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 0x3d93ced3f5a2a180fee7aa14202fff0b9b152227b394b67772f59cc619693b96. 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/4d9d58c2-3f9c-4459-b23b-ba434fdac753.json and https://artists.proofprofile.net/proofs/artist/4d9d58c2-3f9c-4459-b23b-ba434fdac753.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 0x8464db07f84eb944551949707586b562195600fee290812b3de9143722f2f1d9. 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/USA2P2547955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9523121cda028facb81456e7aaa47b49164c6fd6a229cd9b62279d97160b72e7. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T05:33:54Z), 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/USA2P2547961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x147064446e026e7fc58bbe3024d739a65082ed5b6d36be139aa3d3429ce6ae3d. 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/USA2P2547966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x888a8e92095b1182fbe86030cf7ddfe5a4e95109a6038788724d7d15f5a450c2. 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/US3DF1211512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x252a7f0f629a0990eb8aa4aff85af43057f4de913faa6171b3e151335fe79bd7. 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/US3DF1211513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33f6f889bf869a24abb0d99e89a5d89b37eef4f17fa59e8625c2f55389ca8e94. Chain 2 (Bitcoin): anchored in block 958185 (2026-07-15T18:19:04Z), 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/US3DF1211515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30cfc3b0f5ded838840a3b3e8a6f8867f7635fc819a8f1381ae9275df8398413. 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/US3DF1211516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b632e5c866a811d7528862bd628c7d164e95f6e4be76e9d001ef0f9632de239. 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/US3DF1211526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1107b84405dc9a75f8bc54fafee1b63afcb6d418f5edaf8e2acadfb3ca46d72. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/US3DF1211536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d8076d7d0b9cf612618c16a4214f42d33ca9bdca1ee4d211b5bccbbb23f1c69. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/US3DF1211541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53c4acc1464a03cf32f3a6227de04f8a5097bd4493de45456b8b88a62ad26614. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QM6MZ1811121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x155a048d879927046b8973b7ae8981a32103ee7ef95c36e6f6207e0bc4b82bc6. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/QM6MZ1811123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c4071567f89708f67450d96254a9717ce412c4d2af9f9e59e464119d1d99c54. 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/QM6MZ1811124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb08266d29160b0235541c9a25b7df7bee6ba9a6fd2f18c14b7a74349cfc29976. 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/QM6MZ1811129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99db59d4483076bae4b2d0780f7af87ea09a9baac56251c56d83be13b94705e0. 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/QM6MZ1811132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1e3e30d1e15b699aa84a42a8ac10d8fe40e7b33cdd265ee7f22d0508a385943. 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/QM6MZ1811139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf503b94f571f0a5c9e3f0c0e4d05dd079f4869b29c547e7ca22ab94cb3793011. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/QZHN92135307.
En Vivo Rancho La Cruz De Sacate (En vivo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6057ec1c37298ac5ca569e0a06500f01f250c54260c6b7ce59d0e2dc031c1caf. 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/QZK6F2171737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7511647571c268630641812bbf8c79fee9b97b65cd1440ae4a7d10089987e9cf. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/QM3DF2170981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfce319ff37b879d41d9908ead15cd6f0cf2b629321c145221c267fa46c5db6f9. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:27:49Z), 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/QM3DF2170982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2558ba530c6a5e1e0980e6130e39319cd43977766d124bf45160c7db90d05dca. Chain 2 (Bitcoin): anchored in block 958329 (2026-07-16T21:48:38Z), 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/QZNWU2130357.
En Vivo Desde Bacayopa, Choix Sinaloa (En vivo)
En Vivo Desde Bacayopa, Choix. Sinaloa (En vivo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x102b46dff3f0ce9d4694fa7499c361f7c1f9bd013e38ca6e4b0639af4a1dd22d. 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/QZNWX2164942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x940226ff58df8e4e99c034561aeba1cff674807c110cbe1c462fc87f2cbadc41. Chain 2 (Bitcoin): anchored in block 958582 (2026-07-18T16:47:25Z), 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/QZNWX2164943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe28c2607c25d65bcc0cac9269704abcbab53f48fdcd99d8f26c4410c4c2ebd76. 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/QZNWX2164945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2517176f27c71725faadcac5ab5b2957a502a855f17558aef16eea9df5d9dec6. Chain 2 (Bitcoin): anchored in block 958465 (2026-07-18T00:04:42Z), 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/QZNWX2164949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x175752b507481bf3b20c754e8f225722c2e23d94579abcaadbf109a86d4f1fc6. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T15:31:18Z), 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/QZNWX2164956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86e04a8abbb4156e7e1ea9348506872133c6855eb0e2041bc0e750717ebc50f8. 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/QZNWX2164958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86164279b443f4715cf833e3133bc15351061d4971fc8bf3ece8ec35bc16af91. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/QZNWX2164960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f57f10f953737eb6bed4a78ac36d2704642d037ae422f7b15df601487314742. Chain 2 (Bitcoin): anchored in block 958627 (2026-07-18T23:33:54Z), 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/QZHN92214061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fabad0103f821d2450b9a756765f5c1bafd2c7b370c9f3f23423b2ee2894fa0. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:39:08Z), 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/QZHN92214068.
En Vivo, Vol. 3 (Version Sierreña) [En vivo]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe564a56ce8c7edaff6ebfcd4e3b1c6e6e03312b88b9d381fa88f5c67623ec11f. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/QZK6P2294708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc19fea453f2919f9d5f427d23d36bbdb06c1bbf62ec25e2d530eba820dadec2e. Chain 2 (Bitcoin): anchored in block 958825 (2026-07-20T07:35:24Z), 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/QZK6N2277791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63b7a2221670aac1f0ae71aa695cb253984730d0970aa8c1270ff26f5c4a5206. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/QZDQH2351601.