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 0x017fcc535c1524c1b798c611f6418a407af40e849830db5a7a8dc3b5ab0cf1d8. 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/f00398e4-17ba-4561-ba84-31e335b92d2f.json and https://artists.proofprofile.net/proofs/artist/f00398e4-17ba-4561-ba84-31e335b92d2f.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 0x4bd355776da2d08ed0c70535b021d18287f254fe9c7b579cba52dd2e3bee3381. 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/ES8241624502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86dba60781a6db841530a7e089affbf5547905b45139f0706fda6acb886ca981. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T11:01:44Z), 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/ES5022301122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ac1d19fd04413779978b2453dcf8d09d948847808c458d21e7d26a12e1be948. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/ES8241624801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6210a0e6f51d70b773da1753e36c4665c2bc867c25ef249f61fcd8243942e90c. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:42:18Z), 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/ES8241624808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecca89002c3e2e74cb77ffb70d37a70a66ba5a29f6fd80c3f70209dd8878d5b1. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/ES8241624809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacbbf7c03227c40a18fc4bfbd4440b8115eaad26fc86c5205c59987b56eab9db. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T07:57:22Z), 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/ES8241624904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57e90f7dc8f5315b07eb505d856a3be4bec5f6d0efc0db7cfd39cc71851dbb07. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T08:24:34Z), 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/ES5150700001.
Takorce (En Directo En Carpa De Interpeñas, Zaragoza, 2008)
Ayer, Hoy, Por Siempre - En Directo en Carpa de Interpeñas, Zaragoza, 2008
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e70f78ec10fbc5676b3599acfeea827a7972282574750a993546c5c28437078. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/ES5150900044.
La Dama de Blanco - En Directo en Carpa de Interpeñas, Zaragoza, 2008
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdb2d2035a71007c2b53436e95feea292f487793360e45d84ad0aab45374a3f8. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/ES5150900052.
A las Puertas del Deseo - En Directo en Carpa de Interpeñas, Zaragoza, 2008
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3728ebe994152a6a28249a52805b623a3e970bdbcf7d9bbbb59d3a8897e8e2d0. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/ES5150900055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac34b62423544c351d626ec5b042738b54b26c30dee00e2a36043aa93ce3f872. 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/ES31E2300561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57de7eda667d81a362575ea69d9f31ca11b9b0a7d4c023f437660fb7e0878f52. Chain 2 (Bitcoin): anchored in block 958401 (2026-07-17T11:10:25Z), 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/ES07G1200031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f6aa9f446f56ce1bd5168fd53a33087ebb37ba0cfd43303f4b51928f9976135. 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/ES8241624201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5adbfdb6ba4afd252e0b587e2a08fafdd421812563d7a3a9b42e975dcfb6f1f2. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T08:49:34Z), 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/ES8241824205.
A las Puertas del Deseo (Remasterizado 2019)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99002c0d93ceb548ece4a8ffef5ce5ac1031e0ab5076e4369fd715afc9d1f220. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/ES31E2304855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0c21387e90a86b5143f1dd8015d72022373613b127ce49a242e6c12876ba871. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/ES5150900048.