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 0x90bab9640495e223afd1743575a97ed8177c29a5b29d373e110d7270f5d7f840. Chain 2 (Bitcoin): anchored in block 953780 (2026-06-15T12:02:32Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d4a0006d-f0ce-4ba4-92af-515243a8c042.json and https://artists.proofprofile.net/proofs/artist/d4a0006d-f0ce-4ba4-92af-515243a8c042.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 0xcd37faf2db3f560f83babe199ac2ac6ac80835acdb2cde27b1034f4f77137204. Chain 2 (Bitcoin): anchored in block 960099 (2026-07-29T11:30:20Z), 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/FRUM71302411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ca6b0ba81afc672d69aaa68e6be877c76647506909ad07666e2360640bbc9f7. 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/FRP401700400.
Paris Glamour by Night - A Night in the Stylish Life of a Fashion Week Supermodel
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb697f112d57db324c4cd0666c86483376de3020a286e788f61036f25070dec6c. 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/FR26F0803960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2e07b8383456b9b9b4a3683fcdfb5dcc932e2f18fd309921da6951d15742ad3. 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/FR26F0804170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8200f0dd751f0fcd85e1a43fa7eb40a49fac4e5e5728ae429ec641111645f184. 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/FR9W11726334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dbcb2a04f3d6b89e42957d5011a46327cf1f99cb2ce6b42ab61ee621b6f0a60. Chain 2 (Bitcoin): anchored in block 960106 (2026-07-29T12:41:21Z), 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/FR9W11726335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x461cb570437e21b51e27710e1c42b465d0be7bc31c2ad18ab74acf8b0c9da1b0. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/FR9W11726336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e07350d97feebfb7f83e913e09100485a9dd53b170592726dc1d8cd1d5dbc42. 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/FR9W11726337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x076d856f2953c42730aa355ab10077e26a12590fd2edb730e7fc2eea634ce7d8. 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/FR9W11726338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26119adfbdfee527998b86b92d35534899457f662c919fe8204f7ddef48ab630. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/FR9W11726339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddf2b6e42211b966fb4002e064999ee00d11f02c2c06e813c50129b00a1b34b2. 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/FR9W11726340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48a5ce517e81cbf29c0e74fd099251845f909dfdb8d39b7153afb028ad1ed283. 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/FR9W11726341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2327774d651f2137cb73f960dc46430f14a686da79ec06c1747949ade418dac. 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/FR9W11726342.