200px|right Pastorita Huaracina (December 19, 1930 - May 2001) born María Alvarado Trujillo, was a Peruvian singer who strongly identified with the traditions of the rural Andes. Her career began in
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 0xf5e315281cf1e76c950f1cb043a1e5c0d33e53de98098494cce485aec709d6e3. 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/be24f63b-520e-43a5-86c1-7e3179f73093.json and https://artists.proofprofile.net/proofs/artist/be24f63b-520e-43a5-86c1-7e3179f73093.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 0x4a3c6b3b224933bf35748ecf76ca0b86667526b873bd73a67f469f46b7d11c0d. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T02:14:02Z), 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/FR2X41550974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1febbef9973ecaefcb4def5ecb244a0aea7f7247cd2f523c116ae58dce233e47. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/QZNW72322144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d58e8dc8820a3504e1e4fb0e6a27270a449c457d86d0f72b9d1fe3afe65e16d. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/FR2X41550971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53ad88cde3533e0dbc71f8959ee6a66845de167bfda47775946d8d0ea9f2fc4d. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/QZNW72322046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe36caa6b92ef9619ecc39fe75ea1839d7237e4dfe1ff25835a9d64e1b7994220. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/ES71G2415923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5b4c4bbe0eddb138856524a405bb9312573ec31c28b89439dd306f06288da00. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/ES71G2141695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x303a69e54a7a80e3f02352fef53f3d9d02ce587c6b20aa80184287e9323176dc. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/ES71G1815295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7819b8d2cd201b6703051dd7ede241525b664bac212131b96a6b7173f812739e. Chain 2 (Bitcoin): anchored in block 959080 (2026-07-22T02:37:11Z), 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/ES71G1815297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc709ce9987137663a71db78bcb27916612a8ae2370a533fe0c44bf2dc8634f3. Chain 2 (Bitcoin): anchored in block 957688 (2026-07-12T09:52:21Z), 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/ES71G1815306.