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 0xfa7373020ca08bd58a4e90d8375e691303ac5056cbd1278fe37548d3741ee89c. 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/257dcf65-5734-42bc-a656-b92a5ccd3175.json and https://artists.proofprofile.net/proofs/artist/257dcf65-5734-42bc-a656-b92a5ccd3175.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 0xca161289dec4fba8cb59fd4c536f8777fed214b2c905336d3596f5ee96516ad1. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T19:37:37Z), 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/TCAHH2326626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b0b84383c4fd1f9e4c7b82327b5c329a7f7c8dcd336bdb32238c86f4a7f03e0. 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/UYL842400011.
El Telefono / Tu Principe / A Que No Te Atreves
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93153823622654642407f4ab649f421f7c4f06ee3669b4d4addf9c9fa7651aa9. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/UYL842400019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed4cf300750a7b25678839544ac7d301d76c8f9ae5e2faedfcad9ece5494e221. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T03:01:40Z), 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/UYJ142400004.
Locura Automática / Nadie Te Amará Como Yo / Te Quiero
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdda866eea9c76282d6f332b7bc892077c3d176da3f6437510fd89a68e21df3a. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/UYJ142400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c8e59f55668aee440ade9a569fb7187c1b9f3a757a15c94141012088df51b6b. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/UYJ142400008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a87937d765b7c80af20ba1e2a2e7eaebdffc4bd4f5954071d4e924b6786d911. 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/UYJ142400018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a58ea72f97197cae9e65e9b6edabd74f84d299c237fcfab8fa876a6e31f7b7a. Chain 2 (Bitcoin): anchored in block 958776 (2026-07-19T20:11:59Z), 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/UYJ142500083.