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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff80845800a0afc6a98186a073f64af883c94d32d26e4a73b83bdfa7249cd2d0. Chain 2 (Bitcoin): anchored in block 953596 (2026-06-14T06:21:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0ac0cb8b-8895-4ba1-9ad9-2ddd65429e34.json and https://artists.proofprofile.net/proofs/artist/0ac0cb8b-8895-4ba1-9ad9-2ddd65429e34.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6a0926429c79d983d3129b9dd9b4e3230e39e524f119e44ed1c843bcf13ca02. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/NLCK42233220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x216a412511bcbd0b09a4cdc9ed73711f4c361392bdff68f67e711ccc350baec6. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/NLCK42233223.
Never Come Through - featuring JAX and Allay
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6658c074f01e2dc3563ce9898f2bbb59557da20bcb7d2be7b49076d5893365f6. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/NLCK42237577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5924f3d88bed098928fa50aa0ca7670a1d6b69c1264c78cefa3bf85e592c4b5. 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/GBPWR2100103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0361add782501b1f6d6b14de779fbe86ac1a1a46a22cc0789d21d0593e60b06. 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/GBKPL2000314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d15eec4d4ed5626c870113d537eabff046e108df395be2a7eb16a44356d4c4d. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/NLCK41057760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d6969dee4a30259ea7f6086ccdb13acb43b4f6a7fc753bbeaaf66334eb693de. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/NLCK41057762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4827d107bed1570ace8e85736ab7a9488fdf057d518921e533988b147fcecb90. 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/GB8KE1950605.
Holding Me Closer - Random Movement Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc27077d161fe6f297c4f42934ea47044a696a4db307c16916aa5321dc3004723. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GB8KE1950606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1f4c48dc21a950b124fdc032b30c79602c21fe525281758f01ec9b1f8a74bcd. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/NLCK41047844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0192c7555d91a641ad32c7bf2dbc7dc436f360708ca47ed75b31dd54fc283387. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/NLCK41071929.