Charles Chambers (Jan 25, 1971 – March 4, 2025), better known by his stage name DJ Funk, was an American DJ who pioneered the ghetto house subgenre of house music. Through the 1990s, he built a region
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 0x42c162682aaf0640e773e3df810e055ab9b1bff0bf929d0a5f2d9eabcdfb3651. 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/dd80e9da-d487-446c-8581-a7aa32639d2c.json and https://artists.proofprofile.net/proofs/artist/dd80e9da-d487-446c-8581-a7aa32639d2c.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 0xd15dc608630a4b82a9948a45381614ec229caf10bcc0bd499771f121a5b1f199. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/FR6V80067796.
Gold (20th Anniversary Greatest Hits Collection)
Retirement, Vol. 6: B.L.A.C.K. E.N.E.R.G.Y.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d56129a936e1771f868cf6dc48f72935543d7fb3989d2eb897ebc984d591e74. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/USL4Q2212523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e3dbed944507ce68154e27423eb2d06eb38f0dae33b41bfe5b27425e5ceec90. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T17:27:43Z), 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/USL4Q2212525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x156bc4f95884ee71c86fc6df56ff425de5de398b08def646368b721da00d211c. 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/USL4Q2212526.
Retirement, Vol. 9: Unreleased & Random Traxx
Retirement, Vol. 4: Electric Acid Machine
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4b6e58035824294ff6897e734ddc650818fb7751a8221b89386c3bfd58f4263. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/USL4Q2269567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33a04d9cc636a305d513f3ac985c9ba7ccf360417728c698a9bdee8577e586bb. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/USL4Q2212666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f8059e2d4147e7de42dabf38fc7727bc4c0806e8762bd4b4bbbb7ed6f63551b. 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/USZ4V1600241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb2a67ef390d44c3c75478a473516d0e0f3ddc23433a717e8135510ba539a7a8. 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/US75Z1310051.
Make That Booty Clap (feat. DJ Funk) - The Martin Brothers Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6d481210cec76166f18406999e7918ab7afe9c216b4f558aa390954b750e450. 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/US75Z1310052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81f64534e76b239edd6a4f04fd7644fb53ae11ab921f3368086118c4ead1efd2. 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/USDM31300148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0ff6d766848211560611c51f5b5a4c636d6737162043b53f652dd0e4302ad62. 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/GBBKS0000005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb0acddf811d5a40bde9bab8902e82117a3f6adb966d46698dd49287fbfffbc0. 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/USZ4V1600198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb0acddf811d5a40bde9bab8902e82117a3f6adb966d46698dd49287fbfffbc0. 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/USZ4V1600198.
Hardcore Traxx: Dance Mania Records 1986-1995
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4057857201607cd104c599a34d4688f4e64a40fdc55aa1bf88d4604d32fd3b9. 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/DEG931490910.
The Original Video Clash: Video Clash II - Street mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09f7cb839c3603a061976e792313e95559dd290a56866bb705882f963b5428c8. 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/DEG931490912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6f92f7de1249b231c82c9de68cda65ac8ba47421201fb60f427f3c8f8caf0af. 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/USZ4V1200116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8232d6e676a82f3cc72d25faab2698f61898e2393b00837cb833028f31a232f8. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/USZ4V2400201.
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