Darrell Wayne Caldwell Jr. (December 1, 1993 – December 19, 2021), known professionally as Drakeo the Ruler, was an American rapper from Los Angeles, California. He became known for his rapping flow,
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 0x19b1c833c559bd076dd34cd696203fb33983c1c11e5f1414ed7f7f7fe365ec24. 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/ae45ea77-feaa-419c-8e78-5fae018ee6ab.json and https://artists.proofprofile.net/proofs/artist/ae45ea77-feaa-419c-8e78-5fae018ee6ab.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 0x71284ad4db08a016827c056cc50f6d1205f25a8a22455e1ba275e9fd67de9833. 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/USUYG1389706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf0a00f4baee903b7a8f5d7ffe77631ab72b7bf20479a15beb5fe2c1d42f0484. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QZHNA2182766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e2542731f74a61932238fc09974bb98afd29c0576b74cc78ece4566fea6a4be. 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/QZFZ42334228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d0692eec835e3f27dec211fa85bc9146f681f22a42793ba60f515c25f4ff520. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZDA72155912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90457002641dc480e69b4490486dfd6c1e7be8261ec7dec7f0b166bd9bf20ef0. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZQAY2119017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x086684b256e5e3a6b852d27d771a8343d554ac789e65127e27584416ae18afdd. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZRP42334756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bc0bfd6cf6eb7d90a3100ac2c429018611a5bad36ec3c1a0d34908636b2a9ea. 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/QZDA72155909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaca0734f8a1ff3053ddb6a2d166aad3abb0574e6bd05b8c38f2938c33227e312. 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/USAT22102042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93b53e30d80fa367051b97079792abb4966394b06aa7900a04a72c9ed4deda17. 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/QZDA72155915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb51062d2faf8694ee92e5bd9f23d85fc785cfdc3812b35ba52bc8a0c9c070250. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-22T01:21:26Z), 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/QZDA72249021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2c3ff1d154d9d4a3aacb03cd8d2c44f1f7b7cd57a698bc00a0b727790fb48bc. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USDXS2100768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76d6826a171dd3b021ad1c813d48b0e8f67ce18c870fa7389abaa40daaeaf893. 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/USUYG1140711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc57517fb86770b5e96569e0fe7251807530340b9ac9987fbce5aa3f66c227044. 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/USWB12101083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67fbcfad50db2197116b766ec41c65d72ecafe8434c7155c925ef669b0fc70b2. 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/TCADW1805017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x615fe2f40d5882a12633acb6295e5b4cf8af3b485596706f1290737c8697af09. 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/USUYG1362730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1e8dbf3d8fc10d327e5f7de099c65d9952f2a4a1e5c461b5906c4072352ae09. 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/CA5KR2310524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x615fe2f40d5882a12633acb6295e5b4cf8af3b485596706f1290737c8697af09. 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/USUYG1362730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d7a375330f6a997b485416c29ddeb48401b968236cb8b43d17850cde7bfbcfd. 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/TCADE1716541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8ca52c590acf4f57652c9b9414b8b7621db49770653b2daf8e8b7bf6f3f4825. 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/QZWFK2372452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14c84bb793c4c5ccd76d62d893df5b11bf6850de5df27d1bef4d57361ccc18c9. 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/QZTAW2332626.