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 0xa6116a327c28710fb881821090fb20d77a7663c209740005fc8cd71f4be07fb6. Chain 2 (Bitcoin): anchored in block 953625 (2026-06-14T11:37:06Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/26634001-8913-4def-8344-83402a223b84.json and https://artists.proofprofile.net/proofs/artist/26634001-8913-4def-8344-83402a223b84.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 0x36e22e797a7398597f309dd6caa7ccde0bdfceb1deca7a6b80875743c24a5e14. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/GX3Q92030414.
El Hilo (feat. Elkin Robinson & Kombilesa Mí) - KOGIMAN Remix
KOGI SESSIONS, Vol. 1 (Cumbiana Remixes)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedca711afcd50686d70e315832e888cc4cc52db2f83c95d81b82e5ad19ea461e. 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/USSD12100122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebfb0f4b46c542c6943bccb4843b035d9aac6ebad157030deeb681f56ad166d8. 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/USSD12100126.
Hechicera (feat. Chancha Vía Circuito) - Chancha Vía Circuito Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1c55a6c7ab2f3be38e260a4ad04c1b90b4cfd60701c6f90ecb8218de278c03a. Chain 2 (Bitcoin): anchored in block 960111 (2026-07-29T13:21:01Z), 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/USSD12100132.
For Sale (feat. Alejandro Sanz) - Paul van Dyk Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce01feea0ed403b75a338da390184ada2f90230b5b63bb45e5b03773e6becf80. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/USSD12100127.
Los Consejos del Difunto - El Búho Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ccc6bcd507fd35882164a557beff26a9e43a81dd6dc60598424d58789107d43. 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/USSD12100133.
El Hilo (feat. Elkin Robinson, Wisin & Los Legendarios) - La Base Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14334b818d817c9a325c54c648e432c1e38f0df9865cb339ac478cad55201fe9. Chain 2 (Bitcoin): anchored in block 959134 (2026-07-22T13:34:27Z), 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/USSD12100123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11451e21c2518674a40d34d0576d449eed363a9d60ae55b1a0b2ceb4527e57e5. 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/USSD12000470.
Zhigonezhi (feat. Teto Ocampo) - Noahmusyc Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3703c9dbd1c21a7bbfd81de92fbda4af0544927b419c6c6a771107661c40a93d. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/USSD12100128.
Los Consejos del Difunto - Papá Kumbé Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8251202971d0772db92c19ab67aa95e2fb6651804fae1a85253ce86689ab06c5. 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/USSD12100129.
El Hilo (feat. Elkin Robinson & Noahmusyc) - Noahmusyc Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9f84db9c2876c541f338aa1cae9f6e801dcbd96730cd90c7f007aed2e95c4c6. Chain 2 (Bitcoin): anchored in block 960111 (2026-07-29T13:21:01Z), 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/USSD12100131.
For Sale (feat. Alejandro Sanz) - Noahmusyc Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57e81a0c36ab2bf817378f49d5e2406877646dd7ce9f54982d0008625ca7fede. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/USSD12100134.
Hechicera (feat. Papá Kumbé) - Papá Kumbé Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x964b94f21abd85914b6d9dffea0220025badeef15a7841ac4dc84dc70b1d2c58. 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/USSD12100124.
Zhigonezhi (feat. Teto Ocampo) - Chancha Vía Circuito Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd87844af2eee1027821822f536d7e668b857aa6181b32bf7689d2e287cf0e7b. 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/USSD12100125.
Rapsodia en La Mayor (para Elena) - Ok Reverie Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8e9b5329c1f72eaa08065d2d1496fe52607737498239aec319e32ee57469042. Chain 2 (Bitcoin): anchored in block 960101 (2026-07-29T11:46:30Z), 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/USSD12100130.