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 0x0623cf8bf8e10e1363826447be7e160df72897c73550d60fc1e534bbcffc8af9. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/18676332-a996-4fac-af2a-aee54f2ca33f.json and https://artists.proofprofile.net/proofs/artist/18676332-a996-4fac-af2a-aee54f2ca33f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Los Del Espacio Vs No Sigue Modas (Edit Mashup)
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 0xfc5b6743921ce22f0808d53acdb8475e59324cf4844a296f21c31e8f5da60ca8. 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/QZAKB2402286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1f0e6d1a5c31904e35cdeff6a1d19ed7d16e6d45a079f1fbde6da18bc422d84. 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/QZAKB2409922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8eb36c14f371decfd539976fefb0ade5b1742ddede9ff00cbf92b314ed13d6bb. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/QZAKB2419192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27b79c5fc31c95d866e474be05bb062efa955b524c135f651735d105efcbb48c. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T23:05:53Z), 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/QZAKB2436982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcbdd01136513bd5c45eda37d07be8671d0e8631c0450c376904358b22ff2483. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/QZAKB2439530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc00d07080ef92301ae329058d346f4c0a88a4b8e8cd27c35a7c55ed643f5efcc. 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/QZAKB2517842.