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 0x6c02a1b89d69e2a537ffdfe20406c27edea1e4cae573562320267d6dcd2edaa3. 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/269c81f1-0df2-408d-a224-b9310428c4cb.json and https://artists.proofprofile.net/proofs/artist/269c81f1-0df2-408d-a224-b9310428c4cb.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 0xb3b10795763314b14ef7a4f2e81ed1cbdb711a3415145cb768514673690e4da2. 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/USUG12105578.
Midsummer Madness 20 (feat. Joji, Rich Brian, Higher Brothers & AUGUST 08)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1e2e2a87640e261513a8ea7fd49c69a0f21f881601f17bc99e435a84ab02a74. 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/ZZOPM2002987.
Midsummer Madness (feat. Joji, Rich Brian, Higher Brothers & AUGUST 08) [KRANE Remix]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76dc9bd23cafaf924649c9cf96643b59197cd06dc06f184a129682af3a366016. 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/ZZOPM1800647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8e18626f7d105003283bfa6eeb9f0c180193d3060843aefabfed2d7e95ad15a. 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/CALVP2091429.
Talk Less and Feel More (feat. AUGUST 08, Barney Bones & Psy.P)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3096360bfb9930eeacbf3b4b9aac8623ccb9c226ed26a9a45c4b5efae3349857. 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/ZZOPM2002239.
Wash My Hands (feat. Marc E. Bassy, Collett & August 08)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdfc85aa13cba7abed21a2433d9f5ee9b40d5ccd5a631367017d9a44f599c134. 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/USLD91725458.
GYU (AUGUST 08 feat. Ty Dolla $ign & Bino Rideaux)
Snoop Dogg Presents Algorithm (Global Edition)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f58b5bd5f4256d5dcbccb6f4a80a4f903ca03dabe95d7c5740325c5d293683a. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T14:03:35Z), 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/USUM72121182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81f351696f38c39a68c0484c108f0951cb8f2bc4297346de72051bfcd01e7983. 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/ZZOPM1800318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b1d1de9db478ebd1e733769ead6a4aa8737b025800b1ea38a01303e870c239a. 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/ZZOPM1800383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe384bff67bbf101bca6fd06972bd48ff243d4774be1383d89557a53da55333d5. 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/ZZOPM1800384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc2034729c0345bd50e57ff34930966c31ce39911965f96fc4b30e084a8db09b. 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/ZZOPM1800385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd118b534ca4c4fe6599ec0a27aa8944df89fc1b6b0bab9aba7b2dffa609b3fbc. 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/USUG12105600.