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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9524fb86df972a1f675d8cdbcf1169513b63ab365833e563f74868cc7485bc2. 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/454762fd-7efa-4445-afdd-1f92f68422c2.json and https://artists.proofprofile.net/proofs/artist/454762fd-7efa-4445-afdd-1f92f68422c2.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1ELOYYY 2ELOYYY DREIKO ESTRADA 3ELOYYY PRODPAULO MINGO MINGO
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4504dd92e8db69e402da942122164f117bb5e55de8a5470fc04d0c1689db7b9. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-19T22:07:06Z), 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/QZNWT2410302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6df3ccc5927128909fd59da41249c99859c6a572aa36565b09168f482c6c92b4. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/QZTB42459220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d72d591429f50e4ad31f9b0c5f44b36bdd4eefd11d3297cb1cdf019cdac871e. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/QZTB42459224.
EL PRIMERO EN PEGARSE DE VERDAD EN URUGUAY
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2641669c1f3d46e4c44b25056d0ca99cd09d38c6e6abadfa63b77e2d4a72c90. 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/QZWFL2498912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33330c2c5ba55d4ee81a21fd4abcfd34102a0a4a96b00b8bad9c4bc198068887. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZWFX2419671.
CON EL DUKI EN SAYAGO Y SPACEKID EN TEMUCO
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbeac69711e0ab6d0910c3e3948df63b2f6f9e2c6ba65d5db0a5741161366e22b. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZZ7S2462976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f01758d39369b5d53966edb0104ae113e8e7ca6356a11495007e5cddc94d906. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZZ7S2462988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12760f71ad72e48a427c342e436660b303a37098ec958f905115d72b2192bf9c. 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/QT3F42424746.