Fernando Teodoro Valadés Lejarza, (Mazatlán, Sinaloa, April 1, 1920 - Mexico City, December 14, 1978) was a Mexican composer, pianist and singer, best known as Fernando Valades. At 18 years old he w
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 0x69f8d469c1caecce4e04df33fc61e0eb87b13a201a2fc7799afe887c24d70802. 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/ef928a86-51c1-4950-a73e-a1c79db8a727.json and https://artists.proofprofile.net/proofs/artist/ef928a86-51c1-4950-a73e-a1c79db8a727.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 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 0x8505f9aafd9a60944d1fac31a540cdb850f3e8b504a8b1130860e6fa403743a2. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T23:55:14Z), 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/DEXO52432659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86c7efc4d1625ebe51673af15d09ca1337ea7dfd33d6efd46ee52e413f4f9c97. 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/DEXO52432661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a1fd3cec6b7d0961ce705e3b89861e3d1535f4a0bb65da370a11fb7cd3c70f1. Chain 2 (Bitcoin): anchored in block 959091 (2026-07-22T02:33:54Z), 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/DEXO52432662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad1f091184fde7894346c69f866b657878e8a74e1f7087f571eb84dc1164d38d. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/MXF010001029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe31dc2496aa8422fc713350e613ee6f3c51f69584da8d873550c90c1a9aca314. Chain 2 (Bitcoin): anchored in block 957653 (2026-07-12T04:35:02Z), 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/MXF010001042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9d9a00bf47f2bbcd0b36c924ee9693f355046fdf0a6636788ed6af4df54df9d. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/MXF010001032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a9342dab0cee718dde8cac0f86837afd410309e641a7cc49766e0d2b8fdcb57. Chain 2 (Bitcoin): anchored in block 959076 (2026-07-22T02:33:18Z), 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/MXF010001023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6d7f8a3b9ea28e9722a1a22d730a1f8090fc33103b315d5626a74bf58e764da. Chain 2 (Bitcoin): anchored in block 958390 (2026-07-17T09:35:49Z), 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/MXF010001028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce5cb2920b5d6dc78ffe57729603334e1c6ee66503740986af27416335f407fe. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/MXF010001040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4290f5320913297493b9b3cde9c56bcd25b33e75e9c8261df91662a61c8f1bfa. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/MXF010001021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cb159c2bf26ea71e7aae1cbb3a783ee0b59fcec3bbcef9ff66757655a424d1e. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/MXF010001025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85cb6164f397eebf2f949029c768c8b0ff42d238ff55ddab7215d9545c5397c3. Chain 2 (Bitcoin): anchored in block 957658 (2026-07-12T05:03:28Z), 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/MXF010001054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dccd4b8ade5d1397cb16c45c2ba2b5986cc911c1eeee507771ef0c4b321ffb0. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T00:01:46Z), 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/MXF010001018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf4721e2558634f31a1723cdeba823e0193fdbb8f4d5dc48c58ccd4c31e89fe5. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/MXF019601574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x589a61252e9b6a6820b620dcb18e6610aae4290c2ca3d6257d915d90c4d30ae7. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/MXF016100771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc304f6a9fd5076bdb7cd9286dc46afa6cbaf4e5e0fcf7de120a8e3525a690d9. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/MXF016400592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2167d8a23cc521a158ec88eff36a9dc8ad6f5e6dfd36503c6ab9c7fb07ce65d9. Chain 2 (Bitcoin): anchored in block 958878 (2026-07-20T12:32:15Z), 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/MXF016400594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6003843df17a7ed3a7098d56e0fb4f4584a66c08f3b23c9936cf4de81d6f758f. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T00:01:46Z), 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/MXF016400603.
