Los Donneños were a 1950s Mexican Norteño duo formed by Ramiro Cavazos and Mario Montes and named after Donna, Texas.arhoolie.com Bio They were native from General Teran, Nuevo León, México.Accordion
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 0x3757bedc10143e9097c81c41a3b918f930ddbee61d133587d28ebc4a1e2c4cbc. 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/06ecbd5d-8522-4299-b181-41257fd8a811.json and https://artists.proofprofile.net/proofs/artist/06ecbd5d-8522-4299-b181-41257fd8a811.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 0xd9871dd74b97ff3338f1e79845f6b43f1dec1dc939b1a20aeb061621a608aa6a. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/MXD781806777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e1e9cea3ca6b3648f393f40633494e0689bffbd17a517d71895b550ea96854a. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/MXD781806779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a870e90d1468f1067fc997c86ea294017419990e634ec8fb97b3d8c4ea161dd. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T10:55:36Z), 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/MXD781806781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x890ee320b2c8d41628226f2138f5a4c08bac3d7599e0be20a9e1db2520d15469. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/MXD781806782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb958db666b2959b943f15b03c0b4626bc965092d3f58174619880cf70a4361b. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T14:36:57Z), 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/MXD781806785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6929e44976a93996bb534dcc68eab8f0a1d7aedefb918bedc73bf1a88c8fd1b8. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/MXD781803686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a19c0452bbf4508fc9a5b498a58a011a0bc132cc0caf45cdf142398fa8c6d59. 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/MXD781803683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71c86c1d28e10ac57dfa38df1f78bd08de1a3d1e6680892d59788bd75a763f3e. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T16:30:45Z), 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/MXD781803684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7da1f30db2d55b85d7df9621dff6a15beea31a3c363801fc2cf222190df35c3. Chain 2 (Bitcoin): anchored in block 958371 (2026-07-17T08:27:36Z), 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/MXF067300064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7864749f6a690097d587e1e765f613b5d16c48a11ffc28f9311dce3519587d2d. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/MXF067400061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb54a9ca8a98dc68b59fc77a08a38fac69e6b5240f098ddeca8a6ccb73df0be54. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/MXF067400067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb28a8cf722dd32c11ccbf3b7ab120bbd5317d4f907fcf246dff32cde4ce43683. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/MXF067300062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa764dc0582ef3b2f17fe7e862859338438151b358c6872a44986b2c8116dd397. 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/MX3192305538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa74c2d967c878d30b9274275c8e86cdd7b5e34613b154c53095a5021c7489373. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/PL0B62357769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47bd65c1f34c634beb5c56da775e23bd120c6113cb210d3102302bd16054aa4e. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZTPX2402068.