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 0xcca92a7dea034f88470879d3a633d970e3b01ec6e0927c2438f8128de410353b. 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/2575b366-cd4e-4c9f-8754-d6762ed73cb2.json and https://artists.proofprofile.net/proofs/artist/2575b366-cd4e-4c9f-8754-d6762ed73cb2.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Ma Taará Li Dios Ma Taará Laj Tzá - Re-Grabación
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 0xb641dad988106e0e465fa09182707c0b2a30443a0931c2d8d6518766c402b85f. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-16T00:17:39Z), 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/ESA011565380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf179f26dea3a222a541b7152ca324a39089626a4ed57eefe8b64ebb8c35e5d7. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/ESA011565385.
Li Choxá U't Ri Ruchichoch' - Re-Grabación
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ca13c71051bda37170729a6925ce5e1d9fc8220b105468b0a37fc96205fb25e. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/ESA011565386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe8b3710e85b6b1af3d3ccc47771adba28fc37af16aaa0d422570b2d7ec430f6. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/ESA011565389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa0e5e87880c036768ae1ae5f6a46bedc7ecfa9ce402c9ce6a3afe0a9c4426d5. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T04:41:56Z), 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/QZNJX2418636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed0aeb65276a51175de887490e669f0f47b4d2bb4d160bd2e3a59f3d7a80a96b. 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/QZMZ92497848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38761a02671b770860a9f6b1b996194ead5190332c12ee2e7dfc6745617bbe8d. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/QZMZ92497514.