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 0xfa6979b94e7a45b90719883e22c605d31a07d47df262ef06c696f734afd1358b. 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/2b518364-7058-49ce-9991-b5cfc887d8c7.json and https://artists.proofprofile.net/proofs/artist/2b518364-7058-49ce-9991-b5cfc887d8c7.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 0xb7d954288a5fd3e10ffc5c76e89131a56c56de69374c779115b32cae9f471bc3. 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/QZXLZ2501969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x317fcbd5713ccd730a6c8dfa2ab7b3509554c08147440d0a08898e1b79dea17c. 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/USFI20002448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bdb624890b35e6787a612f795a001ad64469f8708ba3e21062381170601a903. 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/USFI20002450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d93dc4f4889a82ffa08e810ea11d5aa0f913ffb3127ba669ac066244b00e437. Chain 2 (Bitcoin): anchored in block 956404 (2026-07-17T04:41:01Z), 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/USFI20002453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf78e80202e04879004254a680aafc78d1245c64e5dda7279f2aef049b310ae82. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZNW72360841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x534bcd63132b2de396eeca3e0c8e1903ab8d8a6844e082a69310258e4520075d. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/QZNW72360842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a5e6867a5af06acd3f14a076b0e7e57c2f6d03e4da8dd4717bae992e813a6fb. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZNW72360845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bf56698dddbfc53188cdbf08162a757707f8272723d21116b58b29c6e99d252. 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/QZNW72360847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x253337b61913deae7acb1f23b7afd845eb2bcb78c6ac6886e2138d698b710464. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZNW72360849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72e9d0a7e9fc10b6b2cd64965f5a813c39950c5730cb94fe7620c0e88b258f86. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZNW72360777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cb444175851d66c2fce7e6823261ebd87b3c33d3d0ef651756b79223340d766. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QZNW72360829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf058173b470620b1b77eff87db8b40a1c9a7e15c3b1ad713feb80829b00c5cea. 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/QZNW72360833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74749be58f5ffa293a3bab82d5a55e966029bdbb7299164e014df3c1866d7346. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/US39K1314902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x668da85afd242e7639fe7ae01e7f638d10040798d200244026ff35d978baeb7c. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/US39K1314904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a2754e7864f287235c02cc1b72629cfc6de1b77280ce9cc93b188a5b06d08a2. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/US39K1314906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed86ebb3b3fd147f766526fe826d8c011735af7a76ce913e6bd7bb286baec19d. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/US39K1012013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x944e1944aeedad307ae72454747d9b17efbc088537193970d103c13c45e3e40e. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T21:08:39Z), 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/US39K1232403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x820c55d745463e21aa438b1da70bf796ebc40368009e4fff7d79051a2a3e4af3. Chain 2 (Bitcoin): anchored in block 956859 (2026-07-06T01:42:12Z), 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/US39K1415617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7219ddcdbb9cc5388e839bfdd6b28cd55e33cf195ed09934d72d8d6e721f9f25. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T03:22:48Z), 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/US39K1415618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe164237f9091e072696815510e923b21121fbefd9cbc61055907a77bf27c027a. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/USDY42554523.
Y Arriba Zacatecas: Homenaje a Don Antonio Aguilar
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68eebf83db8b8563ed7750009de29f6d38a9fc95dc892b09973bdaee72c869da. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T01:47:19Z), 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/USCGJ2559010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc3a6188e04d9a4b5883d77f156420fbb3070e5b474be35c7c56e3c9bac8ccb6. 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/USCGJ2559013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc70536ae4d6b1bbcd8794ba5eaf32898d565f08ea79663c2f0014ede9ba09943. 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/USCGJ2559022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2577a2924676e025d27e26fa901e2a68b5682e010477545045ca176ddb0f23a3. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/USCGJ2563283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf703638ad68cf2a92de8f888c584fd9a3081c4560a09f31a17d9a485048280d. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/USCGJ2586841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a5bcf8746c15cdd8bc61debdfd89dd532f3c838cc3f61ae822cf45a8931a012. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/USCGJ2593367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16e976f08d4ad9efbc724feda8cb21f5c1959a2136d3552d65ea9245cfd519a4. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T16:40:43Z), 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/USDY42507893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa6422bfc412fedb7a10e667a249241a4d666b8d1de8ba0fa26588208f6ac52a. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/USDY42569972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa67484bc6b2a2d53b8cf3e432c76206ae5405ee7f7e3911ffdbb0099494631c6. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/USDY42569974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02cee46d3db81471c27281babeb5d256732dd9418417b4b59d800217714cdc7b. Chain 2 (Bitcoin): anchored in block 956748 (2026-07-05T05:55:59Z), 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/USDY42569977.