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 0xf33f1f9c91ae2cd8ecdbaa48105745e76a1419b957a579761d9f013f82d16060. 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/51c54359-95fd-4acb-b04d-0c9901a481d2.json and https://artists.proofprofile.net/proofs/artist/51c54359-95fd-4acb-b04d-0c9901a481d2.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 0xf5ad1c3dbae8433ecb09cd55738889bc7a3334a6e25e22ed6e54f052850f867e. 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/USHM21456247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b270e5c8c73836c4a634c9af8e5e7a0b5a5d01e1a12f83d36006cbf151559e6. Chain 2 (Bitcoin): anchored in block 957844 (2026-07-13T10:17:20Z), 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/USHM21456248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dd41957857a59222dd4e73cbe7e6ac26617964151e6ae25304d39383317f0d9. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/USCGJ1441515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd90b1c7ba2893a5af259c5a499d14eefb761aceb173e4ef56af851e3a5e836a1. 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/USHM81481113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb0b92086e725ea7e6647038800198ac254230a58c163ab16090317b60d5fe70. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T19:37:17Z), 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/QZ8CY1700008.
Corridos Narrando la Verdadera Historia, Pt. 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb29f53e45a976dca5fb6903360349ca36ac888e4316c0f9cbc22c8a22dadbe1. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QZ8CY1806005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeda400dd5ca85b47bb0d3cc40543df86d8fb1cb2b35cc0e5166b94c3aac658f8. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/US3DF1986673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28fd33a0c88f31426cfa2b36dd59dcbd2b5c4ec717492a9f6ba246ec22598188. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/US3DF1986674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x783b57482dd0a7177a59e04c43536f54a4465fd2d3eb9618a1abf80ecc16cb73. 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/US3DF1986675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70ddf6c6f7d5b32c8ead03317ec43308450f148d339453460f240b9e85b34ccc. 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/US3DF1986676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9271d249eb2f27da91a2896aacbe04d95dfc0949cee66d7733ce4d167cbed02. 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/US3DF1986679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8ff89d1fe31c8f5f09232cb066e20110b8496d5bf5c1e67928b7ee841dbfa52. 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/US3DF1986680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6583b0b2f34fdcdac2fb0023df40e4e42585fde84e9d9d47729a0928e027b96a. Chain 2 (Bitcoin): anchored in block 957067 (2026-07-07T16:54:37Z), 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/US3DF1986681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31cc69065ea73fb131fa6ae99d744f97ee1bec34a9ebea09d39c63126bce44fd. 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/US3DF1986682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb22a9e423b3893c262544d03e5011fdfe3deb403f9d0e1a3d89d319d99427987. 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/US3DF1986684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x641af4b6e3e5b4accff3fe0fcc6224ace0917d915c8adef3d7e31ee2cfd7b7dd. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/US3DF1986677.
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 0x70906a2034dc1309996e51f332e1c74641b94d8e1b5b3cf2d59fe8968e51c3fd. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/US3DF1986678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2a62fef43968f4473f7035a3bd3c51864a3312e50f4debc9851418fc2650f41. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/US3DF1986683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c72d636f52c7a2b37c818cfe7c7689a3626bc09508f51b0ab09de39fdf02155. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QZGLS2200069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbb70a59ebd2c8cb2f62b1112c56015dea27297181a513cdec6dce70017c857c. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/QZDQH2362653.
Popurri Huapangoso: El Burrero Culon / El Coco Rayado / La Picare (En Vivo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dfc8db96fadcbcaad0c7218cfeacc729123423c2c5ef0f908f63f3e6074915d. 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/USCGJ2539209.