Curtis Williams (born January 19, 1976), more commonly known as Spider Loc, is an American rapper and actor. He was formerly signed to Interscope Records and 50 Cent's G-Unit Records. Biography Spi
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 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 0xefe4ec18af496886d8804affd7b680e1d20d74f33c5120d133885926e678a7f5. 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/721a5df1-ef44-4040-9f9d-f4e46a7684b1.json and https://artists.proofprofile.net/proofs/artist/721a5df1-ef44-4040-9f9d-f4e46a7684b1.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
I'ma Problem (feat. Lil Nate Dogg) - Single
Im'a Problem (feat. Tiny Bkully & Set Tripk) - Single
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 0x212042505d9ffb916816b6b27a1fe29754eea097760c0cd1292e4e08382cbcd7. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T17:53:56Z), 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/QZDA81873183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8909e048dc93555cc2cd1fbb794fdcaf4759c623fc6245ffa1bf24c4c46b0931. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T09:14:08Z), 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/QZDA61956376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e7a747d2a4b30244d515a8d4b7721c068a41493748584f5e899c93b8ff927d8. 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/TCAEO1970667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ca01e7a1f706d54b12fc5155c3aba9549631300df3340caf5e7f5938e8ee7fd. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/TCAEO1970686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45f091e5b2c80984f809757452d854733d4619563e5f1a5b1ee0ccdce7756648. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), 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/TCAEO1970705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02147b978a1468e95c629576fadcb2c278e17c39f55a04c768b2850c3a105b0e. 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/TCAEO1970715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaf052ec6991668f2289cf990b5a64f1a8290e3b9764c7c21d4227f414519870. Chain 2 (Bitcoin): anchored in block 957876 (2026-07-13T16:00:32Z), 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/TCAFJ2184038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd297fe563dd868afff8434f680c4303fa925232ce8e33ce7204a30da5ead4b82. 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/US38L0903162.
My Life (feat. Fas Action & Nipsey Hussle)
B-Magic Presents: Street Music Compliation Vol. 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67144a9c33cdf688644faf4fb6f4a361934f2d9906da14ac8134836b16bf76a4. Chain 2 (Bitcoin): anchored in block 960183 (2026-07-30T01:10:20Z), 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/USUYG1059403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90e807fa2aa5b8563429fac8025433d738b6f28f141ac11ce8e68628dfca3787. 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/USUM70500086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11096d9ec9a79c1f18aa4fe2c40cdf1f095cdb118f6efa2ea9d2226e6c2572df. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/QZES71953287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x475f96d403432a97127601eb25fe2056692a5b3007c5aed3ee99c1193c6df386. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/UKDNQ1534836.