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 0x20b2763e78e3d068f3cfa7be6de9250f32c02fdd5e92ad6033194aeee42b67e8. 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/523838ca-dfcc-40d5-a9f6-2cbc10aa80f5.json and https://artists.proofprofile.net/proofs/artist/523838ca-dfcc-40d5-a9f6-2cbc10aa80f5.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 0x4dfd33663300ac4bb0de7d70d15747458f2e2ef8522ee5562dc565f709dbbc92. Chain 2 (Bitcoin): anchored in block 958506 (2026-07-18T06:14:51Z), 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/QM6MZ1964418.
Popurri De La Frontera (No Se Va/Que Vuelvas)
El Muchacho Alegre/Catarino y Los Rurales
Corridos UnderGround - Edición Culiacan Vol. 2 - Mi Historia
Puros Corridos De Viento Al Estilo Culiacan
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68ffad593fbfc02808fd84b72054edffa6d80d6f0b267101cb980fff832ea71f. Chain 2 (Bitcoin): anchored in block 960175 (2026-07-30T00:16:15Z), 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/US3DF2440557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f9883d2d56fa57aff19e19dab85cab2b33d53f6b205a7a45b990bc0adb45037. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/US3DF2485815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20c8e3e5afebf5b7be021aaa7ccad2d2771ac32f9248ea060388cd7492abba36. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/USANG2404153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x845aefb45960f61c202a9c1559ab3db5444f3f2601caae3b8c20f75ef8837062. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/USANG2404171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e1f73c96745d805ef33d3b593b2817669d76b35d20c0dee1e72d00910c4dc74. 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/USANG2489680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe13e4f17f26961a7ba0e743ef0a87a2a6b8a285956522977e01f18e9a56041f2. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/USANG2489681.
En Vivo Desde Hacienda Santa Lucia Para Todo El Mundo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2744f0d9a7ae1b5ba4ad458bd5c7419d8a91b7b031ae080ffc5039b7158b05e. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QM3DF2416861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde2d63cd2281242aca8ab60f94516d67ca28b1d2e6be2b06b1d8a7dc336ef396. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/US3DF2515263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb488e33a91b9657ba5800cda9a1fd9c09e237a09c48838ce48c2e9252ee9a29. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/US3DF2525741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x392a7603e47e2a9cca516d44bd08340f0170e2c016c3ffad76214e42c946aef9. Chain 2 (Bitcoin): anchored in block 959152 (2026-07-22T16:23:52Z), 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/US3DF2555688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec0fd7030deff099e279c3fa09fd2c4353b38aab88029977ca432e4749c9aa98. 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/US3DF2569749.
Puras De Viento (En Vivo Desde Campestre La Herradura)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfced76edce92cc1df0da26200622dcb1c95c4d2fd4c36013eaa05ca00c984d7. Chain 2 (Bitcoin): anchored in block 957064 (2026-07-07T16:43:08Z), 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/USANG2276456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x376cee9ff2fde362883f251daf43c6fd344b6cee69cfa228f87e2939406558b8. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/USANG2276457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb5e2d972cc0312a32eebdac26bda935a2e605e0da3929c90c6483fd134727bc. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USANG2276459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27f9fa6aadce4a407960661a6c34c774611544e13e53abe3b478c29b881da3e2. Chain 2 (Bitcoin): anchored in block 960268 (2026-07-30T14:53:07Z), 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/USANG2276460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec2006fc3204c7090152f94b1a0d21244b6feec4600e7d39724db3f7edb877a8. Chain 2 (Bitcoin): anchored in block 957039 (2026-07-07T12:58:18Z), 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/USANG2276465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6da7999cc1907bbc5b2ae31e90f753cf5ddaf2a03de84c4fdea6a823d8f15366. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QM3DF2285463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64cd821e0fb5bad7c7326cf8edb7b1bc3152cf9d487f58085e7710b0f6027e8f. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/QZDQH2369995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47d4d09185cc54095694aa986f4ebd307ce20f5fb7530fb04a8261acb4a5fb5a. Chain 2 (Bitcoin): anchored in block 960389 (2026-07-31T10:20:10Z), 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/QZDQH2369996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x380969260f864f2daf843abca076ae4ae9ce108bf2d78ee85eb5bde495c6a50e. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZDQH2369997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a81e0d6e0ff9972a95cef9bc2e090c1acc22a71382e3b6308b37eeca30c9bb6. Chain 2 (Bitcoin): anchored in block 960404 (2026-07-31T13:06:57Z), 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/QZDQH2369998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x969587e8f34ab53c2c543b501cd0972d500366ce20498b82718d842acdc15db6. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZDQH2369999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bb376def0896cd4ea63c38faa68a8b8836782974ee9f6c8b42ed4848de8edf6. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZDQH2370000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf2cce9894c3db5b18b59ba86c4dd82f80dfcd4cd821002fb02ae75e1b1c3649. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/QZDQH2370001.