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 0xbc861afbb717ad4f8514200e02743d19f08b304280a50a7c500c84e75a15d057. 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/6348d176-65c9-41d7-921c-7275fe6b9493.json and https://artists.proofprofile.net/proofs/artist/6348d176-65c9-41d7-921c-7275fe6b9493.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 0x399e479f096426111d8ea0cffbb2dbd28756234e26219e10c65c9c5ea7a23abc. Chain 2 (Bitcoin): anchored in block 956620 (2026-07-04T07:11:13Z), 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/COSO11000019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4e43c194776a0b3d15c6278094a3066fb5b31a14332242a29c6eb256c7dc364. 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/COSO11000069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09e53e2c8fa7a6df66e5f324bf6e03d532ab00080e1bb35d64d8d10e5393d423. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/COC011329606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x185e0f81a6092979988cbbed04b73a3626ac3d28dab37b8bd07cd0bb833d00f9. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T01:49:59Z), 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/COC011329610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72d0d9b99af0a784fb6ba9f35631386061132bcb87765d39bbd2a0c60f7b809b. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/COC011329612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c808f6750752b6560b2cd9880b7be9d6abbf728194934396c167f31ade458f6. 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/COC011329617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4202b1447d59f5be30c91039552421219b4bddd2ae9721766b302d13f205e1c1. 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/COC011329622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6cd29266e7598625daea478853a55ccc6f89f68105fc514b2d573297cf3ddb3. 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/COC011933204.
Valle Hits - Live Sessions Homenaje a Binomio de Oro / Rafael Orozco
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9079ee09f03cbb834b60e90b1d7cf0e0bb17ac305f8963010be54cb382ce1fbc. 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/GXF9Q2420288.
El Higuerón - Live Sessions Homenaje a Binomio de Oro / Rafael Orozco
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x952c3160d148e48ad4317c0bb3b1da11de5c837b49234414083c9e2d829cf652. 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/COC011530566.