thumb|249x249px|Christian Kjellvander (March 3, 2017, Vöcklabruck) Christian Kjellvander (born May 13, 1976) is a Swedish singer-songwriter. As a solo artist he has released 11 studio albums so far.
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 0x305ea650bbb2b7b16a1cf1903b74c8a4e950db7b0b5cbe26d043da82d990e05a. 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/b7aec0ae-0614-4808-ba8a-71447b90aa7a.json and https://artists.proofprofile.net/proofs/artist/b7aec0ae-0614-4808-ba8a-71447b90aa7a.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 0xe207317c3e35a8db9e4b7f0969db06ff7b34a4af6f327d9fd23fbe0a2491ad3a. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/SEUHA0201203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x999c2a37a5e5b98e46763e0a7f837c67313ca809b48274c9d3455111bf5e6337. 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/SEUHA0201204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x941851e028dfc5d96264bcdd7416783cb8e27b466e122fa88d5fe97906c731c7. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/SEUHA0201205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56e64ae74a56f20b5e7756fe5c9be652723a3d9c74feaa824db0e139276fb3d5. Chain 2 (Bitcoin): anchored in block 959065 (2026-07-22T00:32:37Z), 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/SEUHA0201207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab20eb79904b68d5ec157cacf643287402c35878557ad5cc5c2bb6c4376b91f4. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/SEUHA0201208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f8ac77e70a3c3398f75159e4b5fbbea4a8d6720b82f9bd7cd1add5f5c1e0572. Chain 2 (Bitcoin): anchored in block 959089 (2026-07-22T04:49:08Z), 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/SEUHA0201209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf597675ce29c32c309260747730e41ec6fac88bfc5add4508c4d02d98252e22. 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/SEUHA0194020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3658ea86d29bbde6e2f8ee1a2697a0fe026cc951f258a4749c9a192a1fd7f16e. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/SEUHA0512030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79c1af0e7dca8c9c60ab62790d5fc73453724f2c33edb3a40900b9b8549a6af3. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/SEUHA0512040.
I Saw Her From Here, I Saw Here From Her
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bc8fe7e2434b127170149dd77447903aeb106dd867342341a51205271cebfbb. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/SEUHA0705040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d241a77fd8a90a0322c171530550e89a65da3724094b1e18e459715ad1929ee. Chain 2 (Bitcoin): anchored in block 957551 (2026-07-11T10:03:47Z), 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/SEUHA0705070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0b387ca1c22c4c9d1e7d0f2f7b6c5c8ec1f5b86b257e2995051a436bc6b5ef7. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/SEUHA0705090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53ae20ba24b55ed51f41644097684268bd6419145eddd8182b831619ba686243. Chain 2 (Bitcoin): anchored in block 959052 (2026-07-21T19:50:27Z), 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/DEU161302746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52f52c36bcd4df50b607d343e611d599096d7a01ac954edb8c83de472a624501. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/DEU161302747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x499eaaf201983bf203ea8c587d4a5570e964f3f83ca0e52da51867558384cc75. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T07:09:50Z), 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/DEU161503462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e722867c2edcdaad15202858c715e7370bcb6f13e37726c78989395265af205. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/DEU161804249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x758661141eb45b1a663c9008835c70d6ef04dacb7ed03470c9ab215644a06b46. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/DEU161804250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3fdaf58a1caf1347589bf80ebe035fab55be98b8064c617860c386fe099fcdb. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/DEU162005274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54107913673db75a1fecef363af963c635df096e3f267554727d01ff6c0f758a. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/DEU162005275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad7589d18bfe67af0d292b516c6f9445ccbc13ae70727e76070233a96f361613. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:35:03Z), 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/DEU162005277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ed9405369c17ea3dc0d1462472f72ff10b2dd36abd500e42bbd6c5049655aac. 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/DEU162005278.
Exitas (Music for the Artwork of Jacob Felländer)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0550fcfd2d114474b6a9c50ae79a96bff976eb32e26eb5f0fc55f9c5f6af8692. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T18:33:44Z), 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/SE25W2300301.
Notes from the Drive Between Simat and Alcoi
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x369811c86fc680f115721d28b969e86800390c8ea3a2c355fe67239bf72c2f15. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T12:49:48Z), 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/DEU162306423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf7313ef522bfea5d78b5d34257cba7868020e150ae0fcd168c3e8b4c79ff818. Chain 2 (Bitcoin): anchored in block 957546 (2026-07-11T09:35:53Z), 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/DEU162306424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d5a7789ad9368ce4b783d0bd427f814f6efd127eb3153219150d8644f5f5c1a. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:21:01Z), 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/DEU162306425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2051010e40a11c3037efb3b6b5bac4f25f57bd55eb666d52ee9937df0384bbe9. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/DEU162306426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7619aa20048c4817371818179b00b5a1617edb70be38b683f91f2b23ab8e7fe. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/DEU162306428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86a1d3707e98360e05cef84fe1f0b653e1b2f8b3d4ba91ebad88eab09dcfd41f. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/DEU162306429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd956697c55e68d3c0766f147149a2908ee4b5f2e5c33297b70af67eaefe2bd99. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/DEU162306430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77bcc2e9b270413329436f2457226c092319d5e19a7d8db973ac834d6f94c57e. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/DEU162507305.
National sånger (Hymner från vågen och Epas Torg)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1ddc0b2722a1ef40031e78aae4974244a040d5f6bc641c14920aad669e6463e. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/SEVQJ0200108.
When the Wind Blows - The Songs of Townes Van Zandt
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6e5c24c50727ef90feb8ded14ed88fd0e09757ea370d3eaa3fc1efd6c738da1. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/ITIQW1800128.
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 0x5bf36951d514b0a1fa46314e932685ae55fbeb8581393fa6ab99227ba36d9068. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/SE3SA2002901.