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 0xc4ff35aedf12518700a36b0c31c91d844e2f2108e9d7a644e43081701e73879e. Chain 2 (Bitcoin): anchored in block 953627 (2026-06-14T11:43:04Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2f95d231-3785-46bd-927e-a3a88b4e0521.json and https://artists.proofprofile.net/proofs/artist/2f95d231-3785-46bd-927e-a3a88b4e0521.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 0x6716b5ff1363fd7147a11f737498ebdfd03c6c5c4606a65177e4286c4731fbd3. 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/USCGJ2274154.
Amanda Ciérrale (En Vivo Desde la Cabaña)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc08f0a25fd0da926fe7e6ae96671bfabc4ccac21a4bc60eec5764d8e1fbc90d9. 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/USHM82240833.
El Moro de Tepehuanes (En Vivo Desde la Cabaña)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3992e3ac1b28fc525a6a23151d80613bd40e31dae182fecb1f3aebf8dea85ba2. 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/USHM82275055.
Sangoloteadito (En Vivo Desde la Cabaña)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab7cb36da8c3babd9c0ed8fed6b3d1e10acae1e74461aa3bee3834de29740d06. Chain 2 (Bitcoin): anchored in block 958407 (2026-07-17T12:08:48Z), 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/USHM92220821.
Popurri la Chona y el Tucanazo en Vivo Desde la Cabaña (En Vivo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9df21a318f5c6571227557ed7258543b73f1946d8a02659d9b58d95a4b25023. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/USDY42329843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7909464131d0b247d9bb51f0d884094aba344d172e54e844ada21eaffb35e01. Chain 2 (Bitcoin): anchored in block 958432 (2026-07-17T15:43:17Z), 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/USX9P2399000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8023a02f583361b81301a3f0cc6d4ab52fcc83f7ee973cb26cc5c9968d128d4b. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/USHM22471950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x479cd85d81fe3360eb54ecffff606efca443f60f51093924ac19340fa8f431bc. 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/USHM82499925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20f4b4a8696100d8ef086df22f00748d460324a5218cb32ab63d99cb48ab34fa. 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/USCGH2537702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a5890b4934303b1af30726658a08a3adce25d4c148fcff0be1ec54808b26d13. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/USCGJ2521813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc2e0a10ba96f298d6a6e0a4a60a5ace2fccd89b94c97528b284f4da269b770e. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/USCGJ2521814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef678ecb73f7cd9ae767e74be191eb9bea6c21eca6144548e6808612b1c4a06d. 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/USCGJ2521815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5ed19beca7784a2097c9872f256e0327e12caf40a15552c0de21c09a383aa47. 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/USCGJ2521817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1007648bba398b8b9604463cf2e848b0fe22b734605286de8875ece2a9eb74c3. 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/USCGJ2521818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d0e0bfb05afe16fcb621ba02c94640d311084ec583a20e72fc8c1e6ee1b7e8b. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:57:41Z), 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/USCGJ2521819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5892348ebe8e35ccc630f25962f3bdf5a0b2acb2f6ed00504bb18d73a1491bb. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/USCGJ2521820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd6439ed34a350329ab5fffe8a91b7b146fea1dda507c686032d577413cbcc13. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/USHM82575444.