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 0x3f53d5aa4af73625e26341e90e2d243763d8d66b4873ab8e177b23b8bbb59603. Chain 2 (Bitcoin): anchored in block 953770 (2026-06-15T09:50:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a1c6121e-5af1-4a4e-9e77-b82edf012dee.json and https://artists.proofprofile.net/proofs/artist/a1c6121e-5af1-4a4e-9e77-b82edf012dee.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
El Corán Completo - Il Sacro Corano Completo
The Complete Holy Quran - Le Saint Coran Complet
El Corán Santo - Il Sacro Corano, Vol 10
El Corán Santo - Il Sacro Corano, Vol 13
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 0xef3f872186569dfc550d9094d65cde4c1ecf53cf4cfbe248a917cc7e5ed48f24. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/EGA130020303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x173eadf0a03adb8ad08233e792ceca54ae523e2954c422b065723731ae41fed3. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/EGA130020310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8f7773949bedfcc532538f893c0dcfd8bac61239f50fd3f1e043d409cc5c26c. 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/EGA130020311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x709d59abd269573e9506303ca551b03b288d9fe46bc9eb98c4d73303baa30487. 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/EGA130020312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a8e633d51d61ee0c6a77456142dde4bedb4be6694722f175b17546d0cb4dcf7. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T10:58:27Z), 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/EGA130020319.
El Corán Santo - Il Sacro Corano, Vol 11