Homenaje de Fernando Valadéz al Caribe-Centro-Sudamérica y México
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6247b42a47fca169fb46f95b67fae346494fd5a87f5997cfbb8fee3ae712093. Chain 2 (Bitcoin): anchored in block 959084 (2026-07-22T00:50:00Z), 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/MXF016600594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c8d2c8ab2345c042a76702b7d6c4ca4cfcf6a57b6688c6006c5994af9792127. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-21T08:39:30Z), 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/MXF016600596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bf91ffc7d494af2ba9e1079f6e2162cf67f682810d1c8fec1bcedaba4edb10c. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:47:44Z), 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/MXF016600602.
La Inspiración Inagotable de Fernando Valadés
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ce48c29cb949e05f5fddb7aaed6ddec7d551dc9ba53a8359a45b61d9f9cdf1b. Chain 2 (Bitcoin): anchored in block 958822 (2026-07-20T07:04:12Z), 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/MXF016900443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ea1c737e7bd32c64e157909f77b4b8eda0d62efb9ca046730cb9a968d0c5387. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T07:40:27Z), 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/MXF010001047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x353869d301bc55f987de4a7cd159ac38d3d592c52739bb02b7c5f64fd7ed9000. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T11:08:30Z), 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/MXF010001049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa23944420494a4b4318084d6ca8c78047bb0fddc8e4d98e92f9b04dee71a13a8. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/MXF016800378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0e7306393c278c528a9cb1dce9f3f5728a14ec61cfa0fd9f4b4868c35d3568b. Chain 2 (Bitcoin): anchored in block 959109 (2026-07-22T07:21:40Z), 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/MXF010001046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa42dfd43f5a752be17eeb88bc6814f3a91f77cb3284f68169d996cac2c54e21f. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/MXF017000380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7e97cfc165a6a1f321bccc462a32d71bd7016354b870fbbf47098ebf3c58f7c. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-21T08:29:32Z), 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/MXF017000384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdda4b56a609885b26e479484bf397121abb2eed2735f03d441569c9bf1ea62a7. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/MXF017000388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69661be513917d81094064f6359b38aca382a810b1230b0ca22c54e0574b3409. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/MXF017900629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa779409101cb1cbb062d8a223e482d82d73c19d460715adcfb0724705477ad55. Chain 2 (Bitcoin): anchored in block 958830 (2026-07-20T08:10:20Z), 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/MXF016400602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf877298027a79dc2223679f7452e78ca842be6e23176ad8e713631724410c98. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T11:19:23Z), 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/MXF016400600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c18ee4553ba7e5700c059d6258797113c58189843377e4d7b2922c383748ea2. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T17:53:56Z), 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/MXF016400593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31dd1d092aefe2fcb0816f4ba6f2b59c73c4c523082d2fefc6e78a53f6e83c71. Chain 2 (Bitcoin): anchored in block 958682 (2026-07-19T06:17:12Z), 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/USJE61701332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac16b91309e2bd1853252368c950fd91095339addff66e6e3acce7a9c1381651. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/USJE61701333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8cb98b810bcff7d5de701033782363903f466ecb8a948ce1e7f28f01252f526. 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/USJE61701334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0357379ec5b693ae0f7278bd96678c37ab37e3467fe8e2dafeab0d796e79f890. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T22:20:36Z), 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/USJE61701338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27a8ac5a6c9d01f2877337c65c1dff95e2a5f3b107853fe0fb2b58c2b6b99408. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/USJE61701339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8940183734f3bbb5dcd1ff610580f2eff9952e05ff19fa661005f3f8ba8a7200. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/USJE61701341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x268be9fa5a7a6aaeb9c01b8c86bfe387578cbb8df0ffc4b59bde54471a14a5a0. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T19:17:28Z), 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/PL71Z2326334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24530b2a64c204293bf9b2902bc07d9fd28b99f9c074fa2e624b8e24901f6396. Chain 2 (Bitcoin): anchored in block 959054 (2026-07-21T22:49:24Z), 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/PL71Z2326336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f6ff1c62ce12a86abea8d73448c399f23d8b331a7a0a01d154c940e779f7183. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T02:10:30Z), 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/PL71Z2326342.