DJ Jean (born Jan Engelaar, 7 May 1968) is a Dutch disc jockey. Biography He is most popular for his space countdown themed hard house single "The Launch". In the past DJ Jean performed all over the
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 0x909b0b1a4df742bc5778cfa4ab6010af6882195243f67a2c73aa2f4380620ad1. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3b1aa49a-7600-4bf5-9833-7c7517806624.json and https://artists.proofprofile.net/proofs/artist/3b1aa49a-7600-4bf5-9833-7c7517806624.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 0x73414e68ea59c93b1c8d9a04b137c48b8a130027f8d5244c1c753c6d5ed348e7. 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/DEPI82430928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd59e16cbd7e7632677548ff0a39810850b2d150344c7a8c522da5c642d8d0c2e. 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/DEPI82415917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb37e60bb790a219a15c423bde17007ea3a944974e087f7847fa6bfde3509c28. 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/DEH742404843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81debe689f4ba64e605a1b5335f396bd6471955bfcc35e24a63928810a5f95c4. 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/UKU932300503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f9cf5bfc3a10fb9227273d3cf927ae24c30832ff63c0b6619b9fb533514bc54. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/BED902300201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd15b3cc0d7307a5855059b0a98bfee95bcf7b943c11766ca0b2f25ecb1d82ca8. 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/NLP432100086.
The Launch (Shaun Ashley & JustJem's Apollo Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbdd61f6e9c989b9f0978cb40ff626957b0672e68ed0d10652858cf2f5e67c48. 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/GBNAR1900068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a19988c8ec0761e1e4d7d2ee678048c52bde12e3062cdb740195e7c636f9bfd. 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/NLQN71800230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77560ecc3ab49dd681b477eb18abdf8f9654d3c57243ffa6a21cb0a863bd715b. Chain 2 (Bitcoin): anchored in block 960164 (2026-07-29T23:23:05Z), 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/NLQN71800229.
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 0x8b2b3a7b6ec57455ea71210404072e3e78c8531c504c9bca500a9a2fb78c56a9. 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/NLC280910592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74b1df98a44a5eb109db1d66b2a72d6a60076525153b0da4d25126acb0bff5d5. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/NLC280910768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0e1d0b8eeaf120c46062753788755bbd5af8ec27b755344b7964be16fe7d62f. 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/NLC280911276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb05324cef9eeec75a5729fd81b2323af43e4eabffcb054bac834950debfeed6d. 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/ITZ832015280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab90d8663c4c8a9b523e5f866a1d548cb13a935a93dd49c2ebc5422f6455cc26. 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/GBNAR1400055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d1dfe1b86226e10b3c897d1820f949180046183458336d9488c9c5f9073f397. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/NLP431400046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbab6a757ceba8f315e18dbd0827d62d28d42fefcef643df3c0c097a13dfe08f5. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/NLP431400039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a3748fa9445408e58194aaf5d5ced8633d32d92b139201067c5775f86027d64. 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/NLP431400040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeda38e22f0212fb5b591e31b90bffbbb782acdd92c3ae7b8b995f073de349274. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/NLE801300215.
Yo DJ! (aka ‘Papa’s Got A Brand New Pigbag’)
Yo DJ! (aka ‘Papa’s Got A Brand New Pigbag’) - Radio Edit
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2a026c34c2c8bc3acd855322a0c973613a8a3fc8357b6c722f59140eff8d8c6. 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/BEN581200737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa39cccb03af629321d2338b338935f96bf7285cef92c2e4bbfc83ffbd32c45a6. 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/NLAM41100586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77485669cf498ac71d7becb1b5d1c169c954731e2105c03b7d966909cb7375b9. 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/NLC280910279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b3339bbc60831ef48e9673648e514075c5d9ed5a492d6a0561cff14ab760a45. 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/NLG170500030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43b067e6dc5d69d3725d98daa5eb54d88f81afc4b54ac703a5e00311a852327e. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T07:18:17Z), 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/NLG170500031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05970819217978acc883ccc0710c2b3023c3e6ec63e40c80cc89c0b69c8c8f9f. 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/NLF712406707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd65592855a60b162b8c3756652eb59377de0ff2be81e7804e876364ad57eb0de. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/NLF712408454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac172db41bfa32539395aa81c76e7275f6b642f27020fa686f88d49758bcb0ba. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/NLC050300226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f53589501886bfe084b5419899409d92a1c3f7784904261045da66bec93a479. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/NLF290700310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02fc7e2c6d3cd3c4988636ebb108a2409a12fe2959486092a0aeba8acc0380b3. 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/DEPR31900457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2980329c7436c526efad153328f12d0bb14d3df716eceb7b7c7c91ecb64e27a. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/NLB770100091.