Proper Dos is an American hip hop group formed in the early 1990s in California, composed of rapper Frank Villareal and producer Ernie Gonzalez. The duo released their debut album, Mexican Power, in 1
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 0x5e0224a658c8df79e55aa51bb5b8894f04782b295c1e6f8b680345ba2b9b9302. 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/32b36379-852a-407e-8942-fd6f5804ab00.json and https://artists.proofprofile.net/proofs/artist/32b36379-852a-407e-8942-fd6f5804ab00.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 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 0x7d9fe0dacc0f5cb89b7076ca631733452c886bd5c7ad9ebb6233521008e9bde2. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/USAM70318503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50e00f0e19781acf56ceb409a01bd5178be6472c51a7dedcc324c58c17f2a6eb. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/USAM70318505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac0de52e9f5abf4330fdc9d45de441d08998118759034db7693e9d0f58207696. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/USAM70318508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e5346d172cf590c896512178b54f13d7c08836a7824cfccc6f59487cf8026ed. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-19T22:07:06Z), 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/USAM70318509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d5edf8078e999d79c50add77607f3178af1257b7b5da0292e1652a4ce01fed5. 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/USAM70318510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd995167ffed5eda1e01577fc1ca3fbbe4868a78ac3e004ea6d47b7dce542dc58. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/USASN1104540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a8cabc3479390323d184044b1f3ab9de4a06fe3de67a6ce21a6a0ea8dc6a8e4. 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/USASN1104543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2cf68c28d7a7203509daaa6ee615dfd179520b75c76853b3aa1a292e9705569. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/USASN1104545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8d753751a422ad7f21bfcf2f35f55e5073c568922e439a3e20690d80717433d. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/USASN2200397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22934bc2d9dd0947c1adfcd834d56a07721e807ce8ef93309ea144f70dfd8a1c. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/USASN2200398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91a2c656f8a1c1988f4ea8f3c4b9ce12ea6469b5c2edfcdcec603d62cf1ad720. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/USASN2200404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d86126be0d9864b9b5124c3619d7cf8d61e11afbaa9f6c19008e1007990aa1b. 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/USASN2200405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67498f9f095cd2cb5897acd113215a65faebd341641fff7e1fa86c959bdb5ce4. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/USASN2200406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9d8faa7404bcda37def5f86003efed81cf55480c9cc9fa113897a269d2f0d20. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/USASN2200407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01b92ac84a705ff5ddf8ad78da41456becf634690b701a5fd01ad32c53919f79. Chain 2 (Bitcoin): anchored in block 958325 (2026-07-16T21:10:13Z), 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/USASN2200411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c990bc06617236fac086e7a918e2b45e268fdc79628e9de4281eb6ebf5673c7. 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/USPE09000306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbc11e1865c4b12ff5dfd25f7bf6d289c21f18f37005e6fce21ef5cfa260d2b9. 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/USASN0800600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7228842260bd79b091565aa138c1a5ace21cf74d683b7005c1b9c796536252c8. 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/USPE09000451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae1690044e82ebc7efee4fdf5eba42e893157820f1cdeacb3f066076ce6eb337. Chain 2 (Bitcoin): anchored in block 960222 (2026-07-30T07:48:45Z), 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/USPE09000459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8910aac288eec45ad87c4c63b00bbbeb2b58ec898a61723d77fe272a2b052373. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/USASN1000410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5228c2d5d7239143907e8f92906bd9b9712fee3a652359cf810de532c1c12342. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/USASN1000427.
The Misadventures of Frank V. (feat. Ace)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf6fde39e3532a030ba0861d5cd891741eb9164151cee871ceda6289b453be0e. 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/USASN1101608.
Do You Want It (feat. Proper Dos, Lil Blacky & Rocky Padilla)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1119b7d17e19d420c3d019b9f96dbc42d9ed185bba65166ae65ce89f0627e78f. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/USASN1101126.
Gangsters Don't Dance (feat. Proper Dos, Ese Saint & J. Knuckles)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd044b3777e07ff4d1260a4ba49d7c5df8c292277ec0a868d54ae13c8222823db. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/USASN1101128.
Should've Been Mine (R.I.P. Remix) (feat. Nate Dogg, Lighter Shade of Brown, Kid Frost, Proper Dos, Lil Blacky & Sleepy Malo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08a97c8eeb703b44d689968c37ff0ef941687fc6af6d9f67e1ee0005522dcf15. 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/USASN1101129.