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 0xf52583b2bbd59eac296b44728ba4270456cd03af95501da734d38693afe4a967. Chain 2 (Bitcoin): anchored in block 953842 (2026-06-15T22:22:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/eec7d498-fa17-40bd-ab18-da0bad262687.json and https://artists.proofprofile.net/proofs/artist/eec7d498-fa17-40bd-ab18-da0bad262687.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Domingo / É Diferente / Beijo Doce / Nada de Pensar em Despedida
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 0x70c6f6c6909f2b576b980958ed60dbaf1eb0ab35a2ad735440e4a51d9e913bc4. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/QZNJX2541318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80f4b8c26e525363532f624f22099af72d842a890a37dc591680d84039a29ccb. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZNJX2551132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0854ffece7ef2a40a718b57070b4eeaba448f87c889060ae2cdfc93adf9ff73f. Chain 2 (Bitcoin): anchored in block 958596 (2026-07-18T18:42:38Z), 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/QZNJX2539686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0611eed08358bd44a9173d7024effffcc770a17bdf6d3c58e31625e2f917d43. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T23:56:04Z), 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/QZNJX2539681.
Coração Radiante / Compasso do Amor / Preciso Te Amar
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e9aa8d74b152f4f80b8a30de8d323d1d1f305d69623c93478774c27fdd2bad3. 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/QZNJX2539684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b2698665e2f800dd1d0a3b1a7edcba658280d2d2c32e68cd18903847176ba6f. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/QZNJX2539687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72a8d99e0f4e04a11de89f146e93b6ea20bc934b6a7b70e719731a34678ff4f4. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/QZNJX2539685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d3f86facc6cc2674c2e960668e32f4a164ad5e07421fc35aee9f8c9d86cf0d8. 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/BX60B2500018.