Chew Fu is a New York-based electronic record producer, remixer and DJ, born in the Netherlands. He is best known for his official remixes for pop artists including Lady Gaga, Rihanna, Timbaland, Mar
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 0xe16e86fa18e61871729c390937baf98d30ba13c483dd4f353d37901bfaa7c757. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fa7056be-3618-4086-8046-eb030f60e2e5.json and https://artists.proofprofile.net/proofs/artist/fa7056be-3618-4086-8046-eb030f60e2e5.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 0x66e1a439e372e3da07b0f7a56dd823ba32c2b294ae9bfb241d24d9b86bc8b7a8. Chain 2 (Bitcoin): anchored in block 957826 (2026-07-13T08:56:09Z), 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/DEP081400027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d0302f34a5fda2cc90990a42690508dbe303dd9348f2b20d5b572b407e89fff. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/DEP081400023.
Greasy, Like Corn On The Cob, Mad Butter and Onion Rings
Stay With Me, Spend The Night (Robert Feelgood Remix)
Stay With Me, Spend The Night - Robert Feelgood Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7573b76736dccce795e760bad2f863e147d4d38bbeac46da2ed238e7777f7894. 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/QZ8GX1701498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3a2ba125463c7131e4e9a316f3fa557411241d2e08cc1c1e1abdf41471cb594. 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/USUM71011920.
Russian Roulette - Chew Fu Black Russian Fix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77ea996b52f803c54cb53416c45831c24c50e93f6b03e4ad6b762602190becfd. 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/USUM71011922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78f9143cd17c1134dd2ab371e5a5654ecd3e2f284d05ba5eb029580e497bf429. 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/USUM71011923.
Wait Your Turn - Chew Fu Can't Wait No More Fix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc148c50c15586aba3e44e4f888a0e690d46b2eac490dd3e11d160284caf432c9. 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/USUM71011926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ba22579301af3f65fe1d3afd21eff2849c0490f1ce3fed9fb0d46b549ac2278. 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/USUM71011929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x132c2bee375791b3069fc3aabde6e3e3d7d8d3522a3e0c67eb44ec6ccc6610ff. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USUM71011931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ae46e5fac50c360dcd6b7cf3f7048b9b700439141253b9eb2c2d7d015cf6784. 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/USUM71011933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9018964f06ad1629f157da8e1efc8b9a282fc4d373d0ecff32167678da124d89. 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/USUM71011935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa71c08dec356649481801e0b221a13c0cf6ff35eef5a26bca7e0eb881dd6247. 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/USUM71011946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b51a6b6e878b96f0564c82c0a10130ded6b82cd8035a6933db6a0ca4e10912a. 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/USUM71011949.
Coco Beach Ibiza, Vol. 4 (Compiled by Paul Lomax)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c9d6a2eebd46faa8647678024bb26c65b1f5d5b25f208f7ac6d999d78806122. 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/DEP081400026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70045709b1aa2c3fb6f5b5796f5de72531bf83005035d461c828f5d5ee3756e3. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/NLLP61100046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11c42f86db1a184853b7e1eabe6464a6175a0f23e41bde6afe09f93654b257d0. 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/USUM71008019.