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 0xa98951b66f3fafedded7c4e2011201eb807b5c244732974045faa9cd538a52bd. 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/d28fb3d6-1f9e-49b1-aa36-974069c65a19.json and https://artists.proofprofile.net/proofs/artist/d28fb3d6-1f9e-49b1-aa36-974069c65a19.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Paraíso Cumbiero Vol. 2 - Mix de Canciones Bailables
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 0x54eec9960430327d5f0bdd19693464753e9b9da45005891d4d84f80972cac11c. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/ARMWE1900636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x066ab5108eb8c9ba16af71344023fa0cfda8689ae0f356be4eda1943bea83b12. 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/GTA011200285.
Popurrí de Quebraditas: Camaron Pelao / La Brujita / El Farolito / Ingrata
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9649eaef5bc5d51bffae1eb44a6c395663039332437370540303f0f9845fdf5. 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/GTA010702715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc446ef2412e7696e0a535199fe0fba8be09094408f7c9d40d0e277d01873227. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/GTA010703733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35a195af39676d749688bcd4dff64c39cf48a40f3e31f40ce75d7261eca34412. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/GTA010700968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1aa3283ae9137fb9d75f424c04116ba1724376cd1408d594c522ecf0688644e. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/TCAFD2096809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa80c5e8b2b3946b2e33f26142666d4ae912e7b608f6db09a6183030b2fba4e02. 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/GTA010704686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe031b640546add7c7e0cd0d53e5bc1cee69225dc9bb80175a0e722446e713e96. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/GTA010705897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d60fb34fc62e896eccdee813764a17bfcac52e490b145a270c53b21e3d85a22. 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/GTA010806294.
La Cumbia del Garrote (El Garrote)|cumbia
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb856d525e64b506f63e41f468fc52bac35b7ef53af832a0f749d563869ebea87. Chain 2 (Bitcoin): anchored in block 958552 (2026-07-18T13:15:29Z), 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/GTA010700954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1983b97dcae587c9eb56c41f143b26ff9a89a93e3f7191354b862037f277f8c9. Chain 2 (Bitcoin): anchored in block 958678 (2026-07-19T05:59:57Z), 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/GTA010704193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cb3525415d3ae87cb91772d599417463b4347e96fbeebe6d7c679b2fcb7812d. 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/GTA010701105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe70d933b23b2354683b3b3722a3a817d27544f33972b2560bb2e09c21b5f088. 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/GTA010700988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40fb83dfd6ac87dd71903fced055c5b196f864a1cfc9ac02bb704520d6c3d559. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T16:14:34Z), 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/GTA010701069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b2dfade56cac1b66c97e3614721784ea050db1f92df48c61df33dfdbffc9967. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T17:53:56Z), 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/GTA010701129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x402f68edf5d2977b2936a942ebb33303044db2345d212a699a30a0b4c2558807. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/GTA010700865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2245ca78bb7a83589b3cac987526b8ce9a05e725b098319da85f8ac1301593a0. 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/GTA010700949.