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 0x7d4f9e7f80c16df5bea6ed2b712c6bb0025054ae1afbb12e707ef3a48cba9408. 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/97f627d2-02e3-458c-b18b-468d663764ba.json and https://artists.proofprofile.net/proofs/artist/97f627d2-02e3-458c-b18b-468d663764ba.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Los Acme Aqui Y En China: En Vivo Con Tuba
El Bueno De Los Acme (feat. Grupo Maximo Grado)
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 0xf87a78cd8a5cbdf4b34f1fa679d0a5615bd2d0ec8d25b7cca8d5de2283f3f924. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/US3DF1722269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b3c6e55107d74db8d1c562237f8ebf2fd0be4d14216c9d72b09278c674f760d. Chain 2 (Bitcoin): anchored in block 958501 (2026-07-18T05:33:04Z), 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/US3DF1722273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc41e3a68073340f60e331b9eb27450eabacffd1e9c7855b2ac04d0c79c243b17. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/US3DF2014903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5de37e94cffd379915ccf8e6371d5bbf51daff913b3c3592a2c4a88727493fef. Chain 2 (Bitcoin): anchored in block 960163 (2026-07-29T23:20:38Z), 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/USANG2134574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e3b3f02a156104d4509d57bd06d0bac66b97fc6784d8057d6afb3c190549c31. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QM3DF2253203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x892aee2567c57a061ea001ea7a36f958af207599442ba6d9f89766f63961f11a. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/USANG2403013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf307af7de6bb3cc6de5f29fdc566232a8a28f61a3df11c857fcca0954f63e34e. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/USANG2416559.
La Roleta con Los Hijos De Hernandez Ep. 02
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c606534f74495fa9077e19008cc345bfdc97bc7f187d0d2510c8d75f965db0c. 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/USANG2416562.
La Roleta Ep. 03 con Mariachi Sol De Mi Tierra
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18390f0ae5e7be99dbe188de4230ac0ecbb26a9b1c7fe5d0e975293363cef596. 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/QZTAW2228978.