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 0x0032ca40f6262f81754dcc7df284e0a04974581c7f0617b14d1171d444deada5. 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/d9bfd244-963a-4c02-9784-e9a847ebdcb3.json and https://artists.proofprofile.net/proofs/artist/d9bfd244-963a-4c02-9784-e9a847ebdcb3.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 0xf90b2863799cde41350ed90b4d28dc0b675ad4764011cc2f24f7210bda815aec. 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/GBEWA2102790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x284ad7f491c1a45f0e28ce5ab8f665c985661dde080cba091e7fa33c7d7304d5. 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/FR9W11610792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fb72aa818e5ae7957d64ccc16cb5af1ae7f3730f6218193c996f897df45d529. 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/SEBGA2000408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0a1102597c1e7a5f6aa8e9e6948b37da8b8fd885619668bdc08d97b8f01789a. 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/QMQJV1700118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x284ad7f491c1a45f0e28ce5ab8f665c985661dde080cba091e7fa33c7d7304d5. 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/FR9W11610792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbab8d360f8846bc4cad09aa77550861d9e16a18cfaf12d2b2912c5b6601b0b34. 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/USUM71505922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fa4aaf18b15caa48cc12b084a4fa9e8c347398b134f6ab1730478d3f1def74a. 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/USUM71319753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x868624e306411be268269d9c9c250087c06da69321171a33db80124e4ef1dff3. 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/USUM71604078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbab8d360f8846bc4cad09aa77550861d9e16a18cfaf12d2b2912c5b6601b0b34. 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/USUM71505922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fa4aaf18b15caa48cc12b084a4fa9e8c347398b134f6ab1730478d3f1def74a. 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/USUM71319753.
By The River - Adam Trigger & Provi Remix
By The River (Adam Trigger & Provi Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56ad09144668e70e488f6821ac627387f12ff5655802fa4914c0a9ae183b6193. 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/FR9W11909129.
Four Weddings And A Funeral (Music From The Original TV Series)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd24704346a64031982920f58cd322e9a0c4b44a876939582e77a46241d374479. 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/USUM71810640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb92d6020ac1fb63a22c2dcd9c20d3d5908e842fa8d5ec15551ca2050221ad64. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/USUM71216294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fa4aaf18b15caa48cc12b084a4fa9e8c347398b134f6ab1730478d3f1def74a. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/USUM71319753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a686814b30b7a81b9b2465363efacb9e879ac236dbe00fefc6843fe92492e4c. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/USUM71416919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fa4aaf18b15caa48cc12b084a4fa9e8c347398b134f6ab1730478d3f1def74a. 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/USUM71319753.