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 0xde1c702701a510143a7b59dfe3ea23cc406eae222bf6f46e3d6022f39dad6800. Chain 2 (Bitcoin): anchored in block 953667 (2026-06-14T17:49:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5715bd41-28ae-48f5-bf41-77339fcc728c.json and https://artists.proofprofile.net/proofs/artist/5715bd41-28ae-48f5-bf41-77339fcc728c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
El Peor De Mis Fracasos -Serie 20 Exitos Vol 2
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 0x389fb94cc221324120ae10492a7b67c744c4df6549e577f49ed8c7178de5de8a. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T01:08:10Z), 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/QMYQ51300506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79156487d8b78e782117e9c2df21c26f85ba78eb89aef4175df90cecaa647ce4. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:29:31Z), 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/QMYQ51300508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b4465ca5f69cc346c9d935a3e7f8644737914e8adb642bb34e350aad06cf44e. 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/MXF019300261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa97ef4821fb8404a6ed2a3ef9605309ba3819573950f2062776f342e1805a5e7. 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/MXF019300264.
Agarron Tropical - Dos Grandes Estrellas, Vol. 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84b03ced0a0a2223a3b45c2a40a62315fd079267c7817d449ec268821c168e66. 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/USJ3V1866983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74c7f2d515e583cc447f4b0d2d6956305e7758bd250d8475bd5ab61b9efbfe7b. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:37:38Z), 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/USJ3V1866985.
Agarron Tropical Dos Grandes Estrellas, Vol. 1