Gösta Gunnar Linderholm (22 June 1941 – 29 December 2020) was a Swedish singer. He was best known for the hit song "Rulla in en boll och låt den rulla" which was released in 1978. He wrote the music t
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 0x142658769a3f2fe4f559897255ec59f266d7df242822cba503ac60a702ad814e. 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/d6efdf03-c0f8-4cb4-ad3f-64944ac1e91f.json and https://artists.proofprofile.net/proofs/artist/d6efdf03-c0f8-4cb4-ad3f-64944ac1e91f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Gamle Charlie sjunger blues (Good Time Charlie Got the Blues)
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 0x422ec77dbc8fe4c203cfc2f18a856867bd60c1df8dbe45488098d4ed462afe73. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/SEPQC7304050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6faee8dae5fcd5f27c49415fca14b273bb9af511bebd2184dacc29020812ce03. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/SEPQA1100707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc05e7f57a4775ef3995dc8a3e07dbb000ad43a8b87b5a6e9d5563a29db061d3b. Chain 2 (Bitcoin): anchored in block 956405 (2026-07-02T22:22:35Z), 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/SEPQA1100709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35d32687e496574bc0d19c0181ba9daf965c63985d10870d98ea9dcc8120fdea. Chain 2 (Bitcoin): anchored in block 956405 (2026-07-02T22:22:35Z), 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/SEPQC7304030.
Det brinner i en soluppgång - A Tree Too Weak To Stand
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41c4110b71c2c7e091523504eda68aa116419c5b1d9036d0f29761e8c6eab121. 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/SEPQC7604140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c75b5c59ebc3b6e0c486fe200cdcc9220d90ba3bc33796df4adc365567d7868. Chain 2 (Bitcoin): anchored in block 956405 (2026-07-02T22:22:35Z), 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/SEPQC8304040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdceb262039f1376af9ee64c875025832d9490673ff2adfaa6ae5028427ef7c5b. 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/SEPQC8304180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa88f5d5413ddbb366681cebcb5670c237fd2418b6e4a6012f7dd70463fd0ba83. 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/SEBCA9800201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe69aeb1312a420b3071da88e49bf6dcc7acc23ce3f0972d06221bf48355deb85. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/SEVTE1500101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeeb2237702070c45e9424e5c1585be176dd2468a676b2fa4b6b2edaf4620f7f6. 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/SEVTE1500103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3008e6f93017136dc6f64db6dcafb9b45765781eed916dfd180e71c40726e90. 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/SEVTE1500107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde50dbe0770a0316d3518b2e084a4ec88ea879c76db2cb074fd463bbf3af37e6. 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/SEVTE1500108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68b087691b1ec68a236128c491dd9d0c768d68d83e9558d550ca83e6dc07439f. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/SEVTE1500111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc12b3c5baa4bc2c7fd59e62c09f8642bcffc134cedf175d90117d307e8c008b3. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/SEVTE1500115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x246f3924641d040259266a9b9c042f60be8c063c67f9586d14e135f1f43f1bd4. 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/SEYOK2519237.
Allt Du Gör Är Att Få Mig Långt, Långt Ner
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8fe25eb725d639d65addd2adaaa3697b61bba15b1a93668132e956d224f82be. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T13:49:44Z), 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/SEYOK2519240.
Sommar sommar - gröna ängar & böljor blå
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdceb262039f1376af9ee64c875025832d9490673ff2adfaa6ae5028427ef7c5b. 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/SEPQC8304180.
Noaks Ark (Noah's Arch): Hundens sång - Grisarnas sång - Noshörning och flodhäst
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe663419793f7f0593e2773ab532420923e0f5b87fc5d28c7e7b52fb295167bea. 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/SEBAA1206207.
Favoritsånger från Pippi, Emil, Madicken...texter av Astrid Lindgren
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74dad442e9af659f94dc709999d22471e8966215d291e0664036a98462cb6696. 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/HKI190529115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a85209797b8f2a2d1ff684e0b9455ef0a9095964e03b6b1ecc33bf44d5238fd. 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/QM4TX1746013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7ba125206f5c2a658a37e1f61dbd8b8a8eb6455703c28f5e2c63e746cc2e2ae. 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/SEPQC7804020.