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 0xee4cd7cf92677e8fa4c6c873a9047c3d016bbc7896f8452535a23f1d83d2e1be. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f5a2c952-e321-4b91-8d2d-0a6135ca9ef4.json and https://artists.proofprofile.net/proofs/artist/f5a2c952-e321-4b91-8d2d-0a6135ca9ef4.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 0x1595deb5c594addc842c325c347234542585b11716c98359232280964dbc0404. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/AR8FJ2300524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36076e9ffc04c859bf67f2efa8e4c7e6c9f2916664529cc88ae33794f9dffcbe. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/AR8FJ2300525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb5472cc0670a698e5a57997c8c5eab9f2094ead6f73de48204d3de5b855e870. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QM4TX2407461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94147bf0584a086b38f8d5b13cfd1df352fef834ab6e2d15d9e322345fbf8e61. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T19:34:45Z), 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/QM7282477892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd741a390f44d03420a8e92ebc1d32cf0401817a9df06faf73e1e3d46fba2dfd1. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T18:26:03Z), 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/QMBZ92408579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x274cd30fbbc28a0505a5b6a9162d1eaae443c2207e6414db5432b22ec2cfd97b. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T23:12:15Z), 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/QMDA62448841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f7bf72e7097c8d49cc908ab211c17e5fbba166e6e7f983a86e2377d61c73715. Chain 2 (Bitcoin): anchored in block 957868 (2026-07-13T14:56:55Z), 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/QMDA62460682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e5f2139171a8e6cee72636644f84434e2fb94d5deabb08072ae9609333c6592. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/QM6MZ2506710.
MIX REGGAETON: Lollipop / Parte y Choke / Capaz
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07b707b07d8d1bec5aabc4dc66f7e247ad067638881d6e50bc9766f2eba316fb. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/QMFME2506503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x082a247c4d359481c28599967e9b18c0b6544a5e236a7f83e2c73c8029140df6. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/QMFME2525797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50f93fccb1407f600aadeea91c9c154e79aa91c9cc66a98b4b04fa8ee90b0b20. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QMFME2580925.