JustD () was a Swedish hip hop trio formed in Stockholm in 1990. The group consisted of Gustave Lund (Gurra G), Wille Crafoord (Doktor C) and Peder Ernerot (Pedda P). They had several chart successes
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 0x21c595bab0083c46e4a632170bb4415bcd98af6a3ca301fd66509274f2709e78. 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/46692819-d314-4620-b8a7-5b117eed9c43.json and https://artists.proofprofile.net/proofs/artist/46692819-d314-4620-b8a7-5b117eed9c43.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 0x4da6b81e7863e91bdbf560f5c2cbd0242479ec4728f4720385f90c8a9df0088e. 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/SEPQA1201787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63088424629b92d9c4b6adf571fb5982db03adc57af41339f6683aaa19717b53. 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/SEPQD9121170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8edc7e81b711196b87ad1e269b14ff6e8d61ad89e4648f0f99bcf845fdafcdac. 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/SEPQA9533140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83eb8199868313cfce81551c1640ab584af9231930c191ceba6059bdffd3cbce. 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/SEPQD9121110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x002032b28028a446b27f363eb9e53c296af62f3fcc33b37fae65a3e94dfd98c8. 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/SEPQD9121030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd491d6aba95ae82525604bde2ff428284ed2c0c5b1a5f987b12399d04921d8ac. 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/SEPQA1400321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9edfdeda500dc0845d2dae293ff7a83f05f7163581723f6b6263c09af9499b1a. 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/SEPQD9221050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9516faac09d3629924dcf9bc894ff6a2e295fb5b3189935f56ef74ea91088c1a. 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/SEPQD9221030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3c2e05b5c08e23f367092b5ea67482cc909b6858c620782aa910ccb518061c7. 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/SEPQD9221140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7af5e14d4304a4fbb630520ea2bce3d6cd162eb80c2fab64186ddb46dabe6ec. 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/SEPQA1300652.
Vart tog den söta lilla flickan vägen? - Singelversion
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65918435ffd38f79d3f15a43a5cee66544af605112616771ee7ac53b7c8e06db. 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/SEPQA1202375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e2aab1a8603f9f96a7a60bb06a5080b4b246930e75259cad2dcb738bc33f92c. 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/SEPQA9322020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94346faa052efa436e4f08e8847cb61c18804577a7c8cc7fa5b211bf12714df5. 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/SEPQA9322120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebf0c53005ee4f81f8cabe03dd8da267604f4520bce104c1461f734174e7dc07. 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/SEPQA9322150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0020059b5a13f85ed335de24ef8ce57bdc8e88cd0195e64652178a0f179c2d9. 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/SEPQA9533110.
Just D'S Gyldene m. Tre Gringos feat. Thorleifs
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73fe0022887a8bf093482f0d0d178f52a6e4ea212a21d55343c842286670f2ec. 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/SEPQA9508030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0b9da1d6f0c9cf46fe8499d8cf6827b9e47baf4a0a9b57de4577125301d1192. 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/SEPQA9508010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71bb4a17ac40e4d353948d2d85cb7d5e313613c014de19ad38e3dfc42d6e0672. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/SEPQA9533030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30bd103f9eb873fd65140103023eb8554973f1cf642fe0d65adf8261475f535b. 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/SEPQA9533070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29afee7f6b3ad86c7d29c8b139f4ea2c90bffb648cc82a5f114a6da3f5976e28. 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/SEPQA9508080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61f9d30958bcabf3af2f56f9a5ed32c693a657d8257bdc95b849ae0c3e3ce3bb. 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/SEPQA9533010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb6c2b9a7beb2a47313667af560a86097a6ec6d33c09c47bd49ec003fda0839e. 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/SEPQD9121100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cddcb925f005ec1f156fc0dc65355a58cf0755f20c0d1e9b8fd521e92666e6f. 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/SEPQA0005130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe6ec70cdcecf9c41bc252d387647610f7fc52b39b7213722bf7005256a138a2. 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/SEPQD9508010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ddd7c9483aab7c16d00f3f25bc18b29eacf97eb41ba0dcedd36f0586eb202db. 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/SEPQA9533020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58eefd05000c08bf995e5f251aa135700379d33e9a4a60723106a38b9b43cc32. 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/SEPQA9508060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79f1540b7cc9589be811768dcddc83b91d84923d7c5b0bd57f6fef609cc68b22. 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/SEPQA9508081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8edc7e81b711196b87ad1e269b14ff6e8d61ad89e4648f0f99bcf845fdafcdac. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/SEPQA9533140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cddcb925f005ec1f156fc0dc65355a58cf0755f20c0d1e9b8fd521e92666e6f. 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/SEPQA0005130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed81627f2e4c0b58a185e38de047bd2c27ceec19edbb2567d8e9e41b1dad6b0c. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/SEPQD9121120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed81627f2e4c0b58a185e38de047bd2c27ceec19edbb2567d8e9e41b1dad6b0c. 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/SEPQD9121120.