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 0x5f225793606fab450c4180f6a18df61ad83e0a7eba4809f3f3eb86b30f4125af. Chain 2 (Bitcoin): anchored in block 953803 (2026-06-15T15:41:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e77b9235-aabc-42b8-b10b-b083786684ea.json and https://artists.proofprofile.net/proofs/artist/e77b9235-aabc-42b8-b10b-b083786684ea.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 0x004afb0297693b7fe65fc4d3fdbda950203b3c15d9aa65991e4c48e178de4d92. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/DEAS80900267.
Musiquarium Radio (Intro) [feat. Rock, Tony Touch, General Steele & Ruste Juxx]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x614c4f920f38b223ed0e476382407b0c301927d545a9641fcb5ed4f6326bbd88. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/TCABQ1398603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdebf46359958d9febf9c1c13af0c1a1ce407406da3ef71c03522c3b057a0ac25. 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/TCABQ1398613.
This Shit Right Here (feat. Ras Kass, Killah Priest & Kurupt)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa90c9a5ea3cedfd7d58daef013ef1a49c72a7ade52a5da11055fe851160db36e. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/TCABQ1398630.
Remarkable Timing (feat. 60 Second Assassin, Masta Killa, M Eighty, Papa Wu & DJ Immortal)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x288eb86c19ab2835dfc9ac4699fdc50b804b0935596ae07165e75fdffd1bb4a3. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/TCABQ1398637.
Show Em What Crazy Is (feat. Keith Murray & Tech N9ne)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x563a772e0d7bf20fe30b4ecde15b6595c4d738c926f5cbcd8004ceac2e9c047c. Chain 2 (Bitcoin): anchored in block 960164 (2026-07-29T23:23:05Z), 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/TCABQ1398638.
Treacherous Abbott (feat. Dzk & DJ Immortal)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fef084ef38bb63b416efb7129551cbe8258d50dcd4f6ac918b06ebc5b01e866. Chain 2 (Bitcoin): anchored in block 957048 (2026-07-07T14:18:56Z), 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/TCABQ1398639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x501b2a6539fa7f1a965f18ce2604b2326d01a5ac20b0c04634f4ad87ab163ad0. 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/TCABQ1398641.
Musiquarium Radio Part II (feat. Crooked I, Planet Asia, Copywrite & Presto)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x447e7c61e5363af289a9f4b287d56cdc3fb4c71faa1a0a603f764f116ffcd213. 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/TCABQ1398642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x019299cb31ac089df7f69017945a5bdcc5cccce239191d93d438b901fda0eccb. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/TCABQ1398643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72841117dd902399d3c56a0e7af88a883312b87a57c5f821ecdd8e2802c1b4ad. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/TCABQ1398644.
Pedestal (feat. Killah Priest, J Vocalz & Chopp Devize)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57d037abfc479c22e8afcac9145e7c89f941b6eea0d3b0173bae4d6cf2f51ac4. 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/TCABQ1398645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb59c8fb5b3d0bd1cf1853aff16009de13c0a463956d3f82cb878e521ab6d753c. 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/TCABQ1398646.
Soul Pie (feat. Doodlebug, Cat Shell & Chopp Devize)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9279432a7aa51c955915a94d6fbaa987ed7b898eebc295add7a52300dacb9dd. 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/TCABQ1398647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x785702fa83874367d657a556fe52f77db34b0187561c0137ebc58dc7b2c456ea. Chain 2 (Bitcoin): anchored in block 960170 (2026-07-29T23:52:38Z), 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/TCABQ1398648.
Musiquarium Radio Part III (feat. Jeru the Damaja & Young Dirty Bastard)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92be00aa2c19a0372858fa1c01d39dea1ca412e2499630a1818e8dc469e2990c. 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/TCABQ1398650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42430bc53d59602eb72bd2b419afda75142f502ef9319dad8a9fb6df5f7697bf. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/TCABQ1398651.
The Road Warriors (feat. Chino Xl & Damo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad0434c78ed52538ab84dac9ca06e51e94f1d63e353647ae2b94f9629773ac07. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/TCABQ1398652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd034f287b93256fd9e2b12ef8cbb66fc2229be7e4833978d7822ab0aae926893. 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/TCABQ1398653.
Drugs Is Drugs (Arch Remix) [feat. Immortal Technique, Diabolic & Hugh Hayes]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11e09e06314f20778e01f1e5caf7bf6ee90b3258d4ab7db925e3cc178725ae70. 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/TCABQ1398654.