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 0x7bddb7fd0152ef81aee280b8a9aafbe44b504807a43033c8ea62791c3b819320. Chain 2 (Bitcoin): anchored in block 953678 (2026-06-14T19:23:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/644a4a1d-b953-498a-b51c-e86623469941.json and https://artists.proofprofile.net/proofs/artist/644a4a1d-b953-498a-b51c-e86623469941.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 0xcf65fb93b4e32663200e67fc13b5874bd42d1e5fb9221127c54783e05dbd2c5b. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/SEYOK1821718.
En Concierto (En Vivo Desde Santa Marta)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86a770f684be48d20fc3171b0f0ab750220cc0d7562314376bbdeca1d6cbcf13. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:39:07Z), 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/ARHXW2105070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4899bedd290f458f0bfca8d7968b3dcad29950d42b31141a4dfa2e7f257c44f. Chain 2 (Bitcoin): anchored in block 958627 (2026-07-18T23:33:54Z), 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/ARHXW2105379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dcfce70b6c7f19bfc2021e93fdcdd9194df2b224e4bf5a706f434743fb64bac. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/ARHXW2105384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45548a98996fec2ffbbad4edef471e1a8900a3848aa6243095db85b1da2ba791. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/GBMA22372486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb65efb85715105912cc8d62130de5889065f9d6cffd5c8f0ac175300cbd0fdd9. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/GX53U2474151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bee03b4118144ccbfbed489669d1977ed2e676f13c86e4c77cea1f6e837587f. 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/UKXN22557825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cb44a9b0be9490a6a06ccbf7b2df3024d38d9a3fb7ca3c2b0c427aefb7cc37c. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T16:21:50Z), 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/GX3Q92561017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x216f74fcbfe0ac94ac332ce0ecb6765886d388c40c456f1d35818658103f28d0. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/GX3Q92561021.