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 0x144141eb58641260895cb4453a9f238142950068f46d4025f9d302d56a1bbe29. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d5c95dc1-f43f-4f9c-8ce7-edd69c04813a.json and https://artists.proofprofile.net/proofs/artist/d5c95dc1-f43f-4f9c-8ce7-edd69c04813a.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 0x9ca05645a96d26f170971f4b0ae1967585373556d81f0302c52a70e89240500d. 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/QM24S1801065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x649a9f598983df815086b78cf1f28a3b9b734ceb63982b24f5a940cd57448496. 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/QM24S1801066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31606b67f32d8cafcec1fa9e2ec59cc771dc2fe98bfd1cb5daa65f4be6a1ac8a. 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/QM24S1801069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef8a1c61ed7f2d0db701c180f1f4f5f486f5e10b067a5b49799c38ad084bbb51. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/CA5KR1910021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bdead0eaea01220d6eeae58698fc09a6191e4faa27bc5cd0db34afd7d921abf. 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/QZGH81900087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9c4bdddde48726831855025567d4dff68f254c4ede7d16bc92d5828b3a0b066. 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/QZGH81900148.
Overdrive (feat. Eric Bellinger & OG Parker)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb6fcc4a828e512e5ac3a4ded6e9a7f2c8657666206c0761cd4870c5989e429b. 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/USLD91749220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17be99a5923833d24b72b18d01587a9ff56ec3cd5cac6f8ecda68caf6f27f187. Chain 2 (Bitcoin): anchored in block 958654 (2026-07-19T03:55:30Z), 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/USLD91754519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b02d069dd162d169fdc70f1b98b93d136f981cc0f58fd9ed4395976657b8753. Chain 2 (Bitcoin): anchored in block 958721 (2026-07-19T11:02:33Z), 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/USLD91762320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bdd77103284773d2e5d22392d28051c42bff02b034b323448f5402f81da05e3. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/USLD91762317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda2d00600a2e2686734ed4ef4fb5f97e225eb2e8ea15e73e80323e318fe63900. 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/USLD91762319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a5d8270a370822a07f0f0ac5de71f7c5013fb4df117bfad65b27820178a4442. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/USLD91779422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc85f31102903207a6cf649499f38f2239fbfe90359cae121367c8ff9e2420ee2. 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/QZGH81900215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33af8b500cd5382c8683ea48439a9da1c1dca4daa5fda8cdc642ae658547cac1. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/QZGH81900074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8551d1734286deb20ae17f255a7931839dd0d789322bf0f30fed9c2530bd5516. 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/QZHN62414628.