Darin Alexander McFadyen, better known by his stage name FreQ Nasty (born 15 December 1969), is a DJ and producer of breakbeat electronic music, currently based in Los Angeles, California, United Stat
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 0x1f56e1cfb7e8e2966b2a4b108430db95e9ca05418c8f5576287b164b72cac5fa. 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/da6df70a-a386-4876-8a9a-07a271e6e0aa.json and https://artists.proofprofile.net/proofs/artist/da6df70a-a386-4876-8a9a-07a271e6e0aa.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 0xe6db0bb86e3dc78d41254753aa2f5f11cb17000976acf604ad3f732411c29c08. 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/GBBMQ0300107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x413d122814e03192799302dcf5173ad4473f3492a8cb7c57df3b0fa8e513fe10. 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/GBBMQ0300109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97983533cba374a4f281c82bc3bb048ecfbbca53b690ec9f76d7653b9944fffb. 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/GBBMQ0300110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe54d7ee35ac694092f45dbe1b792c874789b7830f4465316d9f46d10a06b7e85. 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/GBBMQ0300114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7446960f2b8f549f499a0052f74f45340c84a4485857626938346f6692364e8. 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/GBBMQ0300117.
Brooklyn 2 Brixton (feat. Kovas) (Freestylers Raw As F**k Mix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e45366b3168fb97773c4b0ae0252f51663118ed5b63eb781efc0ed9fca2b4f3. 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/GBBMQ0900303.
Not Givin' in (feat. Tippa Irie & Solar Lion) [Competition Winners / Extra Remixes]
Not Givin' in (feat. Tippa Irie & Solar Lion)
Not Givin' in (feat. Tippa Irie, Solar Lion)
Not Givin in' (feat. Tippa Irie, Solar Lion) [Competition Winners / Extra Remixes]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ed67108d06db86a8c0dddea4f140c6eaf4558658f87a38f90430789eb59fcdf. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/GBBSP9900061.
Hubble Bubble (feat. Chris Munky & Marf)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5a2c7d431db6729e9a68aaf43cde56ad3788d5b5b42bdd5a59cefa21e10d62b. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QT5X42500002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77217d03e3365a821f54606e22d362e22f77db3048d988910ee78240ede59920. 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/GBFNF0900051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd87ef87f103965bad22cbd9a1fee5a6cce99679b33986c44175d7d9998303a26. 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/GBFNF0900016.
Every Posse & Crew - Mary Droppinz Remix
Every Posse & Crew (Mary Droppinz Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ebb2e10f3f495247aaec6be160798aa510f5865645a2060d889c47d26076e2d. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/GBFG92400027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd87ef87f103965bad22cbd9a1fee5a6cce99679b33986c44175d7d9998303a26. 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/GBFNF0900016.
Samaya: A Benefit Album for Cheb I Sabbah
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3e22801c05464e5fddf5aed01a95777d5a665a3a5439ea18570a38b2215af38. 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/US6DR1101762.
Every Posse & Crew - Original Mix - 2024 Digital Remaster
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d34eac641ddd606de5d5acbeac9e224fd6b9d80baaf907a3567d58e9b160ec9. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/GBFG92400028.
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