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 0xe82136f2ce2a59c64d5c97c36fffcd8dc893de569ac93d41f0aa5a2be8b301bc. 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/9ccc3cb8-f093-499a-9a50-cfa033dbc38e.json and https://artists.proofprofile.net/proofs/artist/9ccc3cb8-f093-499a-9a50-cfa033dbc38e.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 0x7dfdced9981d067dec6eab44d050078a0521bb53da126edf1a80a834aa037f27. 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/DGA092469673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbef970ed677ed9a3570f9364f9a945b2d5b9a7f88f180d74dc53ac5da114022. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/FRX762436966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15380ef00ca712382a3d722e15942b9820b1e8208747125b7b6c0ec41e4d9d2a. 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/FRX282495034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf117faa02c584e2238fc443ad3a5d871ce319d3b01b3fc98b88bd94665cac479. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/FR10S2462565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74190006d93fc3aabe302a810d974d860acb90ce0620b1a5d67d546e0abfeb2a. 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/DGA0P2328137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fabaa382a0c918a68ed2956b2ba80ba3e850311793a63582eab3b0094395aff. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DGA0H2379939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3df20bf6c4a9b9f774dcd99a7a4e0029839732b7fb80202358abb417ed4c4fa5. 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/DGA082201565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19346d2a0721cce68fc0f734537761f2561f5501abb45c0c5519a47941c8bbe5. 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/DGA062244230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5495144b91fdd0d225b84b2431552a35cb97809dd2353330b13f6bcc18f78cf9. 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/RUB632200864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94d3c9641e444d64bf66d3e3c7fa69053d126edb411c898cc6474febfe989685. 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/FRX452240739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e532f3e6e3ae1bd45dd45dab40baa7b188b7fc8b946910e3f5aad6dd20a388c. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/FRX282224061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x201be49b41ce8735bbd2c8db04183c3916fcfc9379bf32b9bc7df286ad6cd853. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/FR96X2225978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb72a892ff16751aecc838a7ecb1259d2288037c2d526668cdce82b47c996731c. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/TCADQ1844910.