a. 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/DEA891101506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e56016dbc6b56c6242899d38b35d93e07cef21bee4956fbe597a8004a9ecb7c. 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/DEA891101507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66d6fe1a2b0a37967c053a50664b5ca346359c6b9521c8086733dcd7c1b148bf. 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/DEA891101508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe65448542d582d31f8ac3a434b8989cb33965e8f3f5489e07cd3e051713204cc. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/DEA891101509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5abddb5983a42897927bddcca730ee2951cdb8a19b80b0bb0ebbb6e537f31b5a. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/DEA891101510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x466545b0158a24a3b78277e5511ba38ce47993fa870a5b4b6e396cc117799613. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/DEA891101511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07af35729686a19e220b05326034c3aa2da77a24a77aba6acb28be3e956af31c. 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/DEA891101512.
Favoritsånger från Pippi, Emil, Madicken...texter av Astrid Lindgren
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54175a33c0b052dcc3983a4e0038e45a3df73894341c43bbe159f9c1275b02a6. 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/HKI190529101.
When Johnny Comes Marching Home - Remastered
The Legendary Years - Jazz in Sweden 1949-1961
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecfb3a5d9fcbbe66107cf2530e5edcb4def621abac85e5112cc859108770d886. 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/SEPQA1100417.