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 0xb2ec3171168ba190d1657b79d8ef14e50e86c14806ddb9dcfe8ad9939b725a04. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/62fc08be-1a98-422f-aca5-e31d96e99a31.json and https://artists.proofprofile.net/proofs/artist/62fc08be-1a98-422f-aca5-e31d96e99a31.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
De Vuelta al Cole (Torbellino 90's) Feat DJ Cano
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 0x38ff4afd96f980fcbf70a3175f8359e79b6ab3d6da6ca0b8f6bc1fd19c68b928. 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/DE1JN2440116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae3a17f269032d538cc213be79f049a2f04bebee20ec5737985465376c195e14. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/DE1JN2426930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce36bda26c75f911b06807efcf7cdc2ee34ccf21ece97b615d9c64048aec1875. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/DE1JN2426932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1be14b352512d6d19f33e060e19cd02e56c95778c6d633cb974cd2a257500b8e. Chain 2 (Bitcoin): anchored in block 957751 (2026-07-12T20:41:42Z), 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/DE1JN2426967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83bb1e82de409977b81ed9b4ab44989441fa8c93c490d739e906e7020c447601. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/DE1O62493093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f3e24a918af8cee1808b1033b83137575bd78e5e38761aeae2845aa44118e11. 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/DEAR42592779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbad5b1df1ff1ee82d44d62564ff4e32c378ea638db1c1f5a7f38778bd99a735. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:59:55Z), 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/DEAR42592586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cf788bf9092fddfd2e4d54b5a9b995accefe1a9b8936bfe183e31b464c5afdb. Chain 2 (Bitcoin): anchored in block 958714 (2026-07-19T09:51:44Z), 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/DEAR42591841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e5e4401922c0eca51e163f9c49430b0c9339b9c4ce32b753e6c5e7e0c51abdb. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/DEAR42508787.