thumb|Radaid on stage in 2009. Radaid is a musical group from Guadalajara, Mexico, which brings together pre-Hispanic sounds, world music, indie and contemporary electronic elements. The group, by Em
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 0xbde7d9c0d8556861c09dfe8c046536ddafb0167ebbe58910a86eba6e5a70b1bc. Chain 2 (Bitcoin): anchored in block 953633 (2026-06-14T12:47:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/32bbeddb-83b2-40f3-9905-ddd1601db5e8.json and https://artists.proofprofile.net/proofs/artist/32bbeddb-83b2-40f3-9905-ddd1601db5e8.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 0x64413875ce4331bddff5cc172fd386732dd272654cb776b9865a9efb9dbf0f40. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T16:34:03Z), 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/MXD741700003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x503c3d314484602bce5fda20611c8767613bf9be4667312505950a977e2db590. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/MXD741700011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca24e1ca6c6a3999d9191b56d4035aa3bc3de7e6d2444926f73bacbd008c8f9f. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:06:04Z), 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/MXD741700012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51809d91fbcff7dc189a80e0a3e9a154753746143318acaf0e5c73819477fbe3. 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/MXD741700017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd7fac41616be76639fa0dcd92a36dafa481c3ddff7d8853860fdacd9ea564a9. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T13:01:28Z), 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/MXD741700020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf01dbd8ed4168b34808d4ea1a0d72892e28b0a86fcb1dba83a69797ceb3832c. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/MX3451200228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb704ee50260bbd1265cccec6a2960c99e8537a0bda002c562cb11275c23d6828. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZ5AB1997461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7174f83358919658b6cc6506b6020f087dee9ec7bb3d2836e3469c04a4ac22dd. 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/QZ5AB1997467.