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 0x49fe8900da81dee8f8d6feeab8b52d750be355342ce3ac6a5ebc80654eeb6dc2. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/70e84af8-6fe7-4fa0-bae6-edb42aef822a.json and https://artists.proofprofile.net/proofs/artist/70e84af8-6fe7-4fa0-bae6-edb42aef822a.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 0x196fc5d99c833355ac92e100bd80cb56332eda61b180943bd19d7b9359573b86. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QZDA81801265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07237c231d5de61805b3446c04dc444972a8b6969674904ba1133796bd77001b. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/QZDA81801270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x426f3513f20e3716d628fe378970ed51cabde724fc0cab48bafab34875bdb635. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T15:02:48Z), 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/QZHN42183705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd57e23d043720c37783bd8ee7835d9e1121c2dbef499da7c3abca20219fd1a8a. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T08:53:43Z), 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/QZHN42183706.
La pureza del corazón es querer una sola cosa
Tú, eres el que está a la puerta y llama
La playa (Jesucristo en Ti, se ancla nuestra esperanza)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec9b3fbff35254d3ba041f73097899a1b1cbecde1cce88a33b7757a3ed9c0e1d. 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/USA2P1557241